From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- devtools/client/shared/vendor/react-dom.js | 16370 +++++++++++++++++++++++++++ 1 file changed, 16370 insertions(+) create mode 100644 devtools/client/shared/vendor/react-dom.js (limited to 'devtools/client/shared/vendor/react-dom.js') diff --git a/devtools/client/shared/vendor/react-dom.js b/devtools/client/shared/vendor/react-dom.js new file mode 100644 index 0000000000..ca46bb9d75 --- /dev/null +++ b/devtools/client/shared/vendor/react-dom.js @@ -0,0 +1,16370 @@ +/** @license React v16.6.1 + * react-dom.production.min.js + * + * Copyright (c) Facebook, Inc. and its affiliates. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('devtools/client/shared/vendor/react')) : + typeof define === 'function' && define.amd ? define(['devtools/client/shared/vendor/react'], factory) : + (global.ReactDOM = factory(global.React)); +}(this, (function (React) { 'use strict'; + +/** + * Use invariant() to assert state which your program assumes to be true. + * + * Provide sprintf-style format (only %s is supported) and arguments + * to provide information about what broke and what you were + * expecting. + * + * The invariant message will be stripped in production, but the invariant + * will remain to ensure logic does not differ in production. + */ + +function invariant(condition, format, a, b, c, d, e, f) { + if (!condition) { + var error = void 0; + if (format === undefined) { + error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.'); + } else { + var args = [a, b, c, d, e, f]; + var argIndex = 0; + error = new Error(format.replace(/%s/g, function () { + return args[argIndex++]; + })); + error.name = 'Invariant Violation'; + } + + error.framesToPop = 1; // we don't care about invariant's own frame + throw error; + } +} + +// Relying on the `invariant()` implementation lets us +// preserve the format and params in the www builds. +/** + * WARNING: DO NOT manually require this module. + * This is a replacement for `invariant(...)` used by the error code system + * and will _only_ be required by the corresponding babel pass. + * It always throws. + */ +function reactProdInvariant(code) { + var argCount = arguments.length - 1; + var url = 'https://reactjs.org/docs/error-decoder.html?invariant=' + code; + for (var argIdx = 0; argIdx < argCount; argIdx++) { + url += '&args[]=' + encodeURIComponent(arguments[argIdx + 1]); + } + // Rename it so that our build transform doesn't attempt + // to replace this invariant() call with reactProdInvariant(). + var i = invariant; + i(false, + // The error code is intentionally part of the message (and + // not the format argument) so that we could deduplicate + // different errors in logs based on the code. + 'Minified React error #' + code + '; visit %s ' + 'for the full message or use the non-minified dev environment ' + 'for full errors and additional helpful warnings. ', url); +} + +!React ? reactProdInvariant('227') : void 0; + +var invokeGuardedCallbackImpl = function (name, func, context, a, b, c, d, e, f) { + var funcArgs = Array.prototype.slice.call(arguments, 3); + try { + func.apply(context, funcArgs); + } catch (error) { + this.onError(error); + } +}; + +// Used by Fiber to simulate a try-catch. +var hasError = false; +var caughtError = null; + +// Used by event system to capture/rethrow the first error. +var hasRethrowError = false; +var rethrowError = null; + +var reporter = { + onError: function (error) { + hasError = true; + caughtError = error; + } +}; + +/** + * Call a function while guarding against errors that happens within it. + * Returns an error if it throws, otherwise null. + * + * In production, this is implemented using a try-catch. The reason we don't + * use a try-catch directly is so that we can swap out a different + * implementation in DEV mode. + * + * @param {String} name of the guard to use for logging or debugging + * @param {Function} func The function to invoke + * @param {*} context The context to use when calling the function + * @param {...*} args Arguments for function + */ +function invokeGuardedCallback(name, func, context, a, b, c, d, e, f) { + hasError = false; + caughtError = null; + invokeGuardedCallbackImpl.apply(reporter, arguments); +} + +/** + * Same as invokeGuardedCallback, but instead of returning an error, it stores + * it in a global so it can be rethrown by `rethrowCaughtError` later. + * TODO: See if caughtError and rethrowError can be unified. + * + * @param {String} name of the guard to use for logging or debugging + * @param {Function} func The function to invoke + * @param {*} context The context to use when calling the function + * @param {...*} args Arguments for function + */ +function invokeGuardedCallbackAndCatchFirstError(name, func, context, a, b, c, d, e, f) { + invokeGuardedCallback.apply(this, arguments); + if (hasError) { + var error = clearCaughtError(); + if (!hasRethrowError) { + hasRethrowError = true; + rethrowError = error; + } + } +} + +/** + * During execution of guarded functions we will capture the first error which + * we will rethrow to be handled by the top level error handler. + */ +function rethrowCaughtError() { + if (hasRethrowError) { + var error = rethrowError; + hasRethrowError = false; + rethrowError = null; + throw error; + } +} + + + +function clearCaughtError() { + if (hasError) { + var error = caughtError; + hasError = false; + caughtError = null; + return error; + } else { + reactProdInvariant('198'); + } +} + +/** + * Injectable ordering of event plugins. + */ +var eventPluginOrder = null; + +/** + * Injectable mapping from names to event plugin modules. + */ +var namesToPlugins = {}; + +/** + * Recomputes the plugin list using the injected plugins and plugin ordering. + * + * @private + */ +function recomputePluginOrdering() { + if (!eventPluginOrder) { + // Wait until an `eventPluginOrder` is injected. + return; + } + for (var pluginName in namesToPlugins) { + var pluginModule = namesToPlugins[pluginName]; + var pluginIndex = eventPluginOrder.indexOf(pluginName); + !(pluginIndex > -1) ? reactProdInvariant('96', pluginName) : void 0; + if (plugins[pluginIndex]) { + continue; + } + !pluginModule.extractEvents ? reactProdInvariant('97', pluginName) : void 0; + plugins[pluginIndex] = pluginModule; + var publishedEvents = pluginModule.eventTypes; + for (var eventName in publishedEvents) { + !publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName) ? reactProdInvariant('98', eventName, pluginName) : void 0; + } + } +} + +/** + * Publishes an event so that it can be dispatched by the supplied plugin. + * + * @param {object} dispatchConfig Dispatch configuration for the event. + * @param {object} PluginModule Plugin publishing the event. + * @return {boolean} True if the event was successfully published. + * @private + */ +function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { + !!eventNameDispatchConfigs.hasOwnProperty(eventName) ? reactProdInvariant('99', eventName) : void 0; + eventNameDispatchConfigs[eventName] = dispatchConfig; + + var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; + if (phasedRegistrationNames) { + for (var phaseName in phasedRegistrationNames) { + if (phasedRegistrationNames.hasOwnProperty(phaseName)) { + var phasedRegistrationName = phasedRegistrationNames[phaseName]; + publishRegistrationName(phasedRegistrationName, pluginModule, eventName); + } + } + return true; + } else if (dispatchConfig.registrationName) { + publishRegistrationName(dispatchConfig.registrationName, pluginModule, eventName); + return true; + } + return false; +} + +/** + * Publishes a registration name that is used to identify dispatched events. + * + * @param {string} registrationName Registration name to add. + * @param {object} PluginModule Plugin publishing the event. + * @private + */ +function publishRegistrationName(registrationName, pluginModule, eventName) { + !!registrationNameModules[registrationName] ? reactProdInvariant('100', registrationName) : void 0; + registrationNameModules[registrationName] = pluginModule; + registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies; + + +} + +/** + * Registers plugins so that they can extract and dispatch events. + * + * @see {EventPluginHub} + */ + +/** + * Ordered list of injected plugins. + */ +var plugins = []; + +/** + * Mapping from event name to dispatch config + */ +var eventNameDispatchConfigs = {}; + +/** + * Mapping from registration name to plugin module + */ +var registrationNameModules = {}; + +/** + * Mapping from registration name to event name + */ +var registrationNameDependencies = {}; + +/** + * Mapping from lowercase registration names to the properly cased version, + * used to warn in the case of missing event handlers. Available + * only in false. + * @type {Object} + */ + +// Trust the developer to only use possibleRegistrationNames in false + +/** + * Injects an ordering of plugins (by plugin name). This allows the ordering + * to be decoupled from injection of the actual plugins so that ordering is + * always deterministic regardless of packaging, on-the-fly injection, etc. + * + * @param {array} InjectedEventPluginOrder + * @internal + * @see {EventPluginHub.injection.injectEventPluginOrder} + */ +function injectEventPluginOrder(injectedEventPluginOrder) { + !!eventPluginOrder ? reactProdInvariant('101') : void 0; + // Clone the ordering so it cannot be dynamically mutated. + eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); + recomputePluginOrdering(); +} + +/** + * Injects plugins to be used by `EventPluginHub`. The plugin names must be + * in the ordering injected by `injectEventPluginOrder`. + * + * Plugins can be injected as part of page initialization or on-the-fly. + * + * @param {object} injectedNamesToPlugins Map from names to plugin modules. + * @internal + * @see {EventPluginHub.injection.injectEventPluginsByName} + */ +function injectEventPluginsByName(injectedNamesToPlugins) { + var isOrderingDirty = false; + for (var pluginName in injectedNamesToPlugins) { + if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { + continue; + } + var pluginModule = injectedNamesToPlugins[pluginName]; + if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) { + !!namesToPlugins[pluginName] ? reactProdInvariant('102', pluginName) : void 0; + namesToPlugins[pluginName] = pluginModule; + isOrderingDirty = true; + } + } + if (isOrderingDirty) { + recomputePluginOrdering(); + } +} + +/** + * Similar to invariant but only logs a warning if the condition is not met. + * This can be used to log issues in development environments in critical + * paths. Removing the logging code for production environments will keep the + * same logic and follow the same code paths. + */ + +var getFiberCurrentPropsFromNode = null; +var getInstanceFromNode = null; +var getNodeFromInstance = null; + +function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) { + getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl; + getInstanceFromNode = getInstanceFromNodeImpl; + getNodeFromInstance = getNodeFromInstanceImpl; + +} + +/** + * Dispatch the event to the listener. + * @param {SyntheticEvent} event SyntheticEvent to handle + * @param {function} listener Application-level callback + * @param {*} inst Internal component instance + */ +function executeDispatch(event, listener, inst) { + var type = event.type || 'unknown-event'; + event.currentTarget = getNodeFromInstance(inst); + invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event); + event.currentTarget = null; +} + +/** + * Standard/simple iteration through an event's collected dispatches. + */ +function executeDispatchesInOrder(event) { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; + if (Array.isArray(dispatchListeners)) { + for (var i = 0; i < dispatchListeners.length; i++) { + if (event.isPropagationStopped()) { + break; + } + // Listeners and Instances are two parallel arrays that are always in sync. + executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); + } + } else if (dispatchListeners) { + executeDispatch(event, dispatchListeners, dispatchInstances); + } + event._dispatchListeners = null; + event._dispatchInstances = null; +} + +/** + * @see executeDispatchesInOrderStopAtTrueImpl + */ + + +/** + * Execution of a "direct" dispatch - there must be at most one dispatch + * accumulated on the event or it is considered an error. It doesn't really make + * sense for an event with multiple dispatches (bubbled) to keep track of the + * return values at each dispatch execution, but it does tend to make sense when + * dealing with "direct" dispatches. + * + * @return {*} The return value of executing the single dispatch. + */ + + +/** + * @param {SyntheticEvent} event + * @return {boolean} True iff number of dispatches accumulated is greater than 0. + */ + +/** + * Accumulates items that must not be null or undefined into the first one. This + * is used to conserve memory by avoiding array allocations, and thus sacrifices + * API cleanness. Since `current` can be null before being passed in and not + * null after this function, make sure to assign it back to `current`: + * + * `a = accumulateInto(a, b);` + * + * This API should be sparingly used. Try `accumulate` for something cleaner. + * + * @return {*|array<*>} An accumulation of items. + */ + +function accumulateInto(current, next) { + !(next != null) ? reactProdInvariant('30') : void 0; + + if (current == null) { + return next; + } + + // Both are not empty. Warning: Never call x.concat(y) when you are not + // certain that x is an Array (x could be a string with concat method). + if (Array.isArray(current)) { + if (Array.isArray(next)) { + current.push.apply(current, next); + return current; + } + current.push(next); + return current; + } + + if (Array.isArray(next)) { + // A bit too dangerous to mutate `next`. + return [current].concat(next); + } + + return [current, next]; +} + +/** + * @param {array} arr an "accumulation" of items which is either an Array or + * a single item. Useful when paired with the `accumulate` module. This is a + * simple utility that allows us to reason about a collection of items, but + * handling the case when there is exactly one item (and we do not need to + * allocate an array). + * @param {function} cb Callback invoked with each element or a collection. + * @param {?} [scope] Scope used as `this` in a callback. + */ +function forEachAccumulated(arr, cb, scope) { + if (Array.isArray(arr)) { + arr.forEach(cb, scope); + } else if (arr) { + cb.call(scope, arr); + } +} + +/** + * Internal queue of events that have accumulated their dispatches and are + * waiting to have their dispatches executed. + */ +var eventQueue = null; + +/** + * Dispatches an event and releases it back into the pool, unless persistent. + * + * @param {?object} event Synthetic event to be dispatched. + * @private + */ +var executeDispatchesAndRelease = function (event) { + if (event) { + executeDispatchesInOrder(event); + + if (!event.isPersistent()) { + event.constructor.release(event); + } + } +}; +var executeDispatchesAndReleaseTopLevel = function (e) { + return executeDispatchesAndRelease(e); +}; + +function isInteractive(tag) { + return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea'; +} + +function shouldPreventMouseEvent(name, type, props) { + switch (name) { + case 'onClick': + case 'onClickCapture': + case 'onDoubleClick': + case 'onDoubleClickCapture': + case 'onMouseDown': + case 'onMouseDownCapture': + case 'onMouseMove': + case 'onMouseMoveCapture': + case 'onMouseUp': + case 'onMouseUpCapture': + return !!(props.disabled && isInteractive(type)); + default: + return false; + } +} + +/** + * This is a unified interface for event plugins to be installed and configured. + * + * Event plugins can implement the following properties: + * + * `extractEvents` {function(string, DOMEventTarget, string, object): *} + * Required. When a top-level event is fired, this method is expected to + * extract synthetic events that will in turn be queued and dispatched. + * + * `eventTypes` {object} + * Optional, plugins that fire events must publish a mapping of registration + * names that are used to register listeners. Values of this mapping must + * be objects that contain `registrationName` or `phasedRegistrationNames`. + * + * `executeDispatch` {function(object, function, string)} + * Optional, allows plugins to override how an event gets dispatched. By + * default, the listener is simply invoked. + * + * Each plugin that is injected into `EventsPluginHub` is immediately operable. + * + * @public + */ + +/** + * Methods for injecting dependencies. + */ +var injection = { + /** + * @param {array} InjectedEventPluginOrder + * @public + */ + injectEventPluginOrder: injectEventPluginOrder, + + /** + * @param {object} injectedNamesToPlugins Map from names to plugin modules. + */ + injectEventPluginsByName: injectEventPluginsByName +}; + +/** + * @param {object} inst The instance, which is the source of events. + * @param {string} registrationName Name of listener (e.g. `onClick`). + * @return {?function} The stored callback. + */ +function getListener(inst, registrationName) { + var listener = void 0; + + // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not + // live here; needs to be moved to a better place soon + var stateNode = inst.stateNode; + if (!stateNode) { + // Work in progress (ex: onload events in incremental mode). + return null; + } + var props = getFiberCurrentPropsFromNode(stateNode); + if (!props) { + // Work in progress. + return null; + } + listener = props[registrationName]; + if (shouldPreventMouseEvent(registrationName, inst.type, props)) { + return null; + } + !(!listener || typeof listener === 'function') ? reactProdInvariant('231', registrationName, typeof listener) : void 0; + return listener; +} + +/** + * Allows registered plugins an opportunity to extract events from top-level + * native browser events. + * + * @return {*} An accumulation of synthetic events. + * @internal + */ +function extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = null; + for (var i = 0; i < plugins.length; i++) { + // Not every plugin in the ordering may be loaded at runtime. + var possiblePlugin = plugins[i]; + if (possiblePlugin) { + var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + if (extractedEvents) { + events = accumulateInto(events, extractedEvents); + } + } + } + return events; +} + +function runEventsInBatch(events) { + if (events !== null) { + eventQueue = accumulateInto(eventQueue, events); + } + + // Set `eventQueue` to null before processing it so that we can tell if more + // events get enqueued while processing. + var processingEventQueue = eventQueue; + eventQueue = null; + + if (!processingEventQueue) { + return; + } + + forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel); + !!eventQueue ? reactProdInvariant('95') : void 0; + // This would be a good time to rethrow if any of the event handlers threw. + rethrowCaughtError(); +} + +function runExtractedEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + runEventsInBatch(events); +} + +var FunctionComponent = 0; +var ClassComponent = 1; +var IndeterminateComponent = 2; // Before we know whether it is function or class +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedSuspenseComponent = 18; + +var randomKey = Math.random().toString(36).slice(2); +var internalInstanceKey = '__reactInternalInstance$' + randomKey; +var internalEventHandlersKey = '__reactEventHandlers$' + randomKey; + +function precacheFiberNode(hostInst, node) { + node[internalInstanceKey] = hostInst; +} + +/** + * Given a DOM node, return the closest ReactDOMComponent or + * ReactDOMTextComponent instance ancestor. + */ +function getClosestInstanceFromNode(node) { + if (node[internalInstanceKey]) { + return node[internalInstanceKey]; + } + + while (!node[internalInstanceKey]) { + if (node.parentNode) { + node = node.parentNode; + } else { + // Top of the tree. This node must not be part of a React tree (or is + // unmounted, potentially). + return null; + } + } + + var inst = node[internalInstanceKey]; + if (inst.tag === HostComponent || inst.tag === HostText) { + // In Fiber, this will always be the deepest root. + return inst; + } + + return null; +} + +/** + * Given a DOM node, return the ReactDOMComponent or ReactDOMTextComponent + * instance, or null if the node was not rendered by this React. + */ +function getInstanceFromNode$1(node) { + var inst = node[internalInstanceKey]; + if (inst) { + if (inst.tag === HostComponent || inst.tag === HostText) { + return inst; + } else { + return null; + } + } + return null; +} + +/** + * Given a ReactDOMComponent or ReactDOMTextComponent, return the corresponding + * DOM node. + */ +function getNodeFromInstance$1(inst) { + if (inst.tag === HostComponent || inst.tag === HostText) { + // In Fiber this, is just the state node right now. We assume it will be + // a host component or host text. + return inst.stateNode; + } + + // Without this first invariant, passing a non-DOM-component triggers the next + // invariant for a missing parent, which is super confusing. + reactProdInvariant('33'); +} + +function getFiberCurrentPropsFromNode$1(node) { + return node[internalEventHandlersKey] || null; +} + +function updateFiberProps(node, props) { + node[internalEventHandlersKey] = props; +} + +function getParent(inst) { + do { + inst = inst.return; + // TODO: If this is a HostRoot we might want to bail out. + // That is depending on if we want nested subtrees (layers) to bubble + // events to their parent. We could also go through parentNode on the + // host node but that wouldn't work for React Native and doesn't let us + // do the portal feature. + } while (inst && inst.tag !== HostComponent); + if (inst) { + return inst; + } + return null; +} + +/** + * Return the lowest common ancestor of A and B, or null if they are in + * different trees. + */ +function getLowestCommonAncestor(instA, instB) { + var depthA = 0; + for (var tempA = instA; tempA; tempA = getParent(tempA)) { + depthA++; + } + var depthB = 0; + for (var tempB = instB; tempB; tempB = getParent(tempB)) { + depthB++; + } + + // If A is deeper, crawl up. + while (depthA - depthB > 0) { + instA = getParent(instA); + depthA--; + } + + // If B is deeper, crawl up. + while (depthB - depthA > 0) { + instB = getParent(instB); + depthB--; + } + + // Walk in lockstep until we find a match. + var depth = depthA; + while (depth--) { + if (instA === instB || instA === instB.alternate) { + return instA; + } + instA = getParent(instA); + instB = getParent(instB); + } + return null; +} + +/** + * Return if A is an ancestor of B. + */ + + +/** + * Return the parent instance of the passed-in instance. + */ + + +/** + * Simulates the traversal of a two-phase, capture/bubble event dispatch. + */ +function traverseTwoPhase(inst, fn, arg) { + var path = []; + while (inst) { + path.push(inst); + inst = getParent(inst); + } + var i = void 0; + for (i = path.length; i-- > 0;) { + fn(path[i], 'captured', arg); + } + for (i = 0; i < path.length; i++) { + fn(path[i], 'bubbled', arg); + } +} + +/** + * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that + * should would receive a `mouseEnter` or `mouseLeave` event. + * + * Does not invoke the callback on the nearest common ancestor because nothing + * "entered" or "left" that element. + */ +function traverseEnterLeave(from, to, fn, argFrom, argTo) { + var common = from && to ? getLowestCommonAncestor(from, to) : null; + var pathFrom = []; + while (true) { + if (!from) { + break; + } + if (from === common) { + break; + } + var alternate = from.alternate; + if (alternate !== null && alternate === common) { + break; + } + pathFrom.push(from); + from = getParent(from); + } + var pathTo = []; + while (true) { + if (!to) { + break; + } + if (to === common) { + break; + } + var _alternate = to.alternate; + if (_alternate !== null && _alternate === common) { + break; + } + pathTo.push(to); + to = getParent(to); + } + for (var i = 0; i < pathFrom.length; i++) { + fn(pathFrom[i], 'bubbled', argFrom); + } + for (var _i = pathTo.length; _i-- > 0;) { + fn(pathTo[_i], 'captured', argTo); + } +} + +/** + * Some event types have a notion of different registration names for different + * "phases" of propagation. This finds listeners by a given phase. + */ +function listenerAtPhase(inst, event, propagationPhase) { + var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; + return getListener(inst, registrationName); +} + +/** + * A small set of propagation patterns, each of which will accept a small amount + * of information, and generate a set of "dispatch ready event objects" - which + * are sets of events that have already been annotated with a set of dispatched + * listener functions/ids. The API is designed this way to discourage these + * propagation strategies from actually executing the dispatches, since we + * always want to collect the entire set of dispatches before executing even a + * single one. + */ + +/** + * Tags a `SyntheticEvent` with dispatched listeners. Creating this function + * here, allows us to not have to bind or create functions for each event. + * Mutating the event's members allows us to not have to create a wrapping + * "dispatch" object that pairs the event with the listener. + */ +function accumulateDirectionalDispatches(inst, phase, event) { + var listener = listenerAtPhase(inst, event, phase); + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } +} + +/** + * Collect dispatches (must be entirely collected before dispatching - see unit + * tests). Lazily allocate the array to conserve memory. We must loop through + * each event and perform the traversal for each one. We cannot perform a + * single traversal for the entire collection of events because each event may + * have a different target. + */ +function accumulateTwoPhaseDispatchesSingle(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event); + } +} + +/** + * Accumulates without regard to direction, does not look for phased + * registration names. Same as `accumulateDirectDispatchesSingle` but without + * requiring that the `dispatchMarker` be the same as the dispatched ID. + */ +function accumulateDispatches(inst, ignoredDirection, event) { + if (inst && event && event.dispatchConfig.registrationName) { + var registrationName = event.dispatchConfig.registrationName; + var listener = getListener(inst, registrationName); + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } + } +} + +/** + * Accumulates dispatches on an `SyntheticEvent`, but only for the + * `dispatchMarker`. + * @param {SyntheticEvent} event + */ +function accumulateDirectDispatchesSingle(event) { + if (event && event.dispatchConfig.registrationName) { + accumulateDispatches(event._targetInst, null, event); + } +} + +function accumulateTwoPhaseDispatches(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); +} + + + +function accumulateEnterLeaveDispatches(leave, enter, from, to) { + traverseEnterLeave(from, to, accumulateDispatches, leave, enter); +} + +function accumulateDirectDispatches(events) { + forEachAccumulated(events, accumulateDirectDispatchesSingle); +} + +var canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement); + +// Do not uses the below two methods directly! +// Instead use constants exported from DOMTopLevelEventTypes in ReactDOM. +// (It is the only module that is allowed to access these methods.) + +function unsafeCastStringToDOMTopLevelType(topLevelType) { + return topLevelType; +} + +function unsafeCastDOMTopLevelTypeToString(topLevelType) { + return topLevelType; +} + +/** + * Generate a mapping of standard vendor prefixes using the defined style property and event name. + * + * @param {string} styleProp + * @param {string} eventName + * @returns {object} + */ +function makePrefixMap(styleProp, eventName) { + var prefixes = {}; + + prefixes[styleProp.toLowerCase()] = eventName.toLowerCase(); + prefixes['Webkit' + styleProp] = 'webkit' + eventName; + prefixes['Moz' + styleProp] = 'moz' + eventName; + + return prefixes; +} + +/** + * A list of event names to a configurable list of vendor prefixes. + */ +var vendorPrefixes = { + animationend: makePrefixMap('Animation', 'AnimationEnd'), + animationiteration: makePrefixMap('Animation', 'AnimationIteration'), + animationstart: makePrefixMap('Animation', 'AnimationStart'), + transitionend: makePrefixMap('Transition', 'TransitionEnd') +}; + +/** + * Event names that have already been detected and prefixed (if applicable). + */ +var prefixedEventNames = {}; + +/** + * Element to check for prefixes on. + */ +var style = {}; + +/** + * Bootstrap if a DOM exists. + */ +if (canUseDOM) { + style = document.createElementNS('http://www.w3.org/1999/xhtml', 'div').style; + + // On some platforms, in particular some releases of Android 4.x, + // the un-prefixed "animation" and "transition" properties are defined on the + // style object but the events that fire will still be prefixed, so we need + // to check if the un-prefixed events are usable, and if not remove them from the map. + if (!('AnimationEvent' in window)) { + delete vendorPrefixes.animationend.animation; + delete vendorPrefixes.animationiteration.animation; + delete vendorPrefixes.animationstart.animation; + } + + // Same as above + if (!('TransitionEvent' in window)) { + delete vendorPrefixes.transitionend.transition; + } +} + +/** + * Attempts to determine the correct vendor prefixed event name. + * + * @param {string} eventName + * @returns {string} + */ +function getVendorPrefixedEventName(eventName) { + if (prefixedEventNames[eventName]) { + return prefixedEventNames[eventName]; + } else if (!vendorPrefixes[eventName]) { + return eventName; + } + + var prefixMap = vendorPrefixes[eventName]; + + for (var styleProp in prefixMap) { + if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) { + return prefixedEventNames[eventName] = prefixMap[styleProp]; + } + } + + return eventName; +} + +/** + * To identify top level events in ReactDOM, we use constants defined by this + * module. This is the only module that uses the unsafe* methods to express + * that the constants actually correspond to the browser event names. This lets + * us save some bundle size by avoiding a top level type -> event name map. + * The rest of ReactDOM code should import top level types from this file. + */ +var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort'); +var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend')); +var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration')); +var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart')); +var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur'); +var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay'); +var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough'); +var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel'); +var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change'); +var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click'); +var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close'); +var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend'); +var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart'); +var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate'); +var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu'); +var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy'); +var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut'); +var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick'); +var TOP_AUX_CLICK = unsafeCastStringToDOMTopLevelType('auxclick'); +var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag'); +var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend'); +var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter'); +var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit'); +var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave'); +var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover'); +var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart'); +var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop'); +var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange'); +var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied'); +var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted'); +var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended'); +var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error'); +var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus'); +var TOP_GOT_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('gotpointercapture'); +var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input'); +var TOP_INVALID = unsafeCastStringToDOMTopLevelType('invalid'); +var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown'); +var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress'); +var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup'); +var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load'); +var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart'); +var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata'); +var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata'); +var TOP_LOST_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('lostpointercapture'); +var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown'); +var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove'); +var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout'); +var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover'); +var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup'); +var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste'); +var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause'); +var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play'); +var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing'); +var TOP_POINTER_CANCEL = unsafeCastStringToDOMTopLevelType('pointercancel'); +var TOP_POINTER_DOWN = unsafeCastStringToDOMTopLevelType('pointerdown'); + + +var TOP_POINTER_MOVE = unsafeCastStringToDOMTopLevelType('pointermove'); +var TOP_POINTER_OUT = unsafeCastStringToDOMTopLevelType('pointerout'); +var TOP_POINTER_OVER = unsafeCastStringToDOMTopLevelType('pointerover'); +var TOP_POINTER_UP = unsafeCastStringToDOMTopLevelType('pointerup'); +var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress'); +var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange'); +var TOP_RESET = unsafeCastStringToDOMTopLevelType('reset'); +var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll'); +var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked'); +var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking'); +var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange'); +var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled'); +var TOP_SUBMIT = unsafeCastStringToDOMTopLevelType('submit'); +var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend'); +var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput'); +var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate'); +var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle'); +var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel'); +var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend'); +var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove'); +var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart'); +var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend')); +var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange'); +var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting'); +var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel'); + +// List of events that need to be individually attached to media elements. +// Note that events in this list will *not* be listened to at the top level +// unless they're explicitly whitelisted in `ReactBrowserEventEmitter.listenTo`. +var mediaEventTypes = [TOP_ABORT, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_VOLUME_CHANGE, TOP_WAITING]; + +function getRawEventName(topLevelType) { + return unsafeCastDOMTopLevelTypeToString(topLevelType); +} + +/** + * These variables store information about text content of a target node, + * allowing comparison of content before and after a given event. + * + * Identify the node where selection currently begins, then observe + * both its text content and its current position in the DOM. Since the + * browser may natively replace the target node during composition, we can + * use its position to find its replacement. + * + * + */ + +var root = null; +var startText = null; +var fallbackText = null; + +function initialize(nativeEventTarget) { + root = nativeEventTarget; + startText = getText(); + return true; +} + +function reset() { + root = null; + startText = null; + fallbackText = null; +} + +function getData() { + if (fallbackText) { + return fallbackText; + } + + var start = void 0; + var startValue = startText; + var startLength = startValue.length; + var end = void 0; + var endValue = getText(); + var endLength = endValue.length; + + for (start = 0; start < startLength; start++) { + if (startValue[start] !== endValue[start]) { + break; + } + } + + var minEnd = startLength - start; + for (end = 1; end <= minEnd; end++) { + if (startValue[startLength - end] !== endValue[endLength - end]) { + break; + } + } + + var sliceTail = end > 1 ? 1 - end : undefined; + fallbackText = endValue.slice(start, sliceTail); + return fallbackText; +} + +function getText() { + if ('value' in root) { + return root.value; + } + return root.textContent; +} + +var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; + +var _assign = ReactInternals.assign; + +/* eslint valid-typeof: 0 */ + +var EVENT_POOL_SIZE = 10; + +/** + * @interface Event + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var EventInterface = { + type: null, + target: null, + // currentTarget is set when dispatching; no use in copying it here + currentTarget: function () { + return null; + }, + eventPhase: null, + bubbles: null, + cancelable: null, + timeStamp: function (event) { + return event.timeStamp || Date.now(); + }, + defaultPrevented: null, + isTrusted: null +}; + +function functionThatReturnsTrue() { + return true; +} + +function functionThatReturnsFalse() { + return false; +} + +/** + * Synthetic events are dispatched by event plugins, typically in response to a + * top-level event delegation handler. + * + * These systems should generally use pooling to reduce the frequency of garbage + * collection. The system should check `isPersistent` to determine whether the + * event should be released into the pool after being dispatched. Users that + * need a persisted event should invoke `persist`. + * + * Synthetic events (and subclasses) implement the DOM Level 3 Events API by + * normalizing browser quirks. Subclasses do not necessarily have to implement a + * DOM interface; custom application-specific events can also subclass this. + * + * @param {object} dispatchConfig Configuration used to dispatch this event. + * @param {*} targetInst Marker identifying the event target. + * @param {object} nativeEvent Native browser event. + * @param {DOMEventTarget} nativeEventTarget Target node. + */ +function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) { + this.dispatchConfig = dispatchConfig; + this._targetInst = targetInst; + this.nativeEvent = nativeEvent; + + var Interface = this.constructor.Interface; + for (var propName in Interface) { + if (!Interface.hasOwnProperty(propName)) { + continue; + } + var normalize = Interface[propName]; + if (normalize) { + this[propName] = normalize(nativeEvent); + } else { + if (propName === 'target') { + this.target = nativeEventTarget; + } else { + this[propName] = nativeEvent[propName]; + } + } + } + + var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false; + if (defaultPrevented) { + this.isDefaultPrevented = functionThatReturnsTrue; + } else { + this.isDefaultPrevented = functionThatReturnsFalse; + } + this.isPropagationStopped = functionThatReturnsFalse; + return this; +} + +_assign(SyntheticEvent.prototype, { + preventDefault: function () { + this.defaultPrevented = true; + var event = this.nativeEvent; + if (!event) { + return; + } + + if (event.preventDefault) { + event.preventDefault(); + } else if (typeof event.returnValue !== 'unknown') { + event.returnValue = false; + } + this.isDefaultPrevented = functionThatReturnsTrue; + }, + + stopPropagation: function () { + var event = this.nativeEvent; + if (!event) { + return; + } + + if (event.stopPropagation) { + event.stopPropagation(); + } else if (typeof event.cancelBubble !== 'unknown') { + // The ChangeEventPlugin registers a "propertychange" event for + // IE. This event does not support bubbling or cancelling, and + // any references to cancelBubble throw "Member not found". A + // typeof check of "unknown" circumvents this issue (and is also + // IE specific). + event.cancelBubble = true; + } + + this.isPropagationStopped = functionThatReturnsTrue; + }, + + /** + * We release all dispatched `SyntheticEvent`s after each event loop, adding + * them back into the pool. This allows a way to hold onto a reference that + * won't be added back into the pool. + */ + persist: function () { + this.isPersistent = functionThatReturnsTrue; + }, + + /** + * Checks if this event should be released back into the pool. + * + * @return {boolean} True if this should not be released, false otherwise. + */ + isPersistent: functionThatReturnsFalse, + + /** + * `PooledClass` looks for `destructor` on each instance it releases. + */ + destructor: function () { + var Interface = this.constructor.Interface; + for (var propName in Interface) { + { + this[propName] = null; + } + } + this.dispatchConfig = null; + this._targetInst = null; + this.nativeEvent = null; + this.isDefaultPrevented = functionThatReturnsFalse; + this.isPropagationStopped = functionThatReturnsFalse; + this._dispatchListeners = null; + this._dispatchInstances = null; + + } +}); + +SyntheticEvent.Interface = EventInterface; + +/** + * Helper to reduce boilerplate when creating subclasses. + */ +SyntheticEvent.extend = function (Interface) { + var Super = this; + + var E = function () {}; + E.prototype = Super.prototype; + var prototype = new E(); + + function Class() { + return Super.apply(this, arguments); + } + _assign(prototype, Class.prototype); + Class.prototype = prototype; + Class.prototype.constructor = Class; + + Class.Interface = _assign({}, Super.Interface, Interface); + Class.extend = Super.extend; + addEventPoolingTo(Class); + + return Class; +}; + +addEventPoolingTo(SyntheticEvent); + +function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) { + var EventConstructor = this; + if (EventConstructor.eventPool.length) { + var instance = EventConstructor.eventPool.pop(); + EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst); + return instance; + } + return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst); +} + +function releasePooledEvent(event) { + var EventConstructor = this; + !(event instanceof EventConstructor) ? reactProdInvariant('279') : void 0; + event.destructor(); + if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { + EventConstructor.eventPool.push(event); + } +} + +function addEventPoolingTo(EventConstructor) { + EventConstructor.eventPool = []; + EventConstructor.getPooled = getPooledEvent; + EventConstructor.release = releasePooledEvent; +} + +/** + * @interface Event + * @see http://www.w3.org/TR/DOM-Level-3-Events/#events-compositionevents + */ +var SyntheticCompositionEvent = SyntheticEvent.extend({ + data: null +}); + +/** + * @interface Event + * @see http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105 + * /#events-inputevents + */ +var SyntheticInputEvent = SyntheticEvent.extend({ + data: null +}); + +var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space +var START_KEYCODE = 229; + +var canUseCompositionEvent = canUseDOM && 'CompositionEvent' in window; + +var documentMode = null; +if (canUseDOM && 'documentMode' in document) { + documentMode = document.documentMode; +} + +// Webkit offers a very useful `textInput` event that can be used to +// directly represent `beforeInput`. The IE `textinput` event is not as +// useful, so we don't use it. +var canUseTextInputEvent = canUseDOM && 'TextEvent' in window && !documentMode; + +// In IE9+, we have access to composition events, but the data supplied +// by the native compositionend event may be incorrect. Japanese ideographic +// spaces, for instance (\u3000) are not recorded correctly. +var useFallbackCompositionData = canUseDOM && (!canUseCompositionEvent || documentMode && documentMode > 8 && documentMode <= 11); + +var SPACEBAR_CODE = 32; +var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE); + +// Events and their corresponding property names. +var eventTypes = { + beforeInput: { + phasedRegistrationNames: { + bubbled: 'onBeforeInput', + captured: 'onBeforeInputCapture' + }, + dependencies: [TOP_COMPOSITION_END, TOP_KEY_PRESS, TOP_TEXT_INPUT, TOP_PASTE] + }, + compositionEnd: { + phasedRegistrationNames: { + bubbled: 'onCompositionEnd', + captured: 'onCompositionEndCapture' + }, + dependencies: [TOP_BLUR, TOP_COMPOSITION_END, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN] + }, + compositionStart: { + phasedRegistrationNames: { + bubbled: 'onCompositionStart', + captured: 'onCompositionStartCapture' + }, + dependencies: [TOP_BLUR, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN] + }, + compositionUpdate: { + phasedRegistrationNames: { + bubbled: 'onCompositionUpdate', + captured: 'onCompositionUpdateCapture' + }, + dependencies: [TOP_BLUR, TOP_COMPOSITION_UPDATE, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN] + } +}; + +// Track whether we've ever handled a keypress on the space key. +var hasSpaceKeypress = false; + +/** + * Return whether a native keypress event is assumed to be a command. + * This is required because Firefox fires `keypress` events for key commands + * (cut, copy, select-all, etc.) even though no character is inserted. + */ +function isKeypressCommand(nativeEvent) { + return (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) && + // ctrlKey && altKey is equivalent to AltGr, and is not a command. + !(nativeEvent.ctrlKey && nativeEvent.altKey); +} + +/** + * Translate native top level events into event types. + * + * @param {string} topLevelType + * @return {object} + */ +function getCompositionEventType(topLevelType) { + switch (topLevelType) { + case TOP_COMPOSITION_START: + return eventTypes.compositionStart; + case TOP_COMPOSITION_END: + return eventTypes.compositionEnd; + case TOP_COMPOSITION_UPDATE: + return eventTypes.compositionUpdate; + } +} + +/** + * Does our fallback best-guess model think this event signifies that + * composition has begun? + * + * @param {string} topLevelType + * @param {object} nativeEvent + * @return {boolean} + */ +function isFallbackCompositionStart(topLevelType, nativeEvent) { + return topLevelType === TOP_KEY_DOWN && nativeEvent.keyCode === START_KEYCODE; +} + +/** + * Does our fallback mode think that this event is the end of composition? + * + * @param {string} topLevelType + * @param {object} nativeEvent + * @return {boolean} + */ +function isFallbackCompositionEnd(topLevelType, nativeEvent) { + switch (topLevelType) { + case TOP_KEY_UP: + // Command keys insert or clear IME input. + return END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1; + case TOP_KEY_DOWN: + // Expect IME keyCode on each keydown. If we get any other + // code we must have exited earlier. + return nativeEvent.keyCode !== START_KEYCODE; + case TOP_KEY_PRESS: + case TOP_MOUSE_DOWN: + case TOP_BLUR: + // Events are not possible without cancelling IME. + return true; + default: + return false; + } +} + +/** + * Google Input Tools provides composition data via a CustomEvent, + * with the `data` property populated in the `detail` object. If this + * is available on the event object, use it. If not, this is a plain + * composition event and we have nothing special to extract. + * + * @param {object} nativeEvent + * @return {?string} + */ +function getDataFromCustomEvent(nativeEvent) { + var detail = nativeEvent.detail; + if (typeof detail === 'object' && 'data' in detail) { + return detail.data; + } + return null; +} + +/** + * Check if a composition event was triggered by Korean IME. + * Our fallback mode does not work well with IE's Korean IME, + * so just use native composition events when Korean IME is used. + * Although CompositionEvent.locale property is deprecated, + * it is available in IE, where our fallback mode is enabled. + * + * @param {object} nativeEvent + * @return {boolean} + */ +function isUsingKoreanIME(nativeEvent) { + return nativeEvent.locale === 'ko'; +} + +// Track the current IME composition status, if any. +var isComposing = false; + +/** + * @return {?object} A SyntheticCompositionEvent. + */ +function extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var eventType = void 0; + var fallbackData = void 0; + + if (canUseCompositionEvent) { + eventType = getCompositionEventType(topLevelType); + } else if (!isComposing) { + if (isFallbackCompositionStart(topLevelType, nativeEvent)) { + eventType = eventTypes.compositionStart; + } + } else if (isFallbackCompositionEnd(topLevelType, nativeEvent)) { + eventType = eventTypes.compositionEnd; + } + + if (!eventType) { + return null; + } + + if (useFallbackCompositionData && !isUsingKoreanIME(nativeEvent)) { + // The current composition is stored statically and must not be + // overwritten while composition continues. + if (!isComposing && eventType === eventTypes.compositionStart) { + isComposing = initialize(nativeEventTarget); + } else if (eventType === eventTypes.compositionEnd) { + if (isComposing) { + fallbackData = getData(); + } + } + } + + var event = SyntheticCompositionEvent.getPooled(eventType, targetInst, nativeEvent, nativeEventTarget); + + if (fallbackData) { + // Inject data generated from fallback path into the synthetic event. + // This matches the property of native CompositionEventInterface. + event.data = fallbackData; + } else { + var customData = getDataFromCustomEvent(nativeEvent); + if (customData !== null) { + event.data = customData; + } + } + + accumulateTwoPhaseDispatches(event); + return event; +} + +/** + * @param {TopLevelType} topLevelType Number from `TopLevelType`. + * @param {object} nativeEvent Native browser event. + * @return {?string} The string corresponding to this `beforeInput` event. + */ +function getNativeBeforeInputChars(topLevelType, nativeEvent) { + switch (topLevelType) { + case TOP_COMPOSITION_END: + return getDataFromCustomEvent(nativeEvent); + case TOP_KEY_PRESS: + /** + * If native `textInput` events are available, our goal is to make + * use of them. However, there is a special case: the spacebar key. + * In Webkit, preventing default on a spacebar `textInput` event + * cancels character insertion, but it *also* causes the browser + * to fall back to its default spacebar behavior of scrolling the + * page. + * + * Tracking at: + * https://code.google.com/p/chromium/issues/detail?id=355103 + * + * To avoid this issue, use the keypress event as if no `textInput` + * event is available. + */ + var which = nativeEvent.which; + if (which !== SPACEBAR_CODE) { + return null; + } + + hasSpaceKeypress = true; + return SPACEBAR_CHAR; + + case TOP_TEXT_INPUT: + // Record the characters to be added to the DOM. + var chars = nativeEvent.data; + + // If it's a spacebar character, assume that we have already handled + // it at the keypress level and bail immediately. Android Chrome + // doesn't give us keycodes, so we need to ignore it. + if (chars === SPACEBAR_CHAR && hasSpaceKeypress) { + return null; + } + + return chars; + + default: + // For other native event types, do nothing. + return null; + } +} + +/** + * For browsers that do not provide the `textInput` event, extract the + * appropriate string to use for SyntheticInputEvent. + * + * @param {number} topLevelType Number from `TopLevelEventTypes`. + * @param {object} nativeEvent Native browser event. + * @return {?string} The fallback string for this `beforeInput` event. + */ +function getFallbackBeforeInputChars(topLevelType, nativeEvent) { + // If we are currently composing (IME) and using a fallback to do so, + // try to extract the composed characters from the fallback object. + // If composition event is available, we extract a string only at + // compositionevent, otherwise extract it at fallback events. + if (isComposing) { + if (topLevelType === TOP_COMPOSITION_END || !canUseCompositionEvent && isFallbackCompositionEnd(topLevelType, nativeEvent)) { + var chars = getData(); + reset(); + isComposing = false; + return chars; + } + return null; + } + + switch (topLevelType) { + case TOP_PASTE: + // If a paste event occurs after a keypress, throw out the input + // chars. Paste events should not lead to BeforeInput events. + return null; + case TOP_KEY_PRESS: + /** + * As of v27, Firefox may fire keypress events even when no character + * will be inserted. A few possibilities: + * + * - `which` is `0`. Arrow keys, Esc key, etc. + * + * - `which` is the pressed key code, but no char is available. + * Ex: 'AltGr + d` in Polish. There is no modified character for + * this key combination and no character is inserted into the + * document, but FF fires the keypress for char code `100` anyway. + * No `input` event will occur. + * + * - `which` is the pressed key code, but a command combination is + * being used. Ex: `Cmd+C`. No character is inserted, and no + * `input` event will occur. + */ + if (!isKeypressCommand(nativeEvent)) { + // IE fires the `keypress` event when a user types an emoji via + // Touch keyboard of Windows. In such a case, the `char` property + // holds an emoji character like `\uD83D\uDE0A`. Because its length + // is 2, the property `which` does not represent an emoji correctly. + // In such a case, we directly return the `char` property instead of + // using `which`. + if (nativeEvent.char && nativeEvent.char.length > 1) { + return nativeEvent.char; + } else if (nativeEvent.which) { + return String.fromCharCode(nativeEvent.which); + } + } + return null; + case TOP_COMPOSITION_END: + return useFallbackCompositionData && !isUsingKoreanIME(nativeEvent) ? null : nativeEvent.data; + default: + return null; + } +} + +/** + * Extract a SyntheticInputEvent for `beforeInput`, based on either native + * `textInput` or fallback behavior. + * + * @return {?object} A SyntheticInputEvent. + */ +function extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var chars = void 0; + + if (canUseTextInputEvent) { + chars = getNativeBeforeInputChars(topLevelType, nativeEvent); + } else { + chars = getFallbackBeforeInputChars(topLevelType, nativeEvent); + } + + // If no characters are being inserted, no BeforeInput event should + // be fired. + if (!chars) { + return null; + } + + var event = SyntheticInputEvent.getPooled(eventTypes.beforeInput, targetInst, nativeEvent, nativeEventTarget); + + event.data = chars; + accumulateTwoPhaseDispatches(event); + return event; +} + +/** + * Create an `onBeforeInput` event to match + * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents. + * + * This event plugin is based on the native `textInput` event + * available in Chrome, Safari, Opera, and IE. This event fires after + * `onKeyPress` and `onCompositionEnd`, but before `onInput`. + * + * `beforeInput` is spec'd but not implemented in any browsers, and + * the `input` event does not provide any useful information about what has + * actually been added, contrary to the spec. Thus, `textInput` is the best + * available event to identify the characters that have actually been inserted + * into the target node. + * + * This plugin is also responsible for emitting `composition` events, thus + * allowing us to share composition fallback code for both `beforeInput` and + * `composition` event types. + */ +var BeforeInputEventPlugin = { + eventTypes: eventTypes, + + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var composition = extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget); + + var beforeInput = extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget); + + if (composition === null) { + return beforeInput; + } + + if (beforeInput === null) { + return composition; + } + + return [composition, beforeInput]; + } +}; + +// Use to restore controlled state after a change event has fired. + +var restoreImpl = null; +var restoreTarget = null; +var restoreQueue = null; + +function restoreStateOfTarget(target) { + // We perform this translation at the end of the event loop so that we + // always receive the correct fiber here + var internalInstance = getInstanceFromNode(target); + if (!internalInstance) { + // Unmounted + return; + } + !(typeof restoreImpl === 'function') ? reactProdInvariant('280') : void 0; + var props = getFiberCurrentPropsFromNode(internalInstance.stateNode); + restoreImpl(internalInstance.stateNode, internalInstance.type, props); +} + +function setRestoreImplementation(impl) { + restoreImpl = impl; +} + +function enqueueStateRestore(target) { + if (restoreTarget) { + if (restoreQueue) { + restoreQueue.push(target); + } else { + restoreQueue = [target]; + } + } else { + restoreTarget = target; + } +} + +function needsStateRestore() { + return restoreTarget !== null || restoreQueue !== null; +} + +function restoreStateIfNeeded() { + if (!restoreTarget) { + return; + } + var target = restoreTarget; + var queuedTargets = restoreQueue; + restoreTarget = null; + restoreQueue = null; + + restoreStateOfTarget(target); + if (queuedTargets) { + for (var i = 0; i < queuedTargets.length; i++) { + restoreStateOfTarget(queuedTargets[i]); + } + } +} + +// Used as a way to call batchedUpdates when we don't have a reference to +// the renderer. Such as when we're dispatching events or if third party +// libraries need to call batchedUpdates. Eventually, this API will go away when +// everything is batched by default. We'll then have a similar API to opt-out of +// scheduled work and instead do synchronous work. + +// Defaults +var _batchedUpdatesImpl = function (fn, bookkeeping) { + return fn(bookkeeping); +}; +var _interactiveUpdatesImpl = function (fn, a, b) { + return fn(a, b); +}; +var _flushInteractiveUpdatesImpl = function () {}; + +var isBatching = false; +function batchedUpdates(fn, bookkeeping) { + if (isBatching) { + // If we are currently inside another batch, we need to wait until it + // fully completes before restoring state. + return fn(bookkeeping); + } + isBatching = true; + try { + return _batchedUpdatesImpl(fn, bookkeeping); + } finally { + // Here we wait until all updates have propagated, which is important + // when using controlled components within layers: + // https://github.com/facebook/react/issues/1698 + // Then we restore state of any controlled component. + isBatching = false; + var controlledComponentsHavePendingUpdates = needsStateRestore(); + if (controlledComponentsHavePendingUpdates) { + // If a controlled event was fired, we may need to restore the state of + // the DOM node back to the controlled value. This is necessary when React + // bails out of the update without touching the DOM. + _flushInteractiveUpdatesImpl(); + restoreStateIfNeeded(); + } + } +} + +function interactiveUpdates(fn, a, b) { + return _interactiveUpdatesImpl(fn, a, b); +} + + + +function setBatchingImplementation(batchedUpdatesImpl, interactiveUpdatesImpl, flushInteractiveUpdatesImpl) { + _batchedUpdatesImpl = batchedUpdatesImpl; + _interactiveUpdatesImpl = interactiveUpdatesImpl; + _flushInteractiveUpdatesImpl = flushInteractiveUpdatesImpl; +} + +/** + * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary + */ +var supportedInputTypes = { + color: true, + date: true, + datetime: true, + 'datetime-local': true, + email: true, + month: true, + number: true, + password: true, + range: true, + search: true, + tel: true, + text: true, + time: true, + url: true, + week: true +}; + +function isTextInputElement(elem) { + var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase(); + + if (nodeName === 'input') { + return !!supportedInputTypes[elem.type]; + } + + if (nodeName === 'textarea') { + return true; + } + + return false; +} + +/** + * HTML nodeType values that represent the type of the node + */ + +var ELEMENT_NODE = 1; +var TEXT_NODE = 3; +var COMMENT_NODE = 8; +var DOCUMENT_NODE = 9; +var DOCUMENT_FRAGMENT_NODE = 11; + +/** + * Gets the target node from a native browser event by accounting for + * inconsistencies in browser DOM APIs. + * + * @param {object} nativeEvent Native browser event. + * @return {DOMEventTarget} Target node. + */ +function getEventTarget(nativeEvent) { + // Fallback to nativeEvent.srcElement for IE9 + // https://github.com/facebook/react/issues/12506 + var target = nativeEvent.target || nativeEvent.srcElement || window; + + // Normalize SVG element events #4963 + if (target.correspondingUseElement) { + target = target.correspondingUseElement; + } + + // Safari may fire events on text nodes (Node.TEXT_NODE is 3). + // @see http://www.quirksmode.org/js/events_properties.html + return target.nodeType === TEXT_NODE ? target.parentNode : target; +} + +/** + * Checks if an event is supported in the current execution environment. + * + * NOTE: This will not work correctly for non-generic events such as `change`, + * `reset`, `load`, `error`, and `select`. + * + * Borrows from Modernizr. + * + * @param {string} eventNameSuffix Event name, e.g. "click". + * @return {boolean} True if the event is supported. + * @internal + * @license Modernizr 3.0.0pre (Custom Build) | MIT + */ +function isEventSupported(eventNameSuffix) { + if (!canUseDOM) { + return false; + } + + var eventName = 'on' + eventNameSuffix; + var isSupported = eventName in document; + + if (!isSupported) { + var element = document.createElementNS('http://www.w3.org/1999/xhtml', 'div'); + element.setAttribute(eventName, 'return;'); + isSupported = typeof element[eventName] === 'function'; + } + + return isSupported; +} + +function isCheckable(elem) { + var type = elem.type; + var nodeName = elem.nodeName; + return nodeName && nodeName.toLowerCase() === 'input' && (type === 'checkbox' || type === 'radio'); +} + +function getTracker(node) { + return node._valueTracker; +} + +function detachTracker(node) { + node._valueTracker = null; +} + +function getValueFromNode(node) { + var value = ''; + if (!node) { + return value; + } + + if (isCheckable(node)) { + value = node.checked ? 'true' : 'false'; + } else { + value = node.value; + } + + return value; +} + +function trackValueOnNode(node) { + var valueField = isCheckable(node) ? 'checked' : 'value'; + var descriptor = Object.getOwnPropertyDescriptor(node.constructor.prototype, valueField); + + var currentValue = '' + node[valueField]; + + // if someone has already defined a value or Safari, then bail + // and don't track value will cause over reporting of changes, + // but it's better then a hard failure + // (needed for certain tests that spyOn input values and Safari) + if (node.hasOwnProperty(valueField) || typeof descriptor === 'undefined' || typeof descriptor.get !== 'function' || typeof descriptor.set !== 'function') { + return; + } + var get = descriptor.get, + set = descriptor.set; + + Object.defineProperty(node, valueField, { + configurable: true, + get: function () { + return get.call(this); + }, + set: function (value) { + currentValue = '' + value; + set.call(this, value); + } + }); + // We could've passed this the first time + // but it triggers a bug in IE11 and Edge 14/15. + // Calling defineProperty() again should be equivalent. + // https://github.com/facebook/react/issues/11768 + Object.defineProperty(node, valueField, { + enumerable: descriptor.enumerable + }); + + var tracker = { + getValue: function () { + return currentValue; + }, + setValue: function (value) { + currentValue = '' + value; + }, + stopTracking: function () { + detachTracker(node); + delete node[valueField]; + } + }; + return tracker; +} + +function track(node) { + if (getTracker(node)) { + return; + } + + // TODO: Once it's just Fiber we can move this to node._wrapperState + node._valueTracker = trackValueOnNode(node); +} + +function updateValueIfChanged(node) { + if (!node) { + return false; + } + + var tracker = getTracker(node); + // if there is no tracker at this point it's unlikely + // that trying again will succeed + if (!tracker) { + return true; + } + + var lastValue = tracker.getValue(); + var nextValue = getValueFromNode(node); + if (nextValue !== lastValue) { + tracker.setValue(nextValue); + return true; + } + return false; +} + +var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; + +// Prevent newer renderers from RTE when used with older react package versions. +// Current owner and dispatcher used to share the same ref, +// but PR #14548 split them out to better support the react-debug-tools package. +if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) { + ReactSharedInternals.ReactCurrentDispatcher = { + current: null + }; +} + +var BEFORE_SLASH_RE = /^(.*)[\\\/]/; + +var describeComponentFrame = function (name, source, ownerName) { + var sourceInfo = ''; + if (source) { + var path = source.fileName; + var fileName = path.replace(BEFORE_SLASH_RE, ''); + sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')'; + } else if (ownerName) { + sourceInfo = ' (created by ' + ownerName + ')'; + } + return '\n in ' + (name || 'Unknown') + sourceInfo; +}; + +// The Symbol used to tag the ReactElement-like types. If there is no native Symbol +// nor polyfill, then a plain number is used for performance. +var hasSymbol = typeof Symbol === 'function' && Symbol.for; + +var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7; +var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca; +var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb; +var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc; +var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2; +var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd; +var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; + +var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf; +var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0; +var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1; +var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3; +var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4; + +var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; + +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + return null; +} + +var Pending = 0; +var Resolved = 1; +var Rejected = 2; + +function refineResolvedLazyComponent(lazyComponent) { + return lazyComponent._status === Resolved ? lazyComponent._result : null; +} + +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + '(' + functionName + ')' : wrapperName); +} + +function getComponentName(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } + if (typeof type === 'function') { + return type.displayName || type.name || null; + } + if (typeof type === 'string') { + return type; + } + switch (type) { + case REACT_CONCURRENT_MODE_TYPE: + return 'ConcurrentMode'; + case REACT_FRAGMENT_TYPE: + return 'Fragment'; + case REACT_PORTAL_TYPE: + return 'Portal'; + case REACT_PROFILER_TYPE: + return 'Profiler'; + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; + case REACT_SUSPENSE_TYPE: + return 'Suspense'; + } + if (typeof type === 'object') { + switch (type.$$typeof) { + case REACT_CONTEXT_TYPE: + return 'Context.Consumer'; + case REACT_PROVIDER_TYPE: + return 'Context.Provider'; + case REACT_FORWARD_REF_TYPE: + return getWrappedName(type, type.render, 'ForwardRef'); + case REACT_MEMO_TYPE: + return getComponentName(type.type); + case REACT_LAZY_TYPE: + { + var thenable = type; + var resolvedThenable = refineResolvedLazyComponent(thenable); + if (resolvedThenable) { + return getComponentName(resolvedThenable); + } + } + } + } + return null; +} + +var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame; + +function describeFiber(fiber) { + switch (fiber.tag) { + case HostRoot: + case HostPortal: + case HostText: + case Fragment: + case ContextProvider: + case ContextConsumer: + return ''; + default: + var owner = fiber._debugOwner; + var source = fiber._debugSource; + var name = getComponentName(fiber.type); + var ownerName = null; + if (owner) { + ownerName = getComponentName(owner.type); + } + return describeComponentFrame(name, source, ownerName); + } +} + +function getStackByFiberInDevAndProd(workInProgress) { + var info = ''; + var node = workInProgress; + do { + info += describeFiber(node); + node = node.return; + } while (node); + return info; +} + +// A reserved attribute. +// It is handled by React separately and shouldn't be written to the DOM. +var RESERVED = 0; + +// A simple string attribute. +// Attributes that aren't in the whitelist are presumed to have this type. +var STRING = 1; + +// A string attribute that accepts booleans in React. In HTML, these are called +// "enumerated" attributes with "true" and "false" as possible values. +// When true, it should be set to a "true" string. +// When false, it should be set to a "false" string. +var BOOLEANISH_STRING = 2; + +// A real boolean attribute. +// When true, it should be present (set either to an empty string or its name). +// When false, it should be omitted. +var BOOLEAN = 3; + +// An attribute that can be used as a flag as well as with a value. +// When true, it should be present (set either to an empty string or its name). +// When false, it should be omitted. +// For any other value, should be present with that value. +var OVERLOADED_BOOLEAN = 4; + +// An attribute that must be numeric or parse as a numeric. +// When falsy, it should be removed. +var NUMERIC = 5; + +// An attribute that must be positive numeric or parse as a positive numeric. +// When falsy, it should be removed. +var POSITIVE_NUMERIC = 6; + +/* eslint-disable max-len */ +var ATTRIBUTE_NAME_START_CHAR = ':A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD'; +/* eslint-enable max-len */ +var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + '\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040'; + + +var ROOT_ATTRIBUTE_NAME = 'data-reactroot'; +var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$'); + +var hasOwnProperty = Object.prototype.hasOwnProperty; +var illegalAttributeNameCache = {}; +var validatedAttributeNameCache = {}; + +function isAttributeNameSafe(attributeName) { + if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) { + return true; + } + if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) { + return false; + } + if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) { + validatedAttributeNameCache[attributeName] = true; + return true; + } + illegalAttributeNameCache[attributeName] = true; + return false; +} + +function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) { + if (propertyInfo !== null) { + return propertyInfo.type === RESERVED; + } + if (isCustomComponentTag) { + return false; + } + if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) { + return true; + } + return false; +} + +function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) { + if (propertyInfo !== null && propertyInfo.type === RESERVED) { + return false; + } + switch (typeof value) { + case 'function': + // $FlowIssue symbol is perfectly valid here + case 'symbol': + // eslint-disable-line + return true; + case 'boolean': + { + if (isCustomComponentTag) { + return false; + } + if (propertyInfo !== null) { + return !propertyInfo.acceptsBooleans; + } else { + var prefix = name.toLowerCase().slice(0, 5); + return prefix !== 'data-' && prefix !== 'aria-'; + } + } + default: + return false; + } +} + +function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) { + if (value === null || typeof value === 'undefined') { + return true; + } + if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) { + return true; + } + if (isCustomComponentTag) { + return false; + } + if (propertyInfo !== null) { + switch (propertyInfo.type) { + case BOOLEAN: + return !value; + case OVERLOADED_BOOLEAN: + return value === false; + case NUMERIC: + return isNaN(value); + case POSITIVE_NUMERIC: + return isNaN(value) || value < 1; + } + } + return false; +} + +function getPropertyInfo(name) { + return properties.hasOwnProperty(name) ? properties[name] : null; +} + +function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace) { + this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN; + this.attributeName = attributeName; + this.attributeNamespace = attributeNamespace; + this.mustUseProperty = mustUseProperty; + this.propertyName = name; + this.type = type; +} + +// When adding attributes to this list, be sure to also add them to +// the `possibleStandardNames` module to ensure casing and incorrect +// name warnings. +var properties = {}; + +// These props are reserved by React. They shouldn't be written to the DOM. +['children', 'dangerouslySetInnerHTML', +// TODO: This prevents the assignment of defaultValue to regular +// elements (not just inputs). Now that ReactDOMInput assigns to the +// defaultValue property -- do we need this? +'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty + name, // attributeName + null); +} // attributeNamespace +); + +// A few React string attributes have a different name. +// This is a mapping from React prop names to the attribute names. +[['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) { + var name = _ref[0], + attributeName = _ref[1]; + + properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty + attributeName, // attributeName + null); +} // attributeNamespace +); + +// These are "enumerated" HTML attributes that accept "true" and "false". +// In React, we let users pass `true` and `false` even though technically +// these aren't boolean attributes (they are coerced to strings). +['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty + name.toLowerCase(), // attributeName + null); +} // attributeNamespace +); + +// These are "enumerated" SVG attributes that accept "true" and "false". +// In React, we let users pass `true` and `false` even though technically +// these aren't boolean attributes (they are coerced to strings). +// Since these are SVG attributes, their attribute names are case-sensitive. +['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty + name, // attributeName + null); +} // attributeNamespace +); + +// These are HTML boolean attributes. +['allowFullScreen', 'async', +// Note: there is a special case that prevents it from being written to the DOM +// on the client side because the browsers are inconsistent. Instead we call focus(). +'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', +// Microdata +'itemScope'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty + name.toLowerCase(), // attributeName + null); +} // attributeNamespace +); + +// These are the few React props that we set as DOM properties +// rather than attributes. These are all booleans. +['checked', +// Note: `option.selected` is not updated if `select.multiple` is +// disabled with `removeAttribute`. We have special logic for handling this. +'multiple', 'muted', 'selected'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty + name, // attributeName + null); +} // attributeNamespace +); + +// These are HTML attributes that are "overloaded booleans": they behave like +// booleans, but can also accept a string value. +['capture', 'download'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty + name, // attributeName + null); +} // attributeNamespace +); + +// These are HTML attributes that must be positive numbers. +['cols', 'rows', 'size', 'span'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty + name, // attributeName + null); +} // attributeNamespace +); + +// These are HTML attributes that must be numbers. +['rowSpan', 'start'].forEach(function (name) { + properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty + name.toLowerCase(), // attributeName + null); +} // attributeNamespace +); + +var CAMELIZE = /[\-\:]([a-z])/g; +var capitalize = function (token) { + return token[1].toUpperCase(); +}; + +// This is a list of all SVG attributes that need special casing, namespacing, +// or boolean value assignment. Regular attributes that just accept strings +// and have the same names are omitted, just like in the HTML whitelist. +// Some of these attributes can be hard to find. This list was created by +// scrapping the MDN documentation. +['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height'].forEach(function (attributeName) { + var name = attributeName.replace(CAMELIZE, capitalize); + properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty + attributeName, null); +} // attributeNamespace +); + +// String SVG attributes with the xlink namespace. +['xlink:actuate', 'xlink:arcrole', 'xlink:href', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type'].forEach(function (attributeName) { + var name = attributeName.replace(CAMELIZE, capitalize); + properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty + attributeName, 'http://www.w3.org/1999/xlink'); +}); + +// String SVG attributes with the xml namespace. +['xml:base', 'xml:lang', 'xml:space'].forEach(function (attributeName) { + var name = attributeName.replace(CAMELIZE, capitalize); + properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty + attributeName, 'http://www.w3.org/XML/1998/namespace'); +}); + +// These attribute exists both in HTML and SVG. +// The attribute name is case-sensitive in SVG so we can't just use +// the React name like we do for attributes that exist only in HTML. +['tabIndex', 'crossOrigin'].forEach(function (attributeName) { + properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty + attributeName.toLowerCase(), // attributeName + null); +} // attributeNamespace +); + +/** + * Get the value for a property on a node. Only used in DEV for SSR validation. + * The "expected" argument is used as a hint of what the expected value is. + * Some properties have multiple equivalent values. + */ + + +/** + * Get the value for a attribute on a node. Only used in DEV for SSR validation. + * The third argument is used as a hint of what the expected value is. Some + * attributes have multiple equivalent values. + */ + + +/** + * Sets the value for a property on a node. + * + * @param {DOMElement} node + * @param {string} name + * @param {*} value + */ +function setValueForProperty(node, name, value, isCustomComponentTag) { + var propertyInfo = getPropertyInfo(name); + if (shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag)) { + return; + } + if (shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag)) { + value = null; + } + // If the prop isn't in the special list, treat it as a simple attribute. + if (isCustomComponentTag || propertyInfo === null) { + if (isAttributeNameSafe(name)) { + var _attributeName = name; + if (value === null) { + node.removeAttribute(_attributeName); + } else { + node.setAttribute(_attributeName, '' + value); + } + } + return; + } + var mustUseProperty = propertyInfo.mustUseProperty; + + if (mustUseProperty) { + var propertyName = propertyInfo.propertyName; + + if (value === null) { + var type = propertyInfo.type; + + node[propertyName] = type === BOOLEAN ? false : ''; + } else { + // Contrary to `setAttribute`, object properties are properly + // `toString`ed by IE8/9. + node[propertyName] = value; + } + return; + } + // The rest are treated as attributes with special cases. + var attributeName = propertyInfo.attributeName, + attributeNamespace = propertyInfo.attributeNamespace; + + if (value === null) { + node.removeAttribute(attributeName); + } else { + var _type = propertyInfo.type; + + var attributeValue = void 0; + if (_type === BOOLEAN || _type === OVERLOADED_BOOLEAN && value === true) { + attributeValue = ''; + } else { + // `setAttribute` with objects becomes only `[object]` in IE8/9, + // ('' + value) makes it output the correct toString()-value. + attributeValue = '' + value; + } + if (attributeNamespace) { + node.setAttributeNS(attributeNamespace, attributeName, attributeValue); + } else { + node.setAttribute(attributeName, attributeValue); + } + } +} + +// Flow does not allow string concatenation of most non-string types. To work +// around this limitation, we use an opaque type that can only be obtained by +// passing the value through getToStringValue first. +function toString(value) { + return '' + value; +} + +function getToStringValue(value) { + switch (typeof value) { + case 'boolean': + case 'number': + case 'object': + case 'string': + case 'undefined': + return value; + default: + // function, symbol are assigned as empty strings + return ''; + } +} + +/** + * Copyright (c) 2013-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + +var enableUserTimingAPI = false; + +// Helps identify side effects in begin-phase lifecycle hooks and setState reducers: + + +// In some cases, StrictMode should also double-render lifecycles. +// This can be confusing for tests though, +// And it can be bad for performance in production. +// This feature flag can be used to control the behavior: + + +// To preserve the "Pause on caught exceptions" behavior of the debugger, we +// replay the begin phase of a failed component inside invokeGuardedCallback. + + +// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6: + + +// Gather advanced timing metrics for Profiler subtrees. +var enableProfilerTimer = false; + +// Trace which interactions trigger each commit. +var enableSchedulerTracing = false; + +// Only used in www builds. +var enableSuspenseServerRenderer = false; // TODO: false? Here it might just be false. + +// Only used in www builds. + + +// Only used in www builds. + + +// React Fire: prevent the value and checked attributes from syncing +// with their related DOM properties +var disableInputAttributeSyncing = false; + +// These APIs will no longer be "unstable" in the upcoming 16.7 release, +// Control this behavior with a flag to support 16.6 minor releases in the meanwhile. +var enableStableConcurrentModeAPIs = false; + +// TODO: direct imports like some-package/src/* are bad. Fix me. +function isControlled(props) { + var usesChecked = props.type === 'checkbox' || props.type === 'radio'; + return usesChecked ? props.checked != null : props.value != null; +} + +/** + * Implements an host component that allows setting these optional + * props: `checked`, `value`, `defaultChecked`, and `defaultValue`. + * + * If `checked` or `value` are not supplied (or null/undefined), user actions + * that affect the checked state or value will trigger updates to the element. + * + * If they are supplied (and not null/undefined), the rendered element will not + * trigger updates to the element. Instead, the props must change in order for + * the rendered element to be updated. + * + * The rendered element will be initialized as unchecked (or `defaultChecked`) + * with an empty value (or `defaultValue`). + * + * See http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html + */ + +function getHostProps(element, props) { + var node = element; + var checked = props.checked; + + var hostProps = _assign({}, props, { + defaultChecked: undefined, + defaultValue: undefined, + value: undefined, + checked: checked != null ? checked : node._wrapperState.initialChecked + }); + + return hostProps; +} + +function initWrapperState(element, props) { + var node = element; + var defaultValue = props.defaultValue == null ? '' : props.defaultValue; + + node._wrapperState = { + initialChecked: props.checked != null ? props.checked : props.defaultChecked, + initialValue: getToStringValue(props.value != null ? props.value : defaultValue), + controlled: isControlled(props) + }; +} + +function updateChecked(element, props) { + var node = element; + var checked = props.checked; + if (checked != null) { + setValueForProperty(node, 'checked', checked, false); + } +} + +function updateWrapper(element, props) { + var node = element; + updateChecked(element, props); + + var value = getToStringValue(props.value); + var type = props.type; + + if (value != null) { + if (type === 'number') { + if (value === 0 && node.value === '' || + // We explicitly want to coerce to number here if possible. + // eslint-disable-next-line + node.value != value) { + node.value = toString(value); + } + } else if (node.value !== toString(value)) { + node.value = toString(value); + } + } else if (type === 'submit' || type === 'reset') { + // Submit/reset inputs need the attribute removed completely to avoid + // blank-text buttons. + node.removeAttribute('value'); + return; + } + + if (disableInputAttributeSyncing) { + // When not syncing the value attribute, React only assigns a new value + // whenever the defaultValue React prop has changed. When not present, + // React does nothing + if (props.hasOwnProperty('defaultValue')) { + setDefaultValue(node, props.type, getToStringValue(props.defaultValue)); + } + } else { + // When syncing the value attribute, the value comes from a cascade of + // properties: + // 1. The value React property + // 2. The defaultValue React property + // 3. Otherwise there should be no change + if (props.hasOwnProperty('value')) { + setDefaultValue(node, props.type, value); + } else if (props.hasOwnProperty('defaultValue')) { + setDefaultValue(node, props.type, getToStringValue(props.defaultValue)); + } + } + + if (disableInputAttributeSyncing) { + // When not syncing the checked attribute, the attribute is directly + // controllable from the defaultValue React property. It needs to be + // updated as new props come in. + if (props.defaultChecked == null) { + node.removeAttribute('checked'); + } else { + node.defaultChecked = !!props.defaultChecked; + } + } else { + // When syncing the checked attribute, it only changes when it needs + // to be removed, such as transitioning from a checkbox into a text input + if (props.checked == null && props.defaultChecked != null) { + node.defaultChecked = !!props.defaultChecked; + } + } +} + +function postMountWrapper(element, props, isHydrating) { + var node = element; + + // Do not assign value if it is already set. This prevents user text input + // from being lost during SSR hydration. + if (props.hasOwnProperty('value') || props.hasOwnProperty('defaultValue')) { + var type = props.type; + var isButton = type === 'submit' || type === 'reset'; + + // Avoid setting value attribute on submit/reset inputs as it overrides the + // default value provided by the browser. See: #12872 + if (isButton && (props.value === undefined || props.value === null)) { + return; + } + + var _initialValue = toString(node._wrapperState.initialValue); + + // Do not assign value if it is already set. This prevents user text input + // from being lost during SSR hydration. + if (!isHydrating) { + if (disableInputAttributeSyncing) { + var value = getToStringValue(props.value); + + // When not syncing the value attribute, the value property points + // directly to the React prop. Only assign it if it exists. + if (value != null) { + // Always assign on buttons so that it is possible to assign an + // empty string to clear button text. + // + // Otherwise, do not re-assign the value property if is empty. This + // potentially avoids a DOM write and prevents Firefox (~60.0.1) from + // prematurely marking required inputs as invalid. Equality is compared + // to the current value in case the browser provided value is not an + // empty string. + if (isButton || value !== node.value) { + node.value = toString(value); + } + } + } else { + // When syncing the value attribute, the value property should use + // the wrapperState._initialValue property. This uses: + // + // 1. The value React property when present + // 2. The defaultValue React property when present + // 3. An empty string + if (_initialValue !== node.value) { + node.value = _initialValue; + } + } + } + + if (disableInputAttributeSyncing) { + // When not syncing the value attribute, assign the value attribute + // directly from the defaultValue React property (when present) + var defaultValue = getToStringValue(props.defaultValue); + if (defaultValue != null) { + node.defaultValue = toString(defaultValue); + } + } else { + // Otherwise, the value attribute is synchronized to the property, + // so we assign defaultValue to the same thing as the value property + // assignment step above. + node.defaultValue = _initialValue; + } + } + + // Normally, we'd just do `node.checked = node.checked` upon initial mount, less this bug + // this is needed to work around a chrome bug where setting defaultChecked + // will sometimes influence the value of checked (even after detachment). + // Reference: https://bugs.chromium.org/p/chromium/issues/detail?id=608416 + // We need to temporarily unset name to avoid disrupting radio button groups. + var name = node.name; + if (name !== '') { + node.name = ''; + } + + if (disableInputAttributeSyncing) { + // When not syncing the checked attribute, the checked property + // never gets assigned. It must be manually set. We don't want + // to do this when hydrating so that existing user input isn't + // modified + if (!isHydrating) { + updateChecked(element, props); + } + + // Only assign the checked attribute if it is defined. This saves + // a DOM write when controlling the checked attribute isn't needed + // (text inputs, submit/reset) + if (props.hasOwnProperty('defaultChecked')) { + node.defaultChecked = !node.defaultChecked; + node.defaultChecked = !!props.defaultChecked; + } + } else { + // When syncing the checked attribute, both the checked property and + // attribute are assigned at the same time using defaultChecked. This uses: + // + // 1. The checked React property when present + // 2. The defaultChecked React property when present + // 3. Otherwise, false + node.defaultChecked = !node.defaultChecked; + node.defaultChecked = !!node._wrapperState.initialChecked; + } + + if (name !== '') { + node.name = name; + } +} + +function restoreControlledState(element, props) { + var node = element; + updateWrapper(node, props); + updateNamedCousins(node, props); +} + +function updateNamedCousins(rootNode, props) { + var name = props.name; + if (props.type === 'radio' && name != null) { + var queryRoot = rootNode; + + while (queryRoot.parentNode) { + queryRoot = queryRoot.parentNode; + } + + // If `rootNode.form` was non-null, then we could try `form.elements`, + // but that sometimes behaves strangely in IE8. We could also try using + // `form.getElementsByName`, but that will only return direct children + // and won't include inputs that use the HTML5 `form=` attribute. Since + // the input might not even be in a form. It might not even be in the + // document. Let's just use the local `querySelectorAll` to ensure we don't + // miss anything. + var group = queryRoot.querySelectorAll('input[name=' + JSON.stringify('' + name) + '][type="radio"]'); + + for (var i = 0; i < group.length; i++) { + var otherNode = group[i]; + if (otherNode === rootNode || otherNode.form !== rootNode.form) { + continue; + } + // This will throw if radio buttons rendered by different copies of React + // and the same name are rendered into the same form (same as #1939). + // That's probably okay; we don't support it just as we don't support + // mixing React radio buttons with non-React ones. + var otherProps = getFiberCurrentPropsFromNode$1(otherNode); + !otherProps ? reactProdInvariant('90') : void 0; + + // We need update the tracked value on the named cousin since the value + // was changed but the input saw no event or value set + updateValueIfChanged(otherNode); + + // If this is a controlled radio button group, forcing the input that + // was previously checked to update will cause it to be come re-checked + // as appropriate. + updateWrapper(otherNode, otherProps); + } + } +} + +// In Chrome, assigning defaultValue to certain input types triggers input validation. +// For number inputs, the display value loses trailing decimal points. For email inputs, +// Chrome raises "The specified value is not a valid email address". +// +// Here we check to see if the defaultValue has actually changed, avoiding these problems +// when the user is inputting text +// +// https://github.com/facebook/react/issues/7253 +function setDefaultValue(node, type, value) { + if ( + // Focused number inputs synchronize on blur. See ChangeEventPlugin.js + type !== 'number' || node.ownerDocument.activeElement !== node) { + if (value == null) { + node.defaultValue = toString(node._wrapperState.initialValue); + } else if (node.defaultValue !== toString(value)) { + node.defaultValue = toString(value); + } + } +} + +var eventTypes$1 = { + change: { + phasedRegistrationNames: { + bubbled: 'onChange', + captured: 'onChangeCapture' + }, + dependencies: [TOP_BLUR, TOP_CHANGE, TOP_CLICK, TOP_FOCUS, TOP_INPUT, TOP_KEY_DOWN, TOP_KEY_UP, TOP_SELECTION_CHANGE] + } +}; + +function createAndAccumulateChangeEvent(inst, nativeEvent, target) { + var event = SyntheticEvent.getPooled(eventTypes$1.change, inst, nativeEvent, target); + event.type = 'change'; + // Flag this event loop as needing state restore. + enqueueStateRestore(target); + accumulateTwoPhaseDispatches(event); + return event; +} +/** + * For IE shims + */ +var activeElement = null; +var activeElementInst = null; + +/** + * SECTION: handle `change` event + */ +function shouldUseChangeEvent(elem) { + var nodeName = elem.nodeName && elem.nodeName.toLowerCase(); + return nodeName === 'select' || nodeName === 'input' && elem.type === 'file'; +} + +function manualDispatchChangeEvent(nativeEvent) { + var event = createAndAccumulateChangeEvent(activeElementInst, nativeEvent, getEventTarget(nativeEvent)); + + // If change and propertychange bubbled, we'd just bind to it like all the + // other events and have it go through ReactBrowserEventEmitter. Since it + // doesn't, we manually listen for the events and so we have to enqueue and + // process the abstract event manually. + // + // Batching is necessary here in order to ensure that all event handlers run + // before the next rerender (including event handlers attached to ancestor + // elements instead of directly on the input). Without this, controlled + // components don't work properly in conjunction with event bubbling because + // the component is rerendered and the value reverted before all the event + // handlers can run. See https://github.com/facebook/react/issues/708. + batchedUpdates(runEventInBatch, event); +} + +function runEventInBatch(event) { + runEventsInBatch(event); +} + +function getInstIfValueChanged(targetInst) { + var targetNode = getNodeFromInstance$1(targetInst); + if (updateValueIfChanged(targetNode)) { + return targetInst; + } +} + +function getTargetInstForChangeEvent(topLevelType, targetInst) { + if (topLevelType === TOP_CHANGE) { + return targetInst; + } +} + +/** + * SECTION: handle `input` event + */ +var isInputEventSupported = false; +if (canUseDOM) { + // IE9 claims to support the input event but fails to trigger it when + // deleting text, so we ignore its input events. + isInputEventSupported = isEventSupported('input') && (!document.documentMode || document.documentMode > 9); +} + +/** + * (For IE <=9) Starts tracking propertychange events on the passed-in element + * and override the value property so that we can distinguish user events from + * value changes in JS. + */ +function startWatchingForValueChange(target, targetInst) { + activeElement = target; + activeElementInst = targetInst; + activeElement.attachEvent('onpropertychange', handlePropertyChange); +} + +/** + * (For IE <=9) Removes the event listeners from the currently-tracked element, + * if any exists. + */ +function stopWatchingForValueChange() { + if (!activeElement) { + return; + } + activeElement.detachEvent('onpropertychange', handlePropertyChange); + activeElement = null; + activeElementInst = null; +} + +/** + * (For IE <=9) Handles a propertychange event, sending a `change` event if + * the value of the active element has changed. + */ +function handlePropertyChange(nativeEvent) { + if (nativeEvent.propertyName !== 'value') { + return; + } + if (getInstIfValueChanged(activeElementInst)) { + manualDispatchChangeEvent(nativeEvent); + } +} + +function handleEventsForInputEventPolyfill(topLevelType, target, targetInst) { + if (topLevelType === TOP_FOCUS) { + // In IE9, propertychange fires for most input events but is buggy and + // doesn't fire when text is deleted, but conveniently, selectionchange + // appears to fire in all of the remaining cases so we catch those and + // forward the event if the value has changed + // In either case, we don't want to call the event handler if the value + // is changed from JS so we redefine a setter for `.value` that updates + // our activeElementValue variable, allowing us to ignore those changes + // + // stopWatching() should be a noop here but we call it just in case we + // missed a blur event somehow. + stopWatchingForValueChange(); + startWatchingForValueChange(target, targetInst); + } else if (topLevelType === TOP_BLUR) { + stopWatchingForValueChange(); + } +} + +// For IE8 and IE9. +function getTargetInstForInputEventPolyfill(topLevelType, targetInst) { + if (topLevelType === TOP_SELECTION_CHANGE || topLevelType === TOP_KEY_UP || topLevelType === TOP_KEY_DOWN) { + // On the selectionchange event, the target is just document which isn't + // helpful for us so just check activeElement instead. + // + // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire + // propertychange on the first input event after setting `value` from a + // script and fires only keydown, keypress, keyup. Catching keyup usually + // gets it and catching keydown lets us fire an event for the first + // keystroke if user does a key repeat (it'll be a little delayed: right + // before the second keystroke). Other input methods (e.g., paste) seem to + // fire selectionchange normally. + return getInstIfValueChanged(activeElementInst); + } +} + +/** + * SECTION: handle `click` event + */ +function shouldUseClickEvent(elem) { + // Use the `click` event to detect changes to checkbox and radio inputs. + // This approach works across all browsers, whereas `change` does not fire + // until `blur` in IE8. + var nodeName = elem.nodeName; + return nodeName && nodeName.toLowerCase() === 'input' && (elem.type === 'checkbox' || elem.type === 'radio'); +} + +function getTargetInstForClickEvent(topLevelType, targetInst) { + if (topLevelType === TOP_CLICK) { + return getInstIfValueChanged(targetInst); + } +} + +function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) { + if (topLevelType === TOP_INPUT || topLevelType === TOP_CHANGE) { + return getInstIfValueChanged(targetInst); + } +} + +function handleControlledInputBlur(node) { + var state = node._wrapperState; + + if (!state || !state.controlled || node.type !== 'number') { + return; + } + + if (!disableInputAttributeSyncing) { + // If controlled, assign the value attribute to the current value on blur + setDefaultValue(node, 'number', node.value); + } +} + +/** + * This plugin creates an `onChange` event that normalizes change events + * across form elements. This event fires at a time when it's possible to + * change the element's value without seeing a flicker. + * + * Supported elements are: + * - input (see `isTextInputElement`) + * - textarea + * - select + */ +var ChangeEventPlugin = { + eventTypes: eventTypes$1, + + _isInputEventSupported: isInputEventSupported, + + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window; + + var getTargetInstFunc = void 0, + handleEventFunc = void 0; + if (shouldUseChangeEvent(targetNode)) { + getTargetInstFunc = getTargetInstForChangeEvent; + } else if (isTextInputElement(targetNode)) { + if (isInputEventSupported) { + getTargetInstFunc = getTargetInstForInputOrChangeEvent; + } else { + getTargetInstFunc = getTargetInstForInputEventPolyfill; + handleEventFunc = handleEventsForInputEventPolyfill; + } + } else if (shouldUseClickEvent(targetNode)) { + getTargetInstFunc = getTargetInstForClickEvent; + } + + if (getTargetInstFunc) { + var inst = getTargetInstFunc(topLevelType, targetInst); + if (inst) { + var event = createAndAccumulateChangeEvent(inst, nativeEvent, nativeEventTarget); + return event; + } + } + + if (handleEventFunc) { + handleEventFunc(topLevelType, targetNode, targetInst); + } + + // When blurring, set the value attribute for number inputs + if (topLevelType === TOP_BLUR) { + handleControlledInputBlur(targetNode); + } + } +}; + +/** + * Module that is injectable into `EventPluginHub`, that specifies a + * deterministic ordering of `EventPlugin`s. A convenient way to reason about + * plugins, without having to package every one of them. This is better than + * having plugins be ordered in the same order that they are injected because + * that ordering would be influenced by the packaging order. + * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that + * preventing default on events is convenient in `SimpleEventPlugin` handlers. + */ +var DOMEventPluginOrder = ['ResponderEventPlugin', 'SimpleEventPlugin', 'EnterLeaveEventPlugin', 'ChangeEventPlugin', 'SelectEventPlugin', 'BeforeInputEventPlugin']; + +var SyntheticUIEvent = SyntheticEvent.extend({ + view: null, + detail: null +}); + +var modifierKeyToProp = { + Alt: 'altKey', + Control: 'ctrlKey', + Meta: 'metaKey', + Shift: 'shiftKey' +}; + +// Older browsers (Safari <= 10, iOS Safari <= 10.2) do not support +// getModifierState. If getModifierState is not supported, we map it to a set of +// modifier keys exposed by the event. In this case, Lock-keys are not supported. +/** + * Translation from modifier key to the associated property in the event. + * @see http://www.w3.org/TR/DOM-Level-3-Events/#keys-Modifiers + */ + +function modifierStateGetter(keyArg) { + var syntheticEvent = this; + var nativeEvent = syntheticEvent.nativeEvent; + if (nativeEvent.getModifierState) { + return nativeEvent.getModifierState(keyArg); + } + var keyProp = modifierKeyToProp[keyArg]; + return keyProp ? !!nativeEvent[keyProp] : false; +} + +function getEventModifierState(nativeEvent) { + return modifierStateGetter; +} + +var previousScreenX = 0; +var previousScreenY = 0; +// Use flags to signal movementX/Y has already been set +var isMovementXSet = false; +var isMovementYSet = false; + +/** + * @interface MouseEvent + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var SyntheticMouseEvent = SyntheticUIEvent.extend({ + screenX: null, + screenY: null, + clientX: null, + clientY: null, + pageX: null, + pageY: null, + ctrlKey: null, + shiftKey: null, + altKey: null, + metaKey: null, + getModifierState: getEventModifierState, + button: null, + buttons: null, + relatedTarget: function (event) { + return event.relatedTarget || (event.fromElement === event.srcElement ? event.toElement : event.fromElement); + }, + movementX: function (event) { + if ('movementX' in event) { + return event.movementX; + } + + var screenX = previousScreenX; + previousScreenX = event.screenX; + + if (!isMovementXSet) { + isMovementXSet = true; + return 0; + } + + return event.type === 'mousemove' ? event.screenX - screenX : 0; + }, + movementY: function (event) { + if ('movementY' in event) { + return event.movementY; + } + + var screenY = previousScreenY; + previousScreenY = event.screenY; + + if (!isMovementYSet) { + isMovementYSet = true; + return 0; + } + + return event.type === 'mousemove' ? event.screenY - screenY : 0; + } +}); + +/** + * @interface PointerEvent + * @see http://www.w3.org/TR/pointerevents/ + */ +var SyntheticPointerEvent = SyntheticMouseEvent.extend({ + pointerId: null, + width: null, + height: null, + pressure: null, + tangentialPressure: null, + tiltX: null, + tiltY: null, + twist: null, + pointerType: null, + isPrimary: null +}); + +var eventTypes$2 = { + mouseEnter: { + registrationName: 'onMouseEnter', + dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER] + }, + mouseLeave: { + registrationName: 'onMouseLeave', + dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER] + }, + pointerEnter: { + registrationName: 'onPointerEnter', + dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER] + }, + pointerLeave: { + registrationName: 'onPointerLeave', + dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER] + } +}; + +var EnterLeaveEventPlugin = { + eventTypes: eventTypes$2, + + /** + * For almost every interaction we care about, there will be both a top-level + * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that + * we do not extract duplicate events. However, moving the mouse into the + * browser from outside will not fire a `mouseout` event. In this case, we use + * the `mouseover` top-level event. + */ + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var isOverEvent = topLevelType === TOP_MOUSE_OVER || topLevelType === TOP_POINTER_OVER; + var isOutEvent = topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_POINTER_OUT; + + if (isOverEvent && (nativeEvent.relatedTarget || nativeEvent.fromElement)) { + return null; + } + + if (!isOutEvent && !isOverEvent) { + // Must not be a mouse or pointer in or out - ignoring. + return null; + } + + var win = void 0; + if (nativeEventTarget.window === nativeEventTarget) { + // `nativeEventTarget` is probably a window object. + win = nativeEventTarget; + } else { + // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8. + var doc = nativeEventTarget.ownerDocument; + if (doc) { + win = doc.defaultView || doc.parentWindow; + } else { + win = window; + } + } + + var from = void 0; + var to = void 0; + if (isOutEvent) { + from = targetInst; + var related = nativeEvent.relatedTarget || nativeEvent.toElement; + to = related ? getClosestInstanceFromNode(related) : null; + } else { + // Moving to a node from outside the window. + from = null; + to = targetInst; + } + + if (from === to) { + // Nothing pertains to our managed components. + return null; + } + + var eventInterface = void 0, + leaveEventType = void 0, + enterEventType = void 0, + eventTypePrefix = void 0; + + if (topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_MOUSE_OVER) { + eventInterface = SyntheticMouseEvent; + leaveEventType = eventTypes$2.mouseLeave; + enterEventType = eventTypes$2.mouseEnter; + eventTypePrefix = 'mouse'; + } else if (topLevelType === TOP_POINTER_OUT || topLevelType === TOP_POINTER_OVER) { + eventInterface = SyntheticPointerEvent; + leaveEventType = eventTypes$2.pointerLeave; + enterEventType = eventTypes$2.pointerEnter; + eventTypePrefix = 'pointer'; + } + + var fromNode = from == null ? win : getNodeFromInstance$1(from); + var toNode = to == null ? win : getNodeFromInstance$1(to); + + var leave = eventInterface.getPooled(leaveEventType, from, nativeEvent, nativeEventTarget); + leave.type = eventTypePrefix + 'leave'; + leave.target = fromNode; + leave.relatedTarget = toNode; + + var enter = eventInterface.getPooled(enterEventType, to, nativeEvent, nativeEventTarget); + enter.type = eventTypePrefix + 'enter'; + enter.target = toNode; + enter.relatedTarget = fromNode; + + accumulateEnterLeaveDispatches(leave, enter, from, to); + + return [leave, enter]; + } +}; + +/** + * inlined Object.is polyfill to avoid requiring consumers ship their own + * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is + */ +function is(x, y) { + return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare + ; +} + +var hasOwnProperty$1 = Object.prototype.hasOwnProperty; + +/** + * Performs equality by iterating through keys on an object and returning false + * when any key has values which are not strictly equal between the arguments. + * Returns true when the values of all keys are strictly equal. + */ +function shallowEqual(objA, objB) { + if (is(objA, objB)) { + return true; + } + + if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) { + return false; + } + + var keysA = Object.keys(objA); + var keysB = Object.keys(objB); + + if (keysA.length !== keysB.length) { + return false; + } + + // Test for A's keys different from B. + for (var i = 0; i < keysA.length; i++) { + if (!hasOwnProperty$1.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) { + return false; + } + } + + return true; +} + +/** + * `ReactInstanceMap` maintains a mapping from a public facing stateful + * instance (key) and the internal representation (value). This allows public + * methods to accept the user facing instance as an argument and map them back + * to internal methods. + * + * Note that this module is currently shared and assumed to be stateless. + * If this becomes an actual Map, that will break. + */ + +/** + * This API should be called `delete` but we'd have to make sure to always + * transform these to strings for IE support. When this transform is fully + * supported we can rename it. + */ + + +function get(key) { + return key._reactInternalFiber; +} + +function has(key) { + return key._reactInternalFiber !== undefined; +} + +function set(key, value) { + key._reactInternalFiber = value; +} + +// Don't change these two values. They're used by React Dev Tools. +var NoEffect = /* */0; +var PerformedWork = /* */1; + +// You can change the rest (and add more). +var Placement = /* */2; +var Update = /* */4; +var PlacementAndUpdate = /* */6; +var Deletion = /* */8; +var ContentReset = /* */16; +var Callback = /* */32; +var DidCapture = /* */64; +var Ref = /* */128; +var Snapshot = /* */256; +var Passive = /* */512; + +// Passive & Update & Callback & Ref & Snapshot +var LifecycleEffectMask = /* */932; + +// Union of all host effects +var HostEffectMask = /* */1023; + +var Incomplete = /* */1024; +var ShouldCapture = /* */2048; + +var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner; + +var MOUNTING = 1; +var MOUNTED = 2; +var UNMOUNTED = 3; + +function isFiberMountedImpl(fiber) { + var node = fiber; + if (!fiber.alternate) { + // If there is no alternate, this might be a new tree that isn't inserted + // yet. If it is, then it will have a pending insertion effect on it. + if ((node.effectTag & Placement) !== NoEffect) { + return MOUNTING; + } + while (node.return) { + node = node.return; + if ((node.effectTag & Placement) !== NoEffect) { + return MOUNTING; + } + } + } else { + while (node.return) { + node = node.return; + } + } + if (node.tag === HostRoot) { + // TODO: Check if this was a nested HostRoot when used with + // renderContainerIntoSubtree. + return MOUNTED; + } + // If we didn't hit the root, that means that we're in an disconnected tree + // that has been unmounted. + return UNMOUNTED; +} + +function isFiberMounted(fiber) { + return isFiberMountedImpl(fiber) === MOUNTED; +} + +function isMounted(component) { + var fiber = get(component); + if (!fiber) { + return false; + } + return isFiberMountedImpl(fiber) === MOUNTED; +} + +function assertIsMounted(fiber) { + !(isFiberMountedImpl(fiber) === MOUNTED) ? reactProdInvariant('188') : void 0; +} + +function findCurrentFiberUsingSlowPath(fiber) { + var alternate = fiber.alternate; + if (!alternate) { + // If there is no alternate, then we only need to check if it is mounted. + var state = isFiberMountedImpl(fiber); + !(state !== UNMOUNTED) ? reactProdInvariant('188') : void 0; + if (state === MOUNTING) { + return null; + } + return fiber; + } + // If we have two possible branches, we'll walk backwards up to the root + // to see what path the root points to. On the way we may hit one of the + // special cases and we'll deal with them. + var a = fiber; + var b = alternate; + while (true) { + var parentA = a.return; + var parentB = parentA ? parentA.alternate : null; + if (!parentA || !parentB) { + // We're at the root. + break; + } + + // If both copies of the parent fiber point to the same child, we can + // assume that the child is current. This happens when we bailout on low + // priority: the bailed out fiber's child reuses the current child. + if (parentA.child === parentB.child) { + var child = parentA.child; + while (child) { + if (child === a) { + // We've determined that A is the current branch. + assertIsMounted(parentA); + return fiber; + } + if (child === b) { + // We've determined that B is the current branch. + assertIsMounted(parentA); + return alternate; + } + child = child.sibling; + } + // We should never have an alternate for any mounting node. So the only + // way this could possibly happen is if this was unmounted, if at all. + reactProdInvariant('188'); + } + + if (a.return !== b.return) { + // The return pointer of A and the return pointer of B point to different + // fibers. We assume that return pointers never criss-cross, so A must + // belong to the child set of A.return, and B must belong to the child + // set of B.return. + a = parentA; + b = parentB; + } else { + // The return pointers point to the same fiber. We'll have to use the + // default, slow path: scan the child sets of each parent alternate to see + // which child belongs to which set. + // + // Search parent A's child set + var didFindChild = false; + var _child = parentA.child; + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentA; + b = parentB; + break; + } + if (_child === b) { + didFindChild = true; + b = parentA; + a = parentB; + break; + } + _child = _child.sibling; + } + if (!didFindChild) { + // Search parent B's child set + _child = parentB.child; + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentB; + b = parentA; + break; + } + if (_child === b) { + didFindChild = true; + b = parentB; + a = parentA; + break; + } + _child = _child.sibling; + } + !didFindChild ? reactProdInvariant('189') : void 0; + } + } + + !(a.alternate === b) ? reactProdInvariant('190') : void 0; + } + // If the root is not a host container, we're in a disconnected tree. I.e. + // unmounted. + !(a.tag === HostRoot) ? reactProdInvariant('188') : void 0; + if (a.stateNode.current === a) { + // We've determined that A is the current branch. + return fiber; + } + // Otherwise B has to be current branch. + return alternate; +} + +function findCurrentHostFiber(parent) { + var currentParent = findCurrentFiberUsingSlowPath(parent); + if (!currentParent) { + return null; + } + + // Next we'll drill down this component to find the first HostComponent/Text. + var node = currentParent; + while (true) { + if (node.tag === HostComponent || node.tag === HostText) { + return node; + } else if (node.child) { + node.child.return = node; + node = node.child; + continue; + } + if (node === currentParent) { + return null; + } + while (!node.sibling) { + if (!node.return || node.return === currentParent) { + return null; + } + node = node.return; + } + node.sibling.return = node.return; + node = node.sibling; + } + // Flow needs the return null here, but ESLint complains about it. + // eslint-disable-next-line no-unreachable + return null; +} + +function addEventBubbleListener(element, eventType, listener) { + element.addEventListener(eventType, listener, false); +} + +function addEventCaptureListener(element, eventType, listener) { + element.addEventListener(eventType, listener, true); +} + +/** + * @interface Event + * @see http://www.w3.org/TR/css3-animations/#AnimationEvent-interface + * @see https://developer.mozilla.org/en-US/docs/Web/API/AnimationEvent + */ +var SyntheticAnimationEvent = SyntheticEvent.extend({ + animationName: null, + elapsedTime: null, + pseudoElement: null +}); + +/** + * @interface Event + * @see http://www.w3.org/TR/clipboard-apis/ + */ +var SyntheticClipboardEvent = SyntheticEvent.extend({ + clipboardData: function (event) { + return 'clipboardData' in event ? event.clipboardData : window.clipboardData; + } +}); + +/** + * @interface FocusEvent + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var SyntheticFocusEvent = SyntheticUIEvent.extend({ + relatedTarget: null +}); + +/** + * `charCode` represents the actual "character code" and is safe to use with + * `String.fromCharCode`. As such, only keys that correspond to printable + * characters produce a valid `charCode`, the only exception to this is Enter. + * The Tab-key is considered non-printable and does not have a `charCode`, + * presumably because it does not produce a tab-character in browsers. + * + * @param {object} nativeEvent Native browser event. + * @return {number} Normalized `charCode` property. + */ +function getEventCharCode(nativeEvent) { + var charCode = void 0; + var keyCode = nativeEvent.keyCode; + + if ('charCode' in nativeEvent) { + charCode = nativeEvent.charCode; + + // FF does not set `charCode` for the Enter-key, check against `keyCode`. + if (charCode === 0 && keyCode === 13) { + charCode = 13; + } + } else { + // IE8 does not implement `charCode`, but `keyCode` has the correct value. + charCode = keyCode; + } + + // IE and Edge (on Windows) and Chrome / Safari (on Windows and Linux) + // report Enter as charCode 10 when ctrl is pressed. + if (charCode === 10) { + charCode = 13; + } + + // Some non-printable keys are reported in `charCode`/`keyCode`, discard them. + // Must not discard the (non-)printable Enter-key. + if (charCode >= 32 || charCode === 13) { + return charCode; + } + + return 0; +} + +/** + * Normalization of deprecated HTML5 `key` values + * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names + */ +var normalizeKey = { + Esc: 'Escape', + Spacebar: ' ', + Left: 'ArrowLeft', + Up: 'ArrowUp', + Right: 'ArrowRight', + Down: 'ArrowDown', + Del: 'Delete', + Win: 'OS', + Menu: 'ContextMenu', + Apps: 'ContextMenu', + Scroll: 'ScrollLock', + MozPrintableKey: 'Unidentified' +}; + +/** + * Translation from legacy `keyCode` to HTML5 `key` + * Only special keys supported, all others depend on keyboard layout or browser + * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names + */ +var translateToKey = { + '8': 'Backspace', + '9': 'Tab', + '12': 'Clear', + '13': 'Enter', + '16': 'Shift', + '17': 'Control', + '18': 'Alt', + '19': 'Pause', + '20': 'CapsLock', + '27': 'Escape', + '32': ' ', + '33': 'PageUp', + '34': 'PageDown', + '35': 'End', + '36': 'Home', + '37': 'ArrowLeft', + '38': 'ArrowUp', + '39': 'ArrowRight', + '40': 'ArrowDown', + '45': 'Insert', + '46': 'Delete', + '112': 'F1', + '113': 'F2', + '114': 'F3', + '115': 'F4', + '116': 'F5', + '117': 'F6', + '118': 'F7', + '119': 'F8', + '120': 'F9', + '121': 'F10', + '122': 'F11', + '123': 'F12', + '144': 'NumLock', + '145': 'ScrollLock', + '224': 'Meta' +}; + +/** + * @param {object} nativeEvent Native browser event. + * @return {string} Normalized `key` property. + */ +function getEventKey(nativeEvent) { + if (nativeEvent.key) { + // Normalize inconsistent values reported by browsers due to + // implementations of a working draft specification. + + // FireFox implements `key` but returns `MozPrintableKey` for all + // printable characters (normalized to `Unidentified`), ignore it. + var key = normalizeKey[nativeEvent.key] || nativeEvent.key; + if (key !== 'Unidentified') { + return key; + } + } + + // Browser does not implement `key`, polyfill as much of it as we can. + if (nativeEvent.type === 'keypress') { + var charCode = getEventCharCode(nativeEvent); + + // The enter-key is technically both printable and non-printable and can + // thus be captured by `keypress`, no other non-printable key should. + return charCode === 13 ? 'Enter' : String.fromCharCode(charCode); + } + if (nativeEvent.type === 'keydown' || nativeEvent.type === 'keyup') { + // While user keyboard layout determines the actual meaning of each + // `keyCode` value, almost all function keys have a universal value. + return translateToKey[nativeEvent.keyCode] || 'Unidentified'; + } + return ''; +} + +/** + * @interface KeyboardEvent + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var SyntheticKeyboardEvent = SyntheticUIEvent.extend({ + key: getEventKey, + location: null, + ctrlKey: null, + shiftKey: null, + altKey: null, + metaKey: null, + repeat: null, + locale: null, + getModifierState: getEventModifierState, + // Legacy Interface + charCode: function (event) { + // `charCode` is the result of a KeyPress event and represents the value of + // the actual printable character. + + // KeyPress is deprecated, but its replacement is not yet final and not + // implemented in any major browser. Only KeyPress has charCode. + if (event.type === 'keypress') { + return getEventCharCode(event); + } + return 0; + }, + keyCode: function (event) { + // `keyCode` is the result of a KeyDown/Up event and represents the value of + // physical keyboard key. + + // The actual meaning of the value depends on the users' keyboard layout + // which cannot be detected. Assuming that it is a US keyboard layout + // provides a surprisingly accurate mapping for US and European users. + // Due to this, it is left to the user to implement at this time. + if (event.type === 'keydown' || event.type === 'keyup') { + return event.keyCode; + } + return 0; + }, + which: function (event) { + // `which` is an alias for either `keyCode` or `charCode` depending on the + // type of the event. + if (event.type === 'keypress') { + return getEventCharCode(event); + } + if (event.type === 'keydown' || event.type === 'keyup') { + return event.keyCode; + } + return 0; + } +}); + +/** + * @interface DragEvent + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var SyntheticDragEvent = SyntheticMouseEvent.extend({ + dataTransfer: null +}); + +/** + * @interface TouchEvent + * @see http://www.w3.org/TR/touch-events/ + */ +var SyntheticTouchEvent = SyntheticUIEvent.extend({ + touches: null, + targetTouches: null, + changedTouches: null, + altKey: null, + metaKey: null, + ctrlKey: null, + shiftKey: null, + getModifierState: getEventModifierState +}); + +/** + * @interface Event + * @see http://www.w3.org/TR/2009/WD-css3-transitions-20090320/#transition-events- + * @see https://developer.mozilla.org/en-US/docs/Web/API/TransitionEvent + */ +var SyntheticTransitionEvent = SyntheticEvent.extend({ + propertyName: null, + elapsedTime: null, + pseudoElement: null +}); + +/** + * @interface WheelEvent + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ +var SyntheticWheelEvent = SyntheticMouseEvent.extend({ + deltaX: function (event) { + return 'deltaX' in event ? event.deltaX : // Fallback to `wheelDeltaX` for Webkit and normalize (right is positive). + 'wheelDeltaX' in event ? -event.wheelDeltaX : 0; + }, + deltaY: function (event) { + return 'deltaY' in event ? event.deltaY : // Fallback to `wheelDeltaY` for Webkit and normalize (down is positive). + 'wheelDeltaY' in event ? -event.wheelDeltaY : // Fallback to `wheelDelta` for IE<9 and normalize (down is positive). + 'wheelDelta' in event ? -event.wheelDelta : 0; + }, + + deltaZ: null, + + // Browsers without "deltaMode" is reporting in raw wheel delta where one + // notch on the scroll is always +/- 120, roughly equivalent to pixels. + // A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or + // ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size. + deltaMode: null +}); + +/** + * Turns + * ['abort', ...] + * into + * eventTypes = { + * 'abort': { + * phasedRegistrationNames: { + * bubbled: 'onAbort', + * captured: 'onAbortCapture', + * }, + * dependencies: [TOP_ABORT], + * }, + * ... + * }; + * topLevelEventsToDispatchConfig = new Map([ + * [TOP_ABORT, { sameConfig }], + * ]); + */ + +var interactiveEventTypeNames = [[TOP_BLUR, 'blur'], [TOP_CANCEL, 'cancel'], [TOP_CLICK, 'click'], [TOP_CLOSE, 'close'], [TOP_CONTEXT_MENU, 'contextMenu'], [TOP_COPY, 'copy'], [TOP_CUT, 'cut'], [TOP_AUX_CLICK, 'auxClick'], [TOP_DOUBLE_CLICK, 'doubleClick'], [TOP_DRAG_END, 'dragEnd'], [TOP_DRAG_START, 'dragStart'], [TOP_DROP, 'drop'], [TOP_FOCUS, 'focus'], [TOP_INPUT, 'input'], [TOP_INVALID, 'invalid'], [TOP_KEY_DOWN, 'keyDown'], [TOP_KEY_PRESS, 'keyPress'], [TOP_KEY_UP, 'keyUp'], [TOP_MOUSE_DOWN, 'mouseDown'], [TOP_MOUSE_UP, 'mouseUp'], [TOP_PASTE, 'paste'], [TOP_PAUSE, 'pause'], [TOP_PLAY, 'play'], [TOP_POINTER_CANCEL, 'pointerCancel'], [TOP_POINTER_DOWN, 'pointerDown'], [TOP_POINTER_UP, 'pointerUp'], [TOP_RATE_CHANGE, 'rateChange'], [TOP_RESET, 'reset'], [TOP_SEEKED, 'seeked'], [TOP_SUBMIT, 'submit'], [TOP_TOUCH_CANCEL, 'touchCancel'], [TOP_TOUCH_END, 'touchEnd'], [TOP_TOUCH_START, 'touchStart'], [TOP_VOLUME_CHANGE, 'volumeChange']]; +var nonInteractiveEventTypeNames = [[TOP_ABORT, 'abort'], [TOP_ANIMATION_END, 'animationEnd'], [TOP_ANIMATION_ITERATION, 'animationIteration'], [TOP_ANIMATION_START, 'animationStart'], [TOP_CAN_PLAY, 'canPlay'], [TOP_CAN_PLAY_THROUGH, 'canPlayThrough'], [TOP_DRAG, 'drag'], [TOP_DRAG_ENTER, 'dragEnter'], [TOP_DRAG_EXIT, 'dragExit'], [TOP_DRAG_LEAVE, 'dragLeave'], [TOP_DRAG_OVER, 'dragOver'], [TOP_DURATION_CHANGE, 'durationChange'], [TOP_EMPTIED, 'emptied'], [TOP_ENCRYPTED, 'encrypted'], [TOP_ENDED, 'ended'], [TOP_ERROR, 'error'], [TOP_GOT_POINTER_CAPTURE, 'gotPointerCapture'], [TOP_LOAD, 'load'], [TOP_LOADED_DATA, 'loadedData'], [TOP_LOADED_METADATA, 'loadedMetadata'], [TOP_LOAD_START, 'loadStart'], [TOP_LOST_POINTER_CAPTURE, 'lostPointerCapture'], [TOP_MOUSE_MOVE, 'mouseMove'], [TOP_MOUSE_OUT, 'mouseOut'], [TOP_MOUSE_OVER, 'mouseOver'], [TOP_PLAYING, 'playing'], [TOP_POINTER_MOVE, 'pointerMove'], [TOP_POINTER_OUT, 'pointerOut'], [TOP_POINTER_OVER, 'pointerOver'], [TOP_PROGRESS, 'progress'], [TOP_SCROLL, 'scroll'], [TOP_SEEKING, 'seeking'], [TOP_STALLED, 'stalled'], [TOP_SUSPEND, 'suspend'], [TOP_TIME_UPDATE, 'timeUpdate'], [TOP_TOGGLE, 'toggle'], [TOP_TOUCH_MOVE, 'touchMove'], [TOP_TRANSITION_END, 'transitionEnd'], [TOP_WAITING, 'waiting'], [TOP_WHEEL, 'wheel']]; + +var eventTypes$4 = {}; +var topLevelEventsToDispatchConfig = {}; + +function addEventTypeNameToConfig(_ref, isInteractive) { + var topEvent = _ref[0], + event = _ref[1]; + + var capitalizedEvent = event[0].toUpperCase() + event.slice(1); + var onEvent = 'on' + capitalizedEvent; + + var type = { + phasedRegistrationNames: { + bubbled: onEvent, + captured: onEvent + 'Capture' + }, + dependencies: [topEvent], + isInteractive: isInteractive + }; + eventTypes$4[event] = type; + topLevelEventsToDispatchConfig[topEvent] = type; +} + +interactiveEventTypeNames.forEach(function (eventTuple) { + addEventTypeNameToConfig(eventTuple, true); +}); +nonInteractiveEventTypeNames.forEach(function (eventTuple) { + addEventTypeNameToConfig(eventTuple, false); +}); + +var SimpleEventPlugin = { + eventTypes: eventTypes$4, + + isInteractiveTopLevelEventType: function (topLevelType) { + var config = topLevelEventsToDispatchConfig[topLevelType]; + return config !== undefined && config.isInteractive === true; + }, + + + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var dispatchConfig = topLevelEventsToDispatchConfig[topLevelType]; + if (!dispatchConfig) { + return null; + } + var EventConstructor = void 0; + switch (topLevelType) { + case TOP_KEY_PRESS: + // Firefox creates a keypress event for function keys too. This removes + // the unwanted keypress events. Enter is however both printable and + // non-printable. One would expect Tab to be as well (but it isn't). + if (getEventCharCode(nativeEvent) === 0) { + return null; + } + /* falls through */ + case TOP_KEY_DOWN: + case TOP_KEY_UP: + EventConstructor = SyntheticKeyboardEvent; + break; + case TOP_BLUR: + case TOP_FOCUS: + EventConstructor = SyntheticFocusEvent; + break; + case TOP_CLICK: + // Firefox creates a click event on right mouse clicks. This removes the + // unwanted click events. + if (nativeEvent.button === 2) { + return null; + } + /* falls through */ + case TOP_AUX_CLICK: + case TOP_DOUBLE_CLICK: + case TOP_MOUSE_DOWN: + case TOP_MOUSE_MOVE: + case TOP_MOUSE_UP: + // TODO: Disabled elements should not respond to mouse events + /* falls through */ + case TOP_MOUSE_OUT: + case TOP_MOUSE_OVER: + case TOP_CONTEXT_MENU: + EventConstructor = SyntheticMouseEvent; + break; + case TOP_DRAG: + case TOP_DRAG_END: + case TOP_DRAG_ENTER: + case TOP_DRAG_EXIT: + case TOP_DRAG_LEAVE: + case TOP_DRAG_OVER: + case TOP_DRAG_START: + case TOP_DROP: + EventConstructor = SyntheticDragEvent; + break; + case TOP_TOUCH_CANCEL: + case TOP_TOUCH_END: + case TOP_TOUCH_MOVE: + case TOP_TOUCH_START: + EventConstructor = SyntheticTouchEvent; + break; + case TOP_ANIMATION_END: + case TOP_ANIMATION_ITERATION: + case TOP_ANIMATION_START: + EventConstructor = SyntheticAnimationEvent; + break; + case TOP_TRANSITION_END: + EventConstructor = SyntheticTransitionEvent; + break; + case TOP_SCROLL: + EventConstructor = SyntheticUIEvent; + break; + case TOP_WHEEL: + EventConstructor = SyntheticWheelEvent; + break; + case TOP_COPY: + case TOP_CUT: + case TOP_PASTE: + EventConstructor = SyntheticClipboardEvent; + break; + case TOP_GOT_POINTER_CAPTURE: + case TOP_LOST_POINTER_CAPTURE: + case TOP_POINTER_CANCEL: + case TOP_POINTER_DOWN: + case TOP_POINTER_MOVE: + case TOP_POINTER_OUT: + case TOP_POINTER_OVER: + case TOP_POINTER_UP: + EventConstructor = SyntheticPointerEvent; + break; + default: + + // HTML Events + // @see http://www.w3.org/TR/html5/index.html#events-0 + EventConstructor = SyntheticEvent; + break; + } + var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget); + accumulateTwoPhaseDispatches(event); + return event; + } +}; + +var isInteractiveTopLevelEventType = SimpleEventPlugin.isInteractiveTopLevelEventType; + + +var CALLBACK_BOOKKEEPING_POOL_SIZE = 10; +var callbackBookkeepingPool = []; + +/** + * Find the deepest React component completely containing the root of the + * passed-in instance (for use when entire React trees are nested within each + * other). If React trees are not nested, returns null. + */ +function findRootContainerNode(inst) { + // TODO: It may be a good idea to cache this to prevent unnecessary DOM + // traversal, but caching is difficult to do correctly without using a + // mutation observer to listen for all DOM changes. + while (inst.return) { + inst = inst.return; + } + if (inst.tag !== HostRoot) { + // This can happen if we're in a detached tree. + return null; + } + return inst.stateNode.containerInfo; +} + +// Used to store ancestor hierarchy in top level callback +function getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst) { + if (callbackBookkeepingPool.length) { + var instance = callbackBookkeepingPool.pop(); + instance.topLevelType = topLevelType; + instance.nativeEvent = nativeEvent; + instance.targetInst = targetInst; + return instance; + } + return { + topLevelType: topLevelType, + nativeEvent: nativeEvent, + targetInst: targetInst, + ancestors: [] + }; +} + +function releaseTopLevelCallbackBookKeeping(instance) { + instance.topLevelType = null; + instance.nativeEvent = null; + instance.targetInst = null; + instance.ancestors.length = 0; + if (callbackBookkeepingPool.length < CALLBACK_BOOKKEEPING_POOL_SIZE) { + callbackBookkeepingPool.push(instance); + } +} + +function handleTopLevel(bookKeeping) { + var targetInst = bookKeeping.targetInst; + + // Loop through the hierarchy, in case there's any nested components. + // It's important that we build the array of ancestors before calling any + // event handlers, because event handlers can modify the DOM, leading to + // inconsistencies with ReactMount's node cache. See #1105. + var ancestor = targetInst; + do { + if (!ancestor) { + bookKeeping.ancestors.push(ancestor); + break; + } + var root = findRootContainerNode(ancestor); + if (!root) { + break; + } + bookKeeping.ancestors.push(ancestor); + ancestor = getClosestInstanceFromNode(root); + } while (ancestor); + + for (var i = 0; i < bookKeeping.ancestors.length; i++) { + targetInst = bookKeeping.ancestors[i]; + runExtractedEventsInBatch(bookKeeping.topLevelType, targetInst, bookKeeping.nativeEvent, getEventTarget(bookKeeping.nativeEvent)); + } +} + +// TODO: can we stop exporting these? +var _enabled = true; + +function setEnabled(enabled) { + _enabled = !!enabled; +} + +function isEnabled() { + return _enabled; +} + +/** + * Traps top-level events by using event bubbling. + * + * @param {number} topLevelType Number from `TopLevelEventTypes`. + * @param {object} element Element on which to attach listener. + * @return {?object} An object with a remove function which will forcefully + * remove the listener. + * @internal + */ +function trapBubbledEvent(topLevelType, element) { + if (!element) { + return null; + } + var dispatch = isInteractiveTopLevelEventType(topLevelType) ? dispatchInteractiveEvent : dispatchEvent; + + addEventBubbleListener(element, getRawEventName(topLevelType), + // Check if interactive and wrap in interactiveUpdates + dispatch.bind(null, topLevelType)); +} + +/** + * Traps a top-level event by using event capturing. + * + * @param {number} topLevelType Number from `TopLevelEventTypes`. + * @param {object} element Element on which to attach listener. + * @return {?object} An object with a remove function which will forcefully + * remove the listener. + * @internal + */ +function trapCapturedEvent(topLevelType, element) { + if (!element) { + return null; + } + var dispatch = isInteractiveTopLevelEventType(topLevelType) ? dispatchInteractiveEvent : dispatchEvent; + + addEventCaptureListener(element, getRawEventName(topLevelType), + // Check if interactive and wrap in interactiveUpdates + dispatch.bind(null, topLevelType)); +} + +function dispatchInteractiveEvent(topLevelType, nativeEvent) { + interactiveUpdates(dispatchEvent, topLevelType, nativeEvent); +} + +function dispatchEvent(topLevelType, nativeEvent) { + if (!_enabled) { + return; + } + + var nativeEventTarget = getEventTarget(nativeEvent); + var targetInst = getClosestInstanceFromNode(nativeEventTarget); + if (targetInst !== null && typeof targetInst.tag === 'number' && !isFiberMounted(targetInst)) { + // If we get an event (ex: img onload) before committing that + // component's mount, ignore it for now (that is, treat it as if it was an + // event on a non-React tree). We might also consider queueing events and + // dispatching them after the mount. + targetInst = null; + } + + var bookKeeping = getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst); + + try { + // Event queue being processed in the same cycle allows + // `preventDefault`. + batchedUpdates(handleTopLevel, bookKeeping); + } finally { + releaseTopLevelCallbackBookKeeping(bookKeeping); + } +} + +/** + * Summary of `ReactBrowserEventEmitter` event handling: + * + * - Top-level delegation is used to trap most native browser events. This + * may only occur in the main thread and is the responsibility of + * ReactDOMEventListener, which is injected and can therefore support + * pluggable event sources. This is the only work that occurs in the main + * thread. + * + * - We normalize and de-duplicate events to account for browser quirks. This + * may be done in the worker thread. + * + * - Forward these native events (with the associated top-level type used to + * trap it) to `EventPluginHub`, which in turn will ask plugins if they want + * to extract any synthetic events. + * + * - The `EventPluginHub` will then process each event by annotating them with + * "dispatches", a sequence of listeners and IDs that care about that event. + * + * - The `EventPluginHub` then dispatches the events. + * + * Overview of React and the event system: + * + * +------------+ . + * | DOM | . + * +------------+ . + * | . + * v . + * +------------+ . + * | ReactEvent | . + * | Listener | . + * +------------+ . +-----------+ + * | . +--------+|SimpleEvent| + * | . | |Plugin | + * +-----|------+ . v +-----------+ + * | | | . +--------------+ +------------+ + * | +-----------.--->|EventPluginHub| | Event | + * | | . | | +-----------+ | Propagators| + * | ReactEvent | . | | |TapEvent | |------------| + * | Emitter | . | |<---+|Plugin | |other plugin| + * | | . | | +-----------+ | utilities | + * | +-----------.--->| | +------------+ + * | | | . +--------------+ + * +-----|------+ . ^ +-----------+ + * | . | |Enter/Leave| + * + . +-------+|Plugin | + * +-------------+ . +-----------+ + * | application | . + * |-------------| . + * | | . + * | | . + * +-------------+ . + * . + * React Core . General Purpose Event Plugin System + */ + +var alreadyListeningTo = {}; +var reactTopListenersCounter = 0; + +/** + * To ensure no conflicts with other potential React instances on the page + */ +var topListenersIDKey = '_reactListenersID' + ('' + Math.random()).slice(2); + +function getListeningForDocument(mountAt) { + // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty` + // directly. + if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) { + mountAt[topListenersIDKey] = reactTopListenersCounter++; + alreadyListeningTo[mountAt[topListenersIDKey]] = {}; + } + return alreadyListeningTo[mountAt[topListenersIDKey]]; +} + +/** + * We listen for bubbled touch events on the document object. + * + * Firefox v8.01 (and possibly others) exhibited strange behavior when + * mounting `onmousemove` events at some node that was not the document + * element. The symptoms were that if your mouse is not moving over something + * contained within that mount point (for example on the background) the + * top-level listeners for `onmousemove` won't be called. However, if you + * register the `mousemove` on the document object, then it will of course + * catch all `mousemove`s. This along with iOS quirks, justifies restricting + * top-level listeners to the document object only, at least for these + * movement types of events and possibly all events. + * + * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html + * + * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but + * they bubble to document. + * + * @param {string} registrationName Name of listener (e.g. `onClick`). + * @param {object} mountAt Container where to mount the listener + */ +function listenTo(registrationName, mountAt) { + var isListening = getListeningForDocument(mountAt); + var dependencies = registrationNameDependencies[registrationName]; + + for (var i = 0; i < dependencies.length; i++) { + var dependency = dependencies[i]; + if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) { + switch (dependency) { + case TOP_SCROLL: + trapCapturedEvent(TOP_SCROLL, mountAt); + break; + case TOP_FOCUS: + case TOP_BLUR: + trapCapturedEvent(TOP_FOCUS, mountAt); + trapCapturedEvent(TOP_BLUR, mountAt); + // We set the flag for a single dependency later in this function, + // but this ensures we mark both as attached rather than just one. + isListening[TOP_BLUR] = true; + isListening[TOP_FOCUS] = true; + break; + case TOP_CANCEL: + case TOP_CLOSE: + if (isEventSupported(getRawEventName(dependency))) { + trapCapturedEvent(dependency, mountAt); + } + break; + case TOP_INVALID: + case TOP_SUBMIT: + case TOP_RESET: + // We listen to them on the target DOM elements. + // Some of them bubble so we don't want them to fire twice. + break; + default: + // By default, listen on the top level to all non-media events. + // Media events don't bubble so adding the listener wouldn't do anything. + var isMediaEvent = mediaEventTypes.indexOf(dependency) !== -1; + if (!isMediaEvent) { + trapBubbledEvent(dependency, mountAt); + } + break; + } + isListening[dependency] = true; + } + } +} + +function isListeningToAllDependencies(registrationName, mountAt) { + var isListening = getListeningForDocument(mountAt); + var dependencies = registrationNameDependencies[registrationName]; + for (var i = 0; i < dependencies.length; i++) { + var dependency = dependencies[i]; + if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) { + return false; + } + } + return true; +} + +function getActiveElement(doc) { + doc = doc || (typeof document !== 'undefined' ? document : undefined); + if (typeof doc === 'undefined') { + return null; + } + try { + return doc.activeElement || doc.body; + } catch (e) { + return doc.body; + } +} + +/** + * Given any node return the first leaf node without children. + * + * @param {DOMElement|DOMTextNode} node + * @return {DOMElement|DOMTextNode} + */ +function getLeafNode(node) { + while (node && node.firstChild) { + node = node.firstChild; + } + return node; +} + +/** + * Get the next sibling within a container. This will walk up the + * DOM if a node's siblings have been exhausted. + * + * @param {DOMElement|DOMTextNode} node + * @return {?DOMElement|DOMTextNode} + */ +function getSiblingNode(node) { + while (node) { + if (node.nextSibling) { + return node.nextSibling; + } + node = node.parentNode; + } +} + +/** + * Get object describing the nodes which contain characters at offset. + * + * @param {DOMElement|DOMTextNode} root + * @param {number} offset + * @return {?object} + */ +function getNodeForCharacterOffset(root, offset) { + var node = getLeafNode(root); + var nodeStart = 0; + var nodeEnd = 0; + + while (node) { + if (node.nodeType === TEXT_NODE) { + nodeEnd = nodeStart + node.textContent.length; + + if (nodeStart <= offset && nodeEnd >= offset) { + return { + node: node, + offset: offset - nodeStart + }; + } + + nodeStart = nodeEnd; + } + + node = getLeafNode(getSiblingNode(node)); + } +} + +/** + * @param {DOMElement} outerNode + * @return {?object} + */ +function getOffsets(outerNode) { + var ownerDocument = outerNode.ownerDocument; + + var win = ownerDocument && ownerDocument.defaultView || window; + var selection = win.getSelection && win.getSelection(); + + if (!selection || selection.rangeCount === 0) { + return null; + } + + var anchorNode = selection.anchorNode, + anchorOffset = selection.anchorOffset, + focusNode = selection.focusNode, + focusOffset = selection.focusOffset; + + // In Firefox, anchorNode and focusNode can be "anonymous divs", e.g. the + // up/down buttons on an . Anonymous divs do not seem to + // expose properties, triggering a "Permission denied error" if any of its + // properties are accessed. The only seemingly possible way to avoid erroring + // is to access a property that typically works for non-anonymous divs and + // catch any error that may otherwise arise. See + // https://bugzilla.mozilla.org/show_bug.cgi?id=208427 + + try { + /* eslint-disable no-unused-expressions */ + anchorNode.nodeType; + focusNode.nodeType; + /* eslint-enable no-unused-expressions */ + } catch (e) { + return null; + } + + return getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset); +} + +/** + * Returns {start, end} where `start` is the character/codepoint index of + * (anchorNode, anchorOffset) within the textContent of `outerNode`, and + * `end` is the index of (focusNode, focusOffset). + * + * Returns null if you pass in garbage input but we should probably just crash. + * + * Exported only for testing. + */ +function getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset) { + var length = 0; + var start = -1; + var end = -1; + var indexWithinAnchor = 0; + var indexWithinFocus = 0; + var node = outerNode; + var parentNode = null; + + outer: while (true) { + var next = null; + + while (true) { + if (node === anchorNode && (anchorOffset === 0 || node.nodeType === TEXT_NODE)) { + start = length + anchorOffset; + } + if (node === focusNode && (focusOffset === 0 || node.nodeType === TEXT_NODE)) { + end = length + focusOffset; + } + + if (node.nodeType === TEXT_NODE) { + length += node.nodeValue.length; + } + + if ((next = node.firstChild) === null) { + break; + } + // Moving from `node` to its first child `next`. + parentNode = node; + node = next; + } + + while (true) { + if (node === outerNode) { + // If `outerNode` has children, this is always the second time visiting + // it. If it has no children, this is still the first loop, and the only + // valid selection is anchorNode and focusNode both equal to this node + // and both offsets 0, in which case we will have handled above. + break outer; + } + if (parentNode === anchorNode && ++indexWithinAnchor === anchorOffset) { + start = length; + } + if (parentNode === focusNode && ++indexWithinFocus === focusOffset) { + end = length; + } + if ((next = node.nextSibling) !== null) { + break; + } + node = parentNode; + parentNode = node.parentNode; + } + + // Moving from `node` to its next sibling `next`. + node = next; + } + + if (start === -1 || end === -1) { + // This should never happen. (Would happen if the anchor/focus nodes aren't + // actually inside the passed-in node.) + return null; + } + + return { + start: start, + end: end + }; +} + +/** + * In modern non-IE browsers, we can support both forward and backward + * selections. + * + * Note: IE10+ supports the Selection object, but it does not support + * the `extend` method, which means that even in modern IE, it's not possible + * to programmatically create a backward selection. Thus, for all IE + * versions, we use the old IE API to create our selections. + * + * @param {DOMElement|DOMTextNode} node + * @param {object} offsets + */ +function setOffsets(node, offsets) { + var doc = node.ownerDocument || document; + var win = doc && doc.defaultView || window; + + // Edge fails with "Object expected" in some scenarios. + // (For instance: TinyMCE editor used in a list component that supports pasting to add more, + // fails when pasting 100+ items) + if (!win.getSelection) { + return; + } + + var selection = win.getSelection(); + var length = node.textContent.length; + var start = Math.min(offsets.start, length); + var end = offsets.end === undefined ? start : Math.min(offsets.end, length); + + // IE 11 uses modern selection, but doesn't support the extend method. + // Flip backward selections, so we can set with a single range. + if (!selection.extend && start > end) { + var temp = end; + end = start; + start = temp; + } + + var startMarker = getNodeForCharacterOffset(node, start); + var endMarker = getNodeForCharacterOffset(node, end); + + if (startMarker && endMarker) { + if (selection.rangeCount === 1 && selection.anchorNode === startMarker.node && selection.anchorOffset === startMarker.offset && selection.focusNode === endMarker.node && selection.focusOffset === endMarker.offset) { + return; + } + var range = doc.createRange(); + range.setStart(startMarker.node, startMarker.offset); + selection.removeAllRanges(); + + if (start > end) { + selection.addRange(range); + selection.extend(endMarker.node, endMarker.offset); + } else { + range.setEnd(endMarker.node, endMarker.offset); + selection.addRange(range); + } + } +} + +function isTextNode(node) { + return node && node.nodeType === TEXT_NODE; +} + +function containsNode(outerNode, innerNode) { + if (!outerNode || !innerNode) { + return false; + } else if (outerNode === innerNode) { + return true; + } else if (isTextNode(outerNode)) { + return false; + } else if (isTextNode(innerNode)) { + return containsNode(outerNode, innerNode.parentNode); + } else if ('contains' in outerNode) { + return outerNode.contains(innerNode); + } else if (outerNode.compareDocumentPosition) { + return !!(outerNode.compareDocumentPosition(innerNode) & 16); + } else { + return false; + } +} + +function isInDocument(node) { + return node && node.ownerDocument && containsNode(node.ownerDocument.documentElement, node); +} + +function isSameOriginFrame(iframe) { + try { + // Accessing the contentDocument of a HTMLIframeElement can cause the browser + // to throw, e.g. if it has a cross-origin src attribute. + // Safari will show an error in the console when the access results in "Blocked a frame with origin". e.g: + // iframe.contentDocument.defaultView; + // A safety way is to access one of the cross origin properties: Window or Location + // Which might result in "SecurityError" DOM Exception and it is compatible to Safari. + // https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl + + return typeof iframe.contentWindow.location.href === 'string'; + } catch (err) { + return false; + } +} + +function getActiveElementDeep() { + var win = window; + var element = getActiveElement(); + while (element instanceof win.HTMLIFrameElement) { + if (isSameOriginFrame(element)) { + win = element.contentWindow; + } else { + return element; + } + element = getActiveElement(win.document); + } + return element; +} + +/** + * @ReactInputSelection: React input selection module. Based on Selection.js, + * but modified to be suitable for react and has a couple of bug fixes (doesn't + * assume buttons have range selections allowed). + * Input selection module for React. + */ + +/** + * @hasSelectionCapabilities: we get the element types that support selection + * from https://html.spec.whatwg.org/#do-not-apply, looking at `selectionStart` + * and `selectionEnd` rows. + */ +function hasSelectionCapabilities(elem) { + var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase(); + return nodeName && (nodeName === 'input' && (elem.type === 'text' || elem.type === 'search' || elem.type === 'tel' || elem.type === 'url' || elem.type === 'password') || nodeName === 'textarea' || elem.contentEditable === 'true'); +} + +function getSelectionInformation() { + var focusedElem = getActiveElementDeep(); + return { + focusedElem: focusedElem, + selectionRange: hasSelectionCapabilities(focusedElem) ? getSelection$1(focusedElem) : null + }; +} + +/** + * @restoreSelection: If any selection information was potentially lost, + * restore it. This is useful when performing operations that could remove dom + * nodes and place them back in, resulting in focus being lost. + */ +function restoreSelection(priorSelectionInformation) { + var curFocusedElem = getActiveElementDeep(); + var priorFocusedElem = priorSelectionInformation.focusedElem; + var priorSelectionRange = priorSelectionInformation.selectionRange; + if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) { + if (priorSelectionRange !== null && hasSelectionCapabilities(priorFocusedElem)) { + setSelection(priorFocusedElem, priorSelectionRange); + } + + // Focusing a node can change the scroll position, which is undesirable + var ancestors = []; + var ancestor = priorFocusedElem; + while (ancestor = ancestor.parentNode) { + if (ancestor.nodeType === ELEMENT_NODE) { + ancestors.push({ + element: ancestor, + left: ancestor.scrollLeft, + top: ancestor.scrollTop + }); + } + } + + if (typeof priorFocusedElem.focus === 'function') { + priorFocusedElem.focus(); + } + + for (var i = 0; i < ancestors.length; i++) { + var info = ancestors[i]; + info.element.scrollLeft = info.left; + info.element.scrollTop = info.top; + } + } +} + +/** + * @getSelection: Gets the selection bounds of a focused textarea, input or + * contentEditable node. + * -@input: Look up selection bounds of this input + * -@return {start: selectionStart, end: selectionEnd} + */ +function getSelection$1(input) { + var selection = void 0; + + if ('selectionStart' in input) { + // Modern browser with input or textarea. + selection = { + start: input.selectionStart, + end: input.selectionEnd + }; + } else { + // Content editable or old IE textarea. + selection = getOffsets(input); + } + + return selection || { start: 0, end: 0 }; +} + +/** + * @setSelection: Sets the selection bounds of a textarea or input and focuses + * the input. + * -@input Set selection bounds of this input or textarea + * -@offsets Object of same form that is returned from get* + */ +function setSelection(input, offsets) { + var start = offsets.start, + end = offsets.end; + + if (end === undefined) { + end = start; + } + + if ('selectionStart' in input) { + input.selectionStart = start; + input.selectionEnd = Math.min(end, input.value.length); + } else { + setOffsets(input, offsets); + } +} + +var skipSelectionChangeEvent = canUseDOM && 'documentMode' in document && document.documentMode <= 11; + +var eventTypes$3 = { + select: { + phasedRegistrationNames: { + bubbled: 'onSelect', + captured: 'onSelectCapture' + }, + dependencies: [TOP_BLUR, TOP_CONTEXT_MENU, TOP_DRAG_END, TOP_FOCUS, TOP_KEY_DOWN, TOP_KEY_UP, TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_SELECTION_CHANGE] + } +}; + +var activeElement$1 = null; +var activeElementInst$1 = null; +var lastSelection = null; +var mouseDown = false; + +/** + * Get an object which is a unique representation of the current selection. + * + * The return value will not be consistent across nodes or browsers, but + * two identical selections on the same node will return identical objects. + * + * @param {DOMElement} node + * @return {object} + */ +function getSelection(node) { + if ('selectionStart' in node && hasSelectionCapabilities(node)) { + return { + start: node.selectionStart, + end: node.selectionEnd + }; + } else { + var win = node.ownerDocument && node.ownerDocument.defaultView || window; + var selection = win.getSelection(); + return { + anchorNode: selection.anchorNode, + anchorOffset: selection.anchorOffset, + focusNode: selection.focusNode, + focusOffset: selection.focusOffset + }; + } +} + +/** + * Get document associated with the event target. + * + * @param {object} nativeEventTarget + * @return {Document} + */ +function getEventTargetDocument(eventTarget) { + return eventTarget.window === eventTarget ? eventTarget.document : eventTarget.nodeType === DOCUMENT_NODE ? eventTarget : eventTarget.ownerDocument; +} + +/** + * Poll selection to see whether it's changed. + * + * @param {object} nativeEvent + * @param {object} nativeEventTarget + * @return {?SyntheticEvent} + */ +function constructSelectEvent(nativeEvent, nativeEventTarget) { + // Ensure we have the right element, and that the user is not dragging a + // selection (this matches native `select` event behavior). In HTML5, select + // fires only on input and textarea thus if there's no focused element we + // won't dispatch. + var doc = getEventTargetDocument(nativeEventTarget); + + if (mouseDown || activeElement$1 == null || activeElement$1 !== getActiveElement(doc)) { + return null; + } + + // Only fire when selection has actually changed. + var currentSelection = getSelection(activeElement$1); + if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) { + lastSelection = currentSelection; + + var syntheticEvent = SyntheticEvent.getPooled(eventTypes$3.select, activeElementInst$1, nativeEvent, nativeEventTarget); + + syntheticEvent.type = 'select'; + syntheticEvent.target = activeElement$1; + + accumulateTwoPhaseDispatches(syntheticEvent); + + return syntheticEvent; + } + + return null; +} + +/** + * This plugin creates an `onSelect` event that normalizes select events + * across form elements. + * + * Supported elements are: + * - input (see `isTextInputElement`) + * - textarea + * - contentEditable + * + * This differs from native browser implementations in the following ways: + * - Fires on contentEditable fields as well as inputs. + * - Fires for collapsed selection. + * - Fires after user input. + */ +var SelectEventPlugin = { + eventTypes: eventTypes$3, + + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var doc = getEventTargetDocument(nativeEventTarget); + // Track whether all listeners exists for this plugin. If none exist, we do + // not extract events. See #3639. + if (!doc || !isListeningToAllDependencies('onSelect', doc)) { + return null; + } + + var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window; + + switch (topLevelType) { + // Track the input node that has focus. + case TOP_FOCUS: + if (isTextInputElement(targetNode) || targetNode.contentEditable === 'true') { + activeElement$1 = targetNode; + activeElementInst$1 = targetInst; + lastSelection = null; + } + break; + case TOP_BLUR: + activeElement$1 = null; + activeElementInst$1 = null; + lastSelection = null; + break; + // Don't fire the event while the user is dragging. This matches the + // semantics of the native select event. + case TOP_MOUSE_DOWN: + mouseDown = true; + break; + case TOP_CONTEXT_MENU: + case TOP_MOUSE_UP: + case TOP_DRAG_END: + mouseDown = false; + return constructSelectEvent(nativeEvent, nativeEventTarget); + // Chrome and IE fire non-standard event when selection is changed (and + // sometimes when it hasn't). IE's event fires out of order with respect + // to key and input events on deletion, so we discard it. + // + // Firefox doesn't support selectionchange, so check selection status + // after each key entry. The selection changes after keydown and before + // keyup, but we check on keydown as well in the case of holding down a + // key, when multiple keydown events are fired but only one keyup is. + // This is also our approach for IE handling, for the reason above. + case TOP_SELECTION_CHANGE: + if (skipSelectionChangeEvent) { + break; + } + // falls through + case TOP_KEY_DOWN: + case TOP_KEY_UP: + return constructSelectEvent(nativeEvent, nativeEventTarget); + } + + return null; + } +}; + +/** + * Inject modules for resolving DOM hierarchy and plugin ordering. + */ +injection.injectEventPluginOrder(DOMEventPluginOrder); +setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1); + +/** + * Some important event plugins included by default (without having to require + * them). + */ +injection.injectEventPluginsByName({ + SimpleEventPlugin: SimpleEventPlugin, + EnterLeaveEventPlugin: EnterLeaveEventPlugin, + ChangeEventPlugin: ChangeEventPlugin, + SelectEventPlugin: SelectEventPlugin, + BeforeInputEventPlugin: BeforeInputEventPlugin +}); + +function flattenChildren(children) { + var content = ''; + + // Flatten children. We'll warn if they are invalid + // during validateProps() which runs for hydration too. + // Note that this would throw on non-element objects. + // Elements are stringified (which is normally irrelevant + // but matters for ). + React.Children.forEach(children, function (child) { + if (child == null) { + return; + } + content += child; + // Note: we don't warn about invalid children here. + // Instead, this is done separately below so that + // it happens during the hydration codepath too. + }); + + return content; +} + +/** + * Implements an