Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 260 insertions, 0 deletions

diff --git a/devtools/client/accessibility/accessibility-view.js b/devtools/client/accessibility/accessibility-view.js
new file mode 100644
index 0000000000..36b5aa9e6e
--- /dev/null
+++ b/devtools/client/accessibility/accessibility-view.js
@@ -0,0 +1,260 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+/* global EVENTS */
+
+const nodeConstants = require("resource://devtools/shared/dom-node-constants.js");
+
+// React & Redux
+const {
+  createFactory,
+  createElement,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const ReactDOM = require("resource://devtools/client/shared/vendor/react-dom.js");
+const {
+  Provider,
+} = require("resource://devtools/client/shared/vendor/react-redux.js");
+
+// Accessibility Panel
+const MainFrame = createFactory(
+  require("resource://devtools/client/accessibility/components/MainFrame.js")
+);
+
+// Store
+const createStore = require("resource://devtools/client/shared/redux/create-store.js");
+
+// Reducers
+const {
+  reducers,
+} = require("resource://devtools/client/accessibility/reducers/index.js");
+const thunkOptions = { options: {} };
+const store = createStore(reducers, {
+  // Thunk options will be updated, when we [re]initialize the accessibility
+  // view.
+  thunkOptions,
+});
+
+// Actions
+const {
+  reset,
+} = require("resource://devtools/client/accessibility/actions/ui.js");
+const {
+  select,
+  highlight,
+} = require("resource://devtools/client/accessibility/actions/accessibles.js");
+
+/**
+ * This object represents view of the Accessibility panel and is responsible
+ * for rendering the content. It renders the top level ReactJS
+ * component: the MainFrame.
+ */
+function AccessibilityView(localStore) {
+  addEventListener("devtools/chrome/message", this.onMessage.bind(this), true);
+  this.store = localStore;
+}
+
+AccessibilityView.prototype = {
+  /**
+   * Initialize accessibility view, create its top level component and set the
+   * data store.
+   *
+   * @param {Object}
+   *        Object that contains the following properties:
+   * - supports                               {JSON}
+   *                                          a collection of flags indicating
+   *                                          which accessibility panel features
+   *                                          are supported by the current
+   *                                          serverside version.
+   * - fluentBundles                          {Array}
+   *                                          array of FluentBundles elements
+   *                                          for localization
+   * - toolbox                                {Object}
+   *                                          devtools toolbox.
+   * - getAccessibilityTreeRoot               {Function}
+   *                                          Returns the topmost accessibiliity
+   *                                          walker that is used as the root of
+   *                                          the accessibility tree.
+   * - startListeningForAccessibilityEvents   {Function}
+   *                                          Add listeners for specific
+   *                                          accessibility events.
+   * - stopListeningForAccessibilityEvents    {Function}
+   *                                          Remove listeners for specific
+   *                                          accessibility events.
+   * - audit                                  {Function}
+   *                                          Audit function that will start
+   *                                          accessibility audit for given types
+   *                                          of accessibility issues.
+   * - simulate                               {null|Function}
+   *                                          Apply simulation of a given type
+   *                                          (by setting color matrices in
+   *                                          docShell).
+   * - toggleDisplayTabbingOrder              {Function}
+   *                                          Toggle the highlight of focusable
+   *                                          elements along with their tabbing
+   *                                          index.
+   * - enableAccessibility                    {Function}
+   *                                          Enable accessibility services.
+   * - resetAccessiblity                      {Function}
+   *                                          Reset the state of the
+   *                                          accessibility services.
+   * - startListeningForLifecycleEvents       {Function}
+   *                                          Add listeners for accessibility
+   *                                          service lifecycle events.
+   * - stopListeningForLifecycleEvents        {Function}
+   *                                          Remove listeners for accessibility
+   *                                          service lifecycle events.
+   * - startListeningForParentLifecycleEvents {Function}
+   *                                          Add listeners for parent process
+   *                                          accessibility service lifecycle
+   *                                          events.
+   * - stopListeningForParentLifecycleEvents  {Function}
+   *                                          Remove listeners for parent
+   *                                          process accessibility service
+   *                                          lifecycle events.
+   * - highlightAccessible                    {Function}
+   *                                          Highlight accessible object.
+   * - unhighlightAccessible                  {Function}
+   *                                          Unhighlight accessible object.
+   */
+  async initialize({
+    supports,
+    fluentBundles,
+    toolbox,
+    getAccessibilityTreeRoot,
+    startListeningForAccessibilityEvents,
+    stopListeningForAccessibilityEvents,
+    audit,
+    simulate,
+    toggleDisplayTabbingOrder,
+    enableAccessibility,
+    resetAccessiblity,
+    startListeningForLifecycleEvents,
+    stopListeningForLifecycleEvents,
+    startListeningForParentLifecycleEvents,
+    stopListeningForParentLifecycleEvents,
+    highlightAccessible,
+    unhighlightAccessible,
+  }) {
+    // Make sure state is reset every time accessibility panel is initialized.
+    await this.store.dispatch(reset(resetAccessiblity, supports));
+    const container = document.getElementById("content");
+    const mainFrame = MainFrame({
+      fluentBundles,
+      toolbox,
+      getAccessibilityTreeRoot,
+      startListeningForAccessibilityEvents,
+      stopListeningForAccessibilityEvents,
+      audit,
+      simulate,
+      enableAccessibility,
+      resetAccessiblity,
+      startListeningForLifecycleEvents,
+      stopListeningForLifecycleEvents,
+      startListeningForParentLifecycleEvents,
+      stopListeningForParentLifecycleEvents,
+      highlightAccessible,
+      unhighlightAccessible,
+    });
+    thunkOptions.options.toggleDisplayTabbingOrder = toggleDisplayTabbingOrder;
+    // Render top level component
+    const provider = createElement(Provider, { store: this.store }, mainFrame);
+    window.once(EVENTS.PROPERTIES_UPDATED).then(() => {
+      window.emit(EVENTS.INITIALIZED);
+    });
+    this.mainFrame = ReactDOM.render(provider, container);
+  },
+
+  destroy() {
+    const container = document.getElementById("content");
+    ReactDOM.unmountComponentAtNode(container);
+  },
+
+  async selectAccessible(accessible) {
+    await this.store.dispatch(select(accessible));
+    window.emit(EVENTS.NEW_ACCESSIBLE_FRONT_INSPECTED);
+  },
+
+  async highlightAccessible(accessible) {
+    await this.store.dispatch(highlight(accessible));
+    window.emit(EVENTS.NEW_ACCESSIBLE_FRONT_HIGHLIGHTED);
+  },
+
+  async selectNodeAccessible(node) {
+    if (!node) {
+      return;
+    }
+
+    const accessibilityFront = await node.targetFront.getFront("accessibility");
+    const accessibleWalkerFront = await accessibilityFront.getWalker();
+    let accessible = await accessibleWalkerFront.getAccessibleFor(node);
+    if (accessible) {
+      await accessible.hydrate();
+    }
+
+    // If node does not have an accessible object, try to find node's child text node and
+    // try to retrieve an accessible object for that child instead. This is the best
+    // effort approach until there's accessibility API to retrieve accessible object at
+    // point.
+    if (!accessible || accessible.indexInParent < 0) {
+      const { nodes: children } = await node.walkerFront.children(node);
+      for (const child of children) {
+        if (child.nodeType === nodeConstants.TEXT_NODE) {
+          accessible = await accessibleWalkerFront.getAccessibleFor(child);
+          // indexInParent property is only available with additional request
+          // for data (hydration) about the accessible object.
+          if (accessible) {
+            await accessible.hydrate();
+            if (accessible.indexInParent >= 0) {
+              break;
+            }
+          }
+        }
+      }
+    }
+
+    // Attempt to find closest accessible ancestor for a given node.
+    if (!accessible || accessible.indexInParent < 0) {
+      let parentNode = node.parentNode();
+      while (parentNode) {
+        accessible = await accessibleWalkerFront.getAccessibleFor(parentNode);
+        if (accessible) {
+          await accessible.hydrate();
+          if (accessible.indexInParent >= 0) {
+            break;
+          }
+        }
+
+        parentNode = parentNode.parentNode();
+      }
+    }
+
+    // Do not set the selected state if there is no corresponding accessible.
+    if (!accessible) {
+      console.warn(
+        `No accessible object found for a node or a node in its ancestry: ${node.actorID}`
+      );
+      return;
+    }
+
+    await this.store.dispatch(select(accessible));
+    window.emit(EVENTS.NEW_ACCESSIBLE_FRONT_INSPECTED);
+  },
+
+  /**
+   * Process message from accessibility panel.
+   *
+   * @param {Object} event  message type and data.
+   */
+  onMessage(event) {
+    const data = event.data;
+    const method = data.type;
+
+    if (typeof this[method] === "function") {
+      this[method](...data.args);
+    }
+  },
+};
+
+window.view = new AccessibilityView(store);