diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 07:56:49 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 07:56:49 +0000 |
commit | a415c29efee45520ae252d2aa28f1083a521cd7b (patch) | |
tree | f4ade4b6668ecc0765de7e1424f7c1427ad433ff /wp-includes/js/hoverIntent.js | |
parent | Initial commit. (diff) | |
download | wordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.tar.xz wordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.zip |
Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wp-includes/js/hoverIntent.js')
-rw-r--r-- | wp-includes/js/hoverIntent.js | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/wp-includes/js/hoverIntent.js b/wp-includes/js/hoverIntent.js new file mode 100644 index 0000000..1300148 --- /dev/null +++ b/wp-includes/js/hoverIntent.js @@ -0,0 +1,169 @@ +/*! + * hoverIntent v1.10.2 // 2020.04.28 // jQuery v1.7.0+ + * http://briancherne.github.io/jquery-hoverIntent/ + * + * You may use hoverIntent under the terms of the MIT license. Basically that + * means you are free to use hoverIntent as long as this header is left intact. + * Copyright 2007-2019 Brian Cherne + */ + +/** + * hoverIntent is similar to jQuery's built-in "hover" method except that + * instead of firing the handlerIn function immediately, hoverIntent checks + * to see if the user's mouse has slowed down (beneath the sensitivity + * threshold) before firing the event. The handlerOut function is only + * called after a matching handlerIn. + * + * // basic usage ... just like .hover() + * .hoverIntent( handlerIn, handlerOut ) + * .hoverIntent( handlerInOut ) + * + * // basic usage ... with event delegation! + * .hoverIntent( handlerIn, handlerOut, selector ) + * .hoverIntent( handlerInOut, selector ) + * + * // using a basic configuration object + * .hoverIntent( config ) + * + * @param handlerIn function OR configuration object + * @param handlerOut function OR selector for delegation OR undefined + * @param selector selector OR undefined + * @author Brian Cherne <brian(at)cherne(dot)net> + */ + +;(function(factory) { + 'use strict'; + if (typeof define === 'function' && define.amd) { + define(['jquery'], factory); + } else if (typeof module === 'object' && module.exports) { + module.exports = factory(require('jquery')); + } else if (jQuery && !jQuery.fn.hoverIntent) { + factory(jQuery); + } +})(function($) { + 'use strict'; + + // default configuration values + var _cfg = { + interval: 100, + sensitivity: 6, + timeout: 0 + }; + + // counter used to generate an ID for each instance + var INSTANCE_COUNT = 0; + + // current X and Y position of mouse, updated during mousemove tracking (shared across instances) + var cX, cY; + + // saves the current pointer position coordinates based on the given mousemove event + var track = function(ev) { + cX = ev.pageX; + cY = ev.pageY; + }; + + // compares current and previous mouse positions + var compare = function(ev,$el,s,cfg) { + // compare mouse positions to see if pointer has slowed enough to trigger `over` function + if ( Math.sqrt( (s.pX-cX)*(s.pX-cX) + (s.pY-cY)*(s.pY-cY) ) < cfg.sensitivity ) { + $el.off(s.event,track); + delete s.timeoutId; + // set hoverIntent state as active for this element (permits `out` handler to trigger) + s.isActive = true; + // overwrite old mouseenter event coordinates with most recent pointer position + ev.pageX = cX; ev.pageY = cY; + // clear coordinate data from state object + delete s.pX; delete s.pY; + return cfg.over.apply($el[0],[ev]); + } else { + // set previous coordinates for next comparison + s.pX = cX; s.pY = cY; + // use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs) + s.timeoutId = setTimeout( function(){compare(ev, $el, s, cfg);} , cfg.interval ); + } + }; + + // triggers given `out` function at configured `timeout` after a mouseleave and clears state + var delay = function(ev,$el,s,out) { + var data = $el.data('hoverIntent'); + if (data) { + delete data[s.id]; + } + return out.apply($el[0],[ev]); + }; + + // checks if `value` is a function + var isFunction = function(value) { + return typeof value === 'function'; + }; + + $.fn.hoverIntent = function(handlerIn,handlerOut,selector) { + // instance ID, used as a key to store and retrieve state information on an element + var instanceId = INSTANCE_COUNT++; + + // extend the default configuration and parse parameters + var cfg = $.extend({}, _cfg); + if ( $.isPlainObject(handlerIn) ) { + cfg = $.extend(cfg, handlerIn); + if ( !isFunction(cfg.out) ) { + cfg.out = cfg.over; + } + } else if ( isFunction(handlerOut) ) { + cfg = $.extend(cfg, { over: handlerIn, out: handlerOut, selector: selector } ); + } else { + cfg = $.extend(cfg, { over: handlerIn, out: handlerIn, selector: handlerOut } ); + } + + // A private function for handling mouse 'hovering' + var handleHover = function(e) { + // cloned event to pass to handlers (copy required for event object to be passed in IE) + var ev = $.extend({},e); + + // the current target of the mouse event, wrapped in a jQuery object + var $el = $(this); + + // read hoverIntent data from element (or initialize if not present) + var hoverIntentData = $el.data('hoverIntent'); + if (!hoverIntentData) { $el.data('hoverIntent', (hoverIntentData = {})); } + + // read per-instance state from element (or initialize if not present) + var state = hoverIntentData[instanceId]; + if (!state) { hoverIntentData[instanceId] = state = { id: instanceId }; } + + // state properties: + // id = instance ID, used to clean up data + // timeoutId = timeout ID, reused for tracking mouse position and delaying "out" handler + // isActive = plugin state, true after `over` is called just until `out` is called + // pX, pY = previously-measured pointer coordinates, updated at each polling interval + // event = string representing the namespaced event used for mouse tracking + + // clear any existing timeout + if (state.timeoutId) { state.timeoutId = clearTimeout(state.timeoutId); } + + // namespaced event used to register and unregister mousemove tracking + var mousemove = state.event = 'mousemove.hoverIntent.hoverIntent'+instanceId; + + // handle the event, based on its type + if (e.type === 'mouseenter') { + // do nothing if already active + if (state.isActive) { return; } + // set "previous" X and Y position based on initial entry point + state.pX = ev.pageX; state.pY = ev.pageY; + // update "current" X and Y position based on mousemove + $el.off(mousemove,track).on(mousemove,track); + // start polling interval (self-calling timeout) to compare mouse coordinates over time + state.timeoutId = setTimeout( function(){compare(ev,$el,state,cfg);} , cfg.interval ); + } else { // "mouseleave" + // do nothing if not already active + if (!state.isActive) { return; } + // unbind expensive mousemove event + $el.off(mousemove,track); + // if hoverIntent state is true, then call the mouseOut function after the specified delay + state.timeoutId = setTimeout( function(){delay(ev,$el,state,cfg.out);} , cfg.timeout ); + } + }; + + // listen for mouseenter and mouseleave + return this.on({'mouseenter.hoverIntent':handleHover,'mouseleave.hoverIntent':handleHover}, cfg.selector); + }; +}); |