Current Path : C:/xampp/htdocs/moodle/lib/yuilib/3.17.2/event-base/ |
Current File : C:/xampp/htdocs/moodle/lib/yuilib/3.17.2/event-base/event-base.js |
/* YUI 3.17.2 (build 9c3c78e) Copyright 2014 Yahoo! Inc. All rights reserved. Licensed under the BSD License. http://yuilibrary.com/license/ */ YUI.add('event-base', function (Y, NAME) { /* * DOM event listener abstraction layer * @module event * @submodule event-base */ /** * The domready event fires at the moment the browser's DOM is * usable. In most cases, this is before images are fully * downloaded, allowing you to provide a more responsive user * interface. * * In YUI 3, domready subscribers will be notified immediately if * that moment has already passed when the subscription is created. * * One exception is if the yui.js file is dynamically injected into * the page. If this is done, you must tell the YUI instance that * you did this in order for DOMReady (and window load events) to * fire normally. That configuration option is 'injected' -- set * it to true if the yui.js script is not included inline. * * This method is part of the 'event-ready' module, which is a * submodule of 'event'. * * @event domready * @for YUI */ Y.publish('domready', { fireOnce: true, async: true }); if (YUI.Env.DOMReady) { Y.fire('domready'); } else { Y.Do.before(function() { Y.fire('domready'); }, YUI.Env, '_ready'); } /** * Custom event engine, DOM event listener abstraction layer, synthetic DOM * events. * @module event * @submodule event-base */ /** * Wraps a DOM event, properties requiring browser abstraction are * fixed here. Provids a security layer when required. * @class DOMEventFacade * @param ev {Event} the DOM event * @param currentTarget {HTMLElement} the element the listener was attached to * @param wrapper {CustomEvent} the custom event wrapper for this DOM event */ var ua = Y.UA, EMPTY = {}, /** * webkit key remapping required for Safari < 3.1 * @property webkitKeymap * @private */ webkitKeymap = { 63232: 38, // up 63233: 40, // down 63234: 37, // left 63235: 39, // right 63276: 33, // page up 63277: 34, // page down 25: 9, // SHIFT-TAB (Safari provides a different key code in // this case, even though the shiftKey modifier is set) 63272: 46, // delete 63273: 36, // home 63275: 35 // end }, /** * Returns a wrapped node. Intended to be used on event targets, * so it will return the node's parent if the target is a text * node. * * If accessing a property of the node throws an error, this is * probably the anonymous div wrapper Gecko adds inside text * nodes. This likely will only occur when attempting to access * the relatedTarget. In this case, we now return null because * the anonymous div is completely useless and we do not know * what the related target was because we can't even get to * the element's parent node. * * @method resolve * @private */ resolve = function(n) { if (!n) { return n; } try { if (n && 3 == n.nodeType) { n = n.parentNode; } } catch(e) { return null; } return Y.one(n); }, DOMEventFacade = function(ev, currentTarget, wrapper) { this._event = ev; this._currentTarget = currentTarget; this._wrapper = wrapper || EMPTY; // if not lazy init this.init(); }; Y.extend(DOMEventFacade, Object, { init: function() { var e = this._event, overrides = this._wrapper.overrides, x = e.pageX, y = e.pageY, c, currentTarget = this._currentTarget; this.altKey = e.altKey; this.ctrlKey = e.ctrlKey; this.metaKey = e.metaKey; this.shiftKey = e.shiftKey; this.type = (overrides && overrides.type) || e.type; this.clientX = e.clientX; this.clientY = e.clientY; this.pageX = x; this.pageY = y; // charCode is unknown in keyup, keydown. keyCode is unknown in keypress. // FF 3.6 - 8+? pass 0 for keyCode in keypress events. // Webkit, FF 3.6-8+?, and IE9+? pass 0 for charCode in keydown, keyup. // Webkit and IE9+? duplicate charCode in keyCode. // Opera never sets charCode, always keyCode (though with the charCode). // IE6-8 don't set charCode or which. // All browsers other than IE6-8 set which=keyCode in keydown, keyup, and // which=charCode in keypress. // // Moral of the story: (e.which || e.keyCode) will always return the // known code for that key event phase. e.keyCode is often different in // keypress from keydown and keyup. c = e.keyCode || e.charCode; if (ua.webkit && (c in webkitKeymap)) { c = webkitKeymap[c]; } this.keyCode = c; this.charCode = c; // Fill in e.which for IE - implementers should always use this over // e.keyCode or e.charCode. this.which = e.which || e.charCode || c; // this.button = e.button; this.button = this.which; this.target = resolve(e.target); this.currentTarget = resolve(currentTarget); this.relatedTarget = resolve(e.relatedTarget); if (e.type == "mousewheel" || e.type == "DOMMouseScroll") { this.wheelDelta = (e.detail) ? (e.detail * -1) : Math.round(e.wheelDelta / 80) || ((e.wheelDelta < 0) ? -1 : 1); } if (this._touch) { this._touch(e, currentTarget, this._wrapper); } }, stopPropagation: function() { this._event.stopPropagation(); this._wrapper.stopped = 1; this.stopped = 1; }, stopImmediatePropagation: function() { var e = this._event; if (e.stopImmediatePropagation) { e.stopImmediatePropagation(); } else { this.stopPropagation(); } this._wrapper.stopped = 2; this.stopped = 2; }, preventDefault: function(returnValue) { var e = this._event; e.preventDefault(); if (returnValue) { e.returnValue = returnValue; } this._wrapper.prevented = 1; this.prevented = 1; }, halt: function(immediate) { if (immediate) { this.stopImmediatePropagation(); } else { this.stopPropagation(); } this.preventDefault(); } }); DOMEventFacade.resolve = resolve; Y.DOM2EventFacade = DOMEventFacade; Y.DOMEventFacade = DOMEventFacade; /** * The native event * @property _event * @type {DOMEvent} * @private */ /** The name of the event (e.g. "click") @property type @type {String} **/ /** `true` if the "alt" or "option" key is pressed. @property altKey @type {Boolean} **/ /** `true` if the shift key is pressed. @property shiftKey @type {Boolean} **/ /** `true` if the "Windows" key on a Windows keyboard, "command" key on an Apple keyboard, or "meta" key on other keyboards is pressed. @property metaKey @type {Boolean} **/ /** `true` if the "Ctrl" or "control" key is pressed. @property ctrlKey @type {Boolean} **/ /** * The X location of the event on the page (including scroll) * @property pageX * @type {Number} */ /** * The Y location of the event on the page (including scroll) * @property pageY * @type {Number} */ /** * The X location of the event in the viewport * @property clientX * @type {Number} */ /** * The Y location of the event in the viewport * @property clientY * @type {Number} */ /** * The keyCode for key events. Uses charCode if keyCode is not available * @property keyCode * @type {Number} */ /** * The charCode for key events. Same as keyCode * @property charCode * @type {Number} */ /** * The button that was pushed. 1 for left click, 2 for middle click, 3 for * right click. This is only reliably populated on `mouseup` events. * @property button * @type {Number} */ /** * The button that was pushed. Same as button. * @property which * @type {Number} */ /** * Node reference for the targeted element * @property target * @type {Node} */ /** * Node reference for the element that the listener was attached to. * @property currentTarget * @type {Node} */ /** * Node reference to the relatedTarget * @property relatedTarget * @type {Node} */ /** * Number representing the direction and velocity of the movement of the mousewheel. * Negative is down, the higher the number, the faster. Applies to the mousewheel event. * @property wheelDelta * @type {Number} */ /** * Stops the propagation to the next bubble target * @method stopPropagation */ /** * Stops the propagation to the next bubble target and * prevents any additional listeners from being exectued * on the current target. * @method stopImmediatePropagation */ /** * Prevents the event's default behavior * @method preventDefault * @param returnValue {string} sets the returnValue of the event to this value * (rather than the default false value). This can be used to add a customized * confirmation query to the beforeunload event). */ /** * Stops the event propagation and prevents the default * event behavior. * @method halt * @param immediate {boolean} if true additional listeners * on the current target will not be executed */ (function() { /** * The event utility provides functions to add and remove event listeners, * event cleansing. It also tries to automatically remove listeners it * registers during the unload event. * @module event * @main event * @submodule event-base */ /** * The event utility provides functions to add and remove event listeners, * event cleansing. It also tries to automatically remove listeners it * registers during the unload event. * * @class Event * @static */ Y.Env.evt.dom_wrappers = {}; Y.Env.evt.dom_map = {}; var _eventenv = Y.Env.evt, config = Y.config, win = config.win, add = YUI.Env.add, remove = YUI.Env.remove, onLoad = function() { YUI.Env.windowLoaded = true; Y.Event._load(); remove(win, "load", onLoad); }, onUnload = function() { Y.Event._unload(); }, EVENT_READY = 'domready', COMPAT_ARG = '~yui|2|compat~', shouldIterate = function(o) { try { // TODO: See if there's a more performant way to return true early on this, for the common case return (o && typeof o !== "string" && Y.Lang.isNumber(o.length) && !o.tagName && !Y.DOM.isWindow(o)); } catch(ex) { return false; } }, // aliases to support DOM event subscription clean up when the last // subscriber is detached. deleteAndClean overrides the DOM event's wrapper // CustomEvent _delete method. _ceProtoDelete = Y.CustomEvent.prototype._delete, _deleteAndClean = function(s) { var ret = _ceProtoDelete.apply(this, arguments); if (!this.hasSubs()) { Y.Event._clean(this); } return ret; }, Event = function() { /** * True after the onload event has fired * @property _loadComplete * @type boolean * @static * @private */ var _loadComplete = false, /** * The number of times to poll after window.onload. This number is * increased if additional late-bound handlers are requested after * the page load. * @property _retryCount * @static * @private */ _retryCount = 0, /** * onAvailable listeners * @property _avail * @static * @private */ _avail = [], /** * Custom event wrappers for DOM events. Key is * 'event:' + Element uid stamp + event type * @property _wrappers * @type CustomEvent * @static * @private */ _wrappers = _eventenv.dom_wrappers, _windowLoadKey = null, /** * Custom event wrapper map DOM events. Key is * Element uid stamp. Each item is a hash of custom event * wrappers as provided in the _wrappers collection. This * provides the infrastructure for getListeners. * @property _el_events * @static * @private */ _el_events = _eventenv.dom_map; return { /** * The number of times we should look for elements that are not * in the DOM at the time the event is requested after the document * has been loaded. The default is 1000@amp;40 ms, so it will poll * for 40 seconds or until all outstanding handlers are bound * (whichever comes first). * @property POLL_RETRYS * @type int * @static * @final */ POLL_RETRYS: 1000, /** * The poll interval in milliseconds * @property POLL_INTERVAL * @type int * @static * @final */ POLL_INTERVAL: 40, /** * addListener/removeListener can throw errors in unexpected scenarios. * These errors are suppressed, the method returns false, and this property * is set * @property lastError * @static * @type Error */ lastError: null, /** * poll handle * @property _interval * @static * @private */ _interval: null, /** * document readystate poll handle * @property _dri * @static * @private */ _dri: null, /** * True when the document is initially usable * @property DOMReady * @type boolean * @static */ DOMReady: false, /** * @method startInterval * @static * @private */ startInterval: function() { if (!Event._interval) { Event._interval = setInterval(Event._poll, Event.POLL_INTERVAL); } }, /** * Executes the supplied callback when the item with the supplied * id is found. This is meant to be used to execute behavior as * soon as possible as the page loads. If you use this after the * initial page load it will poll for a fixed time for the element. * The number of times it will poll and the frequency are * configurable. By default it will poll for 10 seconds. * * <p>The callback is executed with a single parameter: * the custom object parameter, if provided.</p> * * @method onAvailable * * @param {string||string[]} id the id of the element, or an array * of ids to look for. * @param {function} fn what to execute when the element is found. * @param {object} p_obj an optional object to be passed back as * a parameter to fn. * @param {boolean|object} p_override If set to true, fn will execute * in the context of p_obj, if set to an object it * will execute in the context of that object * @param checkContent {boolean} check child node readiness (onContentReady) * @static * @deprecated Use Y.on("available") */ // @TODO fix arguments onAvailable: function(id, fn, p_obj, p_override, checkContent, compat) { var a = Y.Array(id), i, availHandle; for (i=0; i<a.length; i=i+1) { _avail.push({ id: a[i], fn: fn, obj: p_obj, override: p_override, checkReady: checkContent, compat: compat }); } _retryCount = this.POLL_RETRYS; // We want the first test to be immediate, but async setTimeout(Event._poll, 0); availHandle = new Y.EventHandle({ _delete: function() { // set by the event system for lazy DOM listeners if (availHandle.handle) { availHandle.handle.detach(); return; } var i, j; // otherwise try to remove the onAvailable listener(s) for (i = 0; i < a.length; i++) { for (j = 0; j < _avail.length; j++) { if (a[i] === _avail[j].id) { _avail.splice(j, 1); } } } } }); return availHandle; }, /** * Works the same way as onAvailable, but additionally checks the * state of sibling elements to determine if the content of the * available element is safe to modify. * * <p>The callback is executed with a single parameter: * the custom object parameter, if provided.</p> * * @method onContentReady * * @param {string} id the id of the element to look for. * @param {function} fn what to execute when the element is ready. * @param {object} obj an optional object to be passed back as * a parameter to fn. * @param {boolean|object} override If set to true, fn will execute * in the context of p_obj. If an object, fn will * exectute in the context of that object * * @static * @deprecated Use Y.on("contentready") */ // @TODO fix arguments onContentReady: function(id, fn, obj, override, compat) { return Event.onAvailable(id, fn, obj, override, true, compat); }, /** * Adds an event listener * * @method attach * * @param {String} type The type of event to append * @param {Function} fn The method the event invokes * @param {String|HTMLElement|Array|NodeList} el An id, an element * reference, or a collection of ids and/or elements to assign the * listener to. * @param {Object} context optional context object * @param {Boolean|object} args 0..n arguments to pass to the callback * @return {EventHandle} an object to that can be used to detach the listener * * @static */ attach: function(type, fn, el, context) { return Event._attach(Y.Array(arguments, 0, true)); }, _createWrapper: function (el, type, capture, compat, facade) { var cewrapper, ek = Y.stamp(el), key = 'event:' + ek + type; if (false === facade) { key += 'native'; } if (capture) { key += 'capture'; } cewrapper = _wrappers[key]; if (!cewrapper) { // create CE wrapper cewrapper = Y.publish(key, { silent: true, bubbles: false, emitFacade:false, contextFn: function() { if (compat) { return cewrapper.el; } else { cewrapper.nodeRef = cewrapper.nodeRef || Y.one(cewrapper.el); return cewrapper.nodeRef; } } }); cewrapper.overrides = {}; // for later removeListener calls cewrapper.el = el; cewrapper.key = key; cewrapper.domkey = ek; cewrapper.type = type; cewrapper.fn = function(e) { cewrapper.fire(Event.getEvent(e, el, (compat || (false === facade)))); }; cewrapper.capture = capture; if (el == win && type == "load") { // window load happens once cewrapper.fireOnce = true; _windowLoadKey = key; } cewrapper._delete = _deleteAndClean; _wrappers[key] = cewrapper; _el_events[ek] = _el_events[ek] || {}; _el_events[ek][key] = cewrapper; add(el, type, cewrapper.fn, capture); } return cewrapper; }, _attach: function(args, conf) { var compat, handles, oEl, cewrapper, context, fireNow = false, ret, type = args[0], fn = args[1], el = args[2] || win, facade = conf && conf.facade, capture = conf && conf.capture, overrides = conf && conf.overrides; if (args[args.length-1] === COMPAT_ARG) { compat = true; } if (!fn || !fn.call) { return false; } // The el argument can be an array of elements or element ids. if (shouldIterate(el)) { handles=[]; Y.each(el, function(v, k) { args[2] = v; handles.push(Event._attach(args.slice(), conf)); }); // return (handles.length === 1) ? handles[0] : handles; return new Y.EventHandle(handles); // If the el argument is a string, we assume it is // actually the id of the element. If the page is loaded // we convert el to the actual element, otherwise we // defer attaching the event until the element is // ready } else if (Y.Lang.isString(el)) { // oEl = (compat) ? Y.DOM.byId(el) : Y.Selector.query(el); if (compat) { oEl = Y.DOM.byId(el); } else { oEl = Y.Selector.query(el); switch (oEl.length) { case 0: oEl = null; break; case 1: oEl = oEl[0]; break; default: args[2] = oEl; return Event._attach(args, conf); } } if (oEl) { el = oEl; // Not found = defer adding the event until the element is available } else { ret = Event.onAvailable(el, function() { ret.handle = Event._attach(args, conf); }, Event, true, false, compat); return ret; } } // Element should be an html element or node if (!el) { return false; } if (Y.Node && Y.instanceOf(el, Y.Node)) { el = Y.Node.getDOMNode(el); } cewrapper = Event._createWrapper(el, type, capture, compat, facade); if (overrides) { Y.mix(cewrapper.overrides, overrides); } if (el == win && type == "load") { // if the load is complete, fire immediately. // all subscribers, including the current one // will be notified. if (YUI.Env.windowLoaded) { fireNow = true; } } if (compat) { args.pop(); } context = args[3]; // set context to the Node if not specified // ret = cewrapper.on.apply(cewrapper, trimmedArgs); ret = cewrapper._on(fn, context, (args.length > 4) ? args.slice(4) : null); if (fireNow) { cewrapper.fire(); } return ret; }, /** * Removes an event listener. Supports the signature the event was bound * with, but the preferred way to remove listeners is using the handle * that is returned when using Y.on * * @method detach * * @param {String} type the type of event to remove. * @param {Function} fn the method the event invokes. If fn is * undefined, then all event handlers for the type of event are * removed. * @param {String|HTMLElement|Array|NodeList|EventHandle} el An * event handle, an id, an element reference, or a collection * of ids and/or elements to remove the listener from. * @return {boolean} true if the unbind was successful, false otherwise. * @static */ detach: function(type, fn, el, obj) { var args=Y.Array(arguments, 0, true), compat, l, ok, i, id, ce; if (args[args.length-1] === COMPAT_ARG) { compat = true; // args.pop(); } if (type && type.detach) { return type.detach(); } // The el argument can be a string if (typeof el == "string") { // el = (compat) ? Y.DOM.byId(el) : Y.all(el); if (compat) { el = Y.DOM.byId(el); } else { el = Y.Selector.query(el); l = el.length; if (l < 1) { el = null; } else if (l == 1) { el = el[0]; } } // return Event.detach.apply(Event, args); } if (!el) { return false; } if (el.detach) { args.splice(2, 1); return el.detach.apply(el, args); // The el argument can be an array of elements or element ids. } else if (shouldIterate(el)) { ok = true; for (i=0, l=el.length; i<l; ++i) { args[2] = el[i]; ok = ( Y.Event.detach.apply(Y.Event, args) && ok ); } return ok; } if (!type || !fn || !fn.call) { return Event.purgeElement(el, false, type); } id = 'event:' + Y.stamp(el) + type; ce = _wrappers[id]; if (ce) { return ce.detach(fn); } else { return false; } }, /** * Finds the event in the window object, the caller's arguments, or * in the arguments of another method in the callstack. This is * executed automatically for events registered through the event * manager, so the implementer should not normally need to execute * this function at all. * @method getEvent * @param {Event} e the event parameter from the handler * @param {HTMLElement} el the element the listener was attached to * @return {Event} the event * @static */ getEvent: function(e, el, noFacade) { var ev = e || win.event; return (noFacade) ? ev : new Y.DOMEventFacade(ev, el, _wrappers['event:' + Y.stamp(el) + e.type]); }, /** * Generates an unique ID for the element if it does not already * have one. * @method generateId * @param el the element to create the id for * @return {string} the resulting id of the element * @static */ generateId: function(el) { return Y.DOM.generateID(el); }, /** * We want to be able to use getElementsByTagName as a collection * to attach a group of events to. Unfortunately, different * browsers return different types of collections. This function * tests to determine if the object is array-like. It will also * fail if the object is an array, but is empty. * @method _isValidCollection * @param o the object to test * @return {boolean} true if the object is array-like and populated * @deprecated was not meant to be used directly * @static * @private */ _isValidCollection: shouldIterate, /** * hook up any deferred listeners * @method _load * @static * @private */ _load: function(e) { if (!_loadComplete) { _loadComplete = true; // Just in case DOMReady did not go off for some reason // E._ready(); if (Y.fire) { Y.fire(EVENT_READY); } // Available elements may not have been detected before the // window load event fires. Try to find them now so that the // the user is more likely to get the onAvailable notifications // before the window load notification Event._poll(); } }, /** * Polling function that runs before the onload event fires, * attempting to attach to DOM Nodes as soon as they are * available * @method _poll * @static * @private */ _poll: function() { if (Event.locked) { return; } if (Y.UA.ie && !YUI.Env.DOMReady) { // Hold off if DOMReady has not fired and check current // readyState to protect against the IE operation aborted // issue. Event.startInterval(); return; } Event.locked = true; // keep trying until after the page is loaded. We need to // check the page load state prior to trying to bind the // elements so that we can be certain all elements have been // tested appropriately var i, len, item, el, notAvail, executeItem, tryAgain = !_loadComplete; if (!tryAgain) { tryAgain = (_retryCount > 0); } // onAvailable notAvail = []; executeItem = function (el, item) { var context, ov = item.override; try { if (item.compat) { if (item.override) { if (ov === true) { context = item.obj; } else { context = ov; } } else { context = el; } item.fn.call(context, item.obj); } else { context = item.obj || Y.one(el); item.fn.apply(context, (Y.Lang.isArray(ov)) ? ov : []); } } catch (e) { } }; // onAvailable for (i=0,len=_avail.length; i<len; ++i) { item = _avail[i]; if (item && !item.checkReady) { // el = (item.compat) ? Y.DOM.byId(item.id) : Y.one(item.id); el = (item.compat) ? Y.DOM.byId(item.id) : Y.Selector.query(item.id, null, true); if (el) { executeItem(el, item); _avail[i] = null; } else { notAvail.push(item); } } } // onContentReady for (i=0,len=_avail.length; i<len; ++i) { item = _avail[i]; if (item && item.checkReady) { // el = (item.compat) ? Y.DOM.byId(item.id) : Y.one(item.id); el = (item.compat) ? Y.DOM.byId(item.id) : Y.Selector.query(item.id, null, true); if (el) { // The element is available, but not necessarily ready // @todo should we test parentNode.nextSibling? if (_loadComplete || (el.get && el.get('nextSibling')) || el.nextSibling) { executeItem(el, item); _avail[i] = null; } } else { notAvail.push(item); } } } _retryCount = (notAvail.length === 0) ? 0 : _retryCount - 1; if (tryAgain) { // we may need to strip the nulled out items here Event.startInterval(); } else { clearInterval(Event._interval); Event._interval = null; } Event.locked = false; return; }, /** * Removes all listeners attached to the given element via addListener. * Optionally, the node's children can also be purged. * Optionally, you can specify a specific type of event to remove. * @method purgeElement * @param {HTMLElement} el the element to purge * @param {boolean} recurse recursively purge this element's children * as well. Use with caution. * @param {string} type optional type of listener to purge. If * left out, all listeners will be removed * @static */ purgeElement: function(el, recurse, type) { // var oEl = (Y.Lang.isString(el)) ? Y.one(el) : el, var oEl = (Y.Lang.isString(el)) ? Y.Selector.query(el, null, true) : el, lis = Event.getListeners(oEl, type), i, len, children, child; if (recurse && oEl) { lis = lis || []; children = Y.Selector.query('*', oEl); len = children.length; for (i = 0; i < len; ++i) { child = Event.getListeners(children[i], type); if (child) { lis = lis.concat(child); } } } if (lis) { for (i = 0, len = lis.length; i < len; ++i) { lis[i].detachAll(); } } }, /** * Removes all object references and the DOM proxy subscription for * a given event for a DOM node. * * @method _clean * @param wrapper {CustomEvent} Custom event proxy for the DOM * subscription * @private * @static * @since 3.4.0 */ _clean: function (wrapper) { var key = wrapper.key, domkey = wrapper.domkey; remove(wrapper.el, wrapper.type, wrapper.fn, wrapper.capture); delete _wrappers[key]; delete Y._yuievt.events[key]; if (_el_events[domkey]) { delete _el_events[domkey][key]; if (!Y.Object.size(_el_events[domkey])) { delete _el_events[domkey]; } } }, /** * Returns all listeners attached to the given element via addListener. * Optionally, you can specify a specific type of event to return. * @method getListeners * @param el {HTMLElement|string} the element or element id to inspect * @param type {string} optional type of listener to return. If * left out, all listeners will be returned * @return {CustomEvent} the custom event wrapper for the DOM event(s) * @static */ getListeners: function(el, type) { var ek = Y.stamp(el, true), evts = _el_events[ek], results=[] , key = (type) ? 'event:' + ek + type : null, adapters = _eventenv.plugins; if (!evts) { return null; } if (key) { // look for synthetic events if (adapters[type] && adapters[type].eventDef) { key += '_synth'; } if (evts[key]) { results.push(evts[key]); } // get native events as well key += 'native'; if (evts[key]) { results.push(evts[key]); } } else { Y.each(evts, function(v, k) { results.push(v); }); } return (results.length) ? results : null; }, /** * Removes all listeners registered by pe.event. Called * automatically during the unload event. * @method _unload * @static * @private */ _unload: function(e) { Y.each(_wrappers, function(v, k) { if (v.type == 'unload') { v.fire(e); } v.detachAll(); }); remove(win, "unload", onUnload); }, /** * Adds a DOM event directly without the caching, cleanup, context adj, etc * * @method nativeAdd * @param {HTMLElement} el the element to bind the handler to * @param {string} type the type of event handler * @param {function} fn the callback to invoke * @param {Boolean} capture capture or bubble phase * @static * @private */ nativeAdd: add, /** * Basic remove listener * * @method nativeRemove * @param {HTMLElement} el the element to bind the handler to * @param {string} type the type of event handler * @param {function} fn the callback to invoke * @param {Boolean} capture capture or bubble phase * @static * @private */ nativeRemove: remove }; }(); Y.Event = Event; if (config.injected || YUI.Env.windowLoaded) { onLoad(); } else { add(win, "load", onLoad); } // Process onAvailable/onContentReady items when when the DOM is ready in IE if (Y.UA.ie) { Y.on(EVENT_READY, Event._poll); // In IE6 and below, detach event handlers when the page is unloaded in // order to try and prevent cross-page memory leaks. This isn't done in // other browsers because a) it's not necessary, and b) it breaks the // back/forward cache. if (Y.UA.ie < 7) { try { add(win, "unload", onUnload); } catch(e) { } } } Event.Custom = Y.CustomEvent; Event.Subscriber = Y.Subscriber; Event.Target = Y.EventTarget; Event.Handle = Y.EventHandle; Event.Facade = Y.EventFacade; Event._poll(); }()); /** * DOM event listener abstraction layer * @module event * @submodule event-base */ /** * Executes the callback as soon as the specified element * is detected in the DOM. This function expects a selector * string for the element(s) to detect. If you already have * an element reference, you don't need this event. * @event available * @param type {string} 'available' * @param fn {function} the callback function to execute. * @param el {string} an selector for the element(s) to attach * @param context optional argument that specifies what 'this' refers to. * @param args* 0..n additional arguments to pass on to the callback function. * These arguments will be added after the event object. * @return {EventHandle} the detach handle * @for YUI */ Y.Env.evt.plugins.available = { on: function(type, fn, id, o) { var a = arguments.length > 4 ? Y.Array(arguments, 4, true) : null; return Y.Event.onAvailable.call(Y.Event, id, fn, o, a); } }; /** * Executes the callback as soon as the specified element * is detected in the DOM with a nextSibling property * (indicating that the element's children are available). * This function expects a selector * string for the element(s) to detect. If you already have * an element reference, you don't need this event. * @event contentready * @param type {string} 'contentready' * @param fn {function} the callback function to execute. * @param el {string} an selector for the element(s) to attach. * @param context optional argument that specifies what 'this' refers to. * @param args* 0..n additional arguments to pass on to the callback function. * These arguments will be added after the event object. * @return {EventHandle} the detach handle * @for YUI */ Y.Env.evt.plugins.contentready = { on: function(type, fn, id, o) { var a = arguments.length > 4 ? Y.Array(arguments, 4, true) : null; return Y.Event.onContentReady.call(Y.Event, id, fn, o, a); } }; }, '3.17.2', {"requires": ["event-custom-base"]});