event.js

原名JSPackager

YAHOO.util.CustomEvent = function (type, oScope, silent) {this.type = type;this.scope = oScope || window;this.silent = silent;this.subscribers = [];if (YAHOO.util.Event) {YAHOO.util.Event.regCE(this);}if (!this.silent) {}};YAHOO.util.CustomEvent.prototype = {subscribe:function (fn, obj, bOverride) {this.subscribers.push(new YAHOO.util.Subscriber(fn, obj, bOverride));}, unsubscribe:function (fn, obj) {var found = false;for (var i = 0, len = this.subscribers.length; i < len; ++i) {var s = this.subscribers[i];if (s && s.contains(fn, obj)) {this._delete(i);found = true;}}return found;}, fire:function () {var len = this.subscribers.length;var args = [];for (var i = 0; i < arguments.length; ++i) {args.push(arguments[i]);}if (!this.silent) {}for (i = 0; i < len; ++i) {var s = this.subscribers[i];if (s) {if (!this.silent) {}var scope = (s.override) ? s.obj : this.scope;s.fn.call(scope, this.type, args, s.obj);}}}, unsubscribeAll:function () {for (var i = 0, len = this.subscribers.length; i < len; ++i) {this._delete(i);}}, _delete:function (index) {var s = this.subscribers[index];if (s) {delete s.fn;delete s.obj;}delete this.subscribers[index];}, toString:function () {return "CustomEvent: " + "'" + this.type + "', " + "scope: " + this.scope;
}};YAHOO.util.Subscriber = function (fn, obj, bOverride) {this.fn = fn;this.obj = obj || null;this.override = (bOverride);};YAHOO.util.Subscriber.prototype.contains = function (fn, obj) {return (this.fn == fn && this.obj == obj);};YAHOO.util.Subscriber.prototype.toString = function () {return "Subscriber { obj: " + (this.obj || "") + ", override: " + (this.override || "no") + " }";};if (!YAHOO.util.Event) {YAHOO.util.Event = function () {var loadComplete = false;var listeners = [];var delayedListeners = [];var unloadListeners = [];var customEvents = [];var legacyEvents = [];var legacyHandlers = [];var retryCount = 0;var onAvailStack = [];var legacyMap = [];var counter = 0;return {POLL_RETRYS:200, POLL_INTERVAL:50, EL:0, TYPE:1, FN:2, WFN:3, SCOPE:3, ADJ_SCOPE:4, isSafari:(/Safari|Konqueror|KHTML/gi).test(navigator.userAgent), isIE:(!this.isSafari && !navigator.userAgent.match(/opera/gi) && navigator.userAgent.match(/msie/gi)), addDelayedListener:function (el, sType, fn, oScope, bOverride) {delayedListeners[delayedListeners.length] = [el, sType, fn, oScope, bOverride];if (loadComplete) {retryCount = this.POLL_RETRYS;this.startTimeout(0);}}, startTimeout:function (interval) {var i = (interval || interval === 0) ? interval : this.POLL_INTERVAL;
var self = this;var callback = function () {self._tryPreloadAttach();};this.timeout = setTimeout(callback, i);}, onAvailable:function (p_id, p_fn, p_obj, p_override) {onAvailStack.push({id:p_id, fn:p_fn, obj:p_obj, override:p_override});retryCount = this.POLL_RETRYS;this.startTimeout(0);}, addListener:function (el, sType, fn, oScope, bOverride) {if (!fn || !fn.call) {return false;}if (this._isValidCollection(el)) {var ok = true;for (var i = 0, len = el.length; i < len; ++i) {ok = (this.on(el[i], sType, fn, oScope, bOverride) && ok);}return ok;} else {if (typeof el == "string") {var oEl = this.getEl(el);if (loadComplete && oEl) {el = oEl;} else {this.addDelayedListener(el, sType, fn, oScope, bOverride);return true;}}}if (!el) {return false;}if ("unload" == sType && oScope !== this) {unloadListeners[unloadListeners.length] = [el, sType, fn, oScope, bOverride];return true;}var scope = (bOverride) ? oScope : el;var wrappedFn = function (e) {return fn.call(scope, YAHOO.util.Event.getEvent(e), oScope);
};var li = [el, sType, fn, wrappedFn, scope];var index = listeners.length;listeners[index] = li;if (this.useLegacyEvent(el, sType)) {var legacyIndex = this.getLegacyIndex(el, sType);if (legacyIndex == -1) {legacyIndex = legacyEvents.length;legacyMap[el.id + sType] = legacyIndex;legacyEvents[legacyIndex] = [el, sType, el["on" + sType]];legacyHandlers[legacyIndex] = [];el["on" + sType] = function (e) {YAHOO.util.Event.fireLegacyEvent(YAHOO.util.Event.getEvent(e), legacyIndex);};}legacyHandlers[legacyIndex].push(index);} else {if (el.addEventListener) {el.addEventListener(sType, wrappedFn, false);} else {if (el.attachEvent) {el.attachEvent("on" + sType, wrappedFn);}}}return true;}, fireLegacyEvent:function (e, legacyIndex) {var ok = true;var le = legacyHandlers[legacyIndex];for (var i = 0, len = le.length; i < len; ++i) {
var index = le[i];if (index) {var li = listeners[index];if (li && li[this.WFN]) {var scope = li[this.ADJ_SCOPE];var ret = li[this.WFN].call(scope, e);ok = (ok && ret);} else {delete le[i];}}}return ok;}, getLegacyIndex:function (el, sType) {var key = this.generateId(el) + sType;if (typeof legacyMap[key] == "undefined") {return -1;} else {return legacyMap[key];}}, useLegacyEvent:function (el, sType) {if (!el.addEventListener && !el.attachEvent) {return true;} else {if (this.isSafari) {if ("click" == sType || "dblclick" == sType) {return true;}}}return false;}, removeListener:function (el, sType, fn, index) {if (!fn || !fn.call) {return false;}if (typeof el == "string") {el = this.getEl(el);} else {if (this._isValidCollection(el)) {var ok = true;for (var i = 0, len = el.length; i < len; ++i) {ok = (this.removeListener(el[i], sType, fn) && ok);}return ok;}}if ("unload" == sType) {for (i = 0, len = unloadListeners.length; i < len; i++) {
var li = unloadListeners[i];if (li && li[0] == el && li[1] == sType && li[2] == fn) {delete unloadListeners[i];return true;}}return false;}var cacheItem = null;if ("undefined" == typeof index) {index = this._getCacheIndex(el, sType, fn);}if (index >= 0) {cacheItem = listeners[index];}if (!el || !cacheItem) {return false;}if (el.removeEventListener) {el.removeEventListener(sType, cacheItem[this.WFN], false);} else {if (el.detachEvent) {el.detachEvent("on" + sType, cacheItem[this.WFN]);}}delete listeners[index][this.WFN];delete listeners[index][this.FN];delete listeners[index];return true;}, getTarget:function (ev, resolveTextNode) {var t = ev.target || ev.srcElement;return this.resolveTextNode(t);}, resolveTextNode:function (node) {if (node && node.nodeName && "#TEXT" == node.nodeName.toUpperCase()) {return node.parentNode;} else {return node;}}, getPageX:function (ev) {var x = ev.pageX;if (!x && 0 !== x) {x = ev.clientX || 0;if (this.isIE) {x += this._getScrollLeft();}}return x;}, getPageY:function (ev) {var y = ev.pageY;if (!y && 0 !== y) {y = ev.clientY || 0;if (this.isIE) {y += this._getScrollTop();}}return y;}, getXY:function (ev) {return [this.getPageX(ev), this.getPageY(ev)];}, getRelatedTarget:function (ev) {var t = ev.relatedTarget;if (!t) {if (ev.type == "mouseout") {
t = ev.toElement;} else {if (ev.type == "mouseover") {t = ev.fromElement;}}}return this.resolveTextNode(t);}, getTime:function (ev) {if (!ev.time) {var t = new Date().getTime();try {ev.time = t;}catch (e) {return t;}}return ev.time;}, stopEvent:function (ev) {this.stopPropagation(ev);this.preventDefault(ev);}, stopPropagation:function (ev) {if (ev.stopPropagation) {ev.stopPropagation();} else {ev.cancelBubble = true;}}, preventDefault:function (ev) {if (ev.preventDefault) {ev.preventDefault();} else {ev.returnValue = false;}}, getEvent:function (e) {var ev = e || window.event;if (!ev) {var c = this.getEvent.caller;while (c) {ev = c.arguments[0];if (ev && Event == ev.constructor) {break;}c = c.caller;}}return ev;}, getCharCode:function (ev) {return ev.charCode || ((ev.type == "keypress") ? ev.keyCode : 0);}, _getCacheIndex:function (el, sType, fn) {for (var i = 0, len = listeners.length; i < len; ++i) {var li = listeners[i];if (li && li[this.FN] == fn && li[this.EL] == el && li[this.TYPE] == sType) {return i;}}return -1;}, generateId:function (el) {
var id = el.id;if (!id) {id = "yuievtautoid-" + counter;++counter;el.id = id;}return id;}, _isValidCollection:function (o) {return (o && o.length && typeof o != "string" && !o.tagName && !o.alert && typeof o[0] != "undefined");}, elCache:{}, getEl:function (id) {return document.getElementById(id);}, clearCache:function () {}, regCE:function (ce) {customEvents.push(ce);}, _load:function (e) {loadComplete = true;}, _tryPreloadAttach:function () {if (this.locked) {return false;}this.locked = true;var tryAgain = !loadComplete;if (!tryAgain) {tryAgain = (retryCount > 0);}var stillDelayed = [];for (var i = 0, len = delayedListeners.length; i < len; ++i) {var d = delayedListeners[i];if (d) {var el = this.getEl(d[this.EL]);if (el) {this.on(el, d[this.TYPE], d[this.FN], d[this.SCOPE], d[this.ADJ_SCOPE]);delete delayedListeners[i];} else {stillDelayed.push(d);}}}delayedListeners = stillDelayed;var notAvail = [];for (i = 0, len = onAvailStack.length; i < len; ++i) {var item = onAvailStack[i];
if (item) {el = this.getEl(item.id);if (el) {var scope = (item.override) ? item.obj : el;item.fn.call(scope, item.obj);delete onAvailStack[i];} else {notAvail.push(item);}}}retryCount = (stillDelayed.length === 0 && notAvail.length === 0) ? 0 : retryCount - 1;if (tryAgain) {this.startTimeout();}this.locked = false;return true;}, purgeElement:function (el, recurse, sType) {var elListeners = this.getListeners(el, sType);if (elListeners) {for (var i = 0, len = elListeners.length; i < len; ++i) {var l = elListeners[i];this.removeListener(el, l.type, l.fn, l.index);}}if (recurse && el && el.childNodes) {for (i = 0, len = el.childNodes.length; i < len; ++i) {this.purgeElement(el.childNodes[i], recurse, sType);}}}, getListeners:function (el, sType) {var elListeners = [];if (listeners && listeners.length > 0) {for (var i = 0, len = listeners.length; i < len; ++i) {var l = listeners[i];if (l && l[this.EL] === el && (!sType || sType === l[this.TYPE])) {elListeners.push({type:l[this.TYPE], fn:l[this.FN], obj:l[this.SCOPE], adjust:l[this.ADJ_SCOPE], index:i});}}}return (elListeners.length) ? elListeners : null;
}, _unload:function (e, me) {for (var i = 0, len = unloadListeners.length; i < len; ++i) {var l = unloadListeners[i];if (l) {var scope = (l[this.ADJ_SCOPE]) ? l[this.SCOPE] : window;l[this.FN].call(scope, this.getEvent(e), l[this.SCOPE]);}}if (listeners && listeners.length > 0) {for (i = 0, len = listeners.length; i < len; ++i) {l = listeners[i];if (l) {this.removeListener(l[this.EL], l[this.TYPE], l[this.FN], i);}}this.clearCache();}for (i = 0, len = customEvents.length; i < len; ++i) {customEvents[i].unsubscribeAll();delete customEvents[i];}for (i = 0, len = legacyEvents.length; i < len; ++i) {delete legacyEvents[i][0];delete legacyEvents[i];}}, _getScrollLeft:function () {return this._getScroll()[1];}, _getScrollTop:function () {return this._getScroll()[0];}, _getScroll:function () {var dd = document.documentElement;db = document.body;if (dd && dd.scrollTop) {return [dd.scrollTop, dd.scrollLeft];} else {if (db) {return [db.scrollTop, db.scrollLeft];} else {return [0, 0];}}}};}();YAHOO.util.Event.on = YAHOO.util.Event.addListener;if (document && document.body) {YAHOO.util.Event._load();} else {YAHOO.util.Event.on(window, "load", YAHOO.util.Event._load, YAHOO.util.Event, true);
}YAHOO.util.Event.on(window, "unload", YAHOO.util.Event._unload, YAHOO.util.Event, true);YAHOO.util.Event._tryPreloadAttach();}