662 lines
No EOL
23 KiB
JavaScript
662 lines
No EOL
23 KiB
JavaScript
/*
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* Ext JS Library 1.0.1
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* Copyright(c) 2006-2007, Ext JS, LLC.
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* licensing@extjs.com
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*
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.EventManager
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* Registers event handlers that want to receive a normalized EventObject instead of the standard browser event and provides
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* several useful events directly.
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* See {@link Ext.EventObject} for more details on normalized event objects.
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* @singleton
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*/
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Ext.EventManager = function(){
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var docReadyEvent, docReadyProcId, docReadyState = false;
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var resizeEvent, resizeTask, textEvent, textSize;
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var E = Ext.lib.Event;
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var D = Ext.lib.Dom;
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var fireDocReady = function(){
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if(!docReadyState){
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docReadyState = true;
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Ext.isReady = true;
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if(docReadyProcId){
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clearInterval(docReadyProcId);
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}
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if(Ext.isGecko || Ext.isOpera) {
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document.removeEventListener("DOMContentLoaded", fireDocReady, false);
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}
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if(docReadyEvent){
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docReadyEvent.fire();
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docReadyEvent.clearListeners();
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}
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}
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};
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var initDocReady = function(){
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docReadyEvent = new Ext.util.Event();
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if(Ext.isGecko || Ext.isOpera) {
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document.addEventListener("DOMContentLoaded", fireDocReady, false);
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}else if(Ext.isIE){
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// inspired by http://www.thefutureoftheweb.com/blog/2006/6/adddomloadevent
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document.write("<s"+'cript id="ie-deferred-loader" defer="defer" src="/'+'/:"></s'+"cript>");
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var defer = document.getElementById("ie-deferred-loader");
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defer.onreadystatechange = function(){
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if(this.readyState == "complete"){
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fireDocReady();
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defer.onreadystatechange = null;
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defer.parentNode.removeChild(defer);
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}
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};
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}else if(Ext.isSafari){
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docReadyProcId = setInterval(function(){
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var rs = document.readyState;
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if(rs == "complete") {
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fireDocReady();
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}
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}, 10);
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}
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// no matter what, make sure it fires on load
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E.on(window, "load", fireDocReady);
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};
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var createBuffered = function(h, o){
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var task = new Ext.util.DelayedTask(h);
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return function(e){
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// create new event object impl so new events don't wipe out properties
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e = new Ext.EventObjectImpl(e);
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task.delay(o.buffer, h, null, [e]);
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};
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};
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var createSingle = function(h, el, ename, fn){
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return function(e){
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Ext.EventManager.removeListener(el, ename, fn);
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h(e);
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};
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};
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var createDelayed = function(h, o){
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return function(e){
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// create new event object impl so new events don't wipe out properties
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e = new Ext.EventObjectImpl(e);
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setTimeout(function(){
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h(e);
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}, o.delay || 10);
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};
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};
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var listen = function(element, ename, opt, fn, scope){
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var o = (!opt || typeof opt == "boolean") ? {} : opt;
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fn = fn || o.fn; scope = scope || o.scope;
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var el = Ext.getDom(element);
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if(!el){
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throw "Error listening for \"" + ename + '\". Element "' + element + '" doesn\'t exist.';
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}
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var h = function(e){
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e = Ext.EventObject.setEvent(e);
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var t;
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if(o.delegate){
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t = e.getTarget(o.delegate, el);
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if(!t){
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return;
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}
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}else{
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t = e.target;
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}
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if(o.stopEvent === true){
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e.stopEvent();
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}
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if(o.preventDefault === true){
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e.preventDefault();
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}
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if(o.stopPropagation === true){
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e.stopPropagation();
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}
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if(o.normalized === false){
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e = e.browserEvent;
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}
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fn.call(scope || el, e, t, o);
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};
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if(o.delay){
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h = createDelayed(h, o);
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}
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if(o.single){
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h = createSingle(h, el, ename, fn);
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}
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if(o.buffer){
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h = createBuffered(h, o);
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}
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fn._handlers = fn._handlers || [];
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fn._handlers.push([Ext.id(el), ename, h]);
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E.on(el, ename, h);
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if(ename == "mousewheel" && el.addEventListener){ // workaround for jQuery
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el.addEventListener("DOMMouseScroll", h, false);
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E.on(window, 'unload', function(){
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el.removeEventListener("DOMMouseScroll", h, false);
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});
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}
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if(ename == "mousedown" && el == document){ // fix stopped mousedowns on the document
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Ext.EventManager.stoppedMouseDownEvent.addListener(h);
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}
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return h;
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};
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var stopListening = function(el, ename, fn){
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var id = Ext.id(el), hds = fn._handlers, hd = fn;
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if(hds){
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for(var i = 0, len = hds.length; i < len; i++){
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var h = hds[i];
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if(h[0] == id && h[1] == ename){
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hd = h[2];
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hds.splice(i, 1);
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break;
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}
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}
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}
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E.un(el, ename, hd);
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el = Ext.getDom(el);
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if(ename == "mousewheel" && el.addEventListener){
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el.removeEventListener("DOMMouseScroll", hd, false);
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}
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if(ename == "mousedown" && el == document){ // fix stopped mousedowns on the document
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Ext.EventManager.stoppedMouseDownEvent.removeListener(hd);
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}
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};
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var propRe = /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized)$/;
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var pub = {
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/**
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* This is no longer needed and is deprecated. Places a simple wrapper around an event handler to override the browser event
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* object with a Ext.EventObject
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An object that becomes the scope of the handler
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* @param {boolean} override If true, the obj passed in becomes
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* the execution scope of the listener
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* @return {Function} The wrapped function
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* @deprecated
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*/
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wrap : function(fn, scope, override){
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return function(e){
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Ext.EventObject.setEvent(e);
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fn.call(override ? scope || window : window, Ext.EventObject, scope);
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};
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},
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/**
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* Appends an event handler
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*
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* @param {String/HTMLElement} element The html element or id to assign the
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* event to
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* @param {String} eventName The type of event to append
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* @param {Function} fn The method the event invokes
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* @param {Object} options An object with standard EventManager options
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*/
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addListener : function(element, eventName, fn, scope, options){
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if(typeof eventName == "object"){
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var o = eventName;
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for(var e in o){
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if(propRe.test(e)){
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continue;
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}
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if(typeof o[e] == "function"){
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// shared options
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listen(element, e, o, o[e], o.scope);
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}else{
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// individual options
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listen(element, e, o[e]);
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}
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}
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return;
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}
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return listen(element, eventName, options, fn, scope);
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},
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/**
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* Removes an event handler
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*
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* @param {String/HTMLElement} element The id or html element to remove the
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* event from
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* @param {String} eventName The type of event
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* @param {Function} fn
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* @return {Boolean} True if a listener was actually removed
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*/
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removeListener : function(element, eventName, fn){
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return stopListening(element, eventName, fn);
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},
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/**
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* Fires when the document is ready (before onload and before images are loaded). Can be
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* accessed shorthanded Ext.onReady().
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An object that becomes the scope of the handler
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* @param {boolean} options
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*/
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onDocumentReady : function(fn, scope, options){
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if(docReadyState){ // if it already fired
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fn.call(scope || window, scope);
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return;
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}
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if(!docReadyEvent){
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initDocReady();
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}
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docReadyEvent.addListener(fn, scope, options);
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},
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/**
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* Fires when the window is resized and provides resize event buffering (50 milliseconds), passes new viewport width and height to handlers.
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An object that becomes the scope of the handler
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* @param {boolean} options
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*/
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onWindowResize : function(fn, scope, options){
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if(!resizeEvent){
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resizeEvent = new Ext.util.Event();
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resizeTask = new Ext.util.DelayedTask(function(){
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resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
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});
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E.on(window, "resize", function(){
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if(Ext.isIE){
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resizeTask.delay(50);
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}else{
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resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
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}
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});
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}
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resizeEvent.addListener(fn, scope, options);
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},
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/**
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* Fires when the user changes the active text size. Handler gets called with 2 params, the old size and the new size.
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An object that becomes the scope of the handler
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* @param {boolean} options
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*/
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onTextResize : function(fn, scope, options){
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if(!textEvent){
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textEvent = new Ext.util.Event();
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var textEl = new Ext.Element(document.createElement('div'));
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textEl.dom.className = 'x-text-resize';
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textEl.dom.innerHTML = 'X';
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textEl.appendTo(document.body);
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textSize = textEl.dom.offsetHeight;
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setInterval(function(){
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if(textEl.dom.offsetHeight != textSize){
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textEvent.fire(textSize, textSize = textEl.dom.offsetHeight);
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}
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}, this.textResizeInterval);
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}
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textEvent.addListener(fn, scope, options);
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},
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/**
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* Removes the passed window resize listener.
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* @param {Function} fn The method the event invokes
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* @param {Object} scope The scope of handler
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*/
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removeResizeListener : function(fn, scope){
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if(resizeEvent){
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resizeEvent.removeListener(fn, scope);
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}
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},
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fireResize : function(){
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if(resizeEvent){
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resizeEvent.fire(D.getViewWidth(), D.getViewHeight());
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}
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},
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/**
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* Url used for onDocumentReady with using SSL (defaults to Ext.SSL_SECURE_URL)
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*/
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ieDeferSrc : false,
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textResizeInterval : 50
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};
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/**
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* Appends an event handler (shorthand for addListener)
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*
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* @param {String/HTMLElement} element The html element or id to assign the
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* event to
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* @param {String} eventName The type of event to append
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An arbitrary object that will be
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* passed as a parameter to the handler
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* @param {boolean} override If true, the obj passed in becomes
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* the execution scope of the listener
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* @return {Function} The wrapper function created (to be used to remove the listener if necessary)
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* @method
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*/
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pub.on = pub.addListener;
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pub.un = pub.removeListener;
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pub.stoppedMouseDownEvent = new Ext.util.Event();
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return pub;
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}();
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/**
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* Fires when the document is ready (before onload and before images are loaded). Shorthand of {@link Ext.EventManager#onDocumentReady}.
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* @param {Function} fn The method the event invokes
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* @param {Object} scope An object that becomes the scope of the handler
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* @param {boolean} override If true, the obj passed in becomes
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* the execution scope of the listener
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* @member Ext
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* @method onReady
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*/
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Ext.onReady = Ext.EventManager.onDocumentReady;
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Ext.onReady(function(){
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var bd = Ext.get(document.body);
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if(!bd){ return; }
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var cls = Ext.isIE ? "ext-ie"
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: Ext.isGecko ? "ext-gecko"
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: Ext.isOpera ? "ext-opera"
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: Ext.isSafari ? "ext-safari" : "";
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if(Ext.isBorderBox){
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cls += ' ext-border-box';
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}
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if(Ext.isStrict){
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cls += ' ext-strict';
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}
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bd.addClass(cls);
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});
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/**
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* @class Ext.EventObject
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* EventObject exposes the Yahoo! UI Event functionality directly on the object
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* passed to your event handler. It exists mostly for convenience. It also fixes the annoying null checks automatically to cleanup your code
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* Example:
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* <pre><code>
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function handleClick(e){ // e is not a standard event object, it is a Ext.EventObject
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e.preventDefault();
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var target = e.getTarget();
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...
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}
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var myDiv = Ext.get("myDiv");
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myDiv.on("click", handleClick);
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//or
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Ext.EventManager.on("myDiv", 'click', handleClick);
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Ext.EventManager.addListener("myDiv", 'click', handleClick);
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</code></pre>
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* @singleton
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*/
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Ext.EventObject = function(){
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var E = Ext.lib.Event;
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// safari keypress events for special keys return bad keycodes
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var safariKeys = {
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63234 : 37, // left
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63235 : 39, // right
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63232 : 38, // up
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63233 : 40, // down
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63276 : 33, // page up
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63277 : 34, // page down
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63272 : 46, // delete
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63273 : 36, // home
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63275 : 35 // end
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};
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// normalize button clicks
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var btnMap = Ext.isIE ? {1:0,4:1,2:2} :
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(Ext.isSafari ? {1:0,2:1,3:2} : {0:0,1:1,2:2});
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Ext.EventObjectImpl = function(e){
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if(e){
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this.setEvent(e.browserEvent || e);
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}
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};
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Ext.EventObjectImpl.prototype = {
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/** The normal browser event */
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browserEvent : null,
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/** The button pressed in a mouse event */
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button : -1,
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/** True if the shift key was down during the event */
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shiftKey : false,
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/** True if the control key was down during the event */
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ctrlKey : false,
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/** True if the alt key was down during the event */
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altKey : false,
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/** Key constant @type Number */
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BACKSPACE : 8,
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/** Key constant @type Number */
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TAB : 9,
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/** Key constant @type Number */
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RETURN : 13,
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/** Key constant @type Number */
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ENTER : 13,
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/** Key constant @type Number */
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SHIFT : 16,
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/** Key constant @type Number */
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CONTROL : 17,
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/** Key constant @type Number */
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ESC : 27,
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/** Key constant @type Number */
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SPACE : 32,
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/** Key constant @type Number */
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PAGEUP : 33,
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/** Key constant @type Number */
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PAGEDOWN : 34,
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/** Key constant @type Number */
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END : 35,
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/** Key constant @type Number */
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HOME : 36,
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/** Key constant @type Number */
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LEFT : 37,
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/** Key constant @type Number */
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UP : 38,
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/** Key constant @type Number */
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RIGHT : 39,
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/** Key constant @type Number */
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DOWN : 40,
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/** Key constant @type Number */
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DELETE : 46,
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/** Key constant @type Number */
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F5 : 116,
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/** @private */
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setEvent : function(e){
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if(e == this || (e && e.browserEvent)){ // already wrapped
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return e;
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}
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this.browserEvent = e;
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if(e){
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// normalize buttons
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this.button = e.button ? btnMap[e.button] : (e.which ? e.which-1 : -1);
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this.shiftKey = e.shiftKey;
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// mac metaKey behaves like ctrlKey
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this.ctrlKey = e.ctrlKey || e.metaKey;
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this.altKey = e.altKey;
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// in getKey these will be normalized for the mac
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this.keyCode = e.keyCode;
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this.charCode = e.charCode;
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// cache the target for the delayed and or buffered events
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this.target = E.getTarget(e);
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// same for XY
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this.xy = E.getXY(e);
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}else{
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this.button = -1;
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this.shiftKey = false;
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this.ctrlKey = false;
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this.altKey = false;
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this.keyCode = 0;
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this.charCode =0;
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this.target = null;
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this.xy = [0, 0];
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}
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return this;
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},
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/**
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* Stop the event (preventDefault and stopPropagation)
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*/
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stopEvent : function(){
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if(this.browserEvent){
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if(this.browserEvent.type == 'mousedown'){
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Ext.EventManager.stoppedMouseDownEvent.fire(this);
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}
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E.stopEvent(this.browserEvent);
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}
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},
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/**
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* Prevents the browsers default handling of the event.
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*/
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preventDefault : function(){
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if(this.browserEvent){
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E.preventDefault(this.browserEvent);
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}
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},
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/** @private */
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isNavKeyPress : function(){
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var k = this.keyCode;
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k = Ext.isSafari ? (safariKeys[k] || k) : k;
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return (k >= 33 && k <= 40) || k == this.RETURN || k == this.TAB || k == this.ESC;
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},
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isSpecialKey : function(){
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var k = this.keyCode;
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return k == 9 || k == 13 || k == 40 || k == 27 ||
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(k == 16) || (k == 17) ||
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(k >= 18 && k <= 20) ||
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(k >= 33 && k <= 35) ||
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(k >= 36 && k <= 39) ||
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(k >= 44 && k <= 45);
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},
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/**
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|
* Cancels bubbling of the event.
|
|
*/
|
|
stopPropagation : function(){
|
|
if(this.browserEvent){
|
|
if(this.browserEvent.type == 'mousedown'){
|
|
Ext.EventManager.stoppedMouseDownEvent.fire(this);
|
|
}
|
|
E.stopPropagation(this.browserEvent);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Gets the key code for the event.
|
|
* @return {Number}
|
|
*/
|
|
getCharCode : function(){
|
|
return this.charCode || this.keyCode;
|
|
},
|
|
|
|
/**
|
|
* Returns a normalized keyCode for the event.
|
|
* @return {Number} The key code
|
|
*/
|
|
getKey : function(){
|
|
var k = this.keyCode || this.charCode;
|
|
return Ext.isSafari ? (safariKeys[k] || k) : k;
|
|
},
|
|
|
|
/**
|
|
* Gets the x coordinate of the event.
|
|
* @return {Number}
|
|
*/
|
|
getPageX : function(){
|
|
return this.xy[0];
|
|
},
|
|
|
|
/**
|
|
* Gets the y coordinate of the event.
|
|
* @return {Number}
|
|
*/
|
|
getPageY : function(){
|
|
return this.xy[1];
|
|
},
|
|
|
|
/**
|
|
* Gets the time of the event.
|
|
* @return {Number}
|
|
*/
|
|
getTime : function(){
|
|
if(this.browserEvent){
|
|
return E.getTime(this.browserEvent);
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Gets the page coordinates of the event.
|
|
* @return {Array} The xy values like [x, y]
|
|
*/
|
|
getXY : function(){
|
|
return this.xy;
|
|
},
|
|
|
|
/**
|
|
* Gets the target for the event.
|
|
* @param {String} selector (optional) A simple selector to filter the target or look for an ancestor of the target
|
|
* @param {Number/String/HTMLElement/Element} maxDepth (optional) The max depth to
|
|
search as a number or element (defaults to 10 || document.body)
|
|
* @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node
|
|
* @return {HTMLelement}
|
|
*/
|
|
getTarget : function(selector, maxDepth, returnEl){
|
|
return selector ? Ext.fly(this.target).findParent(selector, maxDepth, returnEl) : this.target;
|
|
},
|
|
/**
|
|
* Gets the related target.
|
|
* @return {HTMLElement}
|
|
*/
|
|
getRelatedTarget : function(){
|
|
if(this.browserEvent){
|
|
return E.getRelatedTarget(this.browserEvent);
|
|
}
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Normalizes mouse wheel delta across browsers
|
|
* @return {Number} The delta
|
|
*/
|
|
getWheelDelta : function(){
|
|
var e = this.browserEvent;
|
|
var delta = 0;
|
|
if(e.wheelDelta){ /* IE/Opera. */
|
|
delta = e.wheelDelta/120;
|
|
/* In Opera 9, delta differs in sign as compared to IE. */
|
|
if(window.opera) delta = -delta;
|
|
}else if(e.detail){ /* Mozilla case. */
|
|
delta = -e.detail/3;
|
|
}
|
|
return delta;
|
|
},
|
|
|
|
/**
|
|
* Returns true if the control, meta, shift or alt key was pressed during this event.
|
|
* @return {Boolean}
|
|
*/
|
|
hasModifier : function(){
|
|
return ((this.ctrlKey || this.altKey) || this.shiftKey) ? true : false;
|
|
},
|
|
|
|
/**
|
|
* Returns true if the target of this event equals el or is a child of el
|
|
* @param {String/HTMLElement/Element} el
|
|
* @param {Boolean} related (optional) true to test if the related target is within el instead of the target
|
|
* @return {Boolean}
|
|
*/
|
|
within : function(el, related){
|
|
var t = this[related ? "getRelatedTarget" : "getTarget"]();
|
|
return t && Ext.fly(el).contains(t);
|
|
},
|
|
|
|
getPoint : function(){
|
|
return new Ext.lib.Point(this.xy[0], this.xy[1]);
|
|
}
|
|
};
|
|
|
|
return new Ext.EventObjectImpl();
|
|
}();
|
|
|
|
|