observable-min.js

ext-2.3.0

/*
 * Ext JS Library 2.3.0
 * Copyright(c) 2006-2009, Ext JS, LLC.
 * [e-mail]
 * 
 * http://extjs.com/license
 */


Ext.util.Observable=function(){if(this.listeners){this.on(this.listeners);delete this.listeners;}};Ext.util.Observable.prototype={fireEvent:function(){if(this.eventsSuspended!==true){var ce=this.events[arguments[0].toLowerCase()];if(typeof ce=="object"){return ce.fire.apply(ce,Array.prototype.slice.call(arguments,1));}}
return true;},filterOptRe:/^(?:scope|delay|buffer|single)$/,addListener:function(eventName,fn,scope,o){if(typeof eventName=="object"){o=eventName;for(var e in o){if(this.filterOptRe.test(e)){continue;}
if(typeof o[e]=="function"){this.addListener(e,o[e],o.scope,o);}else{this.addListener(e,o[e].fn,o[e].scope,o[e]);}}
return;}
o=(!o||typeof o=="boolean")?{}:o;eventName=eventName.toLowerCase();var ce=this.events[eventName]||true;if(typeof ce=="boolean"){ce=new Ext.util.Event(this,eventName);this.events[eventName]=ce;}
ce.addListener(fn,scope,o);},removeListener:function(eventName,fn,scope){var ce=this.events[eventName.toLowerCase()];if(typeof ce=="object"){ce.removeListener(fn,scope);}},purgeListeners:function(){for(var evt in this.events){if(typeof this.events[evt]=="object"){this.events[evt].clearListeners();}}},relayEvents:function(o,events){var createHandler=function(ename){return function(){return this.fireEvent.apply(this,Ext.combine(ename,Array.prototype.slice.call(arguments,0)));};};for(var i=0,len=events.length;i<len;i++){var ename=events[i];if(!this.events[ename]){this.events[ename]=true;};o.on(ename,createHandler(ename),this);}},addEvents:function(o){if(!this.events){this.events={};}
if(typeof o=='string'){for(var i=0,a=arguments,v;v=a[i];i++){if(!this.events[a[i]]){this.events[a[i]]=true;}}}else{Ext.applyIf(this.events,o);}},hasListener:function(eventName){var e=this.events[eventName];return typeof e=="object"&&e.listeners.length>0;},suspendEvents:function(){this.eventsSuspended=true;},resumeEvents:function(){this.eventsSuspended=false;},getMethodEvent:function(method){if(!this.methodEvents){this.methodEvents={};}
var e=this.methodEvents[method];if(!e){e={};this.methodEvents[method]=e;e.originalFn=this[method];e.methodName=method;e.before=[];e.after=[];var returnValue,v,cancel;var obj=this;var makeCall=function(fn,scope,args){if((v=fn.apply(scope||obj,args))!==undefined){if(typeof v==='object'){if(v.returnValue!==undefined){returnValue=v.returnValue;}else{returnValue=v;}
if(v.cancel===true){cancel=true;}}else if(v===false){cancel=true;}else{returnValue=v;}}}
this[method]=function(){returnValue=v=undefined;cancel=false;var args=Array.prototype.slice.call(arguments,0);for(var i=0,len=e.before.length;i<len;i++){makeCall(e.before[i].fn,e.before[i].scope,args);if(cancel){return returnValue;}}
if((v=e.originalFn.apply(obj,args))!==undefined){returnValue=v;}
for(var i=0,len=e.after.length;i<len;i++){makeCall(e.after[i].fn,e.after[i].scope,args);if(cancel){return returnValue;}}
return returnValue;};}
return e;},beforeMethod:function(method,fn,scope){var e=this.getMethodEvent(method);e.before.push({fn:fn,scope:scope});},afterMethod:function(method,fn,scope){var e=this.getMethodEvent(method);e.after.push({fn:fn,scope:scope});},removeMethodListener:function(method,fn,scope){var e=this.getMethodEvent(method);for(var i=0,len=e.before.length;i<len;i++){if(e.before[i].fn==fn&&e.before[i].scope==scope){e.before.splice(i,1);return;}}
for(var i=0,len=e.after.length;i<len;i++){if(e.after[i].fn==fn&&e.after[i].scope==scope){e.after.splice(i,1);return;}}}};Ext.util.Observable.prototype.on=Ext.util.Observable.prototype.addListener;Ext.util.Observable.prototype.un=Ext.util.Observable.prototype.removeListener;Ext.util.Observable.capture=function(o,fn,scope){o.fireEvent=o.fireEvent.createInterceptor(fn,scope);};Ext.util.Observable.releaseCapture=function(o){o.fireEvent=Ext.util.Observable.prototype.fireEvent;};(function(){var createBuffered=function(h,o,scope){var task=new Ext.util.DelayedTask();return function(){task.delay(o.buffer,h,scope,Array.prototype.slice.call(arguments,0));};};var createSingle=function(h,e,fn,scope){return function(){e.removeListener(fn,scope);return h.apply(scope,arguments);};};var createDelayed=function(h,o,scope){return function(){var args=Array.prototype.slice.call(arguments,0);setTimeout(function(){h.apply(scope,args);},o.delay||10);};};Ext.util.Event=function(obj,name){this.name=name;this.obj=obj;this.listeners=[];};Ext.util.Event.prototype={addListener:function(fn,scope,options){scope=scope||this.obj;if(!this.isListening(fn,scope)){var l=this.createListener(fn,scope,options);if(!this.firing){this.listeners.push(l);}else{this.listeners=this.listeners.slice(0);this.listeners.push(l);}}},createListener:function(fn,scope,o){o=o||{};scope=scope||this.obj;var l={fn:fn,scope:scope,options:o};var h=fn;if(o.delay){h=createDelayed(h,o,scope);}
if(o.single){h=createSingle(h,this,fn,scope);}
if(o.buffer){h=createBuffered(h,o,scope);}
l.fireFn=h;return l;},findListener:function(fn,scope){scope=scope||this.obj;var ls=this.listeners;for(var i=0,len=ls.length;i<len;i++){var l=ls[i];if(l.fn==fn&&l.scope==scope){return i;}}
return-1;},isListening:function(fn,scope){return this.findListener(fn,scope)!=-1;},removeListener:function(fn,scope){var index;if((index=this.findListener(fn,scope))!=-1){if(!this.firing){this.listeners.splice(index,1);}else{this.listeners=this.listeners.slice(0);this.listeners.splice(index,1);}
return true;}
return false;},clearListeners:function(){this.listeners=[];},fire:function(){var ls=this.listeners,scope,len=ls.length;if(len>0){this.firing=true;var args=Array.prototype.slice.call(arguments,0);for(var i=0;i<len;i++){var l=ls[i];if(l.fireFn.apply(l.scope||this.obj||window,arguments)===false){this.firing=false;return false;}}
this.firing=false;}
return true;}};})();