keyboard.js

来自「Hippo CMS是一个以信息为中心的开源内容管理系统。Hippo CMS目标是」· JavaScript 代码 · 共 99 行

/*
* Copyright 2001-2007 Hippo (www.hippo.nl)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var EVENT_KEYPRESS = 'keypress';
InputEventHandler = Class.create();
InputEventHandler.prototype = {
initialize: function(handlerWrapper){
  this.globalListeners = new Array();
  this.addGlobalKeyBoardEventListener(handlerWrapper);
  this.propagateHandlers(window.top.frames);         
},
  addGlobalKeyBoardEventListener : function(handlerWrapper){
    var newFunc = function(event){
      handlerWrapper.handleInputEvent(event);
    }
    this.globalListeners.push(newFunc);
    if (navigator.appName.match(/Microsoft/)){
       this.attachEventTo(window.top.document.body,EVENT_KEYPRESS,newFunc);
    } if (navigator.appName.match(/Netscape/)){
      this.attachEventTo(window.top.document,EVENT_KEYPRESS,newFunc);
    }
  },
  attachEventTo : function(object,eventType,handler){
    Event.observe(object,eventType,handler,true);
  },
  addGlobalPropagationHandlers : function(){
    this.propagateHandlers(window.top);
  },
  passGlobalEvent: function(event){
    var i;
    for (i=0; i<this.globalListeners.length; i++){
      this.globalListeners[i](event);
    }
  },
  propagateHandlers : function(framesArray){
      var i;
      var j;
      var frames; 
      var doc;
      var thisObj = this;
      var func = 
            function(event){
              thisObj.passGlobalEvent(event);
            };

      if (framesArray.length > 0 ){
          var i;
          
          for (i=0; i < framesArray.length; i++){
            if (framesArray[i].relayHandler == null){
              try{                  
                  if (navigator.appName.match(/Microsoft/)){
                     this.attachEventTo(framesArray[i].document.body,EVENT_KEYPRESS,func);
                  } if (navigator.appName.match(/Netscape/)){
                    this.attachEventTo(framesArray[i].document,EVENT_KEYPRESS,func);
                  }
              } catch(e){                    
              }
              framesArray[i].relayHandler = func;
            }
            
            try{
              if (navigator.appName.match(/Microsoft/)){
                if (framesArray[i].contentWindow)
                  doc = framesArray[i].contentDocument;
                else
                if (framesArray[i].contentDocument) alert('sup');
              } if (navigator.appName.match(/Netscape/)){
                doc = framesArray[i].document;
              }
             // alert(doc);
              frames = doc.getElementsByTagName('iframe');
              frames=$A(frames);
              if (frames && frames.length > 0){
                
                this.propagateHandlers(frames);
              }
            } catch(e){}
         } 
      }
      }
}

function createHandler(){
   window.top.document.globalInputEventHandler = new InputEventHandler();
}