decorator.js

原名JSPackager

/**
 * 装饰器基类
 * @public
 * @param <HTMLElement> ele HTML元素.如 &lt;d:code language='JScript'&gt;....&lt;/d:code&gt;
 */
function Decorator(ele){
}
Decorator.prototype.parent = null;
Decorator.prototype.children = null;

Decorator.prototype.getContainer = function(){
  return document.getElementById(this.id);
}
Decorator.prototype.before = function(){
  //$JSI.addComponent(this.id,this);
}
Decorator.prototype.decorate = function(){
}
Decorator.prototype.dispose = function(){
}


//判断是否需要装饰该网页
var declared = null;
var ua = navigator.userAgent;
var dns = "http://www.xidea.org/taglib/decorator";
function detectFromAttribute(){
  var ns = document.documentElement.getAttribute("xmlns:d");
  if(ns){
    if(ns == dns){
      return true;
    }else{
      $log.info("发现Decorator保留前缀d被占用",ns);
      return false;
    }
  }else{
    return false;
  }
}
function detectFromOuterHTML(){
  var str = document.documentElement.outerHTML;
  //str = str.substring(5,str.indexOf('>'));
  //\s*(('[^']')|("[^"]")|([^'"\r\n]*))
  //var p = /xmlns(\:)?\s*=?/g;//需要兼容ie5正则表达式
  return str.indexOf(dns)>0;
}
if(ua.indexOf(" MSIE ")>0){//for ie and opera
  var ns = document.namespaces;
  if(ns){//for ie 5.5+ 
    declared = false;
    for(var i = ns.length-1;i>=0;i--){
      if(ns.item(i).name.toLowerCase() == 'd'){
        if(ns.item(i).urn == dns){
          declared = true;
        }else{
          $log.info("发现Decorator保留前缀d被占用",ns.item(i).urn);
        }
        break;
      }
    }
  }else{//for ie5 or opera
    declared = detectFromOuterHTML();
  }
  if(declared && ua.indexOf(" Opera ")<0){
    document.write("<style>d\\:*{behavior:url("+$package.scriptBase+"decorator.htc)}</style>");
  }
}else if(ua.indexOf("Gecko/") > 0){//all? not sure!!!
  declared = detectFromAttribute();
}else if(detectFromAttribute()){
  declared = true;
}else if(document.documentElement.outerHTML){
  declared = detectFromOuterHTML();
}else{
  declared = null;
}
//$JSI.setAttribute("decoratorDeclared",declared);
/**
 * 是否申明了装饰用的名称空间
 * xmlns:d = "http://www.xidea.org/taglib/decorator" 
 * @public
 * @readonly
 */
Decorator.declared = declared;