[Sommaire] [Imprimer]

   1  // script.aculo.us builder.js v1.6.4, Wed Sep 06 11:30:58 CEST 2006
   2  
   3  // Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
   4  //
   5  // See scriptaculous.js for full license.
   6  
   7  var Builder = {
   8    NODEMAP: {
   9      AREA: 'map',
  10      CAPTION: 'table',
  11      COL: 'table',
  12      COLGROUP: 'table',
  13      LEGEND: 'fieldset',
  14      OPTGROUP: 'select',
  15      OPTION: 'select',
  16      PARAM: 'object',
  17      TBODY: 'table',
  18      TD: 'table',
  19      TFOOT: 'table',
  20      TH: 'table',
  21      THEAD: 'table',
  22      TR: 'table'
  23    },
  24    // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
  25    //       due to a Firefox bug
  26    node: function(elementName) {
  27      elementName = elementName.toUpperCase();
  28      
  29      // try innerHTML approach
  30      var parentTag = this.NODEMAP[elementName] || 'div';
  31      var parentElement = document.createElement(parentTag);
  32      try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
  33        parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
  34      } catch(e) {}
  35      var element = parentElement.firstChild || null;
  36        
  37      // see if browser added wrapping tags
  38      if(element && (element.tagName != elementName))
  39        element = element.getElementsByTagName(elementName)[0];
  40      
  41      // fallback to createElement approach
  42      if(!element) element = document.createElement(elementName);
  43      
  44      // abort if nothing could be created
  45      if(!element) return;
  46  
  47      // attributes (or text)
  48      if(arguments[1])
  49        if(this._isStringOrNumber(arguments[1]) ||
  50          (arguments[1] instanceof Array)) {
  51            this._children(element, arguments[1]);
  52          } else {
  53            var attrs = this._attributes(arguments[1]);
  54            if(attrs.length) {
  55              try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
  56                parentElement.innerHTML = "<" +elementName + " " +
  57                  attrs + "></" + elementName + ">";
  58              } catch(e) {}
  59              element = parentElement.firstChild || null;
  60              // workaround firefox 1.0.X bug
  61              if(!element) {
  62                element = document.createElement(elementName);
  63                for(attr in arguments[1]) 
  64                  element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
  65              }
  66              if(element.tagName != elementName)
  67                element = parentElement.getElementsByTagName(elementName)[0];
  68              }
  69          } 
  70  
  71      // text, or array of children
  72      if(arguments[2])
  73        this._children(element, arguments[2]);
  74  
  75       return element;
  76    },
  77    _text: function(text) {
  78       return document.createTextNode(text);
  79    },
  80    _attributes: function(attributes) {
  81      var attrs = [];
  82      for(attribute in attributes)
  83        attrs.push((attribute=='className' ? 'class' : attribute) +
  84            '="' + attributes[attribute].toString().escapeHTML() + '"');
  85      return attrs.join(" ");
  86    },
  87    _children: function(element, children) {
  88      if(typeof children=='object') { // array can hold nodes and text
  89        children.flatten().each( function(e) {
  90          if(typeof e=='object')
  91            element.appendChild(e)
  92          else
  93            if(Builder._isStringOrNumber(e))
  94              element.appendChild(Builder._text(e));
  95        });
  96      } else
  97        if(Builder._isStringOrNumber(children)) 
  98           element.appendChild(Builder._text(children));
  99    },
 100    _isStringOrNumber: function(param) {
 101      return(typeof param=='string' || typeof param=='number');
 102    },
 103    dump: function(scope) { 
 104      if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
 105    
 106      var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
 107        "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
 108        "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
 109        "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
 110        "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
 111        "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
 112    
 113      tags.each( function(tag){ 
 114        scope[tag] = function() { 
 115          return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
 116        } 
 117      });
 118    }
 119  }