1 // script.aculo.us builder.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007

     2 

     3 // Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)

     4 //

     5 // script.aculo.us is freely distributable under the terms of an MIT-style license.

     6 // For details, see the script.aculo.us web site: http://script.aculo.us/

     7 

     8 var Builder = {

     9   NODEMAP: {

    10     AREA: 'map',

    11     CAPTION: 'table',

    12     COL: 'table',

    13     COLGROUP: 'table',

    14     LEGEND: 'fieldset',

    15     OPTGROUP: 'select',

    16     OPTION: 'select',

    17     PARAM: 'object',

    18     TBODY: 'table',

    19     TD: 'table',

    20     TFOOT: 'table',

    21     TH: 'table',

    22     THEAD: 'table',

    23     TR: 'table'

    24   },

    25   // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,

    26   //       due to a Firefox bug

    27   node: function(elementName) {

    28     elementName = elementName.toUpperCase();

    29     

    30     // try innerHTML approach

    31     var parentTag = this.NODEMAP[elementName] || 'div';

    32     var parentElement = document.createElement(parentTag);

    33     try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707

    34       parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";

    35     } catch(e) {}

    36     var element = parentElement.firstChild || null;

    37       

    38     // see if browser added wrapping tags

    39     if(element && (element.tagName.toUpperCase() != elementName))

    40       element = element.getElementsByTagName(elementName)[0];

    41     

    42     // fallback to createElement approach

    43     if(!element) element = document.createElement(elementName);

    44     

    45     // abort if nothing could be created

    46     if(!element) return;

    47 

    48     // attributes (or text)

    49     if(arguments[1])

    50       if(this._isStringOrNumber(arguments[1]) ||

    51         (arguments[1] instanceof Array) ||

    52         arguments[1].tagName) {

    53           this._children(element, arguments[1]);

    54         } else {

    55           var attrs = this._attributes(arguments[1]);

    56           if(attrs.length) {

    57             try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707

    58               parentElement.innerHTML = "<" +elementName + " " +

    59                 attrs + "></" + elementName + ">";

    60             } catch(e) {}

    61             element = parentElement.firstChild || null;

    62             // workaround firefox 1.0.X bug

    63             if(!element) {

    64               element = document.createElement(elementName);

    65               for(attr in arguments[1]) 

    66                 element[attr == 'class' ? 'className' : attr] = arguments[1][attr];

    67             }

    68             if(element.tagName.toUpperCase() != elementName)

    69               element = parentElement.getElementsByTagName(elementName)[0];

    70           }

    71         } 

    72 

    73     // text, or array of children

    74     if(arguments[2])

    75       this._children(element, arguments[2]);

    76 

    77      return element;

    78   },

    79   _text: function(text) {

    80      return document.createTextNode(text);

    81   },

    82 

    83   ATTR_MAP: {

    84     'className': 'class',

    85     'htmlFor': 'for'

    86   },

    87 

    88   _attributes: function(attributes) {

    89     var attrs = [];

    90     for(attribute in attributes)

    91       attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +

    92           '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'"') + '"');

    93     return attrs.join(" ");

    94   },

    95   _children: function(element, children) {

    96     if(children.tagName) {

    97       element.appendChild(children);

    98       return;

    99     }

   100     if(typeof children=='object') { // array can hold nodes and text

   101       children.flatten().each( function(e) {

   102         if(typeof e=='object')

   103           element.appendChild(e)

   104         else

   105           if(Builder._isStringOrNumber(e))

   106             element.appendChild(Builder._text(e));

   107       });

   108     } else

   109       if(Builder._isStringOrNumber(children))

   110         element.appendChild(Builder._text(children));

   111   },

   112   _isStringOrNumber: function(param) {

   113     return(typeof param=='string' || typeof param=='number');

   114   },

   115   build: function(html) {

   116     var element = this.node('div');

   117     $(element).update(html.strip());

   118     return element.down();

   119   },

   120   dump: function(scope) { 

   121     if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 

   122   

   123     var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +

   124       "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +

   125       "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+

   126       "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+

   127       "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+

   128       "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);

   129   

   130     tags.each( function(tag){ 

   131       scope[tag] = function() { 

   132         return Builder.node.apply(Builder, [tag].concat($A(arguments)));  

   133       } 

   134     });

   135   }

   136 }