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/ShowMeTheBestReply/web-app/js/prototype/builder.js

http://showmethebestreply.googlecode.com/
JavaScript | 136 lines | 111 code | 11 blank | 14 comment | 19 complexity | 92cc9bddf6afcff5e641eeba9e3eacc0 MD5 | raw file
  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
  8var 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(/"/,'&quot;') + '"');
 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}