terom@27: // script.aculo.us builder.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007
terom@27: 
terom@27: // Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
terom@27: //
terom@27: // script.aculo.us is freely distributable under the terms of an MIT-style license.
terom@27: // For details, see the script.aculo.us web site: http://script.aculo.us/
terom@27: 
terom@27: var Builder = {
terom@27:   NODEMAP: {
terom@27:     AREA: 'map',
terom@27:     CAPTION: 'table',
terom@27:     COL: 'table',
terom@27:     COLGROUP: 'table',
terom@27:     LEGEND: 'fieldset',
terom@27:     OPTGROUP: 'select',
terom@27:     OPTION: 'select',
terom@27:     PARAM: 'object',
terom@27:     TBODY: 'table',
terom@27:     TD: 'table',
terom@27:     TFOOT: 'table',
terom@27:     TH: 'table',
terom@27:     THEAD: 'table',
terom@27:     TR: 'table'
terom@27:   },
terom@27:   // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
terom@27:   //       due to a Firefox bug
terom@27:   node: function(elementName) {
terom@27:     elementName = elementName.toUpperCase();
terom@27:     
terom@27:     // try innerHTML approach
terom@27:     var parentTag = this.NODEMAP[elementName] || 'div';
terom@27:     var parentElement = document.createElement(parentTag);
terom@27:     try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
terom@27:       parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
terom@27:     } catch(e) {}
terom@27:     var element = parentElement.firstChild || null;
terom@27:       
terom@27:     // see if browser added wrapping tags
terom@27:     if(element && (element.tagName.toUpperCase() != elementName))
terom@27:       element = element.getElementsByTagName(elementName)[0];
terom@27:     
terom@27:     // fallback to createElement approach
terom@27:     if(!element) element = document.createElement(elementName);
terom@27:     
terom@27:     // abort if nothing could be created
terom@27:     if(!element) return;
terom@27: 
terom@27:     // attributes (or text)
terom@27:     if(arguments[1])
terom@27:       if(this._isStringOrNumber(arguments[1]) ||
terom@27:         (arguments[1] instanceof Array) ||
terom@27:         arguments[1].tagName) {
terom@27:           this._children(element, arguments[1]);
terom@27:         } else {
terom@27:           var attrs = this._attributes(arguments[1]);
terom@27:           if(attrs.length) {
terom@27:             try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
terom@27:               parentElement.innerHTML = "<" +elementName + " " +
terom@27:                 attrs + "></" + elementName + ">";
terom@27:             } catch(e) {}
terom@27:             element = parentElement.firstChild || null;
terom@27:             // workaround firefox 1.0.X bug
terom@27:             if(!element) {
terom@27:               element = document.createElement(elementName);
terom@27:               for(attr in arguments[1]) 
terom@27:                 element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
terom@27:             }
terom@27:             if(element.tagName.toUpperCase() != elementName)
terom@27:               element = parentElement.getElementsByTagName(elementName)[0];
terom@27:           }
terom@27:         } 
terom@27: 
terom@27:     // text, or array of children
terom@27:     if(arguments[2])
terom@27:       this._children(element, arguments[2]);
terom@27: 
terom@27:      return element;
terom@27:   },
terom@27:   _text: function(text) {
terom@27:      return document.createTextNode(text);
terom@27:   },
terom@27: 
terom@27:   ATTR_MAP: {
terom@27:     'className': 'class',
terom@27:     'htmlFor': 'for'
terom@27:   },
terom@27: 
terom@27:   _attributes: function(attributes) {
terom@27:     var attrs = [];
terom@27:     for(attribute in attributes)
terom@27:       attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
terom@27:           '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
terom@27:     return attrs.join(" ");
terom@27:   },
terom@27:   _children: function(element, children) {
terom@27:     if(children.tagName) {
terom@27:       element.appendChild(children);
terom@27:       return;
terom@27:     }
terom@27:     if(typeof children=='object') { // array can hold nodes and text
terom@27:       children.flatten().each( function(e) {
terom@27:         if(typeof e=='object')
terom@27:           element.appendChild(e)
terom@27:         else
terom@27:           if(Builder._isStringOrNumber(e))
terom@27:             element.appendChild(Builder._text(e));
terom@27:       });
terom@27:     } else
terom@27:       if(Builder._isStringOrNumber(children))
terom@27:         element.appendChild(Builder._text(children));
terom@27:   },
terom@27:   _isStringOrNumber: function(param) {
terom@27:     return(typeof param=='string' || typeof param=='number');
terom@27:   },
terom@27:   build: function(html) {
terom@27:     var element = this.node('div');
terom@27:     $(element).update(html.strip());
terom@27:     return element.down();
terom@27:   },
terom@27:   dump: function(scope) { 
terom@27:     if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
terom@27:   
terom@27:     var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
terom@27:       "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
terom@27:       "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
terom@27:       "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
terom@27:       "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
terom@27:       "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
terom@27:   
terom@27:     tags.each( function(tag){ 
terom@27:       scope[tag] = function() { 
terom@27:         return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
terom@27:       } 
terom@27:     });
terom@27:   }
terom@27: }