docs/source/Column3.html

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  18   <pre class="prettyprint lang-js"><span id='Ext-tree-Column'>/**
  19 </span> * @class Ext.tree.Column
  20  * @extends Ext.grid.column.Column
  21  *
  22  * Provides indentation and folder structure markup for a Tree taking into account
  23  * depth and position within the tree hierarchy.
  24  *
  25  * @private
  26  */
  27 Ext.define('Ext.tree.Column', {
  28     extend: 'Ext.grid.column.Column',
  29     alias: 'widget.treecolumn',
  30
  31     initComponent: function() {
  32         var origRenderer = this.renderer || this.defaultRenderer,
  33             origScope    = this.scope || window;
  34
  35         this.renderer = function(value, metaData, record, rowIdx, colIdx, store, view) {
  36             var buf   = [],
  37                 format = Ext.String.format,
  38                 depth = record.getDepth(),
  39                 treePrefix  = Ext.baseCSSPrefix + 'tree-',
  40                 elbowPrefix = treePrefix + 'elbow-',
  41                 expanderCls = treePrefix + 'expander',
  42                 imgText     = '&lt;img src=&quot;{1}&quot; class=&quot;{0}&quot; /&gt;',
  43                 checkboxText= '&lt;input type=&quot;button&quot; role=&quot;checkbox&quot; class=&quot;{0}&quot; {1} /&gt;',
  44                 formattedValue = origRenderer.apply(origScope, arguments),
  45                 href = record.get('href'),
  46                 target = record.get('hrefTarget'),
  47                 cls = record.get('cls');
  48
  49             while (record) {
  50                 if (!record.isRoot() || (record.isRoot() &amp;&amp; view.rootVisible)) {
  51                     if (record.getDepth() === depth) {
  52                         buf.unshift(format(imgText,
  53                             treePrefix + 'icon ' +
  54                             treePrefix + 'icon' + (record.get('icon') ? '-inline ' : (record.isLeaf() ? '-leaf ' : '-parent ')) +
  55                             (record.get('iconCls') || ''),
  56                             record.get('icon') || Ext.BLANK_IMAGE_URL
  57                         ));
  58                         if (record.get('checked') !== null) {
  59                             buf.unshift(format(
  60                                 checkboxText,
  61                                 (treePrefix + 'checkbox') + (record.get('checked') ? ' ' + treePrefix + 'checkbox-checked' : ''),
  62                                 record.get('checked') ? 'aria-checked=&quot;true&quot;' : ''
  63                             ));
  64                             if (record.get('checked')) {
  65                                 metaData.tdCls += (' ' + treePrefix + 'checked');
  66                             }
  67                         }
  68                         if (record.isLast()) {
  69                             if (record.isExpandable()) {
  70                                 buf.unshift(format(imgText, (elbowPrefix + 'end-plus ' + expanderCls), Ext.BLANK_IMAGE_URL));
  71                             } else {
  72                                 buf.unshift(format(imgText, (elbowPrefix + 'end'), Ext.BLANK_IMAGE_URL));
  73                             }
  74
  75                         } else {
  76                             if (record.isExpandable()) {
  77                                 buf.unshift(format(imgText, (elbowPrefix + 'plus ' + expanderCls), Ext.BLANK_IMAGE_URL));
  78                             } else {
  79                                 buf.unshift(format(imgText, (treePrefix + 'elbow'), Ext.BLANK_IMAGE_URL));
  80                             }
  81                         }
  82                     } else {
  83                         if (record.isLast() || record.getDepth() === 0) {
  84                             buf.unshift(format(imgText, (elbowPrefix + 'empty'), Ext.BLANK_IMAGE_URL));
  85                         } else if (record.getDepth() !== 0) {
  86                             buf.unshift(format(imgText, (elbowPrefix + 'line'), Ext.BLANK_IMAGE_URL));
  87                         }
  88                     }
  89                 }
  90                 record = record.parentNode;
  91             }
  92             if (href) {
  93                 buf.push('&lt;a href=&quot;', href, '&quot; target=&quot;', target, '&quot;&gt;', formattedValue, '&lt;/a&gt;');
  94             } else {
  95                 buf.push(formattedValue);
  96             }
  97             if (cls) {
  98                 metaData.tdCls += ' ' + cls;
  99             }
 100             return buf.join('');
 101         };
 102         this.callParent(arguments);
 103     },
 104
 105     defaultRenderer: function(value) {
 106         return value;
 107     }
 108 });</pre>
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