docs/source/TextArea2.html

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  18   <pre class="prettyprint lang-js"><span id='Ext-layout-component-field-TextArea'>/**
  19 </span> * @private
  20  * @class Ext.layout.component.field.TextArea
  21  * @extends Ext.layout.component.field.Field
  22  * Layout class for {@link Ext.form.field.TextArea} fields. Handles sizing the textarea field.
  23  */
  24 Ext.define('Ext.layout.component.field.TextArea', {
  25     extend: 'Ext.layout.component.field.Text',
  26     alias: 'layout.textareafield',
  27
  28     type: 'textareafield',
  29
  30
  31 <span id='Ext-layout-component-field-TextArea-method-adjustForGrow'>    /**
  32 </span>     * Given the target bodyEl dimensions, adjust them if necessary to return the correct final
  33      * size based on the text field's {@link Ext.form.field.Text#grow grow config}. Overrides the
  34      * textfield layout's implementation to handle height rather than width.
  35      * @param {Number} width The bodyEl width
  36      * @param {Number} height The bodyEl height
  37      * @return {Array} [inputElWidth, inputElHeight]
  38      */
  39     adjustForGrow: function(width, height) {
  40         var me = this,
  41             owner = me.owner,
  42             inputEl, value, max,
  43             curWidth, curHeight, calcHeight,
  44             result = [width, height];
  45
  46         if (owner.grow) {
  47             inputEl = owner.inputEl;
  48             curWidth = inputEl.getWidth(true); //subtract border/padding to get the available width for the text
  49             curHeight = inputEl.getHeight();
  50
  51             // Get and normalize the field value for measurement
  52             value = inputEl.dom.value || '&amp;#160;';
  53             value += owner.growAppend;
  54
  55             // Translate newlines to &lt;br&gt; tags
  56             value = value.replace(/\n/g, '&lt;br&gt;');
  57
  58             // Find the height that contains the whole text value
  59             calcHeight = Ext.util.TextMetrics.measure(inputEl, value, curWidth).height +
  60                          inputEl.getBorderWidth(&quot;tb&quot;) + inputEl.getPadding(&quot;tb&quot;);
  61
  62             // Constrain
  63             max = owner.growMax;
  64             if (Ext.isNumber(height)) {
  65                 max = Math.min(max, height);
  66             }
  67             result[1] = Ext.Number.constrain(calcHeight, owner.growMin, max);
  68         }
  69
  70         return result;
  71     }
  72
  73 });</pre>
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