Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / layout / component / field / TextArea.js

diff --git a/src/layout/component/field/TextArea.js b/src/layout/component/field/TextArea.js
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+++ b/src/layout/component/field/TextArea.js
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+/**
+ * @private
+ * @class Ext.layout.component.field.TextArea
+ * @extends Ext.layout.component.field.Field
+ * Layout class for {@link Ext.form.field.TextArea} fields. Handles sizing the textarea field.
+ */
+Ext.define('Ext.layout.component.field.TextArea', {
+    extend: 'Ext.layout.component.field.Text',
+    alias: 'layout.textareafield',
+
+    type: 'textareafield',
+
+
+    /**
+     * Given the target bodyEl dimensions, adjust them if necessary to return the correct final
+     * size based on the text field's {@link Ext.form.field.Text#grow grow config}. Overrides the
+     * textfield layout's implementation to handle height rather than width.
+     * @param {Number} width The bodyEl width
+     * @param {Number} height The bodyEl height
+     * @return {Array} [inputElWidth, inputElHeight]
+     */
+    adjustForGrow: function(width, height) {
+        var me = this,
+            owner = me.owner,
+            inputEl, value, max,
+            curWidth, curHeight, calcHeight,
+            result = [width, height];
+
+        if (owner.grow) {
+            inputEl = owner.inputEl;
+            curWidth = inputEl.getWidth(true); //subtract border/padding to get the available width for the text
+            curHeight = inputEl.getHeight();
+
+            // Get and normalize the field value for measurement
+            value = inputEl.dom.value || ' ';
+            value += owner.growAppend;
+
+            // Translate newlines to <br> tags
+            value = value.replace(/\n/g, '<br>');
+
+            // Find the height that contains the whole text value
+            calcHeight = Ext.util.TextMetrics.measure(inputEl, value, curWidth).height +
+                         inputEl.getBorderWidth("tb") + inputEl.getPadding("tb");
+
+            // Constrain
+            max = owner.growMax;
+            if (Ext.isNumber(height)) {
+                max = Math.min(max, height);
+            }
+            result[1] = Ext.Number.constrain(calcHeight, owner.growMin, max);
+        }
+
+        return result;
+    }
+
+});
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