Upgrade to ExtJS 4.0.0 - Released 04/26/2011

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

diff --git a/src/layout/component/field/Text.js b/src/layout/component/field/Text.js
new file mode 100644 (file)
index 0000000..898d631
--- /dev/null
+++ b/src/layout/component/field/Text.js
@@ -0,0 +1,69 @@
+/**
+ * @private
+ * @class Ext.layout.component.field.Text
+ * @extends Ext.layout.component.field.Field
+ * Layout class for {@link Ext.form.field.Text} fields. Handles sizing the input field.
+ */
+Ext.define('Ext.layout.component.field.Text', {
+    extend: 'Ext.layout.component.field.Field',
+    alias: 'layout.textfield',
+    requires: ['Ext.util.TextMetrics'],
+
+    type: 'textfield',
+
+
+    /**
+     * Allow layout to proceed if the {@link Ext.form.field.Text#grow} config is enabled and the value has
+     * changed since the last layout.
+     */
+    beforeLayout: function(width, height) {
+        var me = this,
+            owner = me.owner,
+            lastValue = this.lastValue,
+            value = owner.getRawValue();
+        this.lastValue = value;
+        return me.callParent(arguments) || (owner.grow && value !== lastValue);
+    },
+
+
+    /**
+     * Size the field body contents given the total dimensions of the bodyEl, taking into account the optional
+     * {@link Ext.form.field.Text#grow} configurations.
+     * @param {Number} width The bodyEl width
+     * @param {Number} height The bodyEl height
+     */
+    sizeBodyContents: function(width, height) {
+        var size = this.adjustForGrow(width, height);
+        this.setElementSize(this.owner.inputEl, size[0], size[1]);
+    },
+
+
+    /**
+     * 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}.
+     * @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, calcWidth,
+            result = [width, height];
+
+        if (owner.grow) {
+            inputEl = owner.inputEl;
+
+            // Find the width that contains the whole text value
+            value = (inputEl.dom.value || (owner.hasFocus ? '' : owner.emptyText) || '') + owner.growAppend;
+            calcWidth = inputEl.getTextWidth(value) + inputEl.getBorderWidth("lr") + inputEl.getPadding("lr");
+
+            // Constrain
+            result[0] = Ext.Number.constrain(calcWidth, owner.growMin,
+                    Math.max(owner.growMin, Math.min(owner.growMax, Ext.isNumber(width) ? width : Infinity)));
+        }
+
+        return result;
+    }
+
+});