Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / layout / container / Auto.js

diff --git a/src/layout/container/Auto.js b/src/layout/container/Auto.js
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+/**
+ * @class Ext.layout.container.Auto
+ * @extends Ext.layout.container.Container
+ *
+ * <p>The AutoLayout is the default layout manager delegated by {@link Ext.container.Container} to
+ * render any child Components when no <tt>{@link Ext.container.Container#layout layout}</tt> is configured into
+ * a <tt>{@link Ext.container.Container Container}.</tt>.  AutoLayout provides only a passthrough of any layout calls
+ * to any child containers.</p>
+ * {@img Ext.layout.container.Auto/Ext.layout.container.Auto.png Ext.layout.container.Auto container layout}
+ * Example usage:
+       Ext.create('Ext.Panel', {
+               width: 500,
+               height: 280,
+               title: "AutoLayout Panel",
+               layout: 'auto',
+               renderTo: document.body,
+               items: [{
+                       xtype: 'panel',
+                       title: 'Top Inner Panel',
+                       width: '75%',
+                       height: 90
+               },{
+                       xtype: 'panel',
+                       title: 'Bottom Inner Panel',
+                       width: '75%',
+                       height: 90
+               }]
+       });
+ */
+
+Ext.define('Ext.layout.container.Auto', {
+
+    /* Begin Definitions */
+
+    alias: ['layout.auto', 'layout.autocontainer'],
+
+    extend: 'Ext.layout.container.Container',
+
+    /* End Definitions */
+
+    type: 'autocontainer',
+
+    fixedLayout: false,
+
+    bindToOwnerCtComponent: true,
+
+    // @private
+    onLayout : function(owner, target) {
+        var me = this,
+            items = me.getLayoutItems(),
+            ln = items.length,
+            i;
+
+        // Ensure the Container is only primed with the clear element if there are child items.
+        if (ln) {
+            // Auto layout uses natural HTML flow to arrange the child items.
+            // To ensure that all browsers (I'm looking at you IE!) add the bottom margin of the last child to the
+            // containing element height, we create a zero-sized element with style clear:both to force a "new line"
+            if (!me.clearEl) {
+                me.clearEl = me.getRenderTarget().createChild({
+                    cls: Ext.baseCSSPrefix + 'clear',
+                    role: 'presentation'
+                });
+            }
+
+            // Auto layout allows CSS to size its child items.
+            for (i = 0; i < ln; i++) {
+                me.setItemSize(items[i]);
+            }
+        }
+    }
+});
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