Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / grid / plugin / HeaderReorderer.js

diff --git a/src/grid/plugin/HeaderReorderer.js b/src/grid/plugin/HeaderReorderer.js
new file mode 100644 (file)
index 0000000..5395725
--- /dev/null
+++ b/src/grid/plugin/HeaderReorderer.js
@@ -0,0 +1,45 @@
+/**
+ * @class Ext.grid.plugin.HeaderReorderer
+ * @extends Ext.util.Observable
+ * @private
+ */
+Ext.define('Ext.grid.plugin.HeaderReorderer', {
+    extend: 'Ext.util.Observable',
+    requires: ['Ext.grid.header.DragZone', 'Ext.grid.header.DropZone'],
+    alias: 'plugin.gridheaderreorderer',
+
+    init: function(headerCt) {
+        this.headerCt = headerCt;
+        headerCt.on('render', this.onHeaderCtRender, this);
+    },
+
+    /**
+     * @private
+     * AbstractComponent calls destroy on all its plugins at destroy time.
+     */
+    destroy: function() {
+        Ext.destroy(this.dragZone, this.dropZone);
+    },
+
+    onHeaderCtRender: function() {
+        this.dragZone = Ext.create('Ext.grid.header.DragZone', this.headerCt);
+        this.dropZone = Ext.create('Ext.grid.header.DropZone', this.headerCt);
+        if (this.disabled) {
+            this.dragZone.disable();
+        }
+    },
+    
+    enable: function() {
+        this.disabled = false;
+        if (this.dragZone) {
+            this.dragZone.enable();
+        }
+    },
+    
+    disable: function() {
+        this.disabled = true;
+        if (this.dragZone) {
+            this.dragZone.disable();
+        }
+    }
+});
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