1 files changed, 43 insertions, 0 deletions

diff --git a/frontend/beta/js/YUI-extensions/tree/TreeDragZone.js b/frontend/beta/js/YUI-extensions/tree/TreeDragZone.js
new file mode 100644
index 0000000..9b77b3c
--- a/dev/null
+++ b/frontend/beta/js/YUI-extensions/tree/TreeDragZone.js
@@ -0,0 +1,43 @@
+YAHOO.ext.tree.TreeDragZone = function(tree, config){

+    YAHOO.ext.tree.TreeDragZone.superclass.constructor.call(this, tree.getEl(), config);

+    this.tree = tree;

+};

+

+YAHOO.extendX(YAHOO.ext.tree.TreeDragZone, YAHOO.ext.dd.DragZone, {

+    ddGroup : 'TreeDD',

+    

+    onBeforeDrag : function(data, e){

+        var n = data.node;

+        return n && n.draggable && !n.disabled;

+    },

+    

+    onInitDrag : function(e){

+        var data = this.dragData;

+        this.tree.getSelectionModel().select(data.node);

+        this.proxy.update('');

+        data.node.ui.appendDDGhost(this.proxy.ghost.dom);

+        this.tree.fireEvent('startdrag', this.tree, data.node, e);

+    },

+    

+    getRepairXY : function(e, data){

+        return data.node.ui.getDDRepairXY();

+    },

+    

+    onEndDrag : function(data, e){

+        this.tree.fireEvent('enddrag', this.tree, data.node, e); 

+    },

+    

+    onValidDrop : function(dd, e, id){

+        this.tree.fireEvent('dragdrop', this.tree, this.dragData.node, dd, e);

+        this.hideProxy();

+    },

+    

+    beforeInvalidDrop : function(e, id){

+        if(YAHOO.util.Anim){

+            // this scrolls the original position back into view

+            var sm = this.tree.getSelectionModel();

+            sm.clearSelections();

+            sm.select(this.dragData.node);

+        }

+    }

+});