Roo/tree/TreeDragZone.js

/*
 * Based on:
 * Ext JS Library 1.1.1
 * Copyright(c) 2006-2007, Ext JS, LLC.
 *
 * Originally Released Under LGPL - original licence link has changed is not relivant.
 *
 * Fork - LGPL
 * <script type="text/javascript">
 */


if(Roo.dd.DragZone){
Roo.tree.TreeDragZone = function(tree, config){
    Roo.tree.TreeDragZone.superclass.constructor.call(this, tree.getTreeEl(), config);
    this.tree = tree;
};

Roo.extend(Roo.tree.TreeDragZone, Roo.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){
        // this scrolls the original position back into view
        var sm = this.tree.getSelectionModel();
        sm.clearSelections();
        sm.select(this.dragData.node);
    }
});
}