Drag and Drop from Grid to Tree and backwards - extjs

Question

Since a few days now I try to change an ExtJs ['Grid to Tree Drag and Drop' Example][1] to work in both directions. But all I get is an 'almost' working application.
Now it works as far as I can drag an item from grid to tree, within tree, within grid but if i drag it from tree to grid, it doesn't drop. It just shows the green hook.
I also tried to differ the ddGroup from tree and grid, but then nothing works anymore.
This is too much for an ExtJs beginner.
// Stücklisten Grid
stuecklistengrid = Ext.extend(Ext.grid.GridPanel, {
initComponent:function() {
var config = {
store:itemPartStore
,columns:[{
id:'PART_ITE_ID'
,header:"PART_ITE_ID"
,width:200, sortable:true
,dataIndex:'PART_ITE_ID'
},{
header:"IS_EDITABLE"
,width:100
,sortable:true
,dataIndex:'IS_EDITABLE'
},{
header:"IS_VISIBLE"
,width:100
,sortable:true
,dataIndex:'IS_VISIBLE'
}]
,viewConfig:{forceFit:true}
}; // eo config object
// apply config
Ext.apply(this, Ext.apply(this.initialConfig, config));
this.bbar = new Ext.PagingToolbar({
store:this.store
,displayInfo:true
,pageSize:10
});
// call parent
stuecklistengrid.superclass.initComponent.apply(this, arguments);
} // eo function initComponent
,onRender:function() {
// call parent
stuecklistengrid.superclass.onRender.apply(this, arguments);
// load the store
this.store.load({params:{start:0, limit:10}});
} // eo function onRender
});
Ext.reg('examplegrid', stuecklistengrid);
// Stücklisten Tree
var CheckTree = new Ext.tree.TreePanel({
root:{ text:'root', id:'root', expanded:true, children:[{
text:'Folder 1'
,qtip:'Rows dropped here will be appended to the folder'
,children:[{
text:'Subleaf 1'
,qtip:'Subleaf 1 Quick Tip'
,leaf:true
}]
},{
text:'Folder 2'
,qtip:'Rows dropped here will be appended to the folder'
,children:[{
text:'Subleaf 2'
,qtip:'Subleaf 2 Quick Tip'
,leaf:true
}]
},{
text:'Leaf 1'
,qtip:'Leaf 1 Quick Tip'
,leaf:true
}]},
loader:new Ext.tree.TreeLoader({preloadChildren:true}),
enableDD:true,
ddGroup:'grid2tree',
id:'tree',
region:'east',
title:'Tree',
layout:'fit',
width:300,
split:true,
collapsible:true,
autoScroll:true,
listeners:{
// create nodes based on data from grid
beforenodedrop:{fn:function(e) {
// e.data.selections is the array of selected records
if(Ext.isArray(e.data.selections)) {
// reset cancel flag
e.cancel = false;
// setup dropNode (it can be array of nodes)
e.dropNode = [];
var r;
for(var i = 0; i < e.data.selections.length; i++) {
// get record from selectons
r = e.data.selections[i];
// create node from record data
e.dropNode.push(this.loader.createNode({
text:r.get('PART_ITE_ID')
,leaf:true
,IS_EDITABLE:r.get('IS_EDITABLE')
,IS_VISIBLE:r.get('IS_VISIBLE')
}));
}
// we want Ext to complete the drop, thus return true
return true;
}
// if we get here the drop is automatically cancelled by Ext
}}
}
});
// Stücklisten Container
var itemPartList = new Ext.Container({
id: 'itemPartList',
title: 'Stücklisten',
border:false,
layout:'border',
items:[CheckTree, {
xtype:'examplegrid'
,id:'SLgrid'
,title:'Grid'
,region:'center'
,layout:'fit'
,enableDragDrop:true
,ddGroup:'grid2tree'
,listeners: {
afterrender: {
fn: function() {
// This will make sure we only drop to the view scroller element
SLGridDropTargetEl2 = Ext.getCmp('SLgrid').getView().scroller.dom;
SLGridDropTarget2 = new Ext.dd.DropTarget(SLGridDropTargetEl2, {
ddGroup : 'grid2tree',
notifyDrop : function(ddSource, e, data){
var records = ddSource.dragData.selections;
Ext.each(records, ddSource.grid.store.remove,
ddSource.grid.store);
Ext.getCmp('SLgrid').store.add(records);
return true
}
});
}
}
}
}]
});

Answer 1

You need to implement the onNodeDrop event of the grid. See http://docs.sencha.com/ext-js/4-1/#!/api/Ext.grid.header.DropZone-method-onNodeDrop