好的。我一直在思考這個一段時間了,下面的方法似乎爲我工作:)
我已經配置了左樹這樣的:
listeners:
{
beforenodedrop: function (dropEvent) {
// Does this node come from the right tree?
if (dropEvent.source.tree.id !== dropEvent.tree.id) {
// The node should be discarded.
dropEvent.dropNode.parentNode.removeChild(dropEvent.dropNode, true);
// The node has been discarded, return drop succeeded.
dropEvent.dropStatus = true;
return false;
}
return true;
},
nodedragover: function (dragevent) {
// If the node comes from the right tree, it is allowed to be dropped here.
if (dragevent.source.tree.id !== dragevent.tree.id) {
return true;
}
// A node from this tree is not allowed to be dropped.
return false;
}
}
的權樹配置像這樣:
listeners:
{
beforenodedrop: function (dropEvent) {
// Does this node come from the left tree?
if (dropEvent.source.tree.id !== dropEvent.tree.id) {
// The node should be cloned and inserted in the right tree.
// Copy the node.
var node = dropEvent.dropNode; // the node that was dropped
var nodeCopy = new Ext.tree.TreeNode(// copy it
Ext.apply({}, node.attributes)
);
// Match the id's.
nodeCopy.id = Ext.id(null,'newnode') + '_' + node.id;
// Find the right place to put it.
if (dropEvent.target.parentNode === dropEvent.tree.getRootNode()) {
// The node is placed on a folder, thus drop it there.
dropEvent.target.appendChild(nodeCopy);
} else {
// The node is placed inside a folder, thus place it in there.
dropEvent.target.parentNode.appendChild(nodeCopy);
}
// The node has been dropped, return okay and stop further process.
dropEvent.dropStatus = true;
return false;
}
// Just use the normal builtin drag and drop.
return true;
}
}
樹木都已經被設置爲啓用中拖放:
enableDD: true
個
所有葉節點具有以下配置:
allowDrop: true,
draggable: true
所有文件夾設置爲:
allowDrop: true,
draggable: false
的結論是,我所選擇重寫某些內建drag'n」的在treepanel中放置方法,同時仍保持內置功能。