Is there a way to make my treepanel perform a specific action when double clicked?
Every time I double click on a treenode, it expands or collapses unintentionally.
Is there a method to prevent this expanding or collapsing behavior when double clicking?
Please excuse my limited English skills. Thank you!
To disable double-click toggle, simply include toggleOnDblClick: false in the viewConfig section when setting up the treepanel. Make sure to treat the viewConfig as you would any other property:
{
xtype: 'treepanel',
id: 'tree_id',
name: 'tree_name',
viewConfig: {
toggleOnDblClick: false
},
width:....
}
watchTree.on('clickitem', function() { return true; });
Instead of overriding (Ext.tree.TreeNodeUI.override), I recommend a different approach as it may impact the behavior of all TreeNodeUI's within the application. My suggestion is to override the createNode method in the TreeLoader specific to the current tree:
new Ext.tree.TreePanel({
...
loader:new Ext.tree.TreeLoader({
...
// customizing the CreateNode function
createNode:function (attr) {
attr.uiProvider = Ext.extend(Ext.tree.TreeNodeUI, {
// private
onDblClick:function (e) {
e.preventDefault();
if (this.disabled) {
return;
}
if (this.fireEvent("beforedblclick", this.node, e) !== false) {
// if (this.checkbox) {
// this.toggleCheck();
// }
// if (!this.animating && this.node.isExpandable()) {
// this.node.toggle();
// }
// YOUR CUSTOM CODE HERE
this.fireEvent("dblclick", this.node, e);
}
}
});
return Ext.tree.TreeLoader.prototype.createNode.call(this, attr);
}});
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