Hi,
I extended QxTreeFolder for adding child when user expand a node. A
event is fired once when the user click on collapsed button first time.
//----------------------------------------------
// QxDynamicTreeFolder
//----------------------------------------------
function QxDynamicTreeFolder(vLabel)
{
QxTreeFolder.call(this, vLabel);
this._expanded = false;
}
QxDynamicTreeFolder.extend(QxTreeFolder, "QxDynamicTreeFolder");
proto._modifyOpen = function(propValue, propOldValue, propData)
{
if (!this._expanded)
{
this.createDispatchEvent("expand");
this._expanded = true;
}
return QxTreeFolder.prototype._modifyOpen.call(this, propValue,
propOldValue, propData);
}
//----------------------------------------------
// example
//----------------------------------------------
function onExpand(e)
{
for (var i = 0; i < 20;i++)
{
var f1 = new QxTreeFolder("SubFolder");
e.getCurrentTarget().add(f1);
}
}
var df = new QxDynamicTreeFolder("DynamicFolder");
df.setAlwaysShowPlusMinusSymbol(true);
df.addEventListener("expand", onExpand);
Stefano
Ricardo Borillo Domenech ha scritto:
Hi,
I make a "quick and dirty" test on these some days ago ...
My intention is to extend QxTreeFolder to handle reload (from
datasource) stuff.
I have a question: can I append elements to tree dynamically when the
user click on the plus sign? In other word, I can force display of plus
button even if node contains no children?
(for win32 programmers, this is similar to I_CHILDRENCALLBACK flag of
TreeView control)
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