On Mon, May 10, 2010 at 07:52, Michael Saladin <[email protected]> wrote:
> Hi all,
>
> I'm quite new to qooxdoo and I'd like to create a table that contains
> filters in the header cells (where you can narrow the results, something
> very similar to qx.ui.table.model.Filtered, for each column. E.g. when you
> have a column with dates, you have a filter in the header column that let's
> you define from-until, and when you have a String, it let's you define a
> REGEX, and when the column contains an enumeration of values, a dropdown
> menu shows all possibilities).
>
> This works great, I can provide my own custom header cell renderer and this
> renderer returns my own widgets which are then displayed in the header
> cells.
>
You may be quite new to qooxdoo, but you've already dived deep into the
qooxdoo source code and from what you've described, I can tell that you've
learned a LOT.
> I can do this by subclassing the qx.ui.table.pane.Scroller class, and by
> overwriting the _onMouseupHeader method. That works great. The problem is
> that when I overwrite the _onMouseupHeader, I need to access private members
> of the Scroller (e.g. "__ignoreClick"), but there is no setter or getter for
> this member in the Scroller implementation. It seems to work just fine, even
> when I use "generate.py build", but I think it's not the best way to change
> a private member of a superclass in a subclass.
>
> One workaround is that I copy&paste the whole source code of
> qx.ui.table.pane.Scroller and create my own version (MyScroller) and do the
> change in there. I don't like this workaround because it prevents me to
> update to a future version of qooxdoo.
>
> Another workaround would be when there would be a getter-/setter method for
> the private member "__ignoreClick". That would work, but the solution would
> only be a special solution to my current problem and would not resolve it in
> a generic way.
>
> Any other ideas?
>
You were on the right track, overriding _onMouseupHeader(). You'll notice
that the __ignoreClick member is only used in _onMouseupHeader() and in
_onClickHeader(). So all you have to do is override both methods, and
provide your own local __ignoreClick member (or, better yet, to avoid
confusion, use a different name) in your subclass. Something like this
should work for you:
qx.Class.define("custom.Scroller",
{
extend : qx.ui.table.pane.Scroller,
members :
{
__myIgnoreClick : false,
_onMouseupHeader : function(e)
{
var table = this.getTable();
if (! table.getEnabled()) {
return;
}
if (this.__resizeColumn != null)
{
this._stopResizeHeader();
this.__myIgnoreClick = true;
e.stop();
}
else if (this.__moveColumn != null)
{
this._stopMoveHeader();
e.stop();
}
},
_onClickHeader(e)
{
if (this.__myIgnoreClick)
{
this.__myIgnoreClick = false;
return;
}
this.base(arguments, e);
}
}
}
Hope that helps.
Derrell
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