I'm resurrecting this old thread to report on how I solved this. The goal was
to have a treevirtual with no header row. As discussed in this thread, the
obvious idea of setting the height to zero does not work, because a height
of zero is ignored.
If you hide the header by doing this:
table.getPaneScroller(0).getHeader().setVisibility("excluded");
You get various exceptions thrown by qx.ui.table.pane.Scroller. These are
caused by the Scroller's calls to the header's getContainerLocation method,
which returns null when the header is excluded.
The solution is to create a new class that inherits from
qx.ui.table.pane.Header and override the getContainerLocation method like
so:
getContainerLocation: function(mode) {
var domEl = this.getContainerElement().getDomElement();
if (domEl) {
return qx.bom.element.Location.get(domEl, mode);
}
else {
domEl =
this.__paneScroller.getContainerElement().getDomElement();
if (domEl) {
var loc = qx.bom.element.Location.get(domEl, mode);
return {
left: loc.left,
right: loc.right,
top: loc.top,
bottom: loc.top // not loc.bottom!
};
}
else {
return {
left: 0,
right: 0,
top: 0,
bottom: 0
};
}
}
}
This is a bit of a hack: if the header's dom node is excluded, it uses the
scroll container's dom node to determine the location information.
I believe the correct long term solution for the QooxDoo team would be to
put guards in Scroller.js to not expect getContainerLocation to always
return a non-null response.
Dave
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