[EMAIL PROTECTED] writes:
> Hello,
>
> I would like to know how to set a fixed column width in a virtual tree. I
> first add the tree like this:
> --------------
> var tree = new qx.ui.treevirtual.TreeVirtual("Tree");
> with (tree)
> { set({
> left : 550,
> top : 30,
> width : 400,
> height : 200,
> border :qx.renderer.border.BorderPresets.getInstance().thinInset,
> statusBarVisible: false
> });
> setColumnWidth(0,400);
> setAlwaysShowOpenCloseSymbol(true);
>
> };
> tree.addToDocument();
> ----------
> After that rows and leafs are added to the tree.
> When loading this i get the following debug messages:
> ---------------
> 16250 DEBUG: qx.ui.table.ResizeTableColumnModel[212]: onappear
> 016265 DEBUG: qx.ui.table.DefaultResizeBehavior[22]: computeColumnsFlexWidth
> 016265 DEBUG: qx.ui.table.DefaultResizeBehavior[22]: Width: 20/380
> 016265 DEBUG: qx.ui.table.DefaultResizeBehavior[22]: Flexible Count: 0
> 016281 DEBUG: qx.ui.table.DefaultResizeBehavior[22]: col 0: width=36
> ---------------
>
> How can i stop the resizing of the columns? The effect of resizing column
> 0 to 36px happens also when the event 'onverticalscrollbarchanged' is
> fired instead of 'onappear'.
The default column model for TreeVirtual is the ResizeTableColumnModel.
It allows you fine-grained control over the widths of each column,
whether fixed-width or "flex", with the ability to specify minimum and
maximum widths. To specify that the first column should be a fixed
width of 200px, do this:
var tree = new qx.ui.treevirtual.TreeVirtual("Tree");
var resizeBehavior = tree.getTableColumnModel().getBehavior().
resizeBehavior.setWidth(0, 200);
Look at examples/Table_1.html for more usage examples of resize
behaviors, and at the documentation for qx.ui.table.DefaultResizeBehavior.
If you truly want to specify a fixed width for all columns with no
automatic resizing of any columns, then replace this:
var tree = new qx.ui.treevirtual.TreeVirtual("Tree");
with this:
var custom =
{
tableColumnModel :
function(obj)
{
return new qx.ui.table.TableColumnModel(obj);
}
};
var tree = new qx.ui.treevirtual.TreeVirtual("Tree", custom);
This specifies that the tree is to use the normal table column model in
which you specify the fixed widths of each column, with no automatic
resizing.
Cheers,
Derrell
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