I have a rather complicated TreeView using a ListStore. Filtering the
view works, but I'm so far unable to get sorting to work. I have a
sort object connected to the model and the filter object connected to
the sort object; I'm found very similair constructs in other projects
(including Galaxium
<http://code.google.com/p/galaxium/source/browse/trunk/src/Galaxium.Gui.Gtk/NewTreeView/GalaxiumTreeView.cs?r=551>)
but it just doesn't sort. My column-header-click happens when a column gets
clicked but it doesn't sort, the actual sort method never gets pinged.
Despite beng connect-before Gtk seems to be doing something before my
column-header-clicked gets called. Any pointers appreciated.
What happens when a column header is clicked:
(Whitemice.Consonance:20431): Gtk-CRITICAL **:
gtk_tree_sortable_get_sort_column_id: assertion `GTK_IS_TREE_SORTABLE
(sortable)' failed
(Whitemice.Consonance:20431): Gtk-CRITICAL **:
gtk_tree_sortable_has_default_sort_func: assertion `GTK_IS_TREE_SORTABLE
(sortable)' failed
(Whitemice.Consonance:20431): Gtk-CRITICAL **:
gtk_tree_sortable_set_sort_column_id: assertion `GTK_IS_TREE_SORTABLE
(sortable)' failed
ColumnClicked
Sort Column:4 Order:Ascending
The actual sort method never gets called
<object>
TreeView view;
ListStore taskStore;
TreeModelSort sortAdapter;
TreeModelFilter taskFilter;
int sortColumn;
SortType sortOrder;
<ctor>
taskStore = new Gtk.ListStore();
...
objectIdColumn = new Gtk.TreeViewColumn ();
objectIdColumn.Title = "Object Id";
objectIdColumn.Reorderable = true;
objectIdColumn.Resizable = true;
objectIdColumn.Clickable = true;
cell = new Gtk.CellRendererText ();
objectIdColumn.PackStart(cell, true);
objectIdColumn.SetCellDataFunc(cell, new
Gtk.TreeCellDataFunc(RenderObjectId));
objectIdColumn.SortColumnId = 0;
objectIdColumn.Clicked += new
EventHandler(ColumnClicked);
view.AppendColumn(objectIdColumn);
...
sortAdapter = new TreeModelSort(taskStore);
sortAdapter.SetSortFunc(-2, OrderTasks);
taskFilter = new TreeModelFilter(sortAdapter, null);
taskFilter.VisibleFunc = new
Gtk.TreeModelFilterVisibleFunc(TaskFilter);
view.Model = taskFilter;
</ctor>
[GLib.ConnectBefore]
protected void ColumnClicked(object sender, EventArgs args)
{
TreeViewColumn column;
Console.WriteLine("ColumnClicked");
if (sender is Gtk.TreeViewColumn)
{
column = (sender as Gtk.TreeViewColumn);
if (column.SortColumnId == sortColumn)
{
if (sortOrder == SortType.Ascending)
sortOrder = SortType.Descending;
else sortOrder = SortType.Ascending;
column.SortOrder = sortOrder;
column.SortIndicator = true;
} else
{
sortColumn = column.SortColumnId;
sortOrder = SortType.Ascending;
column.SortIndicator = true;
}
Console.WriteLine("Sort Column:{0} Order:{1}", sortColumn,
sortOrder);
sortAdapter.SetSortColumnId(sortColumn, sortOrder);
sortAdapter.ChangeSortColumn ();
}
} // end ColumnClicked
protected int OrderTasks(TreeModel model, TreeIter t1, TreeIter t2)
{
// ObjectId 0 Title 1 Project 2 Start 3
// Creator 4 Status 5 Priority 6 End 7
// Executant 8 Completed 9
Console.WriteLine("SimpleTaskList.OrderTasks");
return 0;
}
...
</object>
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