protected virtual void OnCollapsed(TreeGridViewItemEventArgs e)
{
if (Collapsed != null)
{
Collapsed(this, e);
}
}
protected virtual void OnExpanded(TreeGridViewItemEventArgs e)
{
if (Expanded != null)
{
Expanded(this, e);
}
}
private void folderView_Collapsed(object sender, TreeGridViewItemEventArgs e)
{
var gridItem = (TreeGridItem)e.Item;
gridItem.Values[0] = TreeDirectoryResource;
folderView.ReloadItem(gridItem, false);
}
private void folderView_Expanded(object sender, TreeGridViewItemEventArgs e)
{
var gridItem = (TreeGridItem)e.Item;
gridItem.Values[0] = ImageResources.Misc.DirectoryOpen;
folderView.ReloadItem(gridItem, false);
}
public void HandleRowExpanded(object o, Gtk.RowExpandedArgs args)
{
var h = Handler;
var e = new TreeGridViewItemEventArgs(h.GetItem(args.Path) as ITreeGridItem);
e.Item.Expanded = true;
h.Widget.OnExpanded(e);
}
public void HandleRowCollapsed(object o, Gtk.RowCollapsedArgs args)
{
var h = Handler;
var e = new TreeGridViewItemEventArgs(h.GetItem(args.Path) as ITreeGridItem);
e.Item.Expanded = false;
h.Widget.OnCollapsed(e);
h.SkipSelectedChange = false;
if (h.selectCollapsingItem == true)
{
h.Tree.Selection.UnselectAll();
h.Tree.Selection.SelectPath(args.Path);
h.selectCollapsingItem = null;
}
}
public void HandleRowExpanded(object o, Gtk.RowExpandedArgs args)
{
var h = Handler;
if (h.suppressExpandCollapseEvents > 0)
{
return;
}
var e = new TreeGridViewItemEventArgs(h.GetItem(args.Path) as ITreeGridItem);
e.Item.Expanded = true;
h.suppressExpandCollapseEvents++;
h.collection.ExpandItems(e.Item as ITreeGridStore <ITreeGridItem>, args.Path);
h.suppressExpandCollapseEvents--;
h.Callback.OnExpanded(h.Widget, e);
}
public override void AttachEvent(string handler)
{
switch (handler)
{
case TreeGridView.ExpandingEvent:
this.Tree.TestExpandRow += delegate(object o, Gtk.TestExpandRowArgs args) {
var e = new TreeGridViewItemCancelEventArgs(GetItem(args.Path) as ITreeGridItem);
Widget.OnExpanding(e);
args.RetVal = e.Cancel;
};
break;
case TreeGridView.ExpandedEvent:
this.Tree.RowExpanded += delegate(object o, Gtk.RowExpandedArgs args) {
var e = new TreeGridViewItemEventArgs(GetItem(args.Path) as ITreeGridItem);
e.Item.Expanded = true;
Widget.OnExpanded(e);
};
break;
case TreeGridView.CollapsingEvent:
this.Tree.TestCollapseRow += delegate(object o, Gtk.TestCollapseRowArgs args) {
var e = new TreeGridViewItemCancelEventArgs(GetItem(args.Path) as ITreeGridItem);
Widget.OnCollapsing(e);
args.RetVal = e.Cancel;
if (!e.Cancel)
{
selectCollapsingItem = AllowMultipleSelection ? false : ChildIsSelected(e.Item);
SkipSelectedChange = true;
}
};
break;
case TreeGridView.CollapsedEvent:
this.Tree.RowCollapsed += delegate(object o, Gtk.RowCollapsedArgs args) {
var e = new TreeGridViewItemEventArgs(GetItem(args.Path) as ITreeGridItem);
e.Item.Expanded = false;
Widget.OnCollapsed(e);
SkipSelectedChange = false;
if (selectCollapsingItem == true)
{
Tree.Selection.UnselectAll();
Tree.Selection.SelectPath(args.Path);
selectCollapsingItem = null;
}
};
break;
case TreeGridView.SelectedItemChangedEvent:
this.Tree.Selection.Changed += (o, args) => {
var item = this.SelectedItem;
if (!SkipSelectedChange && !object.ReferenceEquals(item, lastSelected))
{
Widget.OnSelectedItemChanged(EventArgs.Empty);
lastSelected = item;
}
};
break;
default:
base.AttachEvent(handler);
break;
}
}