/// <remarks>
/// Note that this method should not be confused with Form.Close().
/// Be sure to deal with a compile-time instance of type IDesigner
/// to invoke this method.
/// </remarks>
void IDesigner.Show()
{
UpdateTitle();
Dataphoria.AttachForm(this);
// HACK: Don't know why, but for some reason, setting the MDIParent of this form collapses the nodes tree.
FNodesTree.ExpandAll();
}
protected void SetDesignHost(IHost host, bool owner)
{
if (host != _designHost)
{
SuspendLayout();
try
{
if (_designHost != null)
{
ActivateNode(null);
_palettePanel.SelectPaletteItem(null, false);
DetachDesignHost();
if (_isDesignHostOwner && !_designFormClosing)
{
((IWindowsFormInterface)_designHost.Children[0]).Close(CloseBehavior.RejectOrClose);
}
_designHost = null;
FNodesTree.BeginUpdate();
try
{
ClearNodesTree();
}
finally
{
FNodesTree.EndUpdate();
}
}
_designHost = host;
_isDesignHostOwner = owner;
try
{
if (_designHost != null)
{
FNodesTree.BeginUpdate();
try
{
if (_designHost.Children.Count != 0)
{
FNodesTree.SelectedNode = FNodesTree.AddNode(_designHost.Children[0]);
FNodesTree.SelectedNode.SetReadOnly(true, false);
ActivateNode(FNodesTree.SelectedNode);
// the tree doesn't initially raise an ActiveChanged event
}
}
finally
{
FNodesTree.EndUpdate();
}
AttachDesignHost(_designHost);
}
}
catch
{
_designHost = null;
ClearNodesTree();
throw;
}
}
finally
{
ResumeLayout(true);
}
}
}