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// NodeSelection.cs - a TreeSelection implementation that exposes ITreeNodes
//
// Author: Duncan Mak (duncan@ximian.com)
//
// Copyright (c) 2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace Gtk {
using System;
public class NodeSelection {
private TreeSelection selection;
public event EventHandler Changed;
internal NodeSelection (TreeSelection selection)
{
this.selection = selection;
selection.Changed += new EventHandler (ChangedHandler);
}
private void ChangedHandler (object o, EventArgs args)
{
if (Changed != null)
Changed (this, args);
}
public bool NodeIsSelected (ITreeNode node)
{
return selection.IterIsSelected (NodeView.NodeStore.GetIter (node));
}
public bool PathIsSelected (TreePath path)
{
return selection.PathIsSelected (path);
}
public void SelectAll ()
{
selection.SelectAll ();
}
public void SelectNode (ITreeNode node)
{
selection.SelectIter (NodeView.NodeStore.GetIter (node));
}
public void SelectPath (TreePath path)
{
selection.SelectPath (path);
}
public void SelectRange (ITreeNode begin_node, ITreeNode end_node)
{
TreePath begin = NodeView.NodeStore.GetPath (begin_node);
TreePath end = NodeView.NodeStore.GetPath (end_node);
selection.SelectRange (begin, end);
}
public void UnselectAll ()
{
selection.UnselectAll ();
}
public void UnselectNode (ITreeNode node)
{
selection.UnselectIter (NodeView.NodeStore.GetIter (node));
}
public void UnselectPath (TreePath path)
{
selection.UnselectPath (path);
}
public void UnselectRange (TreePath begin, TreePath end)
{
selection.UnselectRange (begin, end);
}
public void UnselectRange (ITreeNode begin_node, ITreeNode end_node)
{
TreePath begin = NodeView.NodeStore.GetPath (begin_node);
TreePath end = NodeView.NodeStore.GetPath (end_node);
selection.UnselectRange (begin, end);
}
public SelectionMode Mode {
get {
return selection.Mode;
}
set {
selection.Mode = value;
}
}
public NodeView NodeView {
get {
return selection.TreeView as NodeView;
}
}
public ITreeNode[] SelectedNodes {
get {
TreePath [] paths = selection.GetSelectedRows ();
int length = paths.Length;
ITreeNode [] results = new ITreeNode [length];
for (int i = 0; i < length; i++)
results [i] = NodeView.NodeStore.GetNode (paths [i]);
return results;
}
}
public ITreeNode SelectedNode {
get {
if (Mode == SelectionMode.Multiple)
throw new InvalidOperationException ("SelectedNode is not valid with multi-selection mode");
ITreeNode [] sn = SelectedNodes;
if (sn.Length == 0)
return null;
return sn [0];
}
set {
// with multiple mode, the behavior
// here would be unclear. Does it just
// select the `value' node or does it
// make the `value' node the only
// selected node.
if (Mode == SelectionMode.Multiple)
throw new InvalidOperationException ("SelectedNode is not valid with multi-selection mode");
SelectNode (value);
}
}
}
}
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