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using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace Aga.Controls.Tree
{
public class SortedTreeModel: TreeModelBase
{
private ITreeModel _innerModel;
public ITreeModel InnerModel
{
get { return _innerModel; }
}
private IComparer _comparer;
public IComparer Comparer
{
get { return _comparer; }
set
{
_comparer = value;
OnStructureChanged(new TreePathEventArgs(TreePath.Empty));
}
}
public SortedTreeModel(ITreeModel innerModel)
{
_innerModel = innerModel;
_innerModel.NodesChanged += new EventHandler<TreeModelEventArgs>(_innerModel_NodesChanged);
_innerModel.NodesInserted += new EventHandler<TreeModelEventArgs>(_innerModel_NodesInserted);
_innerModel.NodesRemoved += new EventHandler<TreeModelEventArgs>(_innerModel_NodesRemoved);
_innerModel.StructureChanged += new EventHandler<TreePathEventArgs>(_innerModel_StructureChanged);
}
void _innerModel_StructureChanged(object sender, TreePathEventArgs e)
{
OnStructureChanged(e);
}
void _innerModel_NodesRemoved(object sender, TreeModelEventArgs e)
{
OnStructureChanged(new TreePathEventArgs(e.Path));
}
void _innerModel_NodesInserted(object sender, TreeModelEventArgs e)
{
OnStructureChanged(new TreePathEventArgs(e.Path));
}
void _innerModel_NodesChanged(object sender, TreeModelEventArgs e)
{
OnStructureChanged(new TreePathEventArgs(e.Path));
}
public override IEnumerable GetChildren(TreePath treePath)
{
if (Comparer != null)
{
ArrayList list = new ArrayList();
IEnumerable res = InnerModel.GetChildren(treePath);
if (res != null)
{
foreach (object obj in res)
list.Add(obj);
list.Sort(Comparer);
return list;
}
else
return null;
}
else
return InnerModel.GetChildren(treePath);
}
public override bool IsLeaf(TreePath treePath)
{
return InnerModel.IsLeaf(treePath);
}
}
}
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Philip is a Software Architect with severaly years of experience. He studied business IT in the University of Wedel, Germany, and has reached his Masters degree in 2010. Back in 2002, he started his so far best-known software PDFCreator. The second developer joined two years later and since then, both constantly improve this piece of open source software.