using System;

using System.Collections.ObjectModel;

using System.Collections.Generic;

using System.Drawing;

using System.Windows.Forms;

namespace WeifenLuo.WinFormsUI.Docking

{

public class DockPaneCollection : ReadOnlyCollection<DockPane>

{

internal DockPaneCollection()

: base(new List<DockPane>())

{

}

internal int Add(DockPane pane)

{

if (Items.Contains(pane))

return Items.IndexOf(pane);

Items.Add(pane);

return Count - 1;

}

internal void AddAt(DockPane pane, int index)

{

if (index < 0 || index > Items.Count - 1)

return;

if (Contains(pane))

return;

Items.Insert(index, pane);

}

internal void Dispose()

{

for (int i=Count - 1; i>=0; i--)

this[i].Close();

}

internal void Remove(DockPane pane)

{

Items.Remove(pane);

}

}

}