source: branches/2839_HiveProjectManagement/HeuristicLab.ExtLibs/HeuristicLab.WinFormsUI/2.7.0/WinFormsUI-2.7.0/Docking/DockWindowCollection.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace WeifenLuo.WinFormsUI.Docking
{
  public class DockWindowCollection : ReadOnlyCollection<DockWindow>
  {
    internal DockWindowCollection(DockPanel dockPanel)
            : base(new List<DockWindow>())
    {
      Items.Add(new DockWindow(dockPanel, DockState.Document));
      Items.Add(new DockWindow(dockPanel, DockState.DockLeft));
      Items.Add(new DockWindow(dockPanel, DockState.DockRight));
      Items.Add(new DockWindow(dockPanel, DockState.DockTop));
      Items.Add(new DockWindow(dockPanel, DockState.DockBottom));
    }

    public DockWindow this [DockState dockState]
    {
      get
      {
        if (dockState == DockState.Document)
          return Items[0];
        else if (dockState == DockState.DockLeft || dockState == DockState.DockLeftAutoHide)
          return Items[1];
        else if (dockState == DockState.DockRight || dockState == DockState.DockRightAutoHide)
          return Items[2];
        else if (dockState == DockState.DockTop || dockState == DockState.DockTopAutoHide)
          return Items[3];
        else if (dockState == DockState.DockBottom || dockState == DockState.DockBottomAutoHide)
          return Items[4];

        throw (new ArgumentOutOfRangeException());
      }
    }
  }
}