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// MdiToolBar.cs
// John Barnette (jbarn@httcb.net)
//
// Copyright (c) 2002 John Barnette
//
// This file is part of Monodoc, a multilingual API documentation tool.
//
// Monodoc is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Monodoc 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Monodoc; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
namespace Mono.Doc.Gui
{
public class MdiToolBar : ToolBar
{
#region Private Instance Fields
private Hashtable mdiChildren = null;
private Form currentMdiChild = null;
#endregion // Private Instance Fields
#region Constructors and Destructors
public MdiToolBar() : base()
{
this.mdiChildren = new Hashtable();
}
#endregion // Constructors and Destructors
#region Event Handlers
private void mdiParent_MdiChildActivate(object sender, EventArgs args)
{
Form activeMdiChild = ((Form) sender).ActiveMdiChild;
if (activeMdiChild != null)
{
if (this.mdiChildren[activeMdiChild] == null)
{
// need a new button
ToolBarButton newButton = new ToolBarButton(activeMdiChild.Text);
newButton.Style = ToolBarButtonStyle.ToggleButton;
this.mdiChildren[activeMdiChild] = newButton;
activeMdiChild.Closing += new CancelEventHandler(this.mdiChild_Closing);
// tooltip
newButton.ToolTipText = activeMdiChild.Text;
// separators
if ((this.Appearance == ToolBarAppearance.Flat) && (this.Buttons.Count > 0))
{
ToolBarButton sep = new ToolBarButton();
sep.Style = ToolBarButtonStyle.Separator;
this.Buttons.Add(sep);
}
// image index. if the mdi child form's Tag property is a string
// and contains the text "mditoolbarimageindex[n]", where n is
// an integer, the associated button's ImageIndex property will be
// set to n.
String formTag = activeMdiChild.Tag as string;
if (formTag != null)
{
string lookFor = "mditoolbarimageindex[";
int index = formTag.IndexOf(lookFor);
if (index != -1)
{
int startIndex = index + lookFor.Length;
int endIndex = formTag.IndexOf("]", startIndex);
string imageIndexStr = formTag.Substring(startIndex, endIndex - startIndex);
MessageBox.Show("mditoolbar: imageIndexStr: " + imageIndexStr);
try
{
newButton.ImageIndex = int.Parse(imageIndexStr);
}
catch
{
}
}
}
else
{
// use default index
newButton.ImageIndex = 0;
}
this.Buttons.Add(newButton);
}
this.CurrentMdiChild = activeMdiChild;
}
else
{
// last MDI child removed; clean up
this.mdiChildren.Clear();
this.Buttons.Clear();
this.currentMdiChild = null;
}
}
private void mdiChild_Closing(object sender, CancelEventArgs args)
{
ToolBarButton b = (ToolBarButton) this.mdiChildren[sender];
// deal with separators
if ((this.Appearance == ToolBarAppearance.Flat) && (this.Buttons.Count > 1))
{
int bIndex = this.Buttons.IndexOf(b);
if (bIndex == 0)
{
this.Buttons.RemoveAt(bIndex + 1);
}
else
{
this.Buttons.RemoveAt(bIndex - 1);
}
}
this.Buttons.Remove(b);
this.mdiChildren.Remove(sender);
}
#endregion // Event Handlers
#region Overridden Event Handlers
protected override void OnButtonClick(ToolBarButtonClickEventArgs args)
{
base.OnButtonClick(args);
args.Button.Pushed = true;
// linear search, but double-hashing seems worthless.
foreach (Form keyChild in this.mdiChildren.Keys)
{
if (args.Button == this.mdiChildren[keyChild])
{
keyChild.Activate();
break;
}
}
}
protected override void OnParentChanged(EventArgs args)
{
base.OnParentChanged(args);
// TODO: potential for multiple registration of event handler?
if (this.Parent is Form && ((Form) this.Parent).IsMdiContainer)
{
((Form) this.Parent).MdiChildActivate
+= new EventHandler(this.mdiParent_MdiChildActivate);
}
}
#endregion // Overridden Event Handlers
#region Private Instance Properties
private Form CurrentMdiChild
{
get { return this.currentMdiChild; }
set
{
if (this.currentMdiChild != null)
{
ToolBarButton child = this.mdiChildren[this.currentMdiChild] as ToolBarButton;
if (child != null)
{
child.Pushed = false;
}
}
((ToolBarButton) this.mdiChildren[value]).Pushed = true;
this.currentMdiChild = value;
}
}
#endregion // Private Instance Properties
}
}
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