dockcontent.cs

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// *****************************************************************************
// 
//  Copyright 2004, Weifen Luo
//  All rights reserved. The software and associated documentation 
//  supplied hereunder are the proprietary information of Weifen Luo
//  and are supplied subject to licence terms.
// 
//  WinFormsUI Library Version 1.0
// *****************************************************************************

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace WeifenLuo.WinFormsUI
{
	/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/ClassDef/*'/>
	public class DockContent : Form
	{
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Constructor[@name="()"]/*'/>
		public DockContent()
		{
			RefreshMdiIntegration();
		}

		/// <exclude/>
		protected override void Dispose(bool disposing)
		{
			if (disposing)
			{
				if (m_hiddenMdiChild != null)
				{
					m_hiddenMdiChild.Close();
					m_hiddenMdiChild = null;
				}

				DockPanel = null;
				if (AutoHideTab != null)
					AutoHideTab.Dispose();
				if (DockPaneTab != null)
					DockPaneTab.Dispose();
			}

			base.Dispose(disposing);
		}

		private bool m_allowRedocking = true;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="AllowRedocking"]/*'/>
		[LocalizedCategory("Category.Docking")]
		[LocalizedDescription("DockContent.AllowRedocking.Description")]
		[DefaultValue(true)]
		public bool AllowRedocking
		{
			get	{	return m_allowRedocking;	}
			set	{	m_allowRedocking = value;	}
		}

		private DockAreas m_allowedAreas = DockAreas.DockLeft | DockAreas.DockRight | DockAreas.DockTop | DockAreas.DockBottom | DockAreas.Document | DockAreas.Float;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="DockableAreas"]/*'/>
		[LocalizedCategory("Category.Docking")]
		[LocalizedDescription("DockContent.DockableAreas.Description")]
		[DefaultValue(DockAreas.DockLeft|DockAreas.DockRight|DockAreas.DockTop|DockAreas.DockBottom|DockAreas.Document|DockAreas.Float)]
		public DockAreas DockableAreas
		{
			get	{	return m_allowedAreas;	}
			set
			{
				if (m_allowedAreas == value)
					return;

				if (!DockHelper.IsDockStateValid(DockState, value))
					throw(new InvalidOperationException(ResourceHelper.GetString("DockContent.DockableAreas.InvalidValue")));

				m_allowedAreas = value;

				if (!DockHelper.IsDockStateValid(ShowHint, m_allowedAreas))
					ShowHint = DockState.Unknown;
			}
		}

		private double m_autoHidePortion = 0.25;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="AutoHidePortion"]/*'/>
		[LocalizedCategory("Category.Docking")]
		[LocalizedDescription("DockContent.AutoHidePortion.Description")]
		[DefaultValue(0.25)]
		public double AutoHidePortion
		{
			get	{	return m_autoHidePortion;	}
			set
			{
				if (value <= 0 || value > 1)
					throw(new ArgumentOutOfRangeException(ResourceHelper.GetString("DockContent.AutoHidePortion.OutOfRange")));

				if (m_autoHidePortion == value)
					return;

				m_autoHidePortion = value;

				if (DockPanel == null)
					return;

				if (DockPanel.ActiveAutoHideContent == this)
					DockPanel.PerformLayout();
			}
		}

		private string m_tabText = null;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="TabText"]/*'/>
		[Localizable(true)]
		[LocalizedCategory("Category.Docking")]
		[LocalizedDescription("DockContent.TabText.Description")]
		[DefaultValue(null)]
		public string TabText
		{
			get	{	return DesignMode ? m_tabText : (m_tabText==null ? this.Text : m_tabText);	}
			set
			{
				if (m_tabText == value)
					return;

				m_tabText = value;
				if (Pane != null)
					Pane.RefreshChanges();
			}
		}
		private bool ShouldSerializeTabText()
		{
			return (m_tabText != null);
		}

		private bool m_closeButton = true;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="CloseButton"]/*'/>
		[LocalizedCategory("Category.Docking")]
		[LocalizedDescription("DockContent.CloseButton.Description")]
		[DefaultValue(true)]
		public bool CloseButton
		{
			get	{	return m_closeButton;	}
			set
			{
				if (m_closeButton == value)
					return;

				m_closeButton = value;
				if (Pane != null)
					if (Pane.ActiveContent == this)
						Pane.RefreshChanges();
			}
		}
		
		private DockPanel m_dockPanel = null;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="DockPanel"]/*'/>
		[Browsable(false)]
		public DockPanel DockPanel
		{
			get { return m_dockPanel; }
			set
			{
				if (m_dockPanel == value)
					return;

				Pane = null;

				if (m_dockPanel != null)
					m_dockPanel.RemoveContent(this);

				if (m_dockPaneTab != null)
				{
					m_dockPaneTab.Dispose();
					m_dockPaneTab = null;
				}

				if (m_autoHideTab != null)
				{
					m_autoHideTab.Dispose();
					m_autoHideTab = null;
				}

				m_dockPanel = value;

				if (m_dockPanel != null)
				{
					Size = Size.Empty;	// To reduce the screen flicker
					m_dockPanel.AddContent(this);
					TopLevel = false;
					FormBorderStyle = FormBorderStyle.None;
					ShowInTaskbar = false;
					Visible = true;
					m_dockPaneTab = DockPanel.DockPaneTabFactory.CreateDockPaneTab(this);
					m_autoHideTab = DockPanel.AutoHideTabFactory.CreateAutoHideTab(this);
				}

				RefreshMdiIntegration();
			}
		}

		private DockState DefaultShowState
		{
			get
			{
				if (ShowHint != DockState.Unknown)
					return ShowHint;

				if ((DockableAreas & DockAreas.Document) != 0)
					return DockState.Document;
				if ((DockableAreas & DockAreas.DockRight) != 0)
					return DockState.DockRight;
				if ((DockableAreas & DockAreas.DockLeft) != 0)
					return DockState.DockLeft;
				if ((DockableAreas & DockAreas.DockBottom) != 0)
					return DockState.DockBottom;
				if ((DockableAreas & DockAreas.DockTop) != 0)
					return DockState.DockTop;
				if ((DockableAreas & DockAreas.Float) != 0)
					return DockState.Float;

				return DockState.Unknown;
			}
		}

		private DockState DefaultDockState
		{
			get
			{
				if (ShowHint != DockState.Unknown && ShowHint != DockState.Hidden && ShowHint != DockState.Float)
					return ShowHint;

				if ((DockableAreas & DockAreas.Document) != 0)
					return DockState.Document;
				if ((DockableAreas & DockAreas.DockRight) != 0)
					return DockState.DockRight;
				if ((DockableAreas & DockAreas.DockLeft) != 0)
					return DockState.DockLeft;
				if ((DockableAreas & DockAreas.DockBottom) != 0)
					return DockState.DockBottom;
				if ((DockableAreas & DockAreas.DockTop) != 0)
					return DockState.DockTop;

				return DockState.Unknown;
			}
		}

		private DockState m_dockState = DockState.Unknown;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="DockState"]/*'/>
		[Browsable(false)]
		public DockState DockState
		{
			get	{	return m_dockState;	}
			set
			{
				if (m_dockState == value)
					return;

				if (value == DockState.Hidden)
					IsHidden = true;
				else
					SetDockState(false, value, Pane);
			}
		}

		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="Pane"]/*'/>
		public DockPane Pane
		{
			get {	return IsFloat ? FloatPane : PanelPane; }
			set
			{
				if (Pane == value)
					return;

				DockPane oldPane = Pane;

				SuspendSetDockState();
				FloatPane = (value == null ? null : (value.IsFloat ? value : FloatPane));
				PanelPane = (value == null ? null : (value.IsFloat ? PanelPane : value));
				ResumeSetDockState(IsHidden, value != null ? value.DockState : DockState.Unknown, oldPane);
			}
		}

		private bool m_isHidden = false;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="IsHidden"]/*'/>
		[Browsable(false)]
		public bool IsHidden
		{
			get	{	return m_isHidden;	}
			set
			{
				if (m_isHidden == value)
					return;

				SetDockState(value, VisibleState, Pane);
			}
		}

		private DockState m_visibleState = DockState.Unknown;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="VisibleState"]/*'/>
		[Browsable(false)]
		public DockState VisibleState
		{
			get	{	return m_visibleState;	}
			set
			{
				if (m_visibleState == value)
					return;

				SetDockState(IsHidden, value, Pane);
			}
		}

		private bool m_isFloat = false;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="IsFloat"]/*'/>
		[Browsable(false)]
		public bool IsFloat
		{
			get	{	return m_isFloat;	}
			set
			{
				DockState visibleState;

				if (m_isFloat == value)
					return;

				DockPane oldPane = Pane;

				if (value)
				{
					if (!IsDockStateValid(DockState.Float))
						throw new InvalidOperationException(ResourceHelper.GetString("DockContent.IsFloat.InvalidValue"));
					visibleState = DockState.Float;
				}
				else
					visibleState = (PanelPane != null) ? PanelPane.DockState : DefaultDockState;

				if (visibleState == DockState.Unknown)
					throw new InvalidOperationException(ResourceHelper.GetString("DockContent.IsFloat.InvalidValue"));

				SetDockState(IsHidden, visibleState, oldPane);
			}
		}

		private DockPane m_panelPane = null;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="PanelPane"]/*'/>
		[Browsable(false)]
		public DockPane PanelPane
		{
			get	{	return m_panelPane;	}
			set
			{
				if (m_panelPane == value)
					return;

				if (value != null)
				{
					if (value.IsFloat || value.DockPanel != DockPanel)
						throw new InvalidOperationException(ResourceHelper.GetString("DockContent.DockPane.InvalidValue"));
				}

				DockPane oldPane = Pane;

				if (m_panelPane != null)
					m_panelPane.RemoveContent(this);

				m_panelPane = value;
				if (m_panelPane != null)
				{
					m_panelPane.AddContent(this);
					SetDockState(IsHidden, IsFloat ? DockState.Float : m_panelPane.DockState, oldPane);
				}
				else
					SetDockState(IsHidden, DockState.Unknown, oldPane);
			}
		}

		private DockPane m_floatPane = null;
		/// <include file='CodeDoc\DockContent.xml' path='//CodeDoc/Class[@name="DockContent"]/Property[@name="FloatPane"]/*'/>
		[Browsable(false)]
		public DockPane FloatPane
		{
			get	{	return m_floatPane;	}
			set
			{
				if (m_floatPane == value)
					return;

				if (value != null)
				{
					if (!value.IsFloat || value.DockPanel != DockPanel)
						throw new InvalidOperationException(ResourceHelper.GetString("DockContent.FloatPane.InvalidValue"));
				}

				DockPane oldPane = Pane;

				if (m_floatPane != null)
					m_floatPane.RemoveContent(this);

				m_floatPane = value;
				if (m_floatPane != null)
				{
					m_floatPane.AddContent(this);
					SetDockState(IsHidden, IsFloat ? DockState.Float : VisibleState, oldPane);
				}
				else
					SetDockState(IsHidden, DockState.Unknown, oldPane);
			}
		}

		private int m_countSetDockState = 0;
		private void SuspendSetDockState()
		{
			m_countSetDockState ++;
		}

		private void ResumeSetDockState()
		{
			m_countSetDockState --;
			if (m_countSetDockState < 0)
				m_countSetDockState = 0;
		}

		private void ResumeSetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
		{
			ResumeSetDockState();
			SetDockState(isHidden, visibleState, oldPane);
		}

		internal void SetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
		{
			if (m_countSetDockState != 0)
				return;

			if (DockPanel == null && visibleState != DockState.Unknown)
				throw new InvalidOperationException(ResourceHelper.GetString("DockContent.SetDockState.NullPanel"));