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source: stable/HeuristicLab.ExtLibs/HeuristicLab.WinFormsUI/2.7.0/WinFormsUI-2.7.0/Docking/DockContentHandler.cs @ 10700

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Last change on this file since 10700 was 8616, checked in by mkommend, 12 years ago
#1939: Added DockPanelSuite 2.7.0 to ExtLibs.
File size: 30.1 KB

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1	using System;
2	using System.Windows.Forms;
3	using System.Drawing;
4	using System.ComponentModel;
5	using System.Diagnostics.CodeAnalysis;
6
7	namespace WeifenLuo.WinFormsUI.Docking
8	{
9	public delegate string GetPersistStringCallback();
10
11	public class DockContentHandler : IDisposable, IDockDragSource
12	{
13	public DockContentHandler(Form form) : this(form, null)
14	{
15	}
16
17	public DockContentHandler(Form form, GetPersistStringCallback getPersistStringCallback)
18	{
19	if (!(form is IDockContent))
20	throw new ArgumentException(Strings.DockContent_Constructor_InvalidForm, "form");
21
22	m_form = form;
23	m_getPersistStringCallback = getPersistStringCallback;
24
25	m_events = new EventHandlerList();
26	Form.Disposed +=new EventHandler(Form_Disposed);
27	Form.TextChanged += new EventHandler(Form_TextChanged);
28	}
29
30	public void Dispose()
31	{
32	Dispose(true);
33	GC.SuppressFinalize(this);
34	}
35
36	protected virtual void Dispose(bool disposing)
37	{
38	if(disposing)
39	{
40	lock(this)
41	{
42	DockPanel = null;
43	if (m_autoHideTab != null)
44	m_autoHideTab.Dispose();
45	if (m_tab != null)
46	m_tab.Dispose();
47
48	Form.Disposed -= new EventHandler(Form_Disposed);
49	Form.TextChanged -= new EventHandler(Form_TextChanged);
50	m_events.Dispose();
51	}
52	}
53	}
54
55	private Form m_form;
56	public Form Form
57	{
58	get { return m_form; }
59	}
60
61	public IDockContent Content
62	{
63	get { return Form as IDockContent; }
64	}
65
66	private IDockContent m_previousActive = null;
67	public IDockContent PreviousActive
68	{
69	get { return m_previousActive; }
70	internal set { m_previousActive = value; }
71	}
72
73	private IDockContent m_nextActive = null;
74	public IDockContent NextActive
75	{
76	get { return m_nextActive; }
77	internal set { m_nextActive = value; }
78	}
79
80	private EventHandlerList m_events;
81	private EventHandlerList Events
82	{
83	get { return m_events; }
84	}
85
86	private bool m_allowEndUserDocking = true;
87	public bool AllowEndUserDocking
88	{
89	get { return m_allowEndUserDocking; }
90	set { m_allowEndUserDocking = value; }
91	}
92
93	private double m_autoHidePortion = 0.25;
94	public double AutoHidePortion
95	{
96	get { return m_autoHidePortion; }
97	set
98	{
99	if (value <= 0)
100	throw(new ArgumentOutOfRangeException(Strings.DockContentHandler_AutoHidePortion_OutOfRange));
101
102	if (m_autoHidePortion == value)
103	return;
104
105	m_autoHidePortion = value;
106
107	if (DockPanel == null)
108	return;
109
110	if (DockPanel.ActiveAutoHideContent == Content)
111	DockPanel.PerformLayout();
112	}
113	}
114
115	private bool m_closeButton = true;
116	public bool CloseButton
117	{
118	get { return m_closeButton; }
119	set
120	{
121	if (m_closeButton == value)
122	return;
123
124	m_closeButton = value;
125	if (Pane != null)
126	if (Pane.ActiveContent.DockHandler == this)
127	Pane.RefreshChanges();
128	}
129	}
130
131	private bool m_closeButtonVisible = true;
132	/// <summary>
133	/// Determines whether the close button is visible on the content
134	/// </summary>
135	public bool CloseButtonVisible
136	{
137	get { return m_closeButtonVisible; }
138	set { m_closeButtonVisible = value; }
139	}
140
141	private DockState DefaultDockState
142	{
143	get
144	{
145	if (ShowHint != DockState.Unknown && ShowHint != DockState.Hidden)
146	return ShowHint;
147
148	if ((DockAreas & DockAreas.Document) != 0)
149	return DockState.Document;
150	if ((DockAreas & DockAreas.DockRight) != 0)
151	return DockState.DockRight;
152	if ((DockAreas & DockAreas.DockLeft) != 0)
153	return DockState.DockLeft;
154	if ((DockAreas & DockAreas.DockBottom) != 0)
155	return DockState.DockBottom;
156	if ((DockAreas & DockAreas.DockTop) != 0)
157	return DockState.DockTop;
158
159	return DockState.Unknown;
160	}
161	}
162
163	private DockState DefaultShowState
164	{
165	get
166	{
167	if (ShowHint != DockState.Unknown)
168	return ShowHint;
169
170	if ((DockAreas & DockAreas.Document) != 0)
171	return DockState.Document;
172	if ((DockAreas & DockAreas.DockRight) != 0)
173	return DockState.DockRight;
174	if ((DockAreas & DockAreas.DockLeft) != 0)
175	return DockState.DockLeft;
176	if ((DockAreas & DockAreas.DockBottom) != 0)
177	return DockState.DockBottom;
178	if ((DockAreas & DockAreas.DockTop) != 0)
179	return DockState.DockTop;
180	if ((DockAreas & DockAreas.Float) != 0)
181	return DockState.Float;
182
183	return DockState.Unknown;
184	}
185	}
186
187	private DockAreas m_allowedAreas = DockAreas.DockLeft \| DockAreas.DockRight \| DockAreas.DockTop \| DockAreas.DockBottom \| DockAreas.Document \| DockAreas.Float;
188	public DockAreas DockAreas
189	{
190	get { return m_allowedAreas; }
191	set
192	{
193	if (m_allowedAreas == value)
194	return;
195
196	if (!DockHelper.IsDockStateValid(DockState, value))
197	throw(new InvalidOperationException(Strings.DockContentHandler_DockAreas_InvalidValue));
198
199	m_allowedAreas = value;
200
201	if (!DockHelper.IsDockStateValid(ShowHint, m_allowedAreas))
202	ShowHint = DockState.Unknown;
203	}
204	}
205
206	private DockState m_dockState = DockState.Unknown;
207	public DockState DockState
208	{
209	get { return m_dockState; }
210	set
211	{
212	if (m_dockState == value)
213	return;
214
215	DockPanel.SuspendLayout(true);
216
217	if (value == DockState.Hidden)
218	IsHidden = true;
219	else
220	SetDockState(false, value, Pane);
221
222	DockPanel.ResumeLayout(true, true);
223	}
224	}
225
226	private DockPanel m_dockPanel = null;
227	public DockPanel DockPanel
228	{
229	get { return m_dockPanel; }
230	set
231	{
232	if (m_dockPanel == value)
233	return;
234
235	Pane = null;
236
237	if (m_dockPanel != null)
238	m_dockPanel.RemoveContent(Content);
239
240	if (m_tab != null)
241	{
242	m_tab.Dispose();
243	m_tab = null;
244	}
245
246	if (m_autoHideTab != null)
247	{
248	m_autoHideTab.Dispose();
249	m_autoHideTab = null;
250	}
251
252	m_dockPanel = value;
253
254	if (m_dockPanel != null)
255	{
256	m_dockPanel.AddContent(Content);
257	Form.TopLevel = false;
258	Form.FormBorderStyle = FormBorderStyle.None;
259	Form.ShowInTaskbar = false;
260	Form.WindowState = FormWindowState.Normal;
261	if (!Win32Helper.IsRunningOnMono)
262	NativeMethods.SetWindowPos(Form.Handle, IntPtr.Zero, 0, 0, 0, 0,
263	Win32.FlagsSetWindowPos.SWP_NOACTIVATE \|
264	Win32.FlagsSetWindowPos.SWP_NOMOVE \|
265	Win32.FlagsSetWindowPos.SWP_NOSIZE \|
266	Win32.FlagsSetWindowPos.SWP_NOZORDER \|
267	Win32.FlagsSetWindowPos.SWP_NOOWNERZORDER \|
268	Win32.FlagsSetWindowPos.SWP_FRAMECHANGED);
269	}
270	}
271	}
272
273	public Icon Icon
274	{
275	get { return Form.Icon; }
276	}
277
278	public DockPane Pane
279	{
280	get { return IsFloat ? FloatPane : PanelPane; }
281	set
282	{
283	if (Pane == value)
284	return;
285
286	DockPanel.SuspendLayout(true);
287
288	DockPane oldPane = Pane;
289
290	SuspendSetDockState();
291	FloatPane = (value == null ? null : (value.IsFloat ? value : FloatPane));
292	PanelPane = (value == null ? null : (value.IsFloat ? PanelPane : value));
293	ResumeSetDockState(IsHidden, value != null ? value.DockState : DockState.Unknown, oldPane);
294
295	DockPanel.ResumeLayout(true, true);
296	}
297	}
298
299	private bool m_isHidden = true;
300	public bool IsHidden
301	{
302	get { return m_isHidden; }
303	set
304	{
305	if (m_isHidden == value)
306	return;
307
308	SetDockState(value, VisibleState, Pane);
309	}
310	}
311
312	private string m_tabText = null;
313	public string TabText
314	{
315	get { return m_tabText == null \|\| m_tabText == "" ? Form.Text : m_tabText; }
316	set
317	{
318	if (m_tabText == value)
319	return;
320
321	m_tabText = value;
322	if (Pane != null)
323	Pane.RefreshChanges();
324	}
325	}
326
327	private DockState m_visibleState = DockState.Unknown;
328	public DockState VisibleState
329	{
330	get { return m_visibleState; }
331	set
332	{
333	if (m_visibleState == value)
334	return;
335
336	SetDockState(IsHidden, value, Pane);
337	}
338	}
339
340	private bool m_isFloat = false;
341	public bool IsFloat
342	{
343	get { return m_isFloat; }
344	set
345	{
346	if (m_isFloat == value)
347	return;
348
349	DockState visibleState = CheckDockState(value);
350
351	if (visibleState == DockState.Unknown)
352	throw new InvalidOperationException(Strings.DockContentHandler_IsFloat_InvalidValue);
353
354	SetDockState(IsHidden, visibleState, Pane);
355	}
356	}
357
358	[SuppressMessage("Microsoft.Naming", "CA1720:AvoidTypeNamesInParameters")]
359	public DockState CheckDockState(bool isFloat)
360	{
361	DockState dockState;
362
363	if (isFloat)
364	{
365	if (!IsDockStateValid(DockState.Float))
366	dockState = DockState.Unknown;
367	else
368	dockState = DockState.Float;
369	}
370	else
371	{
372	dockState = (PanelPane != null) ? PanelPane.DockState : DefaultDockState;
373	if (dockState != DockState.Unknown && !IsDockStateValid(dockState))
374	dockState = DockState.Unknown;
375	}
376
377	return dockState;
378	}
379
380	private DockPane m_panelPane = null;
381	public DockPane PanelPane
382	{
383	get { return m_panelPane; }
384	set
385	{
386	if (m_panelPane == value)
387	return;
388
389	if (value != null)
390	{
391	if (value.IsFloat \|\| value.DockPanel != DockPanel)
392	throw new InvalidOperationException(Strings.DockContentHandler_DockPane_InvalidValue);
393	}
394
395	DockPane oldPane = Pane;
396
397	if (m_panelPane != null)
398	RemoveFromPane(m_panelPane);
399	m_panelPane = value;
400	if (m_panelPane != null)
401	{
402	m_panelPane.AddContent(Content);
403	SetDockState(IsHidden, IsFloat ? DockState.Float : m_panelPane.DockState, oldPane);
404	}
405	else
406	SetDockState(IsHidden, DockState.Unknown, oldPane);
407	}
408	}
409
410	private void RemoveFromPane(DockPane pane)
411	{
412	pane.RemoveContent(Content);
413	SetPane(null);
414	if (pane.Contents.Count == 0)
415	pane.Dispose();
416	}
417
418	private DockPane m_floatPane = null;
419	public DockPane FloatPane
420	{
421	get { return m_floatPane; }
422	set
423	{
424	if (m_floatPane == value)
425	return;
426
427	if (value != null)
428	{
429	if (!value.IsFloat \|\| value.DockPanel != DockPanel)
430	throw new InvalidOperationException(Strings.DockContentHandler_FloatPane_InvalidValue);
431	}
432
433	DockPane oldPane = Pane;
434
435	if (m_floatPane != null)
436	RemoveFromPane(m_floatPane);
437	m_floatPane = value;
438	if (m_floatPane != null)
439	{
440	m_floatPane.AddContent(Content);
441	SetDockState(IsHidden, IsFloat ? DockState.Float : VisibleState, oldPane);
442	}
443	else
444	SetDockState(IsHidden, DockState.Unknown, oldPane);
445	}
446	}
447
448	private int m_countSetDockState = 0;
449	private void SuspendSetDockState()
450	{
451	m_countSetDockState ++;
452	}
453
454	private void ResumeSetDockState()
455	{
456	m_countSetDockState --;
457	if (m_countSetDockState < 0)
458	m_countSetDockState = 0;
459	}
460
461	internal bool IsSuspendSetDockState
462	{
463	get { return m_countSetDockState != 0; }
464	}
465
466	private void ResumeSetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
467	{
468	ResumeSetDockState();
469	SetDockState(isHidden, visibleState, oldPane);
470	}
471
472	internal void SetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
473	{
474	if (IsSuspendSetDockState)
475	return;
476
477	if (DockPanel == null && visibleState != DockState.Unknown)
478	throw new InvalidOperationException(Strings.DockContentHandler_SetDockState_NullPanel);
479
480	if (visibleState == DockState.Hidden \|\| (visibleState != DockState.Unknown && !IsDockStateValid(visibleState)))
481	throw new InvalidOperationException(Strings.DockContentHandler_SetDockState_InvalidState);
482
483	DockPanel dockPanel = DockPanel;
484	if (dockPanel != null)
485	dockPanel.SuspendLayout(true);
486
487	SuspendSetDockState();
488
489	DockState oldDockState = DockState;
490
491	if (m_isHidden != isHidden \|\| oldDockState == DockState.Unknown)
492	{
493	m_isHidden = isHidden;
494	}
495	m_visibleState = visibleState;
496	m_dockState = isHidden ? DockState.Hidden : visibleState;
497
498	if (visibleState == DockState.Unknown)
499	Pane = null;
500	else
501	{
502	m_isFloat = (m_visibleState == DockState.Float);
503
504	if (Pane == null)
505	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, visibleState, true);
506	else if (Pane.DockState != visibleState)
507	{
508	if (Pane.Contents.Count == 1)
509	Pane.SetDockState(visibleState);
510	else
511	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, visibleState, true);
512	}
513	}
514
515	if (Form.ContainsFocus)
516	if (DockState == DockState.Hidden \|\| DockState == DockState.Unknown)
517	if (!Win32Helper.IsRunningOnMono)
518	DockPanel.ContentFocusManager.GiveUpFocus(Content);
519
520	SetPaneAndVisible(Pane);
521
522	if (oldPane != null && !oldPane.IsDisposed && oldDockState == oldPane.DockState)
523	RefreshDockPane(oldPane);
524
525	if (Pane != null && DockState == Pane.DockState)
526	{
527	if ((Pane != oldPane) \|\|
528	(Pane == oldPane && oldDockState != oldPane.DockState))
529	// Avoid early refresh of hidden AutoHide panes
530	if ((Pane.DockWindow == null \|\| Pane.DockWindow.Visible \|\| Pane.IsHidden) && !Pane.IsAutoHide)
531	RefreshDockPane(Pane);
532	}
533
534	if (oldDockState != DockState)
535	{
536	if (DockState == DockState.Hidden \|\| DockState == DockState.Unknown \|\|
537	DockHelper.IsDockStateAutoHide(DockState))
538	if (!Win32Helper.IsRunningOnMono)
539	DockPanel.ContentFocusManager.RemoveFromList(Content);
540	else
541	if (!Win32Helper.IsRunningOnMono)
542	DockPanel.ContentFocusManager.AddToList(Content);
543
544	OnDockStateChanged(EventArgs.Empty);
545	}
546	ResumeSetDockState();
547
548	if (dockPanel != null)
549	dockPanel.ResumeLayout(true, true);
550	}
551
552	private static void RefreshDockPane(DockPane pane)
553	{
554	pane.RefreshChanges();
555	pane.ValidateActiveContent();
556	}
557
558	internal string PersistString
559	{
560	get { return GetPersistStringCallback == null ? Form.GetType().ToString() : GetPersistStringCallback(); }
561	}
562
563	private GetPersistStringCallback m_getPersistStringCallback = null;
564	public GetPersistStringCallback GetPersistStringCallback
565	{
566	get { return m_getPersistStringCallback; }
567	set { m_getPersistStringCallback = value; }
568	}
569
570
571	private bool m_hideOnClose = false;
572	public bool HideOnClose
573	{
574	get { return m_hideOnClose; }
575	set { m_hideOnClose = value; }
576	}
577
578	private DockState m_showHint = DockState.Unknown;
579	public DockState ShowHint
580	{
581	get { return m_showHint; }
582	set
583	{
584	if (!DockHelper.IsDockStateValid(value, DockAreas))
585	throw (new InvalidOperationException(Strings.DockContentHandler_ShowHint_InvalidValue));
586
587	if (m_showHint == value)
588	return;
589
590	m_showHint = value;
591	}
592	}
593
594	private bool m_isActivated = false;
595	public bool IsActivated
596	{
597	get { return m_isActivated; }
598	internal set
599	{
600	if (m_isActivated == value)
601	return;
602
603	m_isActivated = value;
604	}
605	}
606
607	public bool IsDockStateValid(DockState dockState)
608	{
609	if (DockPanel != null && dockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.SystemMdi)
610	return false;
611	else
612	return DockHelper.IsDockStateValid(dockState, DockAreas);
613	}
614
615	private ContextMenu m_tabPageContextMenu = null;
616	public ContextMenu TabPageContextMenu
617	{
618	get { return m_tabPageContextMenu; }
619	set { m_tabPageContextMenu = value; }
620	}
621
622	private string m_toolTipText = null;
623	public string ToolTipText
624	{
625	get { return m_toolTipText; }
626	set { m_toolTipText = value; }
627	}
628
629	public void Activate()
630	{
631	if (DockPanel == null)
632	Form.Activate();
633	else if (Pane == null)
634	Show(DockPanel);
635	else
636	{
637	IsHidden = false;
638	Pane.ActiveContent = Content;
639	if (DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.SystemMdi)
640	{
641	Form.Activate();
642	return;
643	}
644	else if (DockHelper.IsDockStateAutoHide(DockState))
645	{
646	if (DockPanel.ActiveAutoHideContent != Content)
647	{
648	DockPanel.ActiveAutoHideContent = null;
649	return;
650	}
651	}
652
653	if (!Form.ContainsFocus)
654	if (!Win32Helper.IsRunningOnMono)
655	DockPanel.ContentFocusManager.Activate(Content);
656	}
657	}
658
659	public void GiveUpFocus()
660	{
661	if (!Win32Helper.IsRunningOnMono)
662	DockPanel.ContentFocusManager.GiveUpFocus(Content);
663	}
664
665	private IntPtr m_activeWindowHandle = IntPtr.Zero;
666	internal IntPtr ActiveWindowHandle
667	{
668	get { return m_activeWindowHandle; }
669	set { m_activeWindowHandle = value; }
670	}
671
672	public void Hide()
673	{
674	IsHidden = true;
675	}
676
677	internal void SetPaneAndVisible(DockPane pane)
678	{
679	SetPane(pane);
680	SetVisible();
681	}
682
683	private void SetPane(DockPane pane)
684	{
685	if (pane != null && pane.DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.DockingMdi)
686	{
687	if (Form.Parent is DockPane)
688	SetParent(null);
689	if (Form.MdiParent != DockPanel.ParentForm)
690	{
691	FlagClipWindow = true;
692	Form.MdiParent = DockPanel.ParentForm;
693	}
694	}
695	else
696	{
697	FlagClipWindow = true;
698	if (Form.MdiParent != null)
699	Form.MdiParent = null;
700	if (Form.TopLevel)
701	Form.TopLevel = false;
702	SetParent(pane);
703	}
704	}
705
706	internal void SetVisible()
707	{
708	bool visible;
709
710	if (IsHidden)
711	visible = false;
712	else if (Pane != null && Pane.DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.DockingMdi)
713	visible = true;
714	else if (Pane != null && Pane.ActiveContent == Content)
715	visible = true;
716	else if (Pane != null && Pane.ActiveContent != Content)
717	visible = false;
718	else
719	visible = Form.Visible;
720
721	if (Form.Visible != visible)
722	Form.Visible = visible;
723	}
724
725	private void SetParent(Control value)
726	{
727	if (Form.Parent == value)
728	return;
729
730	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
731	// Workaround of .Net Framework bug:
732	// Change the parent of a control with focus may result in the first
733	// MDI child form get activated.
734	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
735	bool bRestoreFocus = false;
736	if (Form.ContainsFocus)
737	{
738	//Suggested as a fix for a memory leak by bugreports
739	if (value == null && !IsFloat)
740	if (!Win32Helper.IsRunningOnMono)
741	DockPanel.ContentFocusManager.GiveUpFocus(this.Content);
742	else
743	{
744	DockPanel.SaveFocus();
745	bRestoreFocus = true;
746	}
747	}
748	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
749
750	Form.Parent = value;
751
752	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
753	// Workaround of .Net Framework bug:
754	// Change the parent of a control with focus may result in the first
755	// MDI child form get activated.
756	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
757	if (bRestoreFocus)
758	Activate();
759	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
760	}
761
762	public void Show()
763	{
764	if (DockPanel == null)
765	Form.Show();
766	else
767	Show(DockPanel);
768	}
769
770	public void Show(DockPanel dockPanel)
771	{
772	if (dockPanel == null)
773	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
774
775	if (DockState == DockState.Unknown)
776	Show(dockPanel, DefaultShowState);
777	else
778	Activate();
779	}
780
781	public void Show(DockPanel dockPanel, DockState dockState)
782	{
783	if (dockPanel == null)
784	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
785
786	if (dockState == DockState.Unknown \|\| dockState == DockState.Hidden)
787	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidDockState));
788
789	dockPanel.SuspendLayout(true);
790
791	DockPanel = dockPanel;
792
793	if (dockState == DockState.Float && FloatPane == null)
794	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Float, true);
795	else if (PanelPane == null)
796	{
797	DockPane paneExisting = null;
798	foreach (DockPane pane in DockPanel.Panes)
799	if (pane.DockState == dockState)
800	{
801	paneExisting = pane;
802	break;
803	}
804
805	if (paneExisting == null)
806	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, dockState, true);
807	else
808	Pane = paneExisting;
809	}
810
811	DockState = dockState;
812	dockPanel.ResumeLayout(true, true); //we'll resume the layout before activating to ensure that the position
813	Activate(); //and size of the form are finally processed before the form is shown
814	}
815
816	[SuppressMessage("Microsoft.Naming", "CA1720:AvoidTypeNamesInParameters")]
817	public void Show(DockPanel dockPanel, Rectangle floatWindowBounds)
818	{
819	if (dockPanel == null)
820	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
821
822	dockPanel.SuspendLayout(true);
823
824	DockPanel = dockPanel;
825	if (FloatPane == null)
826	{
827	IsHidden = true; // to reduce the screen flicker
828	FloatPane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Float, false);
829	FloatPane.FloatWindow.StartPosition = FormStartPosition.Manual;
830	}
831
832	FloatPane.FloatWindow.Bounds = floatWindowBounds;
833
834	Show(dockPanel, DockState.Float);
835	Activate();
836
837	dockPanel.ResumeLayout(true, true);
838	}
839
840	public void Show(DockPane pane, IDockContent beforeContent)
841	{
842	if (pane == null)
843	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullPane));
844
845	if (beforeContent != null && pane.Contents.IndexOf(beforeContent) == -1)
846	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidBeforeContent));
847
848	pane.DockPanel.SuspendLayout(true);
849
850	DockPanel = pane.DockPanel;
851	Pane = pane;
852	pane.SetContentIndex(Content, pane.Contents.IndexOf(beforeContent));
853	Show();
854
855	pane.DockPanel.ResumeLayout(true, true);
856	}
857
858	public void Show(DockPane previousPane, DockAlignment alignment, double proportion)
859	{
860	if (previousPane == null)
861	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidPrevPane));
862
863	if (DockHelper.IsDockStateAutoHide(previousPane.DockState))
864	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidPrevPane));
865
866	previousPane.DockPanel.SuspendLayout(true);
867
868	DockPanel = previousPane.DockPanel;
869	DockPanel.DockPaneFactory.CreateDockPane(Content, previousPane, alignment, proportion, true);
870	Show();
871
872	previousPane.DockPanel.ResumeLayout(true, true);
873	}
874
875	public void Close()
876	{
877	DockPanel dockPanel = DockPanel;
878	if (dockPanel != null)
879	dockPanel.SuspendLayout(true);
880	Form.Close();
881	if (dockPanel != null)
882	dockPanel.ResumeLayout(true, true);
883
884	}
885
886	private DockPaneStripBase.Tab m_tab = null;
887	internal DockPaneStripBase.Tab GetTab(DockPaneStripBase dockPaneStrip)
888	{
889	if (m_tab == null)
890	m_tab = dockPaneStrip.CreateTab(Content);
891
892	return m_tab;
893	}
894
895	private IDisposable m_autoHideTab = null;
896	internal IDisposable AutoHideTab
897	{
898	get { return m_autoHideTab; }
899	set { m_autoHideTab = value; }
900	}
901
902	#region Events
903	private static readonly object DockStateChangedEvent = new object();
904	public event EventHandler DockStateChanged
905	{
906	add { Events.AddHandler(DockStateChangedEvent, value); }
907	remove { Events.RemoveHandler(DockStateChangedEvent, value); }
908	}
909	protected virtual void OnDockStateChanged(EventArgs e)
910	{
911	EventHandler handler = (EventHandler)Events[DockStateChangedEvent];
912	if (handler != null)
913	handler(this, e);
914	}
915	#endregion
916
917	private void Form_Disposed(object sender, EventArgs e)
918	{
919	Dispose();
920	}
921
922	private void Form_TextChanged(object sender, EventArgs e)
923	{
924	if (DockHelper.IsDockStateAutoHide(DockState))
925	DockPanel.RefreshAutoHideStrip();
926	else if (Pane != null)
927	{
928	if (Pane.FloatWindow != null)
929	Pane.FloatWindow.SetText();
930	Pane.RefreshChanges();
931	}
932	}
933
934	private bool m_flagClipWindow = false;
935	internal bool FlagClipWindow
936	{
937	get { return m_flagClipWindow; }
938	set
939	{
940	if (m_flagClipWindow == value)
941	return;
942
943	m_flagClipWindow = value;
944	if (m_flagClipWindow)
945	Form.Region = new Region(Rectangle.Empty);
946	else
947	Form.Region = null;
948	}
949	}
950
951	private ContextMenuStrip m_tabPageContextMenuStrip = null;
952	public ContextMenuStrip TabPageContextMenuStrip
953	{
954	get { return m_tabPageContextMenuStrip; }
955	set { m_tabPageContextMenuStrip = value; }
956	}
957
958	#region IDockDragSource Members
959
960	Control IDragSource.DragControl
961	{
962	get { return Form; }
963	}
964
965	bool IDockDragSource.CanDockTo(DockPane pane)
966	{
967	if (!IsDockStateValid(pane.DockState))
968	return false;
969
970	if (Pane == pane && pane.DisplayingContents.Count == 1)
971	return false;
972
973	return true;
974	}
975
976	Rectangle IDockDragSource.BeginDrag(Point ptMouse)
977	{
978	Size size;
979	DockPane floatPane = this.FloatPane;
980	if (DockState == DockState.Float \|\| floatPane == null \|\| floatPane.FloatWindow.NestedPanes.Count != 1)
981	size = DockPanel.DefaultFloatWindowSize;
982	else
983	size = floatPane.FloatWindow.Size;
984
985	Point location;
986	Rectangle rectPane = Pane.ClientRectangle;
987	if (DockState == DockState.Document)
988	{
989	if (Pane.DockPanel.DocumentTabStripLocation == DocumentTabStripLocation.Bottom)
990	location = new Point(rectPane.Left, rectPane.Bottom - size.Height);
991	else
992	location = new Point(rectPane.Left, rectPane.Top);
993	}
994	else
995	{
996	location = new Point(rectPane.Left, rectPane.Bottom);
997	location.Y -= size.Height;
998	}
999	location = Pane.PointToScreen(location);
1000
1001	if (ptMouse.X > location.X + size.Width)
1002	location.X += ptMouse.X - (location.X + size.Width) + Measures.SplitterSize;
1003
1004	return new Rectangle(location, size);
1005	}
1006
1007	void IDockDragSource.EndDrag()
1008	{
1009	}
1010
1011	public void FloatAt(Rectangle floatWindowBounds)
1012	{
1013	DockPane pane = DockPanel.DockPaneFactory.CreateDockPane(Content, floatWindowBounds, true);
1014	}
1015
1016	public void DockTo(DockPane pane, DockStyle dockStyle, int contentIndex)
1017	{
1018	if (dockStyle == DockStyle.Fill)
1019	{
1020	bool samePane = (Pane == pane);
1021	if (!samePane)
1022	Pane = pane;
1023
1024	if (contentIndex == -1 \|\| !samePane)
1025	pane.SetContentIndex(Content, contentIndex);
1026	else
1027	{
1028	DockContentCollection contents = pane.Contents;
1029	int oldIndex = contents.IndexOf(Content);
1030	int newIndex = contentIndex;
1031	if (oldIndex < newIndex)
1032	{
1033	newIndex += 1;
1034	if (newIndex > contents.Count -1)
1035	newIndex = -1;
1036	}
1037	pane.SetContentIndex(Content, newIndex);
1038	}
1039	}
1040	else
1041	{
1042	DockPane paneFrom = DockPanel.DockPaneFactory.CreateDockPane(Content, pane.DockState, true);
1043	INestedPanesContainer container = pane.NestedPanesContainer;
1044	if (dockStyle == DockStyle.Left)
1045	paneFrom.DockTo(container, pane, DockAlignment.Left, 0.5);
1046	else if (dockStyle == DockStyle.Right)
1047	paneFrom.DockTo(container, pane, DockAlignment.Right, 0.5);
1048	else if (dockStyle == DockStyle.Top)
1049	paneFrom.DockTo(container, pane, DockAlignment.Top, 0.5);
1050	else if (dockStyle == DockStyle.Bottom)
1051	paneFrom.DockTo(container, pane, DockAlignment.Bottom, 0.5);
1052
1053	paneFrom.DockState = pane.DockState;
1054	}
1055	}
1056
1057	public void DockTo(DockPanel panel, DockStyle dockStyle)
1058	{
1059	if (panel != DockPanel)
1060	throw new ArgumentException(Strings.IDockDragSource_DockTo_InvalidPanel, "panel");
1061
1062	DockPane pane;
1063
1064	if (dockStyle == DockStyle.Top)
1065	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockTop, true);
1066	else if (dockStyle == DockStyle.Bottom)
1067	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockBottom, true);
1068	else if (dockStyle == DockStyle.Left)
1069	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockLeft, true);
1070	else if (dockStyle == DockStyle.Right)
1071	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockRight, true);
1072	else if (dockStyle == DockStyle.Fill)
1073	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Document, true);
1074	else
1075	return;
1076	}
1077
1078	#endregion
1079	}
1080	}

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