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source: branches/CEDMA-Exporter-715/sources/WinFormsUI/Docking/DockContentHandler.cs @ 2716

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Last change on this file since 2716 was 2134, checked in by gkronber, 15 years ago
Added up to date source of Weifen Luo dock panel suit in a separate project (and added strong name key). Removed binary versions of Weifen Luo dock panel suite and references to it. #687 (Update `AdvancedOptimizationFrontend` to use more recent version of Weifen Luo Docking library)
File size: 29.4 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	NativeMethods.SetWindowPos(Form.Handle, IntPtr.Zero, 0, 0, 0, 0,
262	Win32.FlagsSetWindowPos.SWP_NOACTIVATE \|
263	Win32.FlagsSetWindowPos.SWP_NOMOVE \|
264	Win32.FlagsSetWindowPos.SWP_NOSIZE \|
265	Win32.FlagsSetWindowPos.SWP_NOZORDER \|
266	Win32.FlagsSetWindowPos.SWP_NOOWNERZORDER \|
267	Win32.FlagsSetWindowPos.SWP_FRAMECHANGED);
268	}
269	}
270	}
271
272	public Icon Icon
273	{
274	get { return Form.Icon; }
275	}
276
277	public DockPane Pane
278	{
279	get { return IsFloat ? FloatPane : PanelPane; }
280	set
281	{
282	if (Pane == value)
283	return;
284
285	DockPanel.SuspendLayout(true);
286
287	DockPane oldPane = Pane;
288
289	SuspendSetDockState();
290	FloatPane = (value == null ? null : (value.IsFloat ? value : FloatPane));
291	PanelPane = (value == null ? null : (value.IsFloat ? PanelPane : value));
292	ResumeSetDockState(IsHidden, value != null ? value.DockState : DockState.Unknown, oldPane);
293
294	DockPanel.ResumeLayout(true, true);
295	}
296	}
297
298	private bool m_isHidden = true;
299	public bool IsHidden
300	{
301	get { return m_isHidden; }
302	set
303	{
304	if (m_isHidden == value)
305	return;
306
307	SetDockState(value, VisibleState, Pane);
308	}
309	}
310
311	private string m_tabText = null;
312	public string TabText
313	{
314	get { return m_tabText == null \|\| m_tabText == "" ? Form.Text : m_tabText; }
315	set
316	{
317	if (m_tabText == value)
318	return;
319
320	m_tabText = value;
321	if (Pane != null)
322	Pane.RefreshChanges();
323	}
324	}
325
326	private DockState m_visibleState = DockState.Unknown;
327	public DockState VisibleState
328	{
329	get { return m_visibleState; }
330	set
331	{
332	if (m_visibleState == value)
333	return;
334
335	SetDockState(IsHidden, value, Pane);
336	}
337	}
338
339	private bool m_isFloat = false;
340	public bool IsFloat
341	{
342	get { return m_isFloat; }
343	set
344	{
345	if (m_isFloat == value)
346	return;
347
348	DockState visibleState = CheckDockState(value);
349
350	if (visibleState == DockState.Unknown)
351	throw new InvalidOperationException(Strings.DockContentHandler_IsFloat_InvalidValue);
352
353	SetDockState(IsHidden, visibleState, Pane);
354	}
355	}
356
357	[SuppressMessage("Microsoft.Naming", "CA1720:AvoidTypeNamesInParameters")]
358	public DockState CheckDockState(bool isFloat)
359	{
360	DockState dockState;
361
362	if (isFloat)
363	{
364	if (!IsDockStateValid(DockState.Float))
365	dockState = DockState.Unknown;
366	else
367	dockState = DockState.Float;
368	}
369	else
370	{
371	dockState = (PanelPane != null) ? PanelPane.DockState : DefaultDockState;
372	if (dockState != DockState.Unknown && !IsDockStateValid(dockState))
373	dockState = DockState.Unknown;
374	}
375
376	return dockState;
377	}
378
379	private DockPane m_panelPane = null;
380	public DockPane PanelPane
381	{
382	get { return m_panelPane; }
383	set
384	{
385	if (m_panelPane == value)
386	return;
387
388	if (value != null)
389	{
390	if (value.IsFloat \|\| value.DockPanel != DockPanel)
391	throw new InvalidOperationException(Strings.DockContentHandler_DockPane_InvalidValue);
392	}
393
394	DockPane oldPane = Pane;
395
396	if (m_panelPane != null)
397	RemoveFromPane(m_panelPane);
398	m_panelPane = value;
399	if (m_panelPane != null)
400	{
401	m_panelPane.AddContent(Content);
402	SetDockState(IsHidden, IsFloat ? DockState.Float : m_panelPane.DockState, oldPane);
403	}
404	else
405	SetDockState(IsHidden, DockState.Unknown, oldPane);
406	}
407	}
408
409	private void RemoveFromPane(DockPane pane)
410	{
411	pane.RemoveContent(Content);
412	SetPane(null);
413	if (pane.Contents.Count == 0)
414	pane.Dispose();
415	}
416
417	private DockPane m_floatPane = null;
418	public DockPane FloatPane
419	{
420	get { return m_floatPane; }
421	set
422	{
423	if (m_floatPane == value)
424	return;
425
426	if (value != null)
427	{
428	if (!value.IsFloat \|\| value.DockPanel != DockPanel)
429	throw new InvalidOperationException(Strings.DockContentHandler_FloatPane_InvalidValue);
430	}
431
432	DockPane oldPane = Pane;
433
434	if (m_floatPane != null)
435	RemoveFromPane(m_floatPane);
436	m_floatPane = value;
437	if (m_floatPane != null)
438	{
439	m_floatPane.AddContent(Content);
440	SetDockState(IsHidden, IsFloat ? DockState.Float : VisibleState, oldPane);
441	}
442	else
443	SetDockState(IsHidden, DockState.Unknown, oldPane);
444	}
445	}
446
447	private int m_countSetDockState = 0;
448	private void SuspendSetDockState()
449	{
450	m_countSetDockState ++;
451	}
452
453	private void ResumeSetDockState()
454	{
455	m_countSetDockState --;
456	if (m_countSetDockState < 0)
457	m_countSetDockState = 0;
458	}
459
460	internal bool IsSuspendSetDockState
461	{
462	get { return m_countSetDockState != 0; }
463	}
464
465	private void ResumeSetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
466	{
467	ResumeSetDockState();
468	SetDockState(isHidden, visibleState, oldPane);
469	}
470
471	internal void SetDockState(bool isHidden, DockState visibleState, DockPane oldPane)
472	{
473	if (IsSuspendSetDockState)
474	return;
475
476	if (DockPanel == null && visibleState != DockState.Unknown)
477	throw new InvalidOperationException(Strings.DockContentHandler_SetDockState_NullPanel);
478
479	if (visibleState == DockState.Hidden \|\| (visibleState != DockState.Unknown && !IsDockStateValid(visibleState)))
480	throw new InvalidOperationException(Strings.DockContentHandler_SetDockState_InvalidState);
481
482	DockPanel dockPanel = DockPanel;
483	if (dockPanel != null)
484	dockPanel.SuspendLayout(true);
485
486	SuspendSetDockState();
487
488	DockState oldDockState = DockState;
489
490	if (m_isHidden != isHidden \|\| oldDockState == DockState.Unknown)
491	{
492	m_isHidden = isHidden;
493	}
494	m_visibleState = visibleState;
495	m_dockState = isHidden ? DockState.Hidden : visibleState;
496
497	if (visibleState == DockState.Unknown)
498	Pane = null;
499	else
500	{
501	m_isFloat = (m_visibleState == DockState.Float);
502
503	if (Pane == null)
504	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, visibleState, true);
505	else if (Pane.DockState != visibleState)
506	{
507	if (Pane.Contents.Count == 1)
508	Pane.SetDockState(visibleState);
509	else
510	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, visibleState, true);
511	}
512	}
513
514	if (Form.ContainsFocus)
515	if (DockState == DockState.Hidden \|\| DockState == DockState.Unknown)
516	DockPanel.ContentFocusManager.GiveUpFocus(Content);
517
518	SetPaneAndVisible(Pane);
519
520	if (oldPane != null && !oldPane.IsDisposed && oldDockState == oldPane.DockState)
521	RefreshDockPane(oldPane);
522
523	if (Pane != null && DockState == Pane.DockState)
524	{
525	if ((Pane != oldPane) \|\|
526	(Pane == oldPane && oldDockState != oldPane.DockState))
527	// Avoid early refresh of hidden AutoHide panes
528	if ((Pane.DockWindow == null \|\| Pane.DockWindow.Visible \|\| Pane.IsHidden) && !Pane.IsAutoHide)
529	RefreshDockPane(Pane);
530	}
531
532	if (oldDockState != DockState)
533	{
534	if (DockState == DockState.Hidden \|\| DockState == DockState.Unknown \|\|
535	DockHelper.IsDockStateAutoHide(DockState))
536	DockPanel.ContentFocusManager.RemoveFromList(Content);
537	else
538	DockPanel.ContentFocusManager.AddToList(Content);
539
540	OnDockStateChanged(EventArgs.Empty);
541	}
542	ResumeSetDockState();
543
544	if (dockPanel != null)
545	dockPanel.ResumeLayout(true, true);
546	}
547
548	private static void RefreshDockPane(DockPane pane)
549	{
550	pane.RefreshChanges();
551	pane.ValidateActiveContent();
552	}
553
554	internal string PersistString
555	{
556	get { return GetPersistStringCallback == null ? Form.GetType().ToString() : GetPersistStringCallback(); }
557	}
558
559	private GetPersistStringCallback m_getPersistStringCallback = null;
560	public GetPersistStringCallback GetPersistStringCallback
561	{
562	get { return m_getPersistStringCallback; }
563	set { m_getPersistStringCallback = value; }
564	}
565
566
567	private bool m_hideOnClose = false;
568	public bool HideOnClose
569	{
570	get { return m_hideOnClose; }
571	set { m_hideOnClose = value; }
572	}
573
574	private DockState m_showHint = DockState.Unknown;
575	public DockState ShowHint
576	{
577	get { return m_showHint; }
578	set
579	{
580	if (!DockHelper.IsDockStateValid(value, DockAreas))
581	throw (new InvalidOperationException(Strings.DockContentHandler_ShowHint_InvalidValue));
582
583	if (m_showHint == value)
584	return;
585
586	m_showHint = value;
587	}
588	}
589
590	private bool m_isActivated = false;
591	public bool IsActivated
592	{
593	get { return m_isActivated; }
594	internal set
595	{
596	if (m_isActivated == value)
597	return;
598
599	m_isActivated = value;
600	}
601	}
602
603	public bool IsDockStateValid(DockState dockState)
604	{
605	if (DockPanel != null && dockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.SystemMdi)
606	return false;
607	else
608	return DockHelper.IsDockStateValid(dockState, DockAreas);
609	}
610
611	private ContextMenu m_tabPageContextMenu = null;
612	public ContextMenu TabPageContextMenu
613	{
614	get { return m_tabPageContextMenu; }
615	set { m_tabPageContextMenu = value; }
616	}
617
618	private string m_toolTipText = null;
619	public string ToolTipText
620	{
621	get { return m_toolTipText; }
622	set { m_toolTipText = value; }
623	}
624
625	public void Activate()
626	{
627	if (DockPanel == null)
628	Form.Activate();
629	else if (Pane == null)
630	Show(DockPanel);
631	else
632	{
633	IsHidden = false;
634	Pane.ActiveContent = Content;
635	if (DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.SystemMdi)
636	{
637	Form.Activate();
638	return;
639	}
640	else if (DockHelper.IsDockStateAutoHide(DockState))
641	DockPanel.ActiveAutoHideContent = Content;
642
643	if (!Form.ContainsFocus)
644	DockPanel.ContentFocusManager.Activate(Content);
645	}
646	}
647
648	public void GiveUpFocus()
649	{
650	DockPanel.ContentFocusManager.GiveUpFocus(Content);
651	}
652
653	private IntPtr m_activeWindowHandle = IntPtr.Zero;
654	internal IntPtr ActiveWindowHandle
655	{
656	get { return m_activeWindowHandle; }
657	set { m_activeWindowHandle = value; }
658	}
659
660	public void Hide()
661	{
662	IsHidden = true;
663	}
664
665	internal void SetPaneAndVisible(DockPane pane)
666	{
667	SetPane(pane);
668	SetVisible();
669	}
670
671	private void SetPane(DockPane pane)
672	{
673	if (pane != null && pane.DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.DockingMdi)
674	{
675	if (Form.Parent is DockPane)
676	SetParent(null);
677	if (Form.MdiParent != DockPanel.ParentForm)
678	{
679	FlagClipWindow = true;
680	Form.MdiParent = DockPanel.ParentForm;
681	}
682	}
683	else
684	{
685	FlagClipWindow = true;
686	if (Form.MdiParent != null)
687	Form.MdiParent = null;
688	if (Form.TopLevel)
689	Form.TopLevel = false;
690	SetParent(pane);
691	}
692	}
693
694	internal void SetVisible()
695	{
696	bool visible;
697
698	if (IsHidden)
699	visible = false;
700	else if (Pane != null && Pane.DockState == DockState.Document && DockPanel.DocumentStyle == DocumentStyle.DockingMdi)
701	visible = true;
702	else if (Pane != null && Pane.ActiveContent == Content)
703	visible = true;
704	else if (Pane != null && Pane.ActiveContent != Content)
705	visible = false;
706	else
707	visible = Form.Visible;
708
709	if (Form.Visible != visible)
710	Form.Visible = visible;
711	}
712
713	private void SetParent(Control value)
714	{
715	if (Form.Parent == value)
716	return;
717
718	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
719	// Workaround of .Net Framework bug:
720	// Change the parent of a control with focus may result in the first
721	// MDI child form get activated.
722	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
723	bool bRestoreFocus = false;
724	if (Form.ContainsFocus)
725	{
726	//Suggested as a fix for a memory leak by bugreports
727	if (value == null && !IsFloat)
728	DockPanel.ContentFocusManager.GiveUpFocus(this.Content);
729	else
730	{
731	DockPanel.SaveFocus();
732	bRestoreFocus = true;
733	}
734	}
735	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
736
737	Form.Parent = value;
738
739	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
740	// Workaround of .Net Framework bug:
741	// Change the parent of a control with focus may result in the first
742	// MDI child form get activated.
743	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
744	if (bRestoreFocus)
745	Activate();
746	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
747	}
748
749	public void Show()
750	{
751	if (DockPanel == null)
752	Form.Show();
753	else
754	Show(DockPanel);
755	}
756
757	public void Show(DockPanel dockPanel)
758	{
759	if (dockPanel == null)
760	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
761
762	if (DockState == DockState.Unknown)
763	Show(dockPanel, DefaultShowState);
764	else
765	Activate();
766	}
767
768	public void Show(DockPanel dockPanel, DockState dockState)
769	{
770	if (dockPanel == null)
771	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
772
773	if (dockState == DockState.Unknown \|\| dockState == DockState.Hidden)
774	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidDockState));
775
776	dockPanel.SuspendLayout(true);
777
778	DockPanel = dockPanel;
779
780	if (dockState == DockState.Float && FloatPane == null)
781	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Float, true);
782	else if (PanelPane == null)
783	{
784	DockPane paneExisting = null;
785	foreach (DockPane pane in DockPanel.Panes)
786	if (pane.DockState == dockState)
787	{
788	paneExisting = pane;
789	break;
790	}
791
792	if (paneExisting == null)
793	Pane = DockPanel.DockPaneFactory.CreateDockPane(Content, dockState, true);
794	else
795	Pane = paneExisting;
796	}
797
798	DockState = dockState;
799	dockPanel.ResumeLayout(true, true); //we'll resume the layout before activating to ensure that the position
800	Activate(); //and size of the form are finally processed before the form is shown
801	}
802
803	[SuppressMessage("Microsoft.Naming", "CA1720:AvoidTypeNamesInParameters")]
804	public void Show(DockPanel dockPanel, Rectangle floatWindowBounds)
805	{
806	if (dockPanel == null)
807	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullDockPanel));
808
809	dockPanel.SuspendLayout(true);
810
811	DockPanel = dockPanel;
812	if (FloatPane == null)
813	{
814	IsHidden = true; // to reduce the screen flicker
815	FloatPane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Float, false);
816	FloatPane.FloatWindow.StartPosition = FormStartPosition.Manual;
817	}
818
819	FloatPane.FloatWindow.Bounds = floatWindowBounds;
820
821	Show(dockPanel, DockState.Float);
822	Activate();
823
824	dockPanel.ResumeLayout(true, true);
825	}
826
827	public void Show(DockPane pane, IDockContent beforeContent)
828	{
829	if (pane == null)
830	throw(new ArgumentNullException(Strings.DockContentHandler_Show_NullPane));
831
832	if (beforeContent != null && pane.Contents.IndexOf(beforeContent) == -1)
833	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidBeforeContent));
834
835	pane.DockPanel.SuspendLayout(true);
836
837	DockPanel = pane.DockPanel;
838	Pane = pane;
839	pane.SetContentIndex(Content, pane.Contents.IndexOf(beforeContent));
840	Show();
841
842	pane.DockPanel.ResumeLayout(true, true);
843	}
844
845	public void Show(DockPane previousPane, DockAlignment alignment, double proportion)
846	{
847	if (previousPane == null)
848	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidPrevPane));
849
850	if (DockHelper.IsDockStateAutoHide(previousPane.DockState))
851	throw(new ArgumentException(Strings.DockContentHandler_Show_InvalidPrevPane));
852
853	previousPane.DockPanel.SuspendLayout(true);
854
855	DockPanel = previousPane.DockPanel;
856	DockPanel.DockPaneFactory.CreateDockPane(Content, previousPane, alignment, proportion, true);
857	Show();
858
859	previousPane.DockPanel.ResumeLayout(true, true);
860	}
861
862	public void Close()
863	{
864	DockPanel dockPanel = DockPanel;
865	if (dockPanel != null)
866	dockPanel.SuspendLayout(true);
867	Form.Close();
868	if (dockPanel != null)
869	dockPanel.ResumeLayout(true, true);
870
871	}
872
873	private DockPaneStripBase.Tab m_tab = null;
874	internal DockPaneStripBase.Tab GetTab(DockPaneStripBase dockPaneStrip)
875	{
876	if (m_tab == null)
877	m_tab = dockPaneStrip.CreateTab(Content);
878
879	return m_tab;
880	}
881
882	private IDisposable m_autoHideTab = null;
883	internal IDisposable AutoHideTab
884	{
885	get { return m_autoHideTab; }
886	set { m_autoHideTab = value; }
887	}
888
889	#region Events
890	private static readonly object DockStateChangedEvent = new object();
891	public event EventHandler DockStateChanged
892	{
893	add { Events.AddHandler(DockStateChangedEvent, value); }
894	remove { Events.RemoveHandler(DockStateChangedEvent, value); }
895	}
896	protected virtual void OnDockStateChanged(EventArgs e)
897	{
898	EventHandler handler = (EventHandler)Events[DockStateChangedEvent];
899	if (handler != null)
900	handler(this, e);
901	}
902	#endregion
903
904	private void Form_Disposed(object sender, EventArgs e)
905	{
906	Dispose();
907	}
908
909	private void Form_TextChanged(object sender, EventArgs e)
910	{
911	if (DockHelper.IsDockStateAutoHide(DockState))
912	DockPanel.RefreshAutoHideStrip();
913	else if (Pane != null)
914	{
915	if (Pane.FloatWindow != null)
916	Pane.FloatWindow.SetText();
917	Pane.RefreshChanges();
918	}
919	}
920
921	private bool m_flagClipWindow = false;
922	internal bool FlagClipWindow
923	{
924	get { return m_flagClipWindow; }
925	set
926	{
927	if (m_flagClipWindow == value)
928	return;
929
930	m_flagClipWindow = value;
931	if (m_flagClipWindow)
932	Form.Region = new Region(Rectangle.Empty);
933	else
934	Form.Region = null;
935	}
936	}
937
938	private ContextMenuStrip m_tabPageContextMenuStrip = null;
939	public ContextMenuStrip TabPageContextMenuStrip
940	{
941	get { return m_tabPageContextMenuStrip; }
942	set { m_tabPageContextMenuStrip = value; }
943	}
944
945	#region IDockDragSource Members
946
947	Control IDragSource.DragControl
948	{
949	get { return Form; }
950	}
951
952	bool IDockDragSource.CanDockTo(DockPane pane)
953	{
954	if (!IsDockStateValid(pane.DockState))
955	return false;
956
957	if (Pane == pane && pane.DisplayingContents.Count == 1)
958	return false;
959
960	return true;
961	}
962
963	Rectangle IDockDragSource.BeginDrag(Point ptMouse)
964	{
965	Size size;
966	DockPane floatPane = this.FloatPane;
967	if (DockState == DockState.Float \|\| floatPane == null \|\| floatPane.FloatWindow.NestedPanes.Count != 1)
968	size = DockPanel.DefaultFloatWindowSize;
969	else
970	size = floatPane.FloatWindow.Size;
971
972	Point location;
973	Rectangle rectPane = Pane.ClientRectangle;
974	if (DockState == DockState.Document)
975	{
976	if (Pane.DockPanel.DocumentTabStripLocation == DocumentTabStripLocation.Bottom)
977	location = new Point(rectPane.Left, rectPane.Bottom - size.Height);
978	else
979	location = new Point(rectPane.Left, rectPane.Top);
980	}
981	else
982	{
983	location = new Point(rectPane.Left, rectPane.Bottom);
984	location.Y -= size.Height;
985	}
986	location = Pane.PointToScreen(location);
987
988	if (ptMouse.X > location.X + size.Width)
989	location.X += ptMouse.X - (location.X + size.Width) + Measures.SplitterSize;
990
991	return new Rectangle(location, size);
992	}
993
994	public void FloatAt(Rectangle floatWindowBounds)
995	{
996	DockPane pane = DockPanel.DockPaneFactory.CreateDockPane(Content, floatWindowBounds, true);
997	}
998
999	public void DockTo(DockPane pane, DockStyle dockStyle, int contentIndex)
1000	{
1001	if (dockStyle == DockStyle.Fill)
1002	{
1003	bool samePane = (Pane == pane);
1004	if (!samePane)
1005	Pane = pane;
1006
1007	if (contentIndex == -1 \|\| !samePane)
1008	pane.SetContentIndex(Content, contentIndex);
1009	else
1010	{
1011	DockContentCollection contents = pane.Contents;
1012	int oldIndex = contents.IndexOf(Content);
1013	int newIndex = contentIndex;
1014	if (oldIndex < newIndex)
1015	{
1016	newIndex += 1;
1017	if (newIndex > contents.Count -1)
1018	newIndex = -1;
1019	}
1020	pane.SetContentIndex(Content, newIndex);
1021	}
1022	}
1023	else
1024	{
1025	DockPane paneFrom = DockPanel.DockPaneFactory.CreateDockPane(Content, pane.DockState, true);
1026	INestedPanesContainer container = pane.NestedPanesContainer;
1027	if (dockStyle == DockStyle.Left)
1028	paneFrom.DockTo(container, pane, DockAlignment.Left, 0.5);
1029	else if (dockStyle == DockStyle.Right)
1030	paneFrom.DockTo(container, pane, DockAlignment.Right, 0.5);
1031	else if (dockStyle == DockStyle.Top)
1032	paneFrom.DockTo(container, pane, DockAlignment.Top, 0.5);
1033	else if (dockStyle == DockStyle.Bottom)
1034	paneFrom.DockTo(container, pane, DockAlignment.Bottom, 0.5);
1035
1036	paneFrom.DockState = pane.DockState;
1037	}
1038	}
1039
1040	public void DockTo(DockPanel panel, DockStyle dockStyle)
1041	{
1042	if (panel != DockPanel)
1043	throw new ArgumentException(Strings.IDockDragSource_DockTo_InvalidPanel, "panel");
1044
1045	DockPane pane;
1046
1047	if (dockStyle == DockStyle.Top)
1048	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockTop, true);
1049	else if (dockStyle == DockStyle.Bottom)
1050	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockBottom, true);
1051	else if (dockStyle == DockStyle.Left)
1052	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockLeft, true);
1053	else if (dockStyle == DockStyle.Right)
1054	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.DockRight, true);
1055	else if (dockStyle == DockStyle.Fill)
1056	pane = DockPanel.DockPaneFactory.CreateDockPane(Content, DockState.Document, true);
1057	else
1058	return;
1059	}
1060
1061	#endregion
1062	}
1063	}

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