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source: stable/HeuristicLab.MainForm.WindowsForms/3.3/MainForms/MainForm.cs @ 9933

Last change on this file since 9933 was 9933, checked in by ascheibe, 11 years ago

#1042 merged r9849, r9851, r9865, r9867, r9868, r9893, r9894, r9895, r9896, r9900, r9901, r9905, r9907 into stable branch

File size: 21.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Linq;
25using System.Windows.Forms;
26using HeuristicLab.Common;
27using HeuristicLab.PluginInfrastructure;
28using WeifenLuo.WinFormsUI.Docking;
29
30namespace HeuristicLab.MainForm.WindowsForms {
31  public partial class MainForm : Form, IMainForm {
32    private bool initialized;
33    private int appStartingCursors;
34    private int waitingCursors;
35
36    protected MainForm()
37      : base() {
38      InitializeComponent();
39      this.views = new Dictionary<IView, Form>();
40      this.userInterfaceItems = new List<IUserInterfaceItem>();
41      this.initialized = false;
42      this.showContentInViewHost = false;
43      appStartingCursors = 0;
44      waitingCursors = 0;
45    }
46
47    protected MainForm(Type userInterfaceItemType)
48      : this() {
49      this.userInterfaceItemType = userInterfaceItemType;
50    }
51
52    #region properties
53    private bool showContentInViewHost;
54    public bool ShowContentInViewHost {
55      get { return this.showContentInViewHost; }
56      set { this.showContentInViewHost = value; }
57    }
58
59    public string Title {
60      get { return this.Text; }
61      set {
62        if (InvokeRequired) {
63          Action<string> action = delegate(string s) { this.Title = s; };
64          Invoke(action, value);
65        } else
66          this.Text = value;
67      }
68    }
69
70    public override Cursor Cursor {
71      get { return base.Cursor; }
72      set {
73        if (InvokeRequired) {
74          Action<Cursor> action = delegate(Cursor c) { this.Cursor = c; };
75          Invoke(action, value);
76        } else
77          base.Cursor = value;
78      }
79    }
80
81    private Type userInterfaceItemType;
82    public Type UserInterfaceItemType {
83      get { return this.userInterfaceItemType; }
84    }
85
86    private Dictionary<IView, Form> views;
87    public IEnumerable<IView> Views {
88      get { return views.Keys; }
89    }
90
91    private IView activeView;
92    public IView ActiveView {
93      get { return this.activeView; }
94      protected set {
95        if (this.activeView != value) {
96          if (InvokeRequired) {
97            Action<IView> action = delegate(IView activeView) { this.ActiveView = activeView; };
98            Invoke(action, value);
99          } else {
100            this.activeView = value;
101            OnActiveViewChanged();
102          }
103        }
104      }
105    }
106
107    private List<IUserInterfaceItem> userInterfaceItems;
108    protected IEnumerable<IUserInterfaceItem> UserInterfaceItems {
109      get { return this.userInterfaceItems; }
110    }
111    #endregion
112
113    #region events
114    public event EventHandler ActiveViewChanged;
115    protected virtual void OnActiveViewChanged() {
116      if (InvokeRequired)
117        Invoke((MethodInvoker)OnActiveViewChanged);
118      else {
119        EventHandler handler = ActiveViewChanged;
120        if (handler != null)
121          handler(this, EventArgs.Empty);
122      }
123    }
124
125    public event EventHandler<ViewEventArgs> ViewClosed;
126    protected virtual void OnViewClosed(IView view) {
127      if (InvokeRequired) Invoke((Action<IView>)OnViewClosed, view);
128      else {
129        EventHandler<ViewEventArgs> handler = ViewClosed;
130        if (handler != null)
131          handler(this, new ViewEventArgs(view));
132      }
133    }
134
135    public event EventHandler<ViewShownEventArgs> ViewShown;
136    protected virtual void OnViewShown(IView view, bool firstTimeShown) {
137      if (InvokeRequired) Invoke((Action<IView, bool>)OnViewShown, view, firstTimeShown);
138      else {
139        EventHandler<ViewShownEventArgs> handler = ViewShown;
140        if (handler != null)
141          handler(this, new ViewShownEventArgs(view, firstTimeShown));
142      }
143    }
144
145    public event EventHandler<ViewEventArgs> ViewHidden;
146    protected virtual void OnViewHidden(IView view) {
147      if (InvokeRequired) Invoke((Action<IView>)OnViewHidden, view);
148      else {
149        EventHandler<ViewEventArgs> handler = ViewHidden;
150        if (handler != null)
151          handler(this, new ViewEventArgs(view));
152      }
153    }
154
155    public event EventHandler Changed;
156    protected void OnChanged() {
157      if (InvokeRequired)
158        Invoke((MethodInvoker)OnChanged);
159      else {
160        EventHandler handler = Changed;
161        if (handler != null)
162          Changed(this, EventArgs.Empty);
163      }
164    }
165
166    private void MainFormBase_Load(object sender, EventArgs e) {
167      if (!DesignMode) {
168        MainFormManager.RegisterMainForm(this);
169        this.CreateGUI();
170        if (!this.initialized) {
171          this.initialized = true;
172          this.OnInitialized(EventArgs.Empty);
173        }
174      }
175    }
176
177    protected virtual void OnInitialized(EventArgs e) { }
178
179    public virtual void UpdateTitle() { }
180
181    private void FormActivated(object sender, EventArgs e) {
182      this.ActiveView = GetView((Form)sender);
183    }
184
185    protected override void OnFormClosing(FormClosingEventArgs e) {
186      foreach (KeyValuePair<IView, Form> pair in this.views) {
187        DockForm dockForm = pair.Value as DockForm;
188        View view = pair.Key as View;
189        if (view != null && dockForm != null && dockForm.DockState != DockState.Document) {
190          view.CloseReason = CloseReason.ApplicationExitCall;
191          view.OnClosingHelper(dockForm, e);
192        }
193      }
194      base.OnFormClosing(e);
195    }
196
197    protected override void OnFormClosed(FormClosedEventArgs e) {
198      foreach (KeyValuePair<IView, Form> pair in this.views.ToList()) {
199        DockForm dockForm = pair.Value as DockForm;
200        View view = pair.Key as View;
201        if (view != null && dockForm != null && dockForm.DockState != DockState.Document) {
202          view.CloseReason = CloseReason.ApplicationExitCall;
203          view.OnClosedHelper(dockForm, e);
204          dockForm.Close();
205        }
206      }
207      base.OnFormClosed(e);
208    }
209    #endregion
210
211    #region create, get, show, hide, close views
212    protected virtual Form CreateForm(IView view) {
213      throw new NotImplementedException("CreateForm must be implemented in subclasses of MainForm.");
214    }
215
216    internal Form GetForm(IView view) {
217      if (views.ContainsKey(view))
218        return views[view];
219      return null;
220    }
221    protected IView GetView(Form form) {
222      return views.Where(x => x.Value == form).Single().Key;
223    }
224
225    public IContentView ShowContent(IContent content) {
226      if (content == null) throw new ArgumentNullException("Content cannot be null.");
227      Type viewType = MainFormManager.GetDefaultViewType(content.GetType());
228      if (viewType != null) return ShowContent(content, viewType);
229      return null;
230    }
231
232    public IContentView ShowContent<T>(T content, bool reuseExistingView, IEqualityComparer<T> comparer = null) where T : class,IContent {
233      if (content == null) throw new ArgumentNullException("Content cannot be null.");
234      if (!reuseExistingView) return ShowContent(content);
235
236      IContentView view = null;
237      if (comparer == null) view = Views.OfType<IContentView>().Where(v => (v.Content as T) == content).FirstOrDefault();
238      else view = Views.OfType<IContentView>().Where(v => comparer.Equals((v.Content as T), content)).FirstOrDefault();
239
240      if (view == null) view = ShowContent(content);
241      else view.Show();
242
243      return view;
244    }
245
246    public IContentView ShowContent(IContent content, Type viewType) {
247      if (InvokeRequired) return (IContentView)Invoke((Func<IContent, Type, IContentView>)ShowContent, content, viewType);
248      else {
249        if (content == null) throw new ArgumentNullException("Content cannot be null.");
250        if (viewType == null) throw new ArgumentNullException("ViewType cannot be null.");
251
252        IContentView view = null;
253        if (ShowContentInViewHost) {
254          ViewHost viewHost = new ViewHost();
255          viewHost.ViewType = viewType;
256          view = viewHost;
257
258        } else view = MainFormManager.CreateView(viewType);
259
260        view.Content = content;
261        view.Show();
262        return view;
263      }
264    }
265
266    internal void ShowView(IView view) {
267      if (InvokeRequired) Invoke((Action<IView>)ShowView, view);
268      else {
269        Form form = GetForm(view);
270        bool firstTimeShown = form == null;
271        if (firstTimeShown) {
272          form = CreateForm(view);
273          form.Activated += new EventHandler(FormActivated);
274          form.FormClosed += new FormClosedEventHandler(ChildFormClosed);
275          view.Changed += new EventHandler(View_Changed);
276          views[view] = form;
277        }
278        this.ShowView(view, firstTimeShown);
279        this.OnViewShown(view, firstTimeShown);
280      }
281    }
282
283    private void View_Changed(object sender, EventArgs e) {
284      IView view = (IView)sender;
285      if (view == this.ActiveView)
286        this.OnActiveViewChanged();
287      this.OnChanged();
288    }
289
290    protected virtual void ShowView(IView view, bool firstTimeShown) {
291    }
292
293    internal void HideView(IView view) {
294      if (InvokeRequired) Invoke((Action<IView>)HideView, view);
295      else {
296        this.Hide(view);
297        if (this.activeView == view)
298          this.ActiveView = null;
299        this.OnViewHidden(view);
300      }
301    }
302
303    protected virtual void Hide(IView view) {
304    }
305
306    private void ChildFormClosed(object sender, FormClosedEventArgs e) {
307      Form form = (Form)sender;
308      IView view = GetView(form);
309
310      view.Changed -= new EventHandler(View_Changed);
311      form.Activated -= new EventHandler(FormActivated);
312      form.FormClosed -= new FormClosedEventHandler(ChildFormClosed);
313
314      views.Remove(view);
315      this.OnViewClosed(view);
316      if (ActiveView == view)
317        ActiveView = null;
318    }
319
320    internal void CloseView(IView view) {
321      if (InvokeRequired) Invoke((Action<IView>)CloseView, view);
322      else if (views.ContainsKey(view)) {
323        this.views[view].Close();
324        this.OnViewClosed(view);
325      }
326    }
327
328    internal void CloseView(IView view, CloseReason closeReason) {
329      if (InvokeRequired) Invoke((Action<IView>)CloseView, view);
330      else if (views.ContainsKey(view)) {
331        ((View)view).CloseReason = closeReason;
332        this.CloseView(view);
333      }
334    }
335
336    public void CloseAllViews() {
337      foreach (IView view in views.Keys.ToArray())
338        CloseView(view);
339    }
340
341    public void CloseAllViews(CloseReason closeReason) {
342      foreach (IView view in views.Keys.ToArray())
343        CloseView(view, closeReason);
344    }
345    #endregion
346
347    #region progress views
348    private readonly Dictionary<IContent, IProgress> contentProgressLookup = new Dictionary<IContent, IProgress>();
349    private readonly Dictionary<Control, IProgress> viewProgressLookup = new Dictionary<Control, IProgress>();
350    private readonly List<ProgressView> progressViews = new List<ProgressView>();
351
352    /// <summary>
353    /// Adds a <see cref="ProgressView"/> to the <see cref="ContentView"/>s showing the specified content.
354    /// </summary>
355    public IProgress AddOperationProgressToContent(IContent content, string progressMessage, bool addToObjectGraphObjects = true) {
356      if (InvokeRequired) {
357        IProgress result = (IProgress)Invoke((Func<IContent, string, bool, IProgress>)AddOperationProgressToContent, content, progressMessage, addToObjectGraphObjects);
358        return result;
359      }
360      if (contentProgressLookup.ContainsKey(content))
361        throw new ArgumentException("A progress is already registered for the specified content.", "content");
362
363      var contentViews = views.Keys.OfType<ContentView>();
364      if (!contentViews.Any(v => v.Content == content))
365        throw new ArgumentException("The content is not displayed in a top-level view", "content");
366
367      if (addToObjectGraphObjects) {
368        var containedObjects = content.GetObjectGraphObjects();
369        contentViews = contentViews.Where(v => containedObjects.Contains(v.Content));
370      } else
371        contentViews = contentViews.Where(v => v.Content == content);
372
373      var progress = new Progress(progressMessage, ProgressState.Started);
374      foreach (var contentView in contentViews) {
375        progressViews.Add(new ProgressView(contentView, progress));
376      }
377
378      contentProgressLookup[content] = progress;
379      return progress;
380    }
381
382    /// <summary>
383    /// Adds a <see cref="ProgressView"/> to the specified view.
384    /// </summary>
385    public IProgress AddOperationProgressToView(Control control, string progressMessage) {
386      var progress = new Progress(progressMessage, ProgressState.Started);
387      AddOperationProgressToView(control, progress);
388      return progress;
389    }
390
391    public void AddOperationProgressToView(Control control, IProgress progress) {
392      if (InvokeRequired) {
393        Invoke((Action<Control, IProgress>)AddOperationProgressToView, control, progress);
394        return;
395      }
396      if (control == null) throw new ArgumentNullException("control", "The view must not be null.");
397      if (progress == null) throw new ArgumentNullException("progress", "The progress must not be null.");
398
399      IProgress oldProgress;
400      if (viewProgressLookup.TryGetValue(control, out oldProgress)) {
401        foreach (var progressView in progressViews.Where(v => v.Content == oldProgress).ToList()) {
402          progressView.Dispose();
403          progressViews.Remove(progressView);
404        }
405        viewProgressLookup.Remove(control);
406      }
407
408      progressViews.Add(new ProgressView(control, progress));
409      viewProgressLookup[control] = progress;
410    }
411
412    /// <summary>
413    /// Removes an existing <see cref="ProgressView"/> from the <see cref="ContentView"/>s showing the specified content.
414    /// </summary>
415    public void RemoveOperationProgressFromContent(IContent content, bool finishProgress = true) {
416      if (InvokeRequired) {
417        Invoke((Action<IContent, bool>)RemoveOperationProgressFromContent, content, finishProgress);
418        return;
419      }
420
421      IProgress progress;
422      if (!contentProgressLookup.TryGetValue(content, out progress))
423        throw new ArgumentException("No progress is registered for the specified content.", "content");
424
425      if (finishProgress) progress.Finish();
426      foreach (var progressView in progressViews.Where(v => v.Content == progress).ToList()) {
427        progressView.Dispose();
428        progressViews.Remove(progressView);
429      }
430      contentProgressLookup.Remove(content);
431
432    }
433
434    /// <summary>
435    /// Removes an existing <see cref="ProgressView"/> from the specified view.
436    /// </summary>
437    public void RemoveOperationProgressFromView(Control control, bool finishProgress = true) {
438      IProgress progress;
439      if (!viewProgressLookup.TryGetValue(control, out progress))
440        throw new ArgumentException("No progress is registered for the specified control.", "control");
441
442      if (finishProgress) progress.Finish();
443      foreach (var progressView in progressViews.Where(v => v.Content == progress).ToList()) {
444        progressView.Dispose();
445        progressViews.Remove(progressView);
446      }
447      viewProgressLookup.Remove(control);
448    }
449    #endregion
450
451    #region create menu and toolbar
452    private void CreateGUI() {
453      IEnumerable<object> allUserInterfaceItems = ApplicationManager.Manager.GetInstances(userInterfaceItemType);
454
455      IEnumerable<IPositionableUserInterfaceItem> toolStripMenuItems =
456        from mi in allUserInterfaceItems
457        where (mi is IPositionableUserInterfaceItem) &&
458              (mi is IMenuItem || mi is IMenuSeparatorItem)
459        orderby ((IPositionableUserInterfaceItem)mi).Position
460        select (IPositionableUserInterfaceItem)mi;
461
462      foreach (IPositionableUserInterfaceItem menuItem in toolStripMenuItems) {
463        if (menuItem is IMenuItem)
464          AddToolStripMenuItem((IMenuItem)menuItem);
465        else if (menuItem is IMenuSeparatorItem)
466          AddToolStripMenuItem((IMenuSeparatorItem)menuItem);
467      }
468
469      IEnumerable<IPositionableUserInterfaceItem> toolStripButtonItems =
470        from bi in allUserInterfaceItems
471        where (bi is IPositionableUserInterfaceItem) &&
472              (bi is IToolBarItem || bi is IToolBarSeparatorItem)
473        orderby ((IPositionableUserInterfaceItem)bi).Position
474        select (IPositionableUserInterfaceItem)bi;
475
476      foreach (IPositionableUserInterfaceItem toolStripButtonItem in toolStripButtonItems) {
477        if (toolStripButtonItem is IToolBarItem)
478          AddToolStripButtonItem((IToolBarItem)toolStripButtonItem);
479        else if (toolStripButtonItem is IToolBarSeparatorItem)
480          AddToolStripButtonItem((IToolBarSeparatorItem)toolStripButtonItem);
481      }
482
483      this.AdditionalCreationOfGuiElements();
484    }
485
486    protected virtual void AdditionalCreationOfGuiElements() {
487    }
488
489    private void AddToolStripMenuItem(IMenuItem menuItem) {
490      ToolStripMenuItem item = new ToolStripMenuItem();
491      this.SetToolStripItemProperties(item, menuItem);
492      this.InsertItem(menuItem.Structure, typeof(ToolStripMenuItem), item, menuStrip.Items);
493      if (menuItem is MenuItem) {
494        MenuItem menuItemBase = (MenuItem)menuItem;
495        menuItemBase.ToolStripItem = item;
496        item.ShortcutKeys = menuItemBase.ShortCutKeys;
497        item.DisplayStyle = menuItemBase.ToolStripItemDisplayStyle;
498      }
499    }
500
501    private void AddToolStripMenuItem(IMenuSeparatorItem menuItem) {
502      this.InsertItem(menuItem.Structure, typeof(ToolStripMenuItem), new ToolStripSeparator(), menuStrip.Items);
503    }
504
505    private void AddToolStripButtonItem(IToolBarItem buttonItem) {
506      ToolStripItem item = new ToolStripButton();
507      if (buttonItem is ToolBarItem) {
508        ToolBarItem buttonItemBase = (ToolBarItem)buttonItem;
509        if (buttonItemBase.IsDropDownButton)
510          item = new ToolStripDropDownButton();
511
512        item.DisplayStyle = buttonItemBase.ToolStripItemDisplayStyle;
513        buttonItemBase.ToolStripItem = item;
514      }
515
516      this.SetToolStripItemProperties(item, buttonItem);
517      this.InsertItem(buttonItem.Structure, typeof(ToolStripDropDownButton), item, toolStrip.Items);
518    }
519
520    private void AddToolStripButtonItem(IToolBarSeparatorItem buttonItem) {
521      this.InsertItem(buttonItem.Structure, typeof(ToolStripDropDownButton), new ToolStripSeparator(), toolStrip.Items);
522    }
523
524    private void InsertItem(IEnumerable<string> structure, Type t, ToolStripItem item, ToolStripItemCollection parentItems) {
525      ToolStripDropDownItem parent = null;
526      foreach (string s in structure) {
527        if (parentItems.ContainsKey(s))
528          parent = (ToolStripDropDownItem)parentItems[s];
529        else {
530          parent = (ToolStripDropDownItem)Activator.CreateInstance(t, s, null, null, s); ;
531          parentItems.Add(parent);
532        }
533        parentItems = parent.DropDownItems;
534      }
535      parentItems.Add(item);
536    }
537
538    private void SetToolStripItemProperties(ToolStripItem toolStripItem, IActionUserInterfaceItem userInterfaceItem) {
539      toolStripItem.Name = userInterfaceItem.Name;
540      toolStripItem.Text = userInterfaceItem.Name;
541      toolStripItem.ToolTipText = userInterfaceItem.ToolTipText;
542      toolStripItem.Tag = userInterfaceItem;
543      toolStripItem.Image = userInterfaceItem.Image;
544      toolStripItem.Click += new EventHandler(ToolStripItemClicked);
545      this.userInterfaceItems.Add(userInterfaceItem);
546    }
547
548    private void ToolStripItemClicked(object sender, EventArgs e) {
549      System.Windows.Forms.ToolStripItem item = (System.Windows.Forms.ToolStripItem)sender;
550      try {
551        ((IActionUserInterfaceItem)item.Tag).Execute();
552      }
553      catch (Exception ex) {
554        ErrorHandling.ShowErrorDialog((Control)MainFormManager.MainForm, ex);
555      }
556    }
557    #endregion
558
559    #region Cursor Handling
560    public void SetAppStartingCursor() {
561      if (InvokeRequired)
562        Invoke(new Action(SetAppStartingCursor));
563      else {
564        appStartingCursors++;
565        SetCursor();
566      }
567    }
568    public void ResetAppStartingCursor() {
569      if (InvokeRequired)
570        Invoke(new Action(ResetAppStartingCursor));
571      else {
572        appStartingCursors--;
573        SetCursor();
574      }
575    }
576    public void SetWaitCursor() {
577      if (InvokeRequired)
578        Invoke(new Action(SetWaitCursor));
579      else {
580        waitingCursors++;
581        SetCursor();
582      }
583    }
584    public void ResetWaitCursor() {
585      if (InvokeRequired)
586        Invoke(new Action(ResetWaitCursor));
587      else {
588        waitingCursors--;
589        SetCursor();
590      }
591    }
592    private void SetCursor() {
593      if (waitingCursors > 0) Cursor = Cursors.WaitCursor;
594      else if (appStartingCursors > 0) Cursor = Cursors.AppStarting;
595      else Cursor = Cursors.Default;
596    }
597    #endregion
598  }
599}
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