include/wx/docview.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/docview.h
   3 // Purpose:     Doc/View classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DOCH__
  13 #define _WX_DOCH__
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_DOC_VIEW_ARCHITECTURE
  18
  19 #include "wx/list.h"
  20 #include "wx/string.h"
  21 #include "wx/frame.h"
  22 #include "wx/filehistory.h"
  23
  24 #if wxUSE_PRINTING_ARCHITECTURE
  25     #include "wx/print.h"
  26 #endif
  27
  28 class WXDLLIMPEXP_FWD_CORE wxWindow;
  29 class WXDLLIMPEXP_FWD_CORE wxDocument;
  30 class WXDLLIMPEXP_FWD_CORE wxView;
  31 class WXDLLIMPEXP_FWD_CORE wxDocTemplate;
  32 class WXDLLIMPEXP_FWD_CORE wxDocManager;
  33 class WXDLLIMPEXP_FWD_CORE wxPrintInfo;
  34 class WXDLLIMPEXP_FWD_CORE wxCommandProcessor;
  35 class WXDLLIMPEXP_FWD_BASE wxConfigBase;
  36
  37 class wxDocChildFrameAnyBase;
  38
  39 #if wxUSE_STD_IOSTREAM
  40   #include "wx/iosfwrap.h"
  41 #else
  42   #include "wx/stream.h"
  43 #endif
  44
  45 // Flags for wxDocManager (can be combined).
  46 enum
  47 {
  48     wxDOC_NEW    = 1,
  49     wxDOC_SILENT = 2
  50 };
  51
  52 // Document template flags
  53 enum
  54 {
  55     wxTEMPLATE_VISIBLE = 1,
  56     wxTEMPLATE_INVISIBLE = 2,
  57     wxDEFAULT_TEMPLATE_FLAGS = wxTEMPLATE_VISIBLE
  58 };
  59
  60 #define wxMAX_FILE_HISTORY 9
  61
  62 class WXDLLIMPEXP_CORE wxDocument : public wxEvtHandler
  63 {
  64 public:
  65     wxDocument(wxDocument *parent = NULL);
  66     virtual ~wxDocument();
  67
  68     // accessors
  69     void SetFilename(const wxString& filename, bool notifyViews = false);
  70     wxString GetFilename() const { return m_documentFile; }
  71
  72     void SetTitle(const wxString& title) { m_documentTitle = title; }
  73     wxString GetTitle() const { return m_documentTitle; }
  74
  75     void SetDocumentName(const wxString& name) { m_documentTypeName = name; }
  76     wxString GetDocumentName() const { return m_documentTypeName; }
  77
  78     // access the flag indicating whether this document had been already saved,
  79     // SetDocumentSaved() is only used internally, don't call it
  80     bool GetDocumentSaved() const { return m_savedYet; }
  81     void SetDocumentSaved(bool saved = true) { m_savedYet = saved; }
  82
  83     // return true if the document hasn't been modified since the last time it
  84     // was saved (implying that it returns false if it was never saved, even if
  85     // the document is not modified)
  86     bool AlreadySaved() const { return !IsModified() && GetDocumentSaved(); }
  87
  88     virtual bool Close();
  89     virtual bool Save();
  90     virtual bool SaveAs();
  91     virtual bool Revert();
  92
  93 #if wxUSE_STD_IOSTREAM
  94     virtual wxSTD ostream& SaveObject(wxSTD ostream& stream);
  95     virtual wxSTD istream& LoadObject(wxSTD istream& stream);
  96 #else
  97     virtual wxOutputStream& SaveObject(wxOutputStream& stream);
  98     virtual wxInputStream& LoadObject(wxInputStream& stream);
  99 #endif
 100
 101     // Called by wxWidgets
 102     virtual bool OnSaveDocument(const wxString& filename);
 103     virtual bool OnOpenDocument(const wxString& filename);
 104     virtual bool OnNewDocument();
 105     virtual bool OnCloseDocument();
 106
 107     // Prompts for saving if about to close a modified document. Returns true
 108     // if ok to close the document (may have saved in the meantime, or set
 109     // modified to false)
 110     virtual bool OnSaveModified();
 111
 112     // if you override, remember to call the default
 113     // implementation (wxDocument::OnChangeFilename)
 114     virtual void OnChangeFilename(bool notifyViews);
 115
 116     // Called by framework if created automatically by the default document
 117     // manager: gives document a chance to initialise and (usually) create a
 118     // view
 119     virtual bool OnCreate(const wxString& path, long flags);
 120
 121     // By default, creates a base wxCommandProcessor.
 122     virtual wxCommandProcessor *OnCreateCommandProcessor();
 123     virtual wxCommandProcessor *GetCommandProcessor() const
 124         { return m_commandProcessor; }
 125     virtual void SetCommandProcessor(wxCommandProcessor *proc)
 126         { m_commandProcessor = proc; }
 127
 128     // Called after a view is added or removed. The default implementation
 129     // deletes the document if this is there are no more views.
 130     virtual void OnChangedViewList();
 131
 132     // Called from OnCloseDocument(), does nothing by default but may be
 133     // overridden. Return value is ignored.
 134     virtual bool DeleteContents();
 135
 136     virtual bool Draw(wxDC&);
 137     virtual bool IsModified() const { return m_documentModified; }
 138     virtual void Modify(bool mod);
 139
 140     virtual bool AddView(wxView *view);
 141     virtual bool RemoveView(wxView *view);
 142     wxList& GetViews() { return m_documentViews; }
 143     const wxList& GetViews() const { return m_documentViews; }
 144     wxView *GetFirstView() const;
 145
 146     virtual void UpdateAllViews(wxView *sender = NULL, wxObject *hint = NULL);
 147     virtual void NotifyClosing();
 148
 149     // Remove all views (because we're closing the document)
 150     virtual bool DeleteAllViews();
 151
 152     // Other stuff
 153     virtual wxDocManager *GetDocumentManager() const;
 154     virtual wxDocTemplate *GetDocumentTemplate() const
 155         { return m_documentTemplate; }
 156     virtual void SetDocumentTemplate(wxDocTemplate *temp)
 157         { m_documentTemplate = temp; }
 158
 159     // Get the document name to be shown to the user: the title if there is
 160     // any, otherwise the filename if the document was saved and, finally,
 161     // "unnamed" otherwise
 162     virtual wxString GetUserReadableName() const;
 163
 164 #if WXWIN_COMPATIBILITY_2_8
 165     // use GetUserReadableName() instead
 166     wxDEPRECATED_BUT_USED_INTERNALLY(
 167         virtual bool GetPrintableName(wxString& buf) const
 168     );
 169 #endif // WXWIN_COMPATIBILITY_2_8
 170
 171     // Returns a window that can be used as a parent for document-related
 172     // dialogs. Override if necessary.
 173     virtual wxWindow *GetDocumentWindow() const;
 174
 175 protected:
 176     wxList                m_documentViews;
 177     wxString              m_documentFile;
 178     wxString              m_documentTitle;
 179     wxString              m_documentTypeName;
 180     wxDocTemplate*        m_documentTemplate;
 181     bool                  m_documentModified;
 182     wxDocument*           m_documentParent;
 183     wxCommandProcessor*   m_commandProcessor;
 184     bool                  m_savedYet;
 185
 186     // Called by OnSaveDocument and OnOpenDocument to implement standard
 187     // Save/Load behavior. Re-implement in derived class for custom
 188     // behavior.
 189     virtual bool DoSaveDocument(const wxString& file);
 190     virtual bool DoOpenDocument(const wxString& file);
 191
 192     // the default implementation of GetUserReadableName()
 193     wxString DoGetUserReadableName() const;
 194
 195 private:
 196     DECLARE_ABSTRACT_CLASS(wxDocument)
 197     wxDECLARE_NO_COPY_CLASS(wxDocument);
 198 };
 199
 200 class WXDLLIMPEXP_CORE wxView: public wxEvtHandler
 201 {
 202 public:
 203     wxView();
 204     virtual ~wxView();
 205
 206     wxDocument *GetDocument() const { return m_viewDocument; }
 207     virtual void SetDocument(wxDocument *doc);
 208
 209     wxString GetViewName() const { return m_viewTypeName; }
 210     void SetViewName(const wxString& name) { m_viewTypeName = name; }
 211
 212     wxWindow *GetFrame() const { return m_viewFrame ; }
 213     void SetFrame(wxWindow *frame) { m_viewFrame = frame; }
 214
 215     virtual void OnActivateView(bool activate,
 216                                 wxView *activeView,
 217                                 wxView *deactiveView);
 218     virtual void OnDraw(wxDC *dc) = 0;
 219     virtual void OnPrint(wxDC *dc, wxObject *info);
 220     virtual void OnUpdate(wxView *sender, wxObject *hint = NULL);
 221     virtual void OnClosingDocument() {}
 222     virtual void OnChangeFilename();
 223
 224     // Called by framework if created automatically by the default document
 225     // manager class: gives view a chance to initialise
 226     virtual bool OnCreate(wxDocument *WXUNUSED(doc), long WXUNUSED(flags))
 227         { return true; }
 228
 229     // Checks if the view is the last one for the document; if so, asks user
 230     // to confirm save data (if modified). If ok, deletes itself and returns
 231     // true.
 232     virtual bool Close(bool deleteWindow = true);
 233
 234     // Override to do cleanup/veto close
 235     virtual bool OnClose(bool deleteWindow);
 236
 237     // A view's window can call this to notify the view it is (in)active.
 238     // The function then notifies the document manager.
 239     virtual void Activate(bool activate);
 240
 241     wxDocManager *GetDocumentManager() const
 242         { return m_viewDocument->GetDocumentManager(); }
 243
 244 #if wxUSE_PRINTING_ARCHITECTURE
 245     virtual wxPrintout *OnCreatePrintout();
 246 #endif
 247
 248     // implementation only
 249     // -------------------
 250
 251     // set the associated frame, it is used to reset its view when we're
 252     // destroyed
 253     void SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame);
 254
 255 protected:
 256     // hook the document into event handlers chain here
 257     virtual bool TryBefore(wxEvent& event);
 258
 259     wxDocument*       m_viewDocument;
 260     wxString          m_viewTypeName;
 261     wxWindow*         m_viewFrame;
 262
 263     wxDocChildFrameAnyBase *m_docChildFrame;
 264
 265 private:
 266     DECLARE_ABSTRACT_CLASS(wxView)
 267     wxDECLARE_NO_COPY_CLASS(wxView);
 268 };
 269
 270 // Represents user interface (and other) properties of documents and views
 271 class WXDLLIMPEXP_CORE wxDocTemplate: public wxObject
 272 {
 273
 274 friend class WXDLLIMPEXP_FWD_CORE wxDocManager;
 275
 276 public:
 277     // Associate document and view types. They're for identifying what view is
 278     // associated with what template/document type
 279     wxDocTemplate(wxDocManager *manager,
 280                   const wxString& descr,
 281                   const wxString& filter,
 282                   const wxString& dir,
 283                   const wxString& ext,
 284                   const wxString& docTypeName,
 285                   const wxString& viewTypeName,
 286                   wxClassInfo *docClassInfo = NULL,
 287                   wxClassInfo *viewClassInfo = NULL,
 288                   long flags = wxDEFAULT_TEMPLATE_FLAGS);
 289
 290     virtual ~wxDocTemplate();
 291
 292     // By default, these two member functions dynamically creates document and
 293     // view using dynamic instance construction. Override these if you need a
 294     // different method of construction.
 295     virtual wxDocument *CreateDocument(const wxString& path, long flags = 0);
 296     virtual wxView *CreateView(wxDocument *doc, long flags = 0);
 297
 298     // Helper method for CreateDocument; also allows you to do your own document
 299     // creation
 300     virtual bool InitDocument(wxDocument* doc,
 301                               const wxString& path,
 302                               long flags = 0);
 303
 304     wxString GetDefaultExtension() const { return m_defaultExt; }
 305     wxString GetDescription() const { return m_description; }
 306     wxString GetDirectory() const { return m_directory; }
 307     wxDocManager *GetDocumentManager() const { return m_documentManager; }
 308     void SetDocumentManager(wxDocManager *manager)
 309         { m_documentManager = manager; }
 310     wxString GetFileFilter() const { return m_fileFilter; }
 311     long GetFlags() const { return m_flags; }
 312     virtual wxString GetViewName() const { return m_viewTypeName; }
 313     virtual wxString GetDocumentName() const { return m_docTypeName; }
 314
 315     void SetFileFilter(const wxString& filter) { m_fileFilter = filter; }
 316     void SetDirectory(const wxString& dir) { m_directory = dir; }
 317     void SetDescription(const wxString& descr) { m_description = descr; }
 318     void SetDefaultExtension(const wxString& ext) { m_defaultExt = ext; }
 319     void SetFlags(long flags) { m_flags = flags; }
 320
 321     bool IsVisible() const { return (m_flags & wxTEMPLATE_VISIBLE) != 0; }
 322
 323     wxClassInfo* GetDocClassInfo() const { return m_docClassInfo; }
 324     wxClassInfo* GetViewClassInfo() const { return m_viewClassInfo; }
 325
 326     virtual bool FileMatchesTemplate(const wxString& path);
 327
 328 protected:
 329     long              m_flags;
 330     wxString          m_fileFilter;
 331     wxString          m_directory;
 332     wxString          m_description;
 333     wxString          m_defaultExt;
 334     wxString          m_docTypeName;
 335     wxString          m_viewTypeName;
 336     wxDocManager*     m_documentManager;
 337
 338     // For dynamic creation of appropriate instances.
 339     wxClassInfo*      m_docClassInfo;
 340     wxClassInfo*      m_viewClassInfo;
 341
 342     // Called by CreateDocument and CreateView to create the actual
 343     // document/view object.
 344     //
 345     // By default uses the ClassInfo provided to the constructor. Override
 346     // these functions to provide a different method of creation.
 347     virtual wxDocument *DoCreateDocument();
 348     virtual wxView *DoCreateView();
 349
 350 private:
 351     DECLARE_CLASS(wxDocTemplate)
 352     wxDECLARE_NO_COPY_CLASS(wxDocTemplate);
 353 };
 354
 355 // One object of this class may be created in an application, to manage all
 356 // the templates and documents.
 357 class WXDLLIMPEXP_CORE wxDocManager: public wxEvtHandler
 358 {
 359 public:
 360     // NB: flags are unused, don't pass wxDOC_XXX to this ctor
 361     wxDocManager(long flags = 0, bool initialize = true);
 362     virtual ~wxDocManager();
 363
 364     virtual bool Initialize();
 365
 366     // Handlers for common user commands
 367     void OnFileClose(wxCommandEvent& event);
 368     void OnFileCloseAll(wxCommandEvent& event);
 369     void OnFileNew(wxCommandEvent& event);
 370     void OnFileOpen(wxCommandEvent& event);
 371     void OnFileRevert(wxCommandEvent& event);
 372     void OnFileSave(wxCommandEvent& event);
 373     void OnFileSaveAs(wxCommandEvent& event);
 374     void OnMRUFile(wxCommandEvent& event);
 375 #if wxUSE_PRINTING_ARCHITECTURE
 376     void OnPrint(wxCommandEvent& event);
 377     void OnPreview(wxCommandEvent& event);
 378     void OnPageSetup(wxCommandEvent& event);
 379 #endif // wxUSE_PRINTING_ARCHITECTURE
 380     void OnUndo(wxCommandEvent& event);
 381     void OnRedo(wxCommandEvent& event);
 382
 383     // Handlers for UI update commands
 384     void OnUpdateFileOpen(wxUpdateUIEvent& event);
 385     void OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event);
 386     void OnUpdateFileRevert(wxUpdateUIEvent& event);
 387     void OnUpdateFileNew(wxUpdateUIEvent& event);
 388     void OnUpdateFileSave(wxUpdateUIEvent& event);
 389     void OnUpdateUndo(wxUpdateUIEvent& event);
 390     void OnUpdateRedo(wxUpdateUIEvent& event);
 391
 392     // called when file format detection didn't work, can be overridden to do
 393     // something in this case
 394     virtual void OnOpenFileFailure() { }
 395
 396     virtual wxDocument *CreateDocument(const wxString& path, long flags = 0);
 397
 398     // wrapper around CreateDocument() with a more clear name
 399     wxDocument *CreateNewDocument()
 400         { return CreateDocument(wxString(), wxDOC_NEW); }
 401
 402     virtual wxView *CreateView(wxDocument *doc, long flags = 0);
 403     virtual void DeleteTemplate(wxDocTemplate *temp, long flags = 0);
 404     virtual bool FlushDoc(wxDocument *doc);
 405     virtual wxDocTemplate *MatchTemplate(const wxString& path);
 406     virtual wxDocTemplate *SelectDocumentPath(wxDocTemplate **templates,
 407             int noTemplates, wxString& path, long flags, bool save = false);
 408     virtual wxDocTemplate *SelectDocumentType(wxDocTemplate **templates,
 409             int noTemplates, bool sort = false);
 410     virtual wxDocTemplate *SelectViewType(wxDocTemplate **templates,
 411             int noTemplates, bool sort = false);
 412     virtual wxDocTemplate *FindTemplateForPath(const wxString& path);
 413
 414     void AssociateTemplate(wxDocTemplate *temp);
 415     void DisassociateTemplate(wxDocTemplate *temp);
 416
 417     wxDocument *GetCurrentDocument() const;
 418
 419     void SetMaxDocsOpen(int n) { m_maxDocsOpen = n; }
 420     int GetMaxDocsOpen() const { return m_maxDocsOpen; }
 421
 422     // Add and remove a document from the manager's list
 423     void AddDocument(wxDocument *doc);
 424     void RemoveDocument(wxDocument *doc);
 425
 426     // closes all currently open documents
 427     bool CloseDocuments(bool force = true);
 428
 429     // closes the specified document
 430     bool CloseDocument(wxDocument* doc, bool force = false);
 431
 432     // Clear remaining documents and templates
 433     bool Clear(bool force = true);
 434
 435     // Views or windows should inform the document manager
 436     // when a view is going in or out of focus
 437     virtual void ActivateView(wxView *view, bool activate = true);
 438     virtual wxView *GetCurrentView() const { return m_currentView; }
 439
 440     wxList& GetDocuments() { return m_docs; }
 441     wxList& GetTemplates() { return m_templates; }
 442
 443     // Return the default name for a new document (by default returns strings
 444     // in the form "unnamed <counter>" but can be overridden)
 445     virtual wxString MakeNewDocumentName();
 446
 447     // Make a frame title (override this to do something different)
 448     virtual wxString MakeFrameTitle(wxDocument* doc);
 449
 450     virtual wxFileHistory *OnCreateFileHistory();
 451     virtual wxFileHistory *GetFileHistory() const { return m_fileHistory; }
 452
 453     // File history management
 454     virtual void AddFileToHistory(const wxString& file);
 455     virtual void RemoveFileFromHistory(size_t i);
 456     virtual size_t GetHistoryFilesCount() const;
 457     virtual wxString GetHistoryFile(size_t i) const;
 458     virtual void FileHistoryUseMenu(wxMenu *menu);
 459     virtual void FileHistoryRemoveMenu(wxMenu *menu);
 460 #if wxUSE_CONFIG
 461     virtual void FileHistoryLoad(const wxConfigBase& config);
 462     virtual void FileHistorySave(wxConfigBase& config);
 463 #endif // wxUSE_CONFIG
 464
 465     virtual void FileHistoryAddFilesToMenu();
 466     virtual void FileHistoryAddFilesToMenu(wxMenu* menu);
 467
 468     wxString GetLastDirectory() const;
 469     void SetLastDirectory(const wxString& dir) { m_lastDirectory = dir; }
 470
 471     // Get the current document manager
 472     static wxDocManager* GetDocumentManager() { return sm_docManager; }
 473
 474 #if WXWIN_COMPATIBILITY_2_8
 475     // deprecated, override GetDefaultName() instead
 476     wxDEPRECATED_BUT_USED_INTERNALLY(
 477         virtual bool MakeDefaultName(wxString& buf)
 478     );
 479 #endif
 480
 481 #if WXWIN_COMPATIBILITY_2_6
 482     // deprecated, use GetHistoryFilesCount() instead
 483     wxDEPRECATED( size_t GetNoHistoryFiles() const );
 484 #endif // WXWIN_COMPATIBILITY_2_6
 485
 486
 487 protected:
 488     // Open the MRU file with the given index in our associated file history.
 489     void DoOpenMRUFile(unsigned n);
 490 #if wxUSE_PRINTING_ARCHITECTURE
 491     virtual wxPreviewFrame* CreatePreviewFrame(wxPrintPreviewBase* preview,
 492                                                wxWindow *parent,
 493                                                const wxString& title);
 494 #endif // wxUSE_PRINTING_ARCHITECTURE
 495
 496     // hook the currently active view into event handlers chain here
 497     virtual bool TryBefore(wxEvent& event);
 498
 499     // return the command processor for the current document, if any
 500     wxCommandProcessor *GetCurrentCommandProcessor() const;
 501
 502     // this method tries to find an active view harder than GetCurrentView():
 503     // if the latter is NULL, it also checks if we don't have just a single
 504     // view and returns it then
 505     wxView *GetActiveView() const;
 506
 507     // activate the first view of the given document if any
 508     void ActivateDocument(wxDocument *doc);
 509
 510
 511     int               m_defaultDocumentNameCounter;
 512     int               m_maxDocsOpen;
 513     wxList            m_docs;
 514     wxList            m_templates;
 515     wxView*           m_currentView;
 516     wxFileHistory*    m_fileHistory;
 517     wxString          m_lastDirectory;
 518     static wxDocManager* sm_docManager;
 519
 520 #if wxUSE_PRINTING_ARCHITECTURE
 521     wxPageSetupDialogData m_pageSetupDialogData;
 522 #endif // wxUSE_PRINTING_ARCHITECTURE
 523
 524     DECLARE_EVENT_TABLE()
 525     DECLARE_DYNAMIC_CLASS(wxDocManager)
 526     wxDECLARE_NO_COPY_CLASS(wxDocManager);
 527 };
 528
 529 #if WXWIN_COMPATIBILITY_2_6
 530 inline size_t wxDocManager::GetNoHistoryFiles() const
 531 {
 532     return GetHistoryFilesCount();
 533 }
 534 #endif // WXWIN_COMPATIBILITY_2_6
 535
 536 // ----------------------------------------------------------------------------
 537 // Base class for child frames -- this is what wxView renders itself into
 538 //
 539 // Notice that this is a mix-in class so it doesn't derive from wxWindow, only
 540 // wxDocChildFrameAny does
 541 // ----------------------------------------------------------------------------
 542
 543 class WXDLLIMPEXP_CORE wxDocChildFrameAnyBase
 544 {
 545 public:
 546     // default ctor, use Create() after it
 547     wxDocChildFrameAnyBase()
 548     {
 549         m_childDocument = NULL;
 550         m_childView = NULL;
 551         m_win = NULL;
 552     }
 553
 554     // full ctor equivalent to using the default one and Create(0
 555     wxDocChildFrameAnyBase(wxDocument *doc, wxView *view, wxWindow *win)
 556     {
 557         Create(doc, view, win);
 558     }
 559
 560     // method which must be called for an object created using the default ctor
 561     //
 562     // note that it returns bool just for consistency with Create() methods in
 563     // other classes, we never return false from here
 564     bool Create(wxDocument *doc, wxView *view, wxWindow *win)
 565     {
 566         m_childDocument = doc;
 567         m_childView = view;
 568         m_win = win;
 569
 570         if ( view )
 571             view->SetDocChildFrame(this);
 572
 573         return true;
 574     }
 575
 576     // dtor doesn't need to be virtual, an object should never be destroyed via
 577     // a pointer to this class
 578     ~wxDocChildFrameAnyBase()
 579     {
 580         // prevent the view from deleting us if we're being deleted directly
 581         // (and not via Close() + Destroy())
 582         if ( m_childView )
 583             m_childView->SetDocChildFrame(NULL);
 584     }
 585
 586     wxDocument *GetDocument() const { return m_childDocument; }
 587     wxView *GetView() const { return m_childView; }
 588     void SetDocument(wxDocument *doc) { m_childDocument = doc; }
 589     void SetView(wxView *view) { m_childView = view; }
 590
 591     wxWindow *GetWindow() const { return m_win; }
 592
 593 protected:
 594     // we're not a wxEvtHandler but we provide this wxEvtHandler-like function
 595     // which is called from TryBefore() of the derived classes to give our view
 596     // a chance to process the message before the frame event handlers are used
 597     bool TryProcessEvent(wxEvent& event)
 598     {
 599         return m_childView && m_childView->ProcessEventLocally(event);
 600     }
 601
 602     // called from EVT_CLOSE handler in the frame: check if we can close and do
 603     // cleanup if so; veto the event otherwise
 604     bool CloseView(wxCloseEvent& event);
 605
 606
 607     wxDocument*       m_childDocument;
 608     wxView*           m_childView;
 609
 610     // the associated window: having it here is not terribly elegant but it
 611     // allows us to avoid having any virtual functions in this class
 612     wxWindow* m_win;
 613
 614
 615     wxDECLARE_NO_COPY_CLASS(wxDocChildFrameAnyBase);
 616 };
 617
 618 // ----------------------------------------------------------------------------
 619 // Template implementing child frame concept using the given wxFrame-like class
 620 //
 621 // This is used to define wxDocChildFrame and wxDocMDIChildFrame: ChildFrame is
 622 // a wxFrame or wxMDIChildFrame (although in theory it could be any wxWindow-
 623 // derived class as long as it provided a ctor with the same signature as
 624 // wxFrame and OnActivate() method) and ParentFrame is either wxFrame or
 625 // wxMDIParentFrame.
 626 // ----------------------------------------------------------------------------
 627
 628 template <class ChildFrame, class ParentFrame>
 629 class WXDLLIMPEXP_CORE wxDocChildFrameAny : public ChildFrame,
 630                                             public wxDocChildFrameAnyBase
 631 {
 632 public:
 633     typedef ChildFrame BaseClass;
 634
 635     // default ctor, use Create after it
 636     wxDocChildFrameAny() { }
 637
 638     // ctor for a frame showing the given view of the specified document
 639     wxDocChildFrameAny(wxDocument *doc,
 640                        wxView *view,
 641                        ParentFrame *parent,
 642                        wxWindowID id,
 643                        const wxString& title,
 644                        const wxPoint& pos = wxDefaultPosition,
 645                        const wxSize& size = wxDefaultSize,
 646                        long style = wxDEFAULT_FRAME_STYLE,
 647                        const wxString& name = wxFrameNameStr)
 648     {
 649         Create(doc, view, parent, id, title, pos, size, style, name);
 650     }
 651
 652     bool Create(wxDocument *doc,
 653                 wxView *view,
 654                 ParentFrame *parent,
 655                 wxWindowID id,
 656                 const wxString& title,
 657                 const wxPoint& pos = wxDefaultPosition,
 658                 const wxSize& size = wxDefaultSize,
 659                 long style = wxDEFAULT_FRAME_STYLE,
 660                 const wxString& name = wxFrameNameStr)
 661     {
 662         if ( !wxDocChildFrameAnyBase::Create(doc, view, this) )
 663             return false;
 664
 665         if ( !BaseClass::Create(parent, id, title, pos, size, style, name) )
 666             return false;
 667
 668         this->Connect(wxEVT_ACTIVATE,
 669                       wxActivateEventHandler(wxDocChildFrameAny::OnActivate));
 670         this->Connect(wxEVT_CLOSE_WINDOW,
 671                       wxCloseEventHandler(wxDocChildFrameAny::OnCloseWindow));
 672
 673         return true;
 674     }
 675
 676     virtual bool Destroy()
 677     {
 678         // FIXME: why exactly do we do this? to avoid activation events during
 679         //        destructions maybe?
 680         m_childView = NULL;
 681         return BaseClass::Destroy();
 682     }
 683
 684 protected:
 685     // hook the child view into event handlers chain here
 686     virtual bool TryBefore(wxEvent& event)
 687     {
 688         return TryProcessEvent(event) || BaseClass::TryBefore(event);
 689     }
 690
 691 private:
 692     void OnActivate(wxActivateEvent& event)
 693     {
 694         BaseClass::OnActivate(event);
 695
 696         if ( m_childView )
 697             m_childView->Activate(event.GetActive());
 698     }
 699
 700     void OnCloseWindow(wxCloseEvent& event)
 701     {
 702         if ( CloseView(event) )
 703             Destroy();
 704         //else: vetoed
 705     }
 706
 707     wxDECLARE_NO_COPY_TEMPLATE_CLASS_2(wxDocChildFrameAny,
 708                                         ChildFrame, ParentFrame);
 709 };
 710
 711 // ----------------------------------------------------------------------------
 712 // A default child frame: we need to define it as a class just for wxRTTI,
 713 // otherwise we could simply typedef it
 714 // ----------------------------------------------------------------------------
 715
 716 #ifdef __VISUALC6__
 717     // "non dll-interface class 'wxDocChildFrameAny<>' used as base interface
 718     // for dll-interface class 'wxDocChildFrame'" -- this is bogus as the
 719     // template will be DLL-exported but only once it is used as base class
 720     // here!
 721     #pragma warning (push)
 722     #pragma warning (disable:4275)
 723 #endif
 724
 725 typedef wxDocChildFrameAny<wxFrame, wxFrame> wxDocChildFrameBase;
 726
 727 class WXDLLIMPEXP_CORE wxDocChildFrame : public wxDocChildFrameBase
 728 {
 729 public:
 730     wxDocChildFrame()
 731     {
 732     }
 733
 734     wxDocChildFrame(wxDocument *doc,
 735                     wxView *view,
 736                     wxFrame *parent,
 737                     wxWindowID id,
 738                     const wxString& title,
 739                     const wxPoint& pos = wxDefaultPosition,
 740                     const wxSize& size = wxDefaultSize,
 741                     long style = wxDEFAULT_FRAME_STYLE,
 742                     const wxString& name = wxFrameNameStr)
 743         : wxDocChildFrameBase(doc, view,
 744                               parent, id, title, pos, size, style, name)
 745     {
 746     }
 747
 748     bool Create(wxDocument *doc,
 749                 wxView *view,
 750                 wxFrame *parent,
 751                 wxWindowID id,
 752                 const wxString& title,
 753                 const wxPoint& pos = wxDefaultPosition,
 754                 const wxSize& size = wxDefaultSize,
 755                 long style = wxDEFAULT_FRAME_STYLE,
 756                 const wxString& name = wxFrameNameStr)
 757     {
 758         return wxDocChildFrameBase::Create
 759                (
 760                     doc, view,
 761                     parent, id, title, pos, size, style, name
 762                );
 763     }
 764
 765 private:
 766     DECLARE_CLASS(wxDocChildFrame)
 767     wxDECLARE_NO_COPY_CLASS(wxDocChildFrame);
 768 };
 769
 770 // ----------------------------------------------------------------------------
 771 // wxDocParentFrame and related classes.
 772 //
 773 // As with wxDocChildFrame we define a template base class used by both normal
 774 // and MDI versions
 775 // ----------------------------------------------------------------------------
 776
 777 // Base class containing type-independent code of wxDocParentFrameAny
 778 //
 779 // Similarly to wxDocChildFrameAnyBase, this class is a mix-in and doesn't
 780 // derive from wxWindow.
 781 class WXDLLIMPEXP_CORE wxDocParentFrameAnyBase
 782 {
 783 public:
 784     wxDocParentFrameAnyBase() { m_docManager = NULL; }
 785
 786     wxDocManager *GetDocumentManager() const { return m_docManager; }
 787
 788 protected:
 789     wxDocManager *m_docManager;
 790
 791     wxDECLARE_NO_COPY_CLASS(wxDocParentFrameAnyBase);
 792 };
 793
 794 // This is similar to wxDocChildFrameAny and is used to provide common
 795 // implementation for both wxDocParentFrame and wxDocMDIParentFrame
 796 template <class BaseFrame>
 797 class WXDLLIMPEXP_CORE wxDocParentFrameAny : public BaseFrame,
 798                                              public wxDocParentFrameAnyBase
 799 {
 800 public:
 801     wxDocParentFrameAny() { }
 802     wxDocParentFrameAny(wxDocManager *manager,
 803                         wxFrame *frame,
 804                         wxWindowID id,
 805                         const wxString& title,
 806                         const wxPoint& pos = wxDefaultPosition,
 807                         const wxSize& size = wxDefaultSize,
 808                         long style = wxDEFAULT_FRAME_STYLE,
 809                         const wxString& name = wxFrameNameStr)
 810     {
 811         Create(manager, frame, id, title, pos, size, style, name);
 812     }
 813
 814     bool Create(wxDocManager *manager,
 815                 wxFrame *frame,
 816                 wxWindowID id,
 817                 const wxString& title,
 818                 const wxPoint& pos = wxDefaultPosition,
 819                 const wxSize& size = wxDefaultSize,
 820                 long style = wxDEFAULT_FRAME_STYLE,
 821                 const wxString& name = wxFrameNameStr)
 822     {
 823         m_docManager = manager;
 824
 825         if ( !BaseFrame::Create(frame, id, title, pos, size, style, name) )
 826             return false;
 827
 828         this->Connect(wxID_EXIT, wxEVT_COMMAND_MENU_SELECTED,
 829                       wxCommandEventHandler(wxDocParentFrameAny::OnExit));
 830         this->Connect(wxEVT_CLOSE_WINDOW,
 831                       wxCloseEventHandler(wxDocParentFrameAny::OnCloseWindow));
 832
 833         return true;
 834     }
 835
 836 protected:
 837     // hook the document manager into event handling chain here
 838     virtual bool TryBefore(wxEvent& event)
 839     {
 840         if ( m_docManager && m_docManager->ProcessEventLocally(event) )
 841             return true;
 842
 843         return BaseFrame::TryBefore(event);
 844     }
 845
 846 private:
 847     void OnExit(wxCommandEvent& WXUNUSED(event))
 848     {
 849         this->Close();
 850     }
 851
 852     void OnCloseWindow(wxCloseEvent& event)
 853     {
 854         if ( m_docManager && !m_docManager->Clear(!event.CanVeto()) )
 855         {
 856             // The user decided not to close finally, abort.
 857             event.Veto();
 858         }
 859         else
 860         {
 861             // Just skip the event, base class handler will destroy the window.
 862             event.Skip();
 863         }
 864     }
 865
 866
 867     wxDECLARE_NO_COPY_CLASS(wxDocParentFrameAny);
 868 };
 869
 870 typedef wxDocParentFrameAny<wxFrame> wxDocParentFrameBase;
 871
 872 class WXDLLIMPEXP_CORE wxDocParentFrame : public wxDocParentFrameBase
 873 {
 874 public:
 875     wxDocParentFrame() : wxDocParentFrameBase() { }
 876
 877     wxDocParentFrame(wxDocManager *manager,
 878                      wxFrame *parent,
 879                      wxWindowID id,
 880                      const wxString& title,
 881                      const wxPoint& pos = wxDefaultPosition,
 882                      const wxSize& size = wxDefaultSize,
 883                      long style = wxDEFAULT_FRAME_STYLE,
 884                      const wxString& name = wxFrameNameStr)
 885         : wxDocParentFrameBase(manager,
 886                                parent, id, title, pos, size, style, name)
 887     {
 888     }
 889
 890     bool Create(wxDocManager *manager,
 891                 wxFrame *parent,
 892                 wxWindowID id,
 893                 const wxString& title,
 894                 const wxPoint& pos = wxDefaultPosition,
 895                 const wxSize& size = wxDefaultSize,
 896                 long style = wxDEFAULT_FRAME_STYLE,
 897                 const wxString& name = wxFrameNameStr)
 898     {
 899         return wxDocParentFrameBase::Create(manager,
 900                                             parent, id, title,
 901                                             pos, size, style, name);
 902     }
 903
 904 private:
 905     DECLARE_CLASS(wxDocParentFrame)
 906     wxDECLARE_NO_COPY_CLASS(wxDocParentFrame);
 907 };
 908
 909 #ifdef __VISUALC6__
 910     // reenable warning 4275
 911     #pragma warning (pop)
 912 #endif
 913
 914 // ----------------------------------------------------------------------------
 915 // Provide simple default printing facilities
 916 // ----------------------------------------------------------------------------
 917
 918 #if wxUSE_PRINTING_ARCHITECTURE
 919 class WXDLLIMPEXP_CORE wxDocPrintout : public wxPrintout
 920 {
 921 public:
 922     wxDocPrintout(wxView *view = NULL, const wxString& title = _("Printout"));
 923
 924     // implement wxPrintout methods
 925     virtual bool OnPrintPage(int page);
 926     virtual bool HasPage(int page);
 927     virtual bool OnBeginDocument(int startPage, int endPage);
 928     virtual void GetPageInfo(int *minPage, int *maxPage,
 929                              int *selPageFrom, int *selPageTo);
 930
 931     virtual wxView *GetView() { return m_printoutView; }
 932
 933 protected:
 934     wxView*       m_printoutView;
 935
 936 private:
 937     DECLARE_DYNAMIC_CLASS(wxDocPrintout)
 938     wxDECLARE_NO_COPY_CLASS(wxDocPrintout);
 939 };
 940 #endif // wxUSE_PRINTING_ARCHITECTURE
 941
 942 // For compatibility with existing file formats:
 943 // converts from/to a stream to/from a temporary file.
 944 #if wxUSE_STD_IOSTREAM
 945 bool WXDLLIMPEXP_CORE
 946 wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream);
 947 bool WXDLLIMPEXP_CORE
 948 wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename);
 949 #else
 950 bool WXDLLIMPEXP_CORE
 951 wxTransferFileToStream(const wxString& filename, wxOutputStream& stream);
 952 bool WXDLLIMPEXP_CORE
 953 wxTransferStreamToFile(wxInputStream& stream, const wxString& filename);
 954 #endif // wxUSE_STD_IOSTREAM
 955
 956
 957 // these flags are not used anywhere by wxWidgets and kept only for an unlikely
 958 // case of existing user code using them for its own purposes
 959 #ifdef WXWIN_COMPATIBILITY_2_8
 960 enum
 961 {
 962     wxDOC_SDI = 1,
 963     wxDOC_MDI,
 964     wxDEFAULT_DOCMAN_FLAGS = wxDOC_SDI
 965 };
 966 #endif // WXWIN_COMPATIBILITY_2_8
 967
 968 #endif // wxUSE_DOC_VIEW_ARCHITECTURE
 969
 970 #endif // _WX_DOCH__