///////////////////////////////////////////////////////////////////////////// // Name: docview.cpp // Purpose: Document/view classes // Author: Julian Smart // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation "docview.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/defs.h" #endif #if USE_DOC_VIEW_ARCHITECTURE #ifndef WX_PRECOMP #include "wx/utils.h" #include "wx/app.h" #include "wx/dc.h" #include "wx/dialog.h" #include "wx/menu.h" #include "wx/list.h" #include "wx/filedlg.h" #endif #include "wx/msgdlg.h" #include "wx/choicdlg.h" #include "wx/docview.h" #include "wx/printdlg.h" #include "wx/generic/prntdlgg.h" #include "wx/generic/printps.h" #include #include #if USE_IOSTREAMH #include #else #include #endif #include "fstream.h" #if !USE_SHARED_LIBRARY IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler) IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler) IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject) IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler) IMPLEMENT_CLASS(wxDocChildFrame, wxFrame) IMPLEMENT_CLASS(wxDocParentFrame, wxFrame) #if USE_PRINTING_ARCHITECTURE IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout) #endif IMPLEMENT_CLASS(wxCommand, wxObject) IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject) IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject) // IMPLEMENT_DYNAMIC_CLASS(wxPrintInfo, wxObject) #endif /* * Definition of wxDocument */ wxDocument::wxDocument(wxDocument *parent) { m_documentModified=FALSE; m_documentFile=""; m_documentTitle=""; m_documentParent=parent; m_documentTemplate = NULL; m_documentTypeName = ""; m_savedYet = FALSE; } bool wxDocument::DeleteContents(void) { return TRUE; } wxDocument::~wxDocument(void) { DeleteContents(); if (m_commandProcessor) delete m_commandProcessor; GetDocumentManager()->RemoveDocument(this); // Not safe to do here, since it'll // invoke virtual view functions expecting to see // valid derived objects: and by the time we get // here, we've called destructors higher up. // DeleteAllViews(); } bool wxDocument::Close(void) { if (OnSaveModified()) return OnCloseDocument(); else return FALSE; } bool wxDocument::OnCloseDocument(void) { DeleteContents(); Modify(FALSE); return TRUE; } // Note that this implicitly deletes the document when // the last view is deleted. bool wxDocument::DeleteAllViews(void) { wxNode *node = m_documentViews.First(); while (node) { wxView *view = (wxView *)node->Data(); if (!view->Close()) return FALSE; wxNode *next = node->Next(); delete view; // Deletes node implicitly node = next; } return TRUE; } wxView *wxDocument::GetFirstView(void) const { if (m_documentViews.Number() == 0) return NULL; return (wxView *)m_documentViews.First()->Data(); } wxDocManager *wxDocument::GetDocumentManager(void) const { return m_documentTemplate->GetDocumentManager(); } bool wxDocument::OnNewDocument(void) { if (!OnSaveModified()) return FALSE; if (OnCloseDocument()==FALSE) return FALSE; DeleteContents(); Modify(FALSE); SetDocumentSaved(FALSE); wxString name; GetDocumentManager()->MakeDefaultName(name); SetTitle(name); SetFilename(name, TRUE); return TRUE; } bool wxDocument::Save(void) { bool ret = FALSE; if (!IsModified()) return TRUE; if (m_documentFile == "" || !m_savedYet) ret = SaveAs(); else ret = OnSaveDocument(m_documentFile); if ( ret ) SetDocumentSaved(TRUE); return ret; } bool wxDocument::SaveAs(void) { wxDocTemplate *docTemplate = GetDocumentTemplate(); if (!docTemplate) return FALSE; char *tmp = wxFileSelector("Save as", docTemplate->GetDirectory(), GetFilename(), docTemplate->GetDefaultExtension(), docTemplate->GetFileFilter(), 0, GetDocumentWindow()); if (!tmp) return FALSE; else { SetFilename(tmp); SetTitle(wxFileNameFromPath(tmp)); GetDocumentManager()->AddFileToHistory(tmp); // Notify the views that the filename has changed wxNode *node = m_documentViews.First(); while (node) { wxView *view = (wxView *)node->Data(); view->OnChangeFilename(); node = node->Next(); } } return OnSaveDocument(m_documentFile); } bool wxDocument::OnSaveDocument(const wxString& file) { if (file == "") return FALSE; wxString msgTitle; if (wxTheApp->GetAppName() != "") msgTitle = wxTheApp->GetAppName(); else msgTitle = wxString("File error"); ofstream store(file); if (store.fail() || store.bad()) { (void)wxMessageBox("Sorry, could not open this file for saving.", msgTitle, wxOK | wxICON_EXCLAMATION, GetDocumentWindow()); // Saving error return FALSE; } if (SaveObject(store)==FALSE) { (void)wxMessageBox("Sorry, could not save this file.", msgTitle, wxOK | wxICON_EXCLAMATION, GetDocumentWindow()); // Saving error return FALSE; } Modify(FALSE); SetFilename(file); return TRUE; } bool wxDocument::OnOpenDocument(const wxString& file) { if (!OnSaveModified()) return FALSE; wxString msgTitle; if (wxTheApp->GetAppName() != "") msgTitle = wxTheApp->GetAppName(); else msgTitle = wxString("File error"); ifstream store(file); if (store.fail() || store.bad()) { (void)wxMessageBox("Sorry, could not open this file.", msgTitle, wxOK|wxICON_EXCLAMATION, GetDocumentWindow()); return FALSE; } if (LoadObject(store)==FALSE) { (void)wxMessageBox("Sorry, could not open this file.", msgTitle, wxOK|wxICON_EXCLAMATION, GetDocumentWindow()); return FALSE; } SetFilename(file, TRUE); Modify(FALSE); UpdateAllViews(); return TRUE; } istream& wxDocument::LoadObject(istream& stream) { // wxObject::LoadObject(stream); return stream; } ostream& wxDocument::SaveObject(ostream& stream) { // wxObject::SaveObject(stream); return stream; } bool wxDocument::Revert(void) { return FALSE; } // Get title, or filename if no title, else unnamed bool wxDocument::GetPrintableName(wxString& buf) const { if (m_documentTitle != "") { buf = m_documentTitle; return TRUE; } else if (m_documentFile != "") { buf = wxFileNameFromPath(m_documentFile); return TRUE; } else { buf = "unnamed"; return TRUE; } } wxWindow *wxDocument::GetDocumentWindow(void) const { wxView *view = GetFirstView(); if (view) return view->GetFrame(); else return wxTheApp->GetTopWindow(); } wxCommandProcessor *wxDocument::OnCreateCommandProcessor(void) { return new wxCommandProcessor; } // TRUE if safe to close bool wxDocument::OnSaveModified(void) { if (IsModified()) { char buf[400]; wxString title; GetPrintableName(title); wxString msgTitle; if (wxTheApp->GetAppName() != "") msgTitle = wxTheApp->GetAppName(); else msgTitle = wxString("Warning"); sprintf(buf, "Do you want to save changes to document %s?", (const char *)title); int res = wxMessageBox(buf, msgTitle, wxYES_NO|wxCANCEL|wxICON_QUESTION, GetDocumentWindow()); if (res == wxNO) { Modify(FALSE); return TRUE; } else if (res == wxYES) return Save(); else if (res == wxCANCEL) return FALSE; } return TRUE; } bool wxDocument::Draw(wxDC& WXUNUSED(context)) { return TRUE; } bool wxDocument::AddView(wxView *view) { if (!m_documentViews.Member(view)) { m_documentViews.Append(view); OnChangedViewList(); } return TRUE; } bool wxDocument::RemoveView(wxView *view) { (void)m_documentViews.DeleteObject(view); OnChangedViewList(); return TRUE; } bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags) { if (GetDocumentTemplate()->CreateView(this, flags)) return TRUE; else return FALSE; } // Called after a view is added or removed. // The default implementation deletes the document if // there are no more views. void wxDocument::OnChangedViewList(void) { if (m_documentViews.Number() == 0) { if (OnSaveModified()) { delete this; } } } void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint) { wxNode *node = m_documentViews.First(); while (node) { wxView *view = (wxView *)node->Data(); view->OnUpdate(sender, hint); node = node->Next(); } } void wxDocument::SetFilename(const wxString& filename, bool notifyViews) { m_documentFile = filename; if ( notifyViews ) { // Notify the views that the filename has changed wxNode *node = m_documentViews.First(); while (node) { wxView *view = (wxView *)node->Data(); view->OnChangeFilename(); node = node->Next(); } } } /* * Document view */ wxView::wxView(wxDocument *doc) { SetDocument(doc); m_viewTypeName = ""; m_viewFrame = NULL; } wxView::~wxView(void) { GetDocumentManager()->ActivateView(this, FALSE, TRUE); m_viewDocument->RemoveView(this); } // Extend event processing to search the document's event table bool wxView::ProcessEvent(wxEvent& event) { if ( !GetDocument() || !GetDocument()->ProcessEvent(event) ) return wxEvtHandler::ProcessEvent(event); else return TRUE; } void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView)) { } void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info)) { OnDraw(dc); } void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint)) { } void wxView::OnChangeFilename(void) { if (GetFrame() && GetDocument()) { wxString name; GetDocument()->GetPrintableName(name); // If the frame is an MDI child, just set the title // to the name. // Otherwise, append the document name to the name of the application #ifdef __WXMSW__ if (GetFrame()->IsKindOf(CLASSINFO(wxMDIChildFrame))) #else if (FALSE) #endif { GetFrame()->SetTitle(name); } else { if (wxTheApp->GetAppName() != "") { char buf[400]; sprintf(buf, "%s - %s", (const char *)wxTheApp->GetAppName(), (const char *)name); GetFrame()->SetTitle(buf); } else GetFrame()->SetTitle(name); } } } void wxView::SetDocument(wxDocument *doc) { m_viewDocument = doc; if (doc) doc->AddView(this); } bool wxView::Close(bool deleteWindow) { if (OnClose(deleteWindow)) return TRUE; else return FALSE; } void wxView::Activate(bool activate) { if (GetDocumentManager()) { OnActivateView(activate, this, GetDocumentManager()->GetCurrentView()); GetDocumentManager()->ActivateView(this, activate); } } bool wxView::OnClose(bool WXUNUSED(deleteWindow)) { return GetDocument() ? GetDocument()->Close() : TRUE; } #if USE_PRINTING_ARCHITECTURE wxPrintout *wxView::OnCreatePrintout(void) { return new wxDocPrintout(this); } #endif /* * wxDocTemplate */ wxDocTemplate::wxDocTemplate(wxDocManager *manager, const wxString& descr, const wxString& filter, const wxString& dir, const wxString& ext, const wxString& docTypeName, const wxString& viewTypeName, wxClassInfo *docClassInfo, wxClassInfo *viewClassInfo, long flags) { m_documentManager = manager; m_flags = flags; m_description = descr; m_directory = dir; m_defaultExt = ext; m_fileFilter = filter; m_flags = flags; m_docTypeName = docTypeName; m_viewTypeName = viewTypeName; m_documentManager->AssociateTemplate(this); m_docClassInfo = docClassInfo; m_viewClassInfo = viewClassInfo; } wxDocTemplate::~wxDocTemplate(void) { m_documentManager->DisassociateTemplate(this); } // Tries to dynamically construct an object of the right // class. wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags) { if (!m_docClassInfo) return NULL; wxDocument *doc = (wxDocument *)m_docClassInfo->CreateObject(); doc->SetFilename(path); doc->SetDocumentTemplate(this); GetDocumentManager()->AddDocument(doc); doc->SetCommandProcessor(doc->OnCreateCommandProcessor()); if (doc->OnCreate(path, flags)) return doc; else { delete doc; return NULL; } } wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags) { if (!m_viewClassInfo) return NULL; wxView *view = (wxView *)m_viewClassInfo->CreateObject(); view->SetDocument(doc); if (view->OnCreate(doc, flags)) { return view; } else { delete view; return NULL; } } BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler) EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen) EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose) EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert) EVT_MENU(wxID_NEW, wxDocManager::OnFileNew) EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave) EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs) EVT_MENU(wxID_UNDO, wxDocManager::OnUndo) EVT_MENU(wxID_REDO, wxDocManager::OnRedo) EVT_MENU(wxID_PRINT, wxDocManager::OnPrint) EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPrintSetup) EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview) END_EVENT_TABLE() wxDocManager::wxDocManager(long flags, bool initialize) { m_defaultDocumentNameCounter = 1; m_flags = flags; m_currentView = NULL; m_maxDocsOpen = 10000; m_fileHistory = NULL; if (initialize) Initialize(); } wxDocManager::~wxDocManager(void) { Clear(); if (m_fileHistory) delete m_fileHistory; } bool wxDocManager::Clear(bool force) { wxNode *node = m_docs.First(); while (node) { wxDocument *doc = (wxDocument *)node->Data(); wxNode *next = node->Next(); if (!doc->Close() && !force) return FALSE; // Implicitly deletes the document when the last // view is removed (deleted) doc->DeleteAllViews(); // Check document is deleted if (m_docs.Member(doc)) delete doc; // This assumes that documents are not connected in // any way, i.e. deleting one document does NOT // delete another. node = next; } node = m_templates.First(); while (node) { wxDocTemplate *templ = (wxDocTemplate*) node->Data(); wxNode* next = node->Next(); delete templ; node = next; } return TRUE; } bool wxDocManager::Initialize(void) { m_fileHistory = OnCreateFileHistory(); return TRUE; } wxFileHistory *wxDocManager::OnCreateFileHistory(void) { return new wxFileHistory; } void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; if (doc->Close()) { doc->DeleteAllViews(); if (m_docs.Member(doc)) delete doc; } } void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event)) { CreateDocument(wxString(""), wxDOC_NEW); } void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event)) { CreateDocument(wxString(""), 0); } void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; doc->Revert(); } void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; doc->Save(); } void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; doc->SaveAs(); } void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event)) { wxView *view = GetCurrentView(); if (!view) return; wxPrintout *printout = view->OnCreatePrintout(); if (printout) { // TODO: trouble about this is that it pulls in the postscript // code unecessarily #ifdef __WXMSW__ if ( wxTheApp->GetPrintMode() == wxPRINT_WINDOWS ) { wxWindowsPrinter printer; printer.Print(view->GetFrame(), printout, TRUE); } else #endif { wxPostScriptPrinter printer; printer.Print(view->GetFrame(), printout, TRUE); } delete printout; } } void wxDocManager::OnPrintSetup(wxCommandEvent& WXUNUSED(event)) { wxWindow *parentWin = wxTheApp->GetTopWindow(); wxView *view = GetCurrentView(); if (view) parentWin = view->GetFrame(); wxPrintData data; #ifdef __WXMSW__ if ( wxTheApp->GetPrintMode() == wxPRINT_WINDOWS ) { wxPrintDialog printerDialog(parentWin, & data); printerDialog.GetPrintData().SetSetupDialog(TRUE); printerDialog.ShowModal(); } else #endif { wxGenericPrintDialog printerDialog(parentWin, & data); printerDialog.GetPrintData().SetSetupDialog(TRUE); printerDialog.ShowModal(); } } void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event)) { wxView *view = GetCurrentView(); if (!view) return; wxPrintout *printout = view->OnCreatePrintout(); if (printout) { // Pass two printout objects: for preview, and possible printing. wxPrintPreviewBase *preview = NULL; #ifdef __WXMSW__ if ( wxTheApp->GetPrintMode() == wxPRINT_WINDOWS ) preview = new wxWindowsPrintPreview(printout, view->OnCreatePrintout()); else #endif preview = new wxPostScriptPrintPreview(printout, view->OnCreatePrintout()); wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), "Print Preview", wxPoint(100, 100), wxSize(600, 650)); frame->Centre(wxBOTH); frame->Initialize(); frame->Show(TRUE); } } void wxDocManager::OnUndo(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; if (doc->GetCommandProcessor()) doc->GetCommandProcessor()->Undo(); } void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event)) { wxDocument *doc = GetCurrentDocument(); if (!doc) return; if (doc->GetCommandProcessor()) doc->GetCommandProcessor()->Redo(); } wxView *wxDocManager::GetCurrentView(void) const { if (m_currentView) return m_currentView; if (m_docs.Number() == 1) { wxDocument* doc = (wxDocument*) m_docs.First()->Data(); return doc->GetFirstView(); } return NULL; } // Extend event processing to search the view's event table bool wxDocManager::ProcessEvent(wxEvent& event) { wxView* view = GetCurrentView(); if (view) { if (view->ProcessEvent(event)) return TRUE; } return wxEvtHandler::ProcessEvent(event); } wxDocument *wxDocManager::CreateDocument(const wxString& path, long flags) { wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()]; int i; int n = 0; for (i = 0; i < m_templates.Number(); i++) { wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data()); if (temp->IsVisible()) { templates[n] = temp; n ++; } } if (n == 0) { delete[] templates; return NULL; } // If we've reached the max number of docs, close the // first one. if (GetDocuments().Number() >= m_maxDocsOpen) { wxDocument *doc = (wxDocument *)GetDocuments().First()->Data(); if (doc->Close()) { // Implicitly deletes the document when // the last view is deleted doc->DeleteAllViews(); // Check we're really deleted if (m_docs.Member(doc)) delete doc; } else return NULL; } // New document: user chooses a template, unless there's only one. if (flags & wxDOC_NEW) { if (n == 1) { wxDocTemplate *temp = templates[0]; delete[] templates; wxDocument *newDoc = temp->CreateDocument(path, flags); if (newDoc) { newDoc->SetDocumentName(temp->GetDocumentName()); newDoc->SetDocumentTemplate(temp); newDoc->OnNewDocument(); } return newDoc; } wxDocTemplate *temp = SelectDocumentType(templates, n); delete[] templates; if (temp) { wxDocument *newDoc = temp->CreateDocument(path, flags); if (newDoc) { newDoc->SetDocumentName(temp->GetDocumentName()); newDoc->SetDocumentTemplate(temp); newDoc->OnNewDocument(); } return newDoc; } else return NULL; } // Existing document wxDocTemplate *temp = NULL; wxString path2(""); if (path != "") path2 = path; if (flags & wxDOC_SILENT) temp = FindTemplateForPath(path2); else temp = SelectDocumentPath(templates, n, path2, flags); delete[] templates; if (temp) { wxDocument *newDoc = temp->CreateDocument(path2, flags); if (newDoc) { newDoc->SetDocumentName(temp->GetDocumentName()); newDoc->SetDocumentTemplate(temp); if (!newDoc->OnOpenDocument(path2)) { delete newDoc; return NULL; } AddFileToHistory(path2); } return newDoc; } else return NULL; } wxView *wxDocManager::CreateView(wxDocument *doc, long flags) { wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()]; int n =0; int i; for (i = 0; i < m_templates.Number(); i++) { wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data()); if (temp->IsVisible()) { if (temp->GetDocumentName() == doc->GetDocumentName()) { templates[n] = temp; n ++; } } } if (n == 0) { delete[] templates; return NULL; } if (n == 1) { wxDocTemplate *temp = templates[0]; delete[] templates; wxView *view = temp->CreateView(doc, flags); if (view) view->SetViewName(temp->GetViewName()); return view; } wxDocTemplate *temp = SelectViewType(templates, n); delete[] templates; if (temp) { wxView *view = temp->CreateView(doc, flags); if (view) view->SetViewName(temp->GetViewName()); return view; } else return NULL; } // Not yet implemented void wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags)) { } // Not yet implemented bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc)) { return FALSE; } wxDocument *wxDocManager::GetCurrentDocument(void) const { if (m_currentView) return m_currentView->GetDocument(); else return NULL; } // Make a default document name bool wxDocManager::MakeDefaultName(wxString& name) { char buf[256]; sprintf(buf, "unnamed%d", m_defaultDocumentNameCounter); m_defaultDocumentNameCounter ++; name = buf; return TRUE; } // Not yet implemented wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path)) { return NULL; } // File history management void wxDocManager::AddFileToHistory(const wxString& file) { if (m_fileHistory) m_fileHistory->AddFileToHistory(file); } wxString wxDocManager::GetHistoryFile(int i) const { if (m_fileHistory) return wxString(m_fileHistory->GetHistoryFile(i)); else return wxString(""); } void wxDocManager::FileHistoryUseMenu(wxMenu *menu) { if (m_fileHistory) m_fileHistory->FileHistoryUseMenu(menu); } void wxDocManager::FileHistoryLoad(const wxString& resourceFile, const wxString& section) { if (m_fileHistory) m_fileHistory->FileHistoryLoad(resourceFile, section); } void wxDocManager::FileHistorySave(const wxString& resourceFile, const wxString& section) { if (m_fileHistory) m_fileHistory->FileHistorySave(resourceFile, section); } int wxDocManager::GetNoHistoryFiles(void) const { if (m_fileHistory) return m_fileHistory->GetNoHistoryFiles(); else return 0; } static char *FindExtension(char *path) { static char ext[10]; int len = strlen(path); if (path) { int i = 0; for (i = (len-1); i > 0; i --) if (path[i] == '.') break; if (path[i] == '.') { int j; for (j = i+1; j < len; j++) ext[(int)(j-(i+1))] = (char)wxToLower(path[j]); // NOTE Should not use tolower under UNIX ext[j-(i+1)] = 0; return ext; } else return NULL; } else return NULL; } // Given a path, try to find a matching template. Won't // always work, of course. wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path) { char *theExt = FindExtension((char *)(const char *)path); if (!theExt) return NULL; wxDocTemplate *theTemplate = NULL; if (m_templates.Number() == 1) return (wxDocTemplate *)m_templates.First()->Data(); // Find the template which this extension corresponds to int i; for (i = 0; i < m_templates.Number(); i++) { wxDocTemplate *temp = (wxDocTemplate *)m_templates.Nth(i)->Data(); if (strcmp(temp->GetDefaultExtension(), theExt) == 0) { theTemplate = temp; break; } } return theTemplate; } // Prompts user to open a file, using file specs in templates. // How to implement in wxWindows? Must extend the file selector // dialog or implement own; OR match the extension to the // template extension. wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates, int noTemplates, wxString& path, long WXUNUSED(flags), bool WXUNUSED(save)) { // We can only have multiple filters in Windows #ifdef __WXMSW__ char *descrBuf = new char[1000]; descrBuf[0] = 0; int i; for (i = 0; i < noTemplates; i++) { if (templates[i]->IsVisible()) { strcat(descrBuf, templates[i]->GetDescription()); strcat(descrBuf, " ("); strcat(descrBuf, templates[i]->GetFileFilter()); strcat(descrBuf, ") "); strcat(descrBuf, "|"); strcat(descrBuf, templates[i]->GetFileFilter()); strcat(descrBuf, "|"); } } int len = strlen(descrBuf); if (len > 0) // Omit final "|" descrBuf[len-1] = 0; char *pathTmp = wxFileSelector("Select a file", "", "", "", descrBuf, 0, wxTheApp->GetTopWindow()); delete[] descrBuf; if (pathTmp) { path = pathTmp; char *theExt = FindExtension((char *)(const char *)path); if (!theExt) return NULL; // This is dodgy in that we're selecting the template on the // basis of the file extension, which may not be a standard // one. We really want to know exactly which template was // chosen by using a more advanced file selector. wxDocTemplate *theTemplate = FindTemplateForPath(path); return theTemplate; } else { path = ""; return NULL; } #else // In all other windowing systems, until we have more advanced // file selectors, we must select the document type (template) first, and // _then_ pop up the file selector. wxDocTemplate *temp = SelectDocumentType(templates, noTemplates); if (!temp) return NULL; char *pathTmp = wxFileSelector("Select a file", "", "", temp->GetDefaultExtension(), temp->GetFileFilter(), 0, wxTheApp->GetTopWindow()); if (pathTmp) { path = pathTmp; return temp; } else return NULL; #endif } wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates, int noTemplates) { char **strings = new char *[noTemplates]; char **data = new char *[noTemplates]; int i; int n = 0; for (i = 0; i < noTemplates; i++) { if (templates[i]->IsVisible()) { strings[n] = WXSTRINGCAST templates[i]->m_description; data[n] = (char *)templates[i]; n ++; } } if (n == 0) { delete[] strings; delete[] data; return NULL; } else if (n == 1) { wxDocTemplate *temp = (wxDocTemplate *)data[0]; delete[] strings; delete[] data; return temp; } wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData("Select a document template", "Templates", n, strings, data); delete[] strings; delete[] data; return theTemplate; } wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates, int noTemplates) { char **strings = new char *[noTemplates]; char **data = new char *[noTemplates]; int i; int n = 0; for (i = 0; i < noTemplates; i++) { if (templates[i]->IsVisible() && templates[i]->GetViewName()) { strings[n] = WXSTRINGCAST templates[i]->m_viewTypeName; data[n] = (char *)templates[i]; n ++; } } wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData("Select a document view", "Views", n, strings, data); delete[] strings; delete[] data; return theTemplate; } void wxDocManager::AssociateTemplate(wxDocTemplate *temp) { if (!m_templates.Member(temp)) m_templates.Append(temp); } void wxDocManager::DisassociateTemplate(wxDocTemplate *temp) { m_templates.DeleteObject(temp); } // Add and remove a document from the manager's list void wxDocManager::AddDocument(wxDocument *doc) { if (!m_docs.Member(doc)) m_docs.Append(doc); } void wxDocManager::RemoveDocument(wxDocument *doc) { m_docs.DeleteObject(doc); } // Views or windows should inform the document manager // when a view is going in or out of focus void wxDocManager::ActivateView(wxView *view, bool activate, bool WXUNUSED(deleting)) { // If we're deactiving, and if we're not actually deleting the view, then // don't reset the current view because we may be going to // a window without a view. // WHAT DID I MEAN BY THAT EXACTLY? /* if (deleting) { if (m_currentView == view) m_currentView = NULL; } else */ { if (activate) m_currentView = view; else m_currentView = NULL; } } /* * Default document child frame */ BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame) EVT_ACTIVATE(wxDocChildFrame::OnActivate) END_EVENT_TABLE() wxDocChildFrame::wxDocChildFrame(wxDocument *doc, wxView *view, wxFrame *frame, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name): wxFrame(frame, id, title, pos, size, style, name) { m_childDocument = doc; m_childView = view; if (view) view->SetFrame(this); } wxDocChildFrame::~wxDocChildFrame(void) { } // Extend event processing to search the view's event table bool wxDocChildFrame::ProcessEvent(wxEvent& event) { if (m_childView) m_childView->Activate(TRUE); if ( !m_childView || ! m_childView->ProcessEvent(event) ) { // Only hand up to the parent if it's a menu command if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event)) return wxEvtHandler::ProcessEvent(event); else return TRUE; } else return TRUE; } void wxDocChildFrame::OnActivate(wxActivateEvent& event) { wxFrame::OnActivate(event); if (m_childView) m_childView->Activate(event.GetActive()); } bool wxDocChildFrame::OnClose(void) { // Close view but don't delete the frame while doing so! // ...since it will be deleted by wxWindows if we return TRUE. if (m_childView) { bool ans = m_childView->Close(FALSE); // FALSE means don't delete associated window if (ans) { m_childView->Activate(FALSE); delete m_childView; m_childView = NULL; m_childDocument = NULL; } return ans; } else return TRUE; } /* * Default parent frame */ BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame) EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit) EVT_MENU_RANGE(wxID_FILE1, wxID_FILE2, wxDocParentFrame::OnMRUFile) END_EVENT_TABLE() wxDocParentFrame::wxDocParentFrame(wxDocManager *manager, wxFrame *frame, wxWindowID id, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name): wxFrame(frame, id, title, pos, size, style, name) { m_docManager = manager; } void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event)) { Close(); } void wxDocParentFrame::OnMRUFile(wxCommandEvent& event) { wxString f(m_docManager->GetHistoryFile(event.GetSelection() - wxID_FILE1)); if (f != "") (void)m_docManager->CreateDocument(f, wxDOC_SILENT); } // Extend event processing to search the view's event table bool wxDocParentFrame::ProcessEvent(wxEvent& event) { // Try the document manager, then do default processing if (!m_docManager || !m_docManager->ProcessEvent(event)) return wxEvtHandler::ProcessEvent(event); else return TRUE; } // Define the behaviour for the frame closing // - must delete all frames except for the main one. bool wxDocParentFrame::OnClose(void) { return m_docManager->Clear(FALSE); } #if USE_PRINTING_ARCHITECTURE wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title): wxPrintout(WXSTRINGCAST title) { m_printoutView = view; } bool wxDocPrintout::OnPrintPage(int WXUNUSED(page)) { wxDC *dc = GetDC(); // Get the logical pixels per inch of screen and printer int ppiScreenX, ppiScreenY; GetPPIScreen(&ppiScreenX, &ppiScreenY); int ppiPrinterX, ppiPrinterY; GetPPIPrinter(&ppiPrinterX, &ppiPrinterY); // This scales the DC so that the printout roughly represents the // the screen scaling. The text point size _should_ be the right size // but in fact is too small for some reason. This is a detail that will // need to be addressed at some point but can be fudged for the // moment. float scale = (float)((float)ppiPrinterX/(float)ppiScreenX); // Now we have to check in case our real page size is reduced // (e.g. because we're drawing to a print preview memory DC) int pageWidth, pageHeight; int w, h; dc->GetSize(&w, &h); GetPageSizePixels(&pageWidth, &pageHeight); // If printer pageWidth == current DC width, then this doesn't // change. But w might be the preview bitmap width, so scale down. float overallScale = scale * (float)(w/(float)pageWidth); dc->SetUserScale(overallScale, overallScale); if (m_printoutView) { m_printoutView->OnDraw(dc); } return TRUE; } bool wxDocPrintout::HasPage(int pageNum) { return (pageNum == 1); } bool wxDocPrintout::OnBeginDocument(int startPage, int endPage) { if (!wxPrintout::OnBeginDocument(startPage, endPage)) return FALSE; return TRUE; } void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo) { *minPage = 1; *maxPage = 1; *selPageFrom = 1; *selPageTo = 1; } #endif /* * Command processing framework */ wxCommand::wxCommand(bool canUndoIt, const wxString& name) { m_canUndo = canUndoIt; m_commandName = name; } wxCommand::~wxCommand(void) { } // Command processor wxCommandProcessor::wxCommandProcessor(int maxCommands) { m_maxNoCommands = maxCommands; m_currentCommand = NULL; m_commandEditMenu = NULL; } wxCommandProcessor::~wxCommandProcessor(void) { ClearCommands(); } // Pass a command to the processor. The processor calls Do(); // if successful, is appended to the command history unless // storeIt is FALSE. bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt) { bool success = command->Do(); if (success && storeIt) { if (m_commands.Number() == m_maxNoCommands) { wxNode *firstNode = m_commands.First(); wxCommand *firstCommand = (wxCommand *)firstNode->Data(); delete firstCommand; delete firstNode; } // Correct a bug: we must chop off the current 'branch' // so that we're at the end of the command list. if (!m_currentCommand) ClearCommands(); else { wxNode *node = m_currentCommand->Next(); while (node) { wxNode *next = node->Next(); delete (wxCommand *)node->Data(); delete node; node = next; } } m_commands.Append(command); m_currentCommand = m_commands.Last(); SetMenuStrings(); } return success; } bool wxCommandProcessor::Undo(void) { if (m_currentCommand) { wxCommand *command = (wxCommand *)m_currentCommand->Data(); if (command->CanUndo()) { bool success = command->Undo(); if (success) { m_currentCommand = m_currentCommand->Previous(); SetMenuStrings(); return TRUE; } } } return FALSE; } bool wxCommandProcessor::Redo(void) { wxCommand *redoCommand = NULL; wxNode *redoNode = NULL; if (m_currentCommand && m_currentCommand->Next()) { redoCommand = (wxCommand *)m_currentCommand->Next()->Data(); redoNode = m_currentCommand->Next(); } else { if (m_commands.Number() > 0) { redoCommand = (wxCommand *)m_commands.First()->Data(); redoNode = m_commands.First(); } } if (redoCommand) { bool success = redoCommand->Do(); if (success) { m_currentCommand = redoNode; SetMenuStrings(); return TRUE; } } return FALSE; } bool wxCommandProcessor::CanUndo(void) { if (m_currentCommand) return ((wxCommand *)m_currentCommand->Data())->CanUndo(); return FALSE; } void wxCommandProcessor::Initialize(void) { m_currentCommand = m_commands.Last(); SetMenuStrings(); } void wxCommandProcessor::SetMenuStrings(void) { if (m_commandEditMenu) { wxString buf; if (m_currentCommand) { wxCommand *command = (wxCommand *)m_currentCommand->Data(); wxString commandName(command->GetName()); if (commandName == "") commandName = "Unnamed command"; bool canUndo = command->CanUndo(); if (canUndo) buf = wxString("&Undo ") + commandName; else buf = wxString("Can't &Undo ") + commandName; m_commandEditMenu->SetLabel(wxID_UNDO, buf); m_commandEditMenu->Enable(wxID_UNDO, canUndo); // We can redo, if we're not at the end of the history. if (m_currentCommand->Next()) { wxCommand *redoCommand = (wxCommand *)m_currentCommand->Next()->Data(); wxString redoCommandName(redoCommand->GetName()); if (redoCommandName == "") redoCommandName = "Unnamed command"; buf = wxString("&Redo ") + redoCommandName; m_commandEditMenu->SetLabel(wxID_REDO, buf); m_commandEditMenu->Enable(wxID_REDO, TRUE); } else { m_commandEditMenu->SetLabel(wxID_REDO, "&Redo"); m_commandEditMenu->Enable(wxID_REDO, FALSE); } } else { m_commandEditMenu->SetLabel(wxID_UNDO, "&Undo"); m_commandEditMenu->Enable(wxID_UNDO, FALSE); if (m_commands.Number() == 0) { m_commandEditMenu->SetLabel(wxID_REDO, "&Redo"); m_commandEditMenu->Enable(wxID_REDO, FALSE); } else { // currentCommand is NULL but there are commands: this means that // we've undone to the start of the list, but can redo the first. wxCommand *redoCommand = (wxCommand *)m_commands.First()->Data(); wxString redoCommandName(redoCommand->GetName()); if (!redoCommandName) redoCommandName = "Unnamed command"; buf = wxString("&Redo ") + redoCommandName; m_commandEditMenu->SetLabel(wxID_REDO, buf); m_commandEditMenu->Enable(wxID_REDO, TRUE); } } } } void wxCommandProcessor::ClearCommands(void) { wxNode *node = m_commands.First(); while (node) { wxCommand *command = (wxCommand *)node->Data(); delete command; delete node; node = m_commands.First(); } m_currentCommand = NULL; } /* * File history processor */ wxFileHistory::wxFileHistory(int maxFiles) { m_fileMaxFiles = maxFiles; m_fileMenu = NULL; m_fileHistoryN = 0; m_fileHistory = new char *[m_fileMaxFiles]; } wxFileHistory::~wxFileHistory(void) { int i; for (i = 0; i < m_fileHistoryN; i++) delete[] m_fileHistory[i]; delete[] m_fileHistory; } // File history management void wxFileHistory::AddFileToHistory(const wxString& file) { if (!m_fileMenu) return; int i; // Check we don't already have this file for (i = 0; i < m_fileHistoryN; i++) { if (m_fileHistory[i] && wxString(m_fileHistory[i]) == file) return; } // Add to the project file history: // Move existing files (if any) down so we can insert file at beginning. // First delete filename that has popped off the end of the array (if any) if (m_fileHistoryN == m_fileMaxFiles) { delete[] m_fileHistory[m_fileMaxFiles-1]; m_fileHistory[m_fileMaxFiles-1] = NULL; } if (m_fileHistoryN < m_fileMaxFiles) { if (m_fileHistoryN == 0) m_fileMenu->AppendSeparator(); m_fileMenu->Append(wxID_FILE1+m_fileHistoryN, "[EMPTY]"); m_fileHistoryN ++; } // Shuffle filenames down for (i = (m_fileHistoryN-1); i > 0; i--) { m_fileHistory[i] = m_fileHistory[i-1]; } m_fileHistory[0] = copystring(file); for (i = 0; i < m_fileHistoryN; i++) if (m_fileHistory[i]) { char buf[400]; sprintf(buf, "&%d %s", i+1, m_fileHistory[i]); m_fileMenu->SetLabel(wxID_FILE1+i, buf); } } wxString wxFileHistory::GetHistoryFile(int i) const { if (i < m_fileHistoryN) return wxString(m_fileHistory[i]); else return wxString(""); } void wxFileHistory::FileHistoryUseMenu(wxMenu *menu) { m_fileMenu = menu; } void wxFileHistory::FileHistoryLoad(const wxString& resourceFile, const wxString& section) { #if USE_RESOURCES m_fileHistoryN = 0; char buf[400]; sprintf(buf, "file%d", m_fileHistoryN+1); char *historyFile = NULL; while ((m_fileHistoryN <= m_fileMaxFiles) && wxGetResource(section, buf, &historyFile, resourceFile) && historyFile) { // wxGetResource allocates memory so this is o.k. m_fileHistory[m_fileHistoryN] = historyFile; m_fileHistoryN ++; sprintf(buf, "file%d", m_fileHistoryN+1); historyFile = NULL; } #endif } void wxFileHistory::FileHistorySave(const wxString& resourceFile, const wxString& section) { #if USE_RESOURCES char buf[400]; int i; for (i = 0; i < m_fileHistoryN; i++) { sprintf(buf, "file%d", i+1); wxWriteResource(section, buf, m_fileHistory[i], resourceFile); } #endif } #if 0 /* * wxPrintInfo */ wxPrintInfo::wxPrintInfo(void) { pageNumber = 1; } wxPrintInfo::~wxPrintInfo(void) { } #endif /* * Permits compatibility with existing file formats and functions * that manipulate files directly */ bool wxTransferFileToStream(const wxString& filename, ostream& stream) { FILE *fd1; int ch; if ((fd1 = fopen (WXSTRINGCAST filename, "rb")) == NULL) return FALSE; while ((ch = getc (fd1)) != EOF) stream << (unsigned char)ch; fclose (fd1); return TRUE; } bool wxTransferStreamToFile(istream& stream, const wxString& filename) { FILE *fd1; int ch; if ((fd1 = fopen (WXSTRINGCAST filename, "wb")) == NULL) { return FALSE; } while (!stream.eof()) { ch = stream.get(); if (!stream.eof()) putc (ch, fd1); } fclose (fd1); return TRUE; } #endif // End USE_DOC_VIEW_ARCHITECTURE