#include "wx/vector.h"
#include "wx/scopedarray.h"
#include "wx/scopedptr.h"
+#include "wx/except.h"
#if wxUSE_STD_IOSTREAM
#include "wx/ioswrap.h"
namespace
{
-wxWindow *wxFindSuitableParent()
-{
- wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
-
- return win ? win : wxTheApp->GetTopWindow();
-}
-
wxString FindExtension(const wxString& path)
{
wxString ext;
bool wxDocument::OnNewDocument()
{
- if ( !OnSaveModified() )
- return false;
+ // notice that there is no need to neither reset nor even check the
+ // modified flag here as the document itself is a new object (this is only
+ // called from CreateDocument()) and so it shouldn't be saved anyhow even
+ // if it is modified -- this could happen if the user code creates
+ // documents pre-filled with some user-entered (and which hence must not be
+ // lost) information
- DeleteContents();
- Modify(false);
SetDocumentSaved(false);
const wxString name = GetDocumentManager()->MakeNewDocumentName();
bool wxDocument::OnOpenDocument(const wxString& file)
{
- if ( !OnSaveModified() )
- return false;
+ // notice that there is no need to check the modified flag here for the
+ // reasons explained in OnNewDocument()
if ( !DoOpenDocument(file) )
return false;
SetFilename(file, true);
- Modify(false);
- m_savedYet = true;
+
+ // stretching the logic a little this does make sense because the document
+ // had been saved into the file we just loaded it from, it just could have
+ // happened during a previous program execution, it's just that the name of
+ // this method is a bit unfortunate, it should probably have been called
+ // HasAssociatedFileName()
+ SetDocumentSaved(true);
UpdateAllViews();
GetUserReadableName()
),
wxTheApp->GetAppDisplayName(),
- wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE,
- wxFindSuitableParent()
+ wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE
) )
{
case wxNO:
m_viewDocument = NULL;
m_viewFrame = NULL;
+
+ m_docChildFrame = NULL;
}
wxView::~wxView()
{
GetDocumentManager()->ActivateView(this, false);
- m_viewDocument->RemoveView(this);
+
+ // reset our frame view first, before removing it from the document as
+ // SetView(NULL) is a simple call while RemoveView() may result in user
+ // code being executed and this user code can, for example, show a message
+ // box which would result in an activation event for m_docChildFrame and so
+ // could reactivate the view being destroyed -- unless we reset it first
+ if ( m_docChildFrame && m_docChildFrame->GetView() == this )
+ {
+ // prevent it from doing anything with us
+ m_docChildFrame->SetView(NULL);
+
+ // it doesn't make sense to leave the frame alive if its associated
+ // view doesn't exist any more so unconditionally close it as well
+ //
+ // notice that we only get here if m_docChildFrame is non-NULL in the
+ // first place and it will be always NULL if we're deleted because our
+ // frame was closed, so this only catches the case of directly deleting
+ // the view, as it happens if its creation fails in wxDocTemplate::
+ // CreateView() for example
+ m_docChildFrame->GetWindow()->Destroy();
+ }
+
+ if ( m_viewDocument )
+ m_viewDocument->RemoveView(this);
+}
+
+void wxView::SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame)
+{
+ SetFrame(docChildFrame ? docChildFrame->GetWindow() : NULL);
+ m_docChildFrame = docChildFrame;
}
-bool wxView::TryValidator(wxEvent& event)
+bool wxView::TryBefore(wxEvent& event)
{
wxDocument * const doc = GetDocument();
return doc && doc->ProcessEventHere(event);
// Tries to dynamically construct an object of the right class.
wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
{
+ // InitDocument() is supposed to delete the document object if its
+ // initialization fails so don't use wxScopedPtr<> here: this is fragile
+ // but unavoidable because the default implementation uses CreateView()
+ // which may -- or not -- create a wxView and if it does create it and its
+ // initialization fails then the view destructor will delete the document
+ // (via RemoveView()) and as we can't distinguish between the two cases we
+ // just have to assume that it always deletes it in case of failure
wxDocument * const doc = DoCreateDocument();
- // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
- // fails, is this intentional?
-
return doc && InitDocument(doc, path, flags) ? doc : NULL;
}
wxString wxDocManager::GetLastDirectory() const
{
- // use the system-dependent default location for the document files if
- // we're being opened for the first time
+ // if we haven't determined the last used directory yet, do it now
if ( m_lastDirectory.empty() )
{
+ // we're going to modify m_lastDirectory in this const method, so do it
+ // via non-const self pointer instead of const this one
wxDocManager * const self = const_cast<wxDocManager *>(this);
- self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
+
+ // first try to reuse the directory of the most recently opened file:
+ // this ensures that if the user opens a file, closes the program and
+ // runs it again the "Open file" dialog will open in the directory of
+ // the last file he used
+ wxString lastOpened = GetHistoryFile(0);
+ if ( !lastOpened.empty() )
+ {
+ const wxFileName fn(lastOpened);
+ if ( fn.DirExists() )
+ {
+ self->m_lastDirectory = fn.GetPath();
+ }
+ //else: should we try the next one?
+ }
+
+ // if we don't have any files in the history (yet?), use the
+ // system-dependent default location for the document files
+ if ( m_lastDirectory.empty() )
+ {
+ self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
+ }
}
return m_lastDirectory;
return view;
}
-bool wxDocManager::TryValidator(wxEvent& event)
+bool wxDocManager::TryBefore(wxEvent& event)
{
wxView * const view = GetActiveView();
return view && view->ProcessEventHere(event);
docNew->SetDocumentName(temp->GetDocumentName());
docNew->SetDocumentTemplate(temp);
- // call the appropriate function depending on whether we're creating a new
- // file or opening an existing one
- if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
- : docNew->OnOpenDocument(path)) )
+ wxTRY
{
- // Document is implicitly deleted by DeleteAllViews
- docNew->DeleteAllViews();
- return NULL;
+ // call the appropriate function depending on whether we're creating a
+ // new file or opening an existing one
+ if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
+ : docNew->OnOpenDocument(path)) )
+ {
+ docNew->DeleteAllViews();
+ return NULL;
+ }
}
+ wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
// add the successfully opened file to MRU, but only if we're going to be
// able to reopen it successfully later which requires the template for
int FilterIndex = -1;
- wxWindow* parent = wxFindSuitableParent();
-
wxString pathTmp = wxFileSelectorEx(_("Open File"),
GetLastDirectory(),
wxEmptyString,
&FilterIndex,
- descrBuf,
- 0,
- parent);
+ descrBuf);
wxDocTemplate *theTemplate = NULL;
if (!pathTmp.empty())
wxMessageBox(_("Sorry, could not open this file."),
msgTitle,
- wxOK | wxICON_EXCLAMATION | wxCENTRE,
- parent);
+ wxOK | wxICON_EXCLAMATION | wxCENTRE);
path = wxEmptyString;
return NULL;
// allowed templates in runtime.
wxMessageBox(_("Sorry, the format for this file is unknown."),
_("Open File"),
- wxOK | wxICON_EXCLAMATION | wxCENTRE,
- parent);
+ wxOK | wxICON_EXCLAMATION | wxCENTRE);
}
}
else
_("Select a document template"),
_("Templates"),
strings,
- (void **)data.get(),
- wxFindSuitableParent()
+ (void **)data.get()
);
}
_("Select a document view"),
_("Views"),
strings,
- (void **)data.get(),
- wxFindSuitableParent()
+ (void **)data.get()
);
}
}
// ----------------------------------------------------------------------------
-// Default document child frame
+// wxDocChildFrameAnyBase
// ----------------------------------------------------------------------------
-BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
- EVT_ACTIVATE(wxDocChildFrame::OnActivate)
- EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
-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);
-}
-
-bool wxDocChildFrame::TryValidator(wxEvent& event)
+bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
{
- if ( !m_childView )
- return false;
-
- // FIXME: why is this needed here?
- m_childView->Activate(true);
-
- return m_childView->ProcessEventHere(event);
-}
-
-void wxDocChildFrame::OnActivate(wxActivateEvent& event)
-{
- wxFrame::OnActivate(event);
-
- if (m_childView)
- m_childView->Activate(event.GetActive());
-}
+ if ( m_childView )
+ {
+ if ( event.CanVeto() && !m_childView->Close(false) )
+ {
+ event.Veto();
+ return false;
+ }
-void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
-{
- if ( !m_childView )
- return;
+ m_childView->Activate(false);
- // passing false to Close() means to not delete associated window
- if ( event.CanVeto() && !m_childView->Close(false) )
- {
- event.Veto();
- return;
+ // it is important to reset m_childView frame pointer to NULL before
+ // deleting it because while normally it is the frame which deletes the
+ // view when it's closed, the view also closes the frame if it is
+ // deleted directly not by us as indicated by its doc child frame
+ // pointer still being set
+ m_childView->SetDocChildFrame(NULL);
+ delete m_childView;
+ m_childView = NULL;
}
- m_childView->Activate(false);
- delete m_childView;
- m_childView = NULL;
m_childDocument = NULL;
- Destroy();
+ return true;
}
// ----------------------------------------------------------------------------
}
// Extend event processing to search the view's event table
-bool wxDocParentFrame::TryValidator(wxEvent& event)
+bool wxDocParentFrame::TryBefore(wxEvent& event)
{
- return m_docManager && m_docManager->ProcessEventHere(event);
+ if ( m_docManager && m_docManager->ProcessEventHere(event) )
+ return true;
+
+ return wxFrame::TryBefore(event);
}
// Define the behaviour for the frame closing
bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
{
- wxFFile file(filename, _T("rb"));
+#if wxUSE_FFILE
+ wxFFile file(filename, wxT("rb"));
+#elif wxUSE_FILE
+ wxFile file(filename, wxFile::read);
+#endif
if ( !file.IsOpened() )
return false;
bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
{
- wxFFile file(filename, _T("wb"));
+#if wxUSE_FFILE
+ wxFFile file(filename, wxT("wb"));
+#elif wxUSE_FILE
+ wxFile file(filename, wxFile::write);
+#endif
if ( !file.IsOpened() )
return false;
bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
{
- wxFFile file(filename, _T("rb"));
+#if wxUSE_FFILE
+ wxFFile file(filename, wxT("rb"));
+#elif wxUSE_FILE
+ wxFile file(filename, wxFile::read);
+#endif
if ( !file.IsOpened() )
return false;
bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
{
- wxFFile file(filename, _T("wb"));
+#if wxUSE_FFILE
+ wxFFile file(filename, wxT("wb"));
+#elif wxUSE_FILE
+ wxFile file(filename, wxFile::write);
+#endif
if ( !file.IsOpened() )
return false;
projects / wxWidgets.git / blobdiff