src/cocoa/dialog.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/dialog.mm
   3 // Purpose:     wxDialog class
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2002/12/15
   7 // RCS-ID:      $Id$
   8 // Copyright:   2002 David Elliott
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/dialog.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/app.h"
  19     #include "wx/settings.h"
  20 #endif //WX_PRECOMP
  21
  22 #include "wx/modalhook.h"
  23 #include "wx/cocoa/autorelease.h"
  24 #include "wx/cocoa/string.h"
  25
  26 #import <AppKit/NSPanel.h>
  27 #import <AppKit/NSApplication.h>
  28 #import <AppKit/NSEvent.h>
  29 #import <Foundation/NSRunLoop.h>
  30
  31 // Lists to keep track of windows, so we can disable/enable them
  32 // for modal dialogs
  33 static wxWindowList wxModalDialogs;
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  36
  37 WX_IMPLEMENT_COCOA_OWNER(wxDialog,NSPanel,NSWindow,NSWindow)
  38
  39 void wxDialog::Init()
  40 {
  41     m_isModal = false;
  42     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  43 }
  44
  45 bool wxDialog::Create(wxWindow *parent, wxWindowID winid,
  46            const wxString& title,
  47            const wxPoint& pos,
  48            const wxSize& size,
  49            long style,
  50            const wxString& name)
  51 {
  52     wxAutoNSAutoreleasePool pool;
  53     wxTopLevelWindows.Append(this);
  54
  55     if(!CreateBase(parent,winid,pos,size,style,wxDefaultValidator,name))
  56         return false;
  57
  58     if (parent)
  59         parent->AddChild(this);
  60
  61     unsigned int cocoaStyle = NSWindowStyleForWxStyle(style);
  62
  63     NSRect cocoaRect = MakeInitialNSWindowContentRect(pos,size,cocoaStyle);
  64
  65     m_cocoaNSWindow = NULL;
  66     SetNSPanel([[NSPanel alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
  67     // NOTE: SetNSWindow has retained the Cocoa object for this object.
  68     // Because we do not release on close, the following release matches the
  69     // above alloc and thus the retain count will be 1.
  70     [m_cocoaNSWindow release];
  71     wxLogTrace(wxTRACE_COCOA_RetainRelease,wxT("wxDialog m_cocoaNSWindow retainCount=%d"),[m_cocoaNSWindow retainCount]);
  72     [m_cocoaNSWindow setTitle:wxNSStringWithWxString(title)];
  73     [m_cocoaNSWindow setHidesOnDeactivate:NO];
  74
  75     return true;
  76 }
  77
  78 wxDialog::~wxDialog()
  79 {
  80     DisassociateNSPanel(GetNSPanel());
  81 }
  82
  83 void wxDialog::CocoaDelegate_windowWillClose(void)
  84 {
  85     m_closed = true;
  86     /* Actually, this isn't true anymore */
  87     wxLogTrace(wxTRACE_COCOA,wxT("Woah: Dialogs are not generally closed"));
  88 }
  89
  90 void wxDialog::SetModal(bool flag)
  91 {
  92     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
  93 }
  94
  95 bool wxDialog::Show(bool show)
  96 {
  97     if(m_isShown == show)
  98         return false;
  99
 100     if(show)
 101     {
 102         wxAutoNSAutoreleasePool pool;
 103
 104         if (CanDoLayoutAdaptation())
 105                 DoLayoutAdaptation();
 106
 107         InitDialog();
 108         if(IsModal())
 109         {   // ShowModal() will show the dialog
 110             m_isShown = true;
 111             return true;
 112         }
 113     }
 114     else
 115     {
 116         if(IsModal())
 117         {   // this doesn't hide the dialog, base class Show(false) does.
 118             wxLogTrace(wxTRACE_COCOA,wxT("abortModal"));
 119             [wxTheApp->GetNSApplication() abortModal];
 120             wxModalDialogs.DeleteObject(this);
 121             m_isModal = false;
 122         }
 123     }
 124     return wxTopLevelWindow::Show(show);
 125 }
 126
 127 // Shows the dialog and begins a modal event loop.  When the event loop
 128 // is stopped (via EndModal()) it returns the exit code.
 129 int wxDialog::ShowModal()
 130 {
 131     WX_HOOK_MODAL_DIALOG();
 132
 133     wxCHECK_MSG(!IsModal(),GetReturnCode(),wxT("wxDialog::ShowModal called within its own modal loop"));
 134
 135     // Show(true) will set m_isShown = true
 136     m_isShown = false;
 137     m_isModal = true;
 138     wxModalDialogs.Append(this);
 139
 140     wxLogTrace(wxTRACE_COCOA,wxT("runModal"));
 141     NSApplication *theNSApp = wxTheApp->GetNSApplication();
 142     // If the app hasn't started, flush the event queue
 143     // If we don't do this, the Dock doesn't get the message that
 144     // the app has started so will refuse to activate it.
 145     if(![theNSApp isRunning])
 146     {
 147         // We should only do a few iterations so one pool should be okay
 148         wxAutoNSAutoreleasePool pool;
 149         while(NSEvent *event = [theNSApp
 150                     nextEventMatchingMask:NSAnyEventMask
 151                     untilDate:[NSDate distantPast]
 152                     inMode:NSDefaultRunLoopMode
 153                     dequeue: YES])
 154         {
 155             [theNSApp sendEvent: event];
 156         }
 157     }
 158
 159     Show(true);
 160     do {
 161         wxAutoNSAutoreleasePool pool;
 162         [wxTheApp->GetNSApplication() runModalForWindow:m_cocoaNSWindow];
 163     } while(0);
 164     wxLogTrace(wxTRACE_COCOA,wxT("runModal END"));
 165
 166     return GetReturnCode();
 167 }
 168
 169 void wxDialog::EndModal(int retCode)
 170 {
 171     wxASSERT_MSG(IsModal(), wxT("EndModal() should only be used within ShowModal()"));
 172     SetReturnCode(retCode);
 173     Show(false);
 174 }