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:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13 #ifndef WX_PRECOMP
  14     #include "wx/log.h"
  15     #include "wx/app.h"
  16     #include "wx/dialog.h"
  17     #include "wx/settings.h"
  18 #endif //WX_PRECOMP
  19
  20 #include "wx/cocoa/autorelease.h"
  21 #include "wx/cocoa/string.h"
  22
  23 #import <AppKit/NSPanel.h>
  24 #import <AppKit/NSApplication.h>
  25 #import <AppKit/NSEvent.h>
  26 #import <Foundation/NSRunLoop.h>
  27
  28 // Lists to keep track of windows, so we can disable/enable them
  29 // for modal dialogs
  30 static wxWindowList wxModalDialogs;
  31
  32 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  33
  34 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
  35   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  36   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  37   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  38   EVT_CLOSE(wxDialog::OnCloseWindow)
  39 END_EVENT_TABLE()
  40
  41 WX_IMPLEMENT_COCOA_OWNER(wxDialog,NSPanel,NSWindow,NSWindow)
  42
  43 void wxDialog::Init()
  44 {
  45     m_isModal = false;
  46     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
  47 }
  48
  49 bool wxDialog::Create(wxWindow *parent, wxWindowID winid,
  50            const wxString& title,
  51            const wxPoint& pos,
  52            const wxSize& size,
  53            long style,
  54            const wxString& name)
  55 {
  56     wxAutoNSAutoreleasePool pool;
  57     wxTopLevelWindows.Append(this);
  58
  59     if(!CreateBase(parent,winid,pos,size,style,wxDefaultValidator,name))
  60         return false;
  61
  62     if (parent)
  63         parent->AddChild(this);
  64
  65     NSRect cocoaRect = NSMakeRect(300,300,200,200);
  66
  67     unsigned int cocoaStyle = 0;
  68     cocoaStyle |= NSTitledWindowMask;
  69     cocoaStyle |= NSClosableWindowMask;
  70     cocoaStyle |= NSMiniaturizableWindowMask;
  71     cocoaStyle |= NSResizableWindowMask;
  72
  73     m_cocoaNSWindow = NULL;
  74     SetNSPanel([[NSPanel alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
  75     // NOTE: SetNSWindow has retained the Cocoa object for this object.
  76     // Because we do not release on close, the following release matches the
  77     // above alloc and thus the retain count will be 1.
  78     [m_cocoaNSWindow release];
  79     wxLogTrace(wxTRACE_COCOA_RetainRelease,wxT("wxDialog m_cocoaNSWindow retainCount=%d"),[m_cocoaNSWindow retainCount]);
  80     [m_cocoaNSWindow setTitle:wxNSStringWithWxString(title)];
  81     [m_cocoaNSWindow setHidesOnDeactivate:NO];
  82
  83     return true;
  84 }
  85
  86 wxDialog::~wxDialog()
  87 {
  88     DisassociateNSPanel(GetNSPanel());
  89 }
  90
  91 void wxDialog::CocoaDelegate_windowWillClose(void)
  92 {
  93     m_closed = true;
  94     /* Actually, this isn't true anymore */
  95     wxLogTrace(wxTRACE_COCOA,wxT("Woah: Dialogs are not generally closed"));
  96 }
  97
  98 void wxDialog::SetModal(bool flag)
  99 {
 100     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 101 }
 102
 103 bool wxDialog::Show(bool show)
 104 {
 105     if(m_isShown == show)
 106         return false;
 107
 108     if(show)
 109     {
 110         wxAutoNSAutoreleasePool pool;
 111         InitDialog();
 112         if(IsModal())
 113         {   // ShowModal() will show the dialog
 114             m_isShown = true;
 115             return true;
 116         }
 117     }
 118     else
 119     {
 120         if(IsModal())
 121         {   // this doesn't hide the dialog, base class Show(false) does.
 122             wxLogTrace(wxTRACE_COCOA,wxT("abortModal"));
 123             [wxTheApp->GetNSApplication() abortModal];
 124             wxModalDialogs.DeleteObject(this);
 125             m_isModal = false;
 126         }
 127     }
 128     return wxTopLevelWindow::Show(show);
 129 }
 130
 131 // Shows the dialog and begins a modal event loop.  When the event loop
 132 // is stopped (via EndModal()) it returns the exit code.
 133 int wxDialog::ShowModal()
 134 {
 135     wxCHECK_MSG(!IsModal(),GetReturnCode(),wxT("wxDialog::ShowModal called within its own modal loop"));
 136
 137     // Show(true) will set m_isShown = true
 138     m_isShown = false;
 139     m_isModal = true;
 140     wxModalDialogs.Append(this);
 141
 142     wxLogTrace(wxTRACE_COCOA,wxT("runModal"));
 143     NSApplication *theNSApp = wxTheApp->GetNSApplication();
 144     // If the app hasn't started, flush the event queue
 145     // If we don't do this, the Dock doesn't get the message that
 146     // the app has started so will refuse to activate it.
 147     if(![theNSApp isRunning])
 148     {
 149         // We should only do a few iterations so one pool should be okay
 150         wxAutoNSAutoreleasePool pool;
 151         while(NSEvent *event = [theNSApp
 152                     nextEventMatchingMask:NSAnyEventMask
 153                     untilDate:[NSDate distantPast]
 154                     inMode:NSDefaultRunLoopMode
 155                     dequeue: YES])
 156         {
 157             [theNSApp sendEvent: event];
 158         }
 159     }
 160
 161     Show(true);
 162     do {
 163         wxAutoNSAutoreleasePool pool;
 164         [wxTheApp->GetNSApplication() runModalForWindow:m_cocoaNSWindow];
 165     } while(0);
 166     wxLogTrace(wxTRACE_COCOA,wxT("runModal END"));
 167
 168     return GetReturnCode();
 169 }
 170
 171 void wxDialog::EndModal(int retCode)
 172 {
 173     wxASSERT_MSG(IsModal(), wxT("EndModal() should only be used within ShowModal()"));
 174     SetReturnCode(retCode);
 175     Show(false);
 176 }
 177
 178 void wxDialog::EndDialog(int retCode)
 179 {
 180     if(IsModal())
 181         EndModal(retCode);
 182     else
 183         Show(false);
 184 }
 185
 186 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 187 {
 188     // We'll send a Cancel message by default,
 189     // which may close the dialog.
 190     // Check for looping if the Cancel event handler calls Close().
 191
 192     // Note that if a cancel button and handler aren't present in the dialog,
 193     // nothing will happen when you close the dialog via the window manager, or
 194     // via Close().
 195     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 196     // created on the stack.
 197     // However, this does mean that calling dialog->Close() won't delete the dialog
 198     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 199     // sure to destroy the dialog.
 200     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 201     // ALWAYS VETO THIS EVENT!!!!
 202     event.Veto();
 203
 204     static wxList closing;
 205
 206     if ( closing.Member(this) )
 207     {
 208         wxLogDebug(wxT("WARNING: Attempting to recursively call Close for dialog"));
 209         return;
 210     }
 211
 212     closing.Append(this);
 213
 214     wxLogTrace(wxTRACE_COCOA,wxT("Sending Cancel Event"));
 215     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 216     cancelEvent.SetEventObject( this );
 217     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 218
 219     closing.DeleteObject(this);
 220 }
 221
 222 // Standard buttons
 223 void wxDialog::OnOK(wxCommandEvent& event)
 224 {
 225     if ( Validate() && TransferDataFromWindow() )
 226     {
 227         EndDialog(wxID_OK);
 228     }
 229 }
 230
 231 void wxDialog::OnApply(wxCommandEvent& event)
 232 {
 233     if (Validate())
 234         TransferDataFromWindow();
 235     // TODO probably need to disable the Apply button until things change again
 236 }
 237
 238 void wxDialog::OnCancel(wxCommandEvent& event)
 239 {
 240     wxLogTrace(wxTRACE_COCOA,wxT("Cancelled!"));
 241     EndDialog(wxID_CANCEL);
 242 }
 243