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 license
  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     SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  46 }
  47
  48 bool wxDialog::Create(wxWindow *parent, wxWindowID winid,
  49            const wxString& title,
  50            const wxPoint& pos,
  51            const wxSize& size,
  52            long style,
  53            const wxString& name)
  54 {
  55     wxAutoNSAutoreleasePool pool;
  56     wxTopLevelWindows.Append(this);
  57
  58     if(!CreateBase(parent,winid,pos,size,style,wxDefaultValidator,name))
  59         return false;
  60
  61     if (parent)
  62         parent->AddChild(this);
  63
  64     NSRect cocoaRect = NSMakeRect(300,300,200,200);
  65
  66     unsigned int cocoaStyle = 0;
  67     cocoaStyle |= NSTitledWindowMask;
  68     cocoaStyle |= NSClosableWindowMask;
  69     cocoaStyle |= NSMiniaturizableWindowMask;
  70     cocoaStyle |= NSResizableWindowMask;
  71
  72     m_cocoaNSWindow = NULL;
  73     SetNSPanel([[NSPanel alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
  74     // NOTE: SetNSWindow has retained the Cocoa object for this object.
  75     // Because we do not release on close, the following release matches the
  76     // above alloc and thus the retain count will be 1.
  77     [m_cocoaNSWindow release];
  78     wxLogTrace(wxTRACE_COCOA_RetainRelease,wxT("wxDialog m_cocoaNSWindow retainCount=%d"),[m_cocoaNSWindow retainCount]);
  79     [m_cocoaNSWindow setTitle:wxNSStringWithWxString(title)];
  80     [m_cocoaNSWindow setHidesOnDeactivate:NO];
  81
  82     return true;
  83 }
  84
  85 wxDialog::~wxDialog()
  86 {
  87     DisassociateNSPanel(GetNSPanel());
  88 }
  89
  90 void wxDialog::CocoaDelegate_windowWillClose(void)
  91 {
  92     m_closed = true;
  93     /* Actually, this isn't true anymore */
  94     wxLogTrace(wxTRACE_COCOA,wxT("Woah: Dialogs are not generally closed"));
  95 }
  96
  97 void wxDialog::SetModal(bool flag)
  98 {
  99     if ( flag )
 100     {
 101         wxModelessWindows.DeleteObject(this);
 102         m_windowStyle |= wxDIALOG_MODAL ;
 103     }
 104     else
 105     {
 106         m_windowStyle &= ~wxDIALOG_MODAL ;
 107         wxModelessWindows.Append(this);
 108     }
 109 }
 110
 111 bool wxDialog::Show(bool show)
 112 {
 113     if(m_isShown == show)
 114         return false;
 115     if(show)
 116         InitDialog();
 117     if(IsModal())
 118     {
 119         m_isShown = show;
 120         if(show)
 121         {
 122             wxAutoNSAutoreleasePool pool;
 123             wxModalDialogs.Append(this);
 124             wxLogTrace(wxTRACE_COCOA,wxT("runModal"));
 125             NSApplication *theNSApp = wxTheApp->GetNSApplication();
 126             // If the app hasn't started, flush the event queue
 127             // If we don't do this, the Dock doesn't get the message that
 128             // the app has started so will refuse to activate it.
 129             if(![theNSApp isRunning])
 130             {
 131                 while(NSEvent *event = [theNSApp
 132                             nextEventMatchingMask:NSAnyEventMask
 133                             untilDate:[NSDate distantPast]
 134                             inMode:NSDefaultRunLoopMode
 135                             dequeue: YES])
 136                 {
 137                     [theNSApp sendEvent: event];
 138                 }
 139             }
 140             [wxTheApp->GetNSApplication() runModalForWindow:m_cocoaNSWindow];
 141             wxLogTrace(wxTRACE_COCOA,wxT("runModal END"));
 142         }
 143         else
 144         {
 145             wxLogTrace(wxTRACE_COCOA,wxT("abortModal"));
 146             [wxTheApp->GetNSApplication() abortModal];
 147             wxModalDialogs.DeleteObject(this);
 148         }
 149     }
 150     else
 151         return wxTopLevelWindow::Show(show);
 152     return true;
 153 }
 154
 155 // Replacement for Show(TRUE) for modal dialogs - returns return code
 156 int wxDialog::ShowModal()
 157 {
 158     if(!IsModal())
 159         SetModal(true);
 160     Show(true);
 161     return GetReturnCode();
 162 }
 163
 164 // EndModal will work for any dialog
 165 void wxDialog::EndModal(int retCode)
 166 {
 167     SetReturnCode(retCode);
 168     Show(false);
 169 }
 170
 171 bool wxDialog::IsModal() const
 172 {
 173     return (GetWindowStyleFlag() & wxDIALOG_MODAL);
 174 }
 175
 176 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 177 {
 178     // We'll send a Cancel message by default,
 179     // which may close the dialog.
 180     // Check for looping if the Cancel event handler calls Close().
 181
 182     // Note that if a cancel button and handler aren't present in the dialog,
 183     // nothing will happen when you close the dialog via the window manager, or
 184     // via Close().
 185     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 186     // created on the stack.
 187     // However, this does mean that calling dialog->Close() won't delete the dialog
 188     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 189     // sure to destroy the dialog.
 190     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 191     // ALWAYS VETO THIS EVENT!!!!
 192     event.Veto();
 193
 194     static wxList closing;
 195
 196     if ( closing.Member(this) )
 197     {
 198         wxLogDebug(wxT("WARNING: Attempting to recursively call Close for dialog"));
 199         return;
 200     }
 201
 202     closing.Append(this);
 203
 204     wxLogTrace(wxTRACE_COCOA,wxT("Sending Cancel Event"));
 205     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 206     cancelEvent.SetEventObject( this );
 207     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 208
 209     closing.DeleteObject(this);
 210 }
 211
 212 // Standard buttons
 213 void wxDialog::OnOK(wxCommandEvent& event)
 214 {
 215     if ( Validate() && TransferDataFromWindow() )
 216     {
 217         EndModal(wxID_OK);
 218     }
 219 }
 220
 221 void wxDialog::OnApply(wxCommandEvent& event)
 222 {
 223         if (Validate())
 224                 TransferDataFromWindow();
 225         // TODO probably need to disable the Apply button until things change again
 226 }
 227
 228 void wxDialog::OnCancel(wxCommandEvent& event)
 229 {
 230     wxLogTrace(wxTRACE_COCOA,wxT("Cancelled!"));
 231     EndModal(wxID_CANCEL);
 232 }
 233