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