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
  22 #import <AppKit/NSPanel.h>
  23 #import <AppKit/NSApplication.h>
  24
  25 // Lists to keep track of windows, so we can disable/enable them
  26 // for modal dialogs
  27 static wxWindowList wxModalDialogs;
  28
  29 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  30
  31 BEGIN_EVENT_TABLE(wxDialog, wxDialogBase)
  32   EVT_BUTTON(wxID_OK, wxDialog::OnOK)
  33   EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
  34   EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
  35   EVT_CLOSE(wxDialog::OnCloseWindow)
  36 END_EVENT_TABLE()
  37
  38 WX_IMPLEMENT_COCOA_OWNER(wxDialog,NSPanel,NSWindow,NSWindow)
  39
  40 void wxDialog::Init()
  41 {
  42     SetBackgroundColour(wxSystemSettings::GetSystemColour(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     NSRect cocoaRect = NSMakeRect(300,300,200,200);
  62
  63     unsigned int cocoaStyle = 0;
  64     cocoaStyle |= NSTitledWindowMask;
  65     cocoaStyle |= NSClosableWindowMask;
  66     cocoaStyle |= NSMiniaturizableWindowMask;
  67     cocoaStyle |= NSResizableWindowMask;
  68
  69     m_cocoaNSWindow = NULL;
  70     SetNSPanel([[NSPanel alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
  71     // NOTE: SetNSWindow has retained the Cocoa object for this object.
  72     // Because we do not release on close, the following release matches the
  73     // above alloc and thus the retain count will be 1.
  74     [m_cocoaNSWindow release];
  75     wxLogDebug("wxDialog m_cocoaNSWindow retainCount=%d",[m_cocoaNSWindow retainCount]);
  76
  77     return true;
  78 }
  79
  80 wxDialog::~wxDialog()
  81 {
  82     wxLogDebug("Destroying");
  83     // setReleasedWhenClosed: NO
  84     [m_cocoaNSWindow close];
  85     DisassociateNSPanel(m_cocoaNSWindow);
  86 }
  87
  88 void wxDialog::Cocoa_close(void)
  89 {
  90     m_closed = true;
  91     /* Actually, this isn't true anymore */
  92     wxLogDebug("Woah: Dialogs are not generally closed");
  93 }
  94
  95 void wxDialog::SetModal(bool flag)
  96 {
  97     if ( flag )
  98     {
  99         wxModelessWindows.DeleteObject(this);
 100         m_windowStyle |= wxDIALOG_MODAL ;
 101     }
 102     else
 103     {
 104         m_windowStyle &= ~wxDIALOG_MODAL ;
 105         wxModelessWindows.Append(this);
 106     }
 107 }
 108
 109 bool wxDialog::Show(bool show)
 110 {
 111     if(m_isShown == show)
 112         return false;
 113     if(show)
 114         InitDialog();
 115     if(IsModal())
 116     {
 117         m_isShown = show;
 118         if(show)
 119         {
 120             wxAutoNSAutoreleasePool pool;
 121             wxModalDialogs.Append(this);
 122             wxLogDebug("runModal");
 123             [wxTheApp->GetNSApplication() runModalForWindow:m_cocoaNSWindow];
 124             wxLogDebug("runModal END");
 125         }
 126         else
 127         {
 128             wxLogDebug("abortModal");
 129             [wxTheApp->GetNSApplication() abortModal];
 130             wxModalDialogs.DeleteObject(this);
 131         }
 132     }
 133     else
 134         return wxTopLevelWindow::Show(show);
 135     return true;
 136 }
 137
 138 // Replacement for Show(TRUE) for modal dialogs - returns return code
 139 int wxDialog::ShowModal()
 140 {
 141     if(!IsModal())
 142         SetModal(true);
 143     Show(true);
 144     return GetReturnCode();
 145 }
 146
 147 // EndModal will work for any dialog
 148 void wxDialog::EndModal(int retCode)
 149 {
 150     SetReturnCode(retCode);
 151     Show(false);
 152 }
 153
 154 bool wxDialog::IsModal() const
 155 {
 156     return (GetWindowStyleFlag() & wxDIALOG_MODAL);
 157 }
 158
 159 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 160 {
 161     // We'll send a Cancel message by default,
 162     // which may close the dialog.
 163     // Check for looping if the Cancel event handler calls Close().
 164
 165     // Note that if a cancel button and handler aren't present in the dialog,
 166     // nothing will happen when you close the dialog via the window manager, or
 167     // via Close().
 168     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 169     // created on the stack.
 170     // However, this does mean that calling dialog->Close() won't delete the dialog
 171     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 172     // sure to destroy the dialog.
 173     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 174     // ALWAYS VETO THIS EVENT!!!!
 175     event.Veto();
 176
 177     static wxList closing;
 178
 179     if ( closing.Member(this) )
 180     {
 181         wxLogDebug("WARNING: Attempting to recursively call Close for dialog");
 182         return;
 183     }
 184
 185     closing.Append(this);
 186
 187     wxLogDebug("Sending Cancel Event");
 188     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 189     cancelEvent.SetEventObject( this );
 190     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 191
 192     closing.DeleteObject(this);
 193 }
 194
 195 // Standard buttons
 196 void wxDialog::OnOK(wxCommandEvent& event)
 197 {
 198     if ( Validate() && TransferDataFromWindow() )
 199     {
 200         EndModal(wxID_OK);
 201     }
 202 }
 203
 204 void wxDialog::OnApply(wxCommandEvent& event)
 205 {
 206         if (Validate())
 207                 TransferDataFromWindow();
 208         // TODO probably need to disable the Apply button until things change again
 209 }
 210
 211 void wxDialog::OnCancel(wxCommandEvent& event)
 212 {
 213     wxLogDebug("Cancelled!");
 214     EndModal(wxID_CANCEL);
 215 }
 216