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