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     wxLogDebug("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     wxLogDebug("Destroying");
  88     // setReleasedWhenClosed: NO
  89     [m_cocoaNSWindow close];
  90     DisassociateNSPanel(GetNSPanel());
  91 }
  92
  93 void wxDialog::Cocoa_close(void)
  94 {
  95     m_closed = true;
  96     /* Actually, this isn't true anymore */
  97     wxLogDebug("Woah: Dialogs are not generally closed");
  98 }
  99
 100 void wxDialog::SetModal(bool flag)
 101 {
 102     if ( flag )
 103     {
 104         wxModelessWindows.DeleteObject(this);
 105         m_windowStyle |= wxDIALOG_MODAL ;
 106     }
 107     else
 108     {
 109         m_windowStyle &= ~wxDIALOG_MODAL ;
 110         wxModelessWindows.Append(this);
 111     }
 112 }
 113
 114 bool wxDialog::Show(bool show)
 115 {
 116     if(m_isShown == show)
 117         return false;
 118     if(show)
 119         InitDialog();
 120     if(IsModal())
 121     {
 122         m_isShown = show;
 123         if(show)
 124         {
 125             wxAutoNSAutoreleasePool pool;
 126             wxModalDialogs.Append(this);
 127             wxLogDebug("runModal");
 128             NSApplication *theNSApp = wxTheApp->GetNSApplication();
 129             // If the app hasn't started, flush the event queue
 130             // If we don't do this, the Dock doesn't get the message that
 131             // the app has started so will refuse to activate it.
 132             if(![theNSApp isRunning])
 133             {
 134                 while(NSEvent *event = [theNSApp
 135                             nextEventMatchingMask:NSAnyEventMask
 136                             untilDate:[NSDate distantPast]
 137                             inMode:NSDefaultRunLoopMode
 138                             dequeue: YES])
 139                 {
 140                     [theNSApp sendEvent: event];
 141                 }
 142             }
 143             [wxTheApp->GetNSApplication() runModalForWindow:m_cocoaNSWindow];
 144             wxLogDebug("runModal END");
 145         }
 146         else
 147         {
 148             wxLogDebug("abortModal");
 149             [wxTheApp->GetNSApplication() abortModal];
 150             wxModalDialogs.DeleteObject(this);
 151         }
 152     }
 153     else
 154         return wxTopLevelWindow::Show(show);
 155     return true;
 156 }
 157
 158 // Replacement for Show(TRUE) for modal dialogs - returns return code
 159 int wxDialog::ShowModal()
 160 {
 161     if(!IsModal())
 162         SetModal(true);
 163     Show(true);
 164     return GetReturnCode();
 165 }
 166
 167 // EndModal will work for any dialog
 168 void wxDialog::EndModal(int retCode)
 169 {
 170     SetReturnCode(retCode);
 171     Show(false);
 172 }
 173
 174 bool wxDialog::IsModal() const
 175 {
 176     return (GetWindowStyleFlag() & wxDIALOG_MODAL);
 177 }
 178
 179 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 180 {
 181     // We'll send a Cancel message by default,
 182     // which may close the dialog.
 183     // Check for looping if the Cancel event handler calls Close().
 184
 185     // Note that if a cancel button and handler aren't present in the dialog,
 186     // nothing will happen when you close the dialog via the window manager, or
 187     // via Close().
 188     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 189     // created on the stack.
 190     // However, this does mean that calling dialog->Close() won't delete the dialog
 191     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 192     // sure to destroy the dialog.
 193     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 194     // ALWAYS VETO THIS EVENT!!!!
 195     event.Veto();
 196
 197     static wxList closing;
 198
 199     if ( closing.Member(this) )
 200     {
 201         wxLogDebug("WARNING: Attempting to recursively call Close for dialog");
 202         return;
 203     }
 204
 205     closing.Append(this);
 206
 207     wxLogDebug("Sending Cancel Event");
 208     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 209     cancelEvent.SetEventObject( this );
 210     GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
 211
 212     closing.DeleteObject(this);
 213 }
 214
 215 // Standard buttons
 216 void wxDialog::OnOK(wxCommandEvent& event)
 217 {
 218     if ( Validate() && TransferDataFromWindow() )
 219     {
 220         EndModal(wxID_OK);
 221     }
 222 }
 223
 224 void wxDialog::OnApply(wxCommandEvent& event)
 225 {
 226         if (Validate())
 227                 TransferDataFromWindow();
 228         // TODO probably need to disable the Apply button until things change again
 229 }
 230
 231 void wxDialog::OnCancel(wxCommandEvent& event)
 232 {
 233     wxLogDebug("Cancelled!");
 234     EndModal(wxID_CANCEL);
 235 }
 236