src/cocoa/mdi.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/mdi.mm
   3 // Purpose:     wxMDIParentFrame, wxMDIChildFrame, wxMDIClientWindow
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2003/09/08
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_MDI
  15
  16 #include "wx/mdi.h"
  17
  18 #include "wx/cocoa/objc/objc_uniquifying.h"
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/log.h"
  22 #endif // WX_PRECOMP
  23
  24 // #include "wx/cocoa/autorelease.h"
  25 #include "wx/cocoa/mbarman.h"
  26
  27 #import <AppKit/NSWindow.h>
  28 #import <Foundation/NSNotification.h>
  29 // #import <AppKit/NSApplication.h>
  30 // #import <AppKit/NSView.h>
  31
  32 #include "wx/listimpl.cpp"
  33 WX_DEFINE_LIST(wxCocoaMDIChildFrameList);
  34
  35 WX_DECLARE_HASH_MAP(int, wxMDIChildFrame*, wxIntegerHash, wxIntegerEqual, wxIntMDIChildFrameHashMap);
  36
  37 // ============================================================================
  38 // wxMDIParentFrameObserver
  39 // ============================================================================
  40 @interface wxMDIParentFrameObserver : NSObject
  41 {
  42     wxMDIParentFrame *m_mdiParent;
  43 }
  44
  45 - (id)init;
  46 - (id)initWithWxMDIParentFrame: (wxMDIParentFrame *)mdiParent;
  47 - (void)windowDidBecomeMain: (NSNotification *)notification;
  48 @end // interface wxMDIParentFrameObserver : NSObject
  49 WX_DECLARE_GET_OBJC_CLASS(wxMDIParentFrameObserver,NSObject)
  50
  51 @implementation wxMDIParentFrameObserver : NSObject
  52 - (id)init
  53 {
  54     wxFAIL_MSG(wxT("[wxMDIParentFrameObserver -init] should never be called!"));
  55     m_mdiParent = NULL;
  56     return self;
  57 }
  58
  59 - (id)initWithWxMDIParentFrame: (wxMDIParentFrame *)mdiParent
  60 {
  61     wxASSERT(mdiParent);
  62     m_mdiParent = mdiParent;
  63     return [super init];
  64 }
  65
  66 - (void)windowDidBecomeMain: (NSNotification *)notification
  67 {
  68     wxASSERT(m_mdiParent);
  69     m_mdiParent->WindowDidBecomeMain(notification);
  70 }
  71
  72 @end // implementation wxMDIParentFrameObserver : NSObject
  73 WX_IMPLEMENT_GET_OBJC_CLASS(wxMDIParentFrameObserver,NSObject)
  74
  75 // ========================================================================
  76 // wxMDIParentFrame
  77 // ========================================================================
  78 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame,wxFrame)
  79 BEGIN_EVENT_TABLE(wxMDIParentFrame,wxFrame)
  80 END_EVENT_TABLE()
  81
  82 void wxMDIParentFrame::Init()
  83 {
  84     m_clientWindow = NULL;
  85     m_currentChild = NULL;
  86     m_observer = [[WX_GET_OBJC_CLASS(wxMDIParentFrameObserver) alloc]
  87             initWithWxMDIParentFrame:this];
  88     [[NSNotificationCenter defaultCenter] addObserver:m_observer
  89             selector:@selector(windowDidBecomeMain:)
  90             name:NSWindowDidBecomeMainNotification object:nil];
  91 }
  92
  93 bool wxMDIParentFrame::Create(wxWindow *parent,
  94         wxWindowID winid, const wxString& title,
  95         const wxPoint& pos, const wxSize& size,
  96         long style, const wxString& name)
  97 {
  98     if ( !wxFrame::Create(parent,winid,title,pos,size,style,name) )
  99         return false;
 100
 101     m_clientWindow = OnCreateClient();
 102
 103     return m_clientWindow != NULL;
 104 }
 105
 106 wxMDIParentFrame::~wxMDIParentFrame()
 107 {
 108     for(wxCocoaMDIChildFrameList::compatibility_iterator node =
 109             m_mdiChildren.GetFirst(); node; node = m_mdiChildren.GetFirst())
 110     {
 111         wxMDIChildFrame *child = node->GetData();
 112         // Delete it NOW
 113         delete child;
 114         wxASSERT_MSG(!m_mdiChildren.Find(child),
 115             wxT("MDI child didn't remove itself using RemoveMDIChild()"));
 116     }
 117     [m_observer release];
 118 }
 119
 120 void wxMDIParentFrame::AddMDIChild(wxMDIChildFrame *child)
 121 {
 122     m_mdiChildren.Append(child);
 123 }
 124
 125 void wxMDIParentFrame::RemoveMDIChild(wxMDIChildFrame *child)
 126 {
 127     m_mdiChildren.DeleteObject(child);
 128     if(child==m_currentChild)
 129         SetActiveChild(NULL);
 130 }
 131
 132 void wxMDIParentFrame::SetActiveChild(wxMDIChildFrame *child)
 133 {
 134     m_currentChild = child;
 135     wxMenuBarManager::GetInstance()->UpdateMenuBar();
 136 }
 137
 138 wxMenuBar *wxMDIParentFrame::GetAppMenuBar(wxCocoaNSWindow *win)
 139 {
 140     if(m_currentChild && (win==this))
 141         return m_currentChild->GetAppMenuBar(win);
 142     return wxFrame::GetAppMenuBar(win);
 143 }
 144
 145 void wxMDIParentFrame::CocoaDelegate_windowDidBecomeKey(void)
 146 {
 147     wxLogTrace(wxTRACE_COCOA,wxT("wxMDIParentFrame=%p::CocoaDelegate_windowDidBecomeKey"),this);
 148     if(sm_cocoaDeactivateWindow && sm_cocoaDeactivateWindow==m_currentChild)
 149     {
 150         sm_cocoaDeactivateWindow = NULL;
 151     }
 152     #if 0
 153     else if(sm_cocoaDeactivateWindow == this)
 154     {
 155         sm_cocoaDeactivateWindow = NULL;
 156     }
 157     #endif
 158     else
 159     {
 160         if(m_currentChild)
 161         {
 162             NSWindow *nswin = m_currentChild->GetNSWindow();
 163             if(![nswin isMainWindow])
 164                 [nswin makeMainWindow];
 165         }
 166         wxFrame::CocoaDelegate_windowDidBecomeKey();
 167     }
 168 }
 169
 170 void wxMDIParentFrame::CocoaDelegate_windowDidResignKey(void)
 171 {
 172     wxLogTrace(wxTRACE_COCOA,wxT("wxMDIParentFrame=%p::CocoaDelegate_windowDidResignKey"),this);
 173     if(m_closed)
 174         wxFrame::CocoaDelegate_windowDidResignKey();
 175     else
 176         sm_cocoaDeactivateWindow = this;
 177 }
 178
 179 // We should not become the main window as we aren't a document window
 180 // MDI "Children" should be the main window
 181 bool wxMDIParentFrame::Cocoa_canBecomeMainWindow(bool &canBecome)
 182 {
 183     canBecome = m_mdiChildren.IsEmpty(); return true;
 184 }
 185
 186 void wxMDIParentFrame::WindowDidBecomeMain(NSNotification *notification)
 187 {
 188     // If we aren't the key window, we don't care
 189     if(![m_cocoaNSWindow isKeyWindow])
 190         return;
 191     wxCocoaNSWindow *win = wxCocoaNSWindow::GetFromCocoa([notification object]);
 192     // If we are key and becoming main, that's great
 193     if(win==this)
 194         return;
 195     // If one of our children is becoming main, also great
 196     for(wxCocoaMDIChildFrameList::compatibility_iterator node =
 197             m_mdiChildren.GetFirst(); node; node = node->GetNext())
 198     {
 199         wxMDIChildFrame *child = node->GetData();
 200         if(win==child)
 201             return;
 202     }
 203     // Some other window is becoming main, but we are key
 204     // Make the new main window the key window
 205     [[notification object] makeKeyWindow];
 206     if(!m_currentChild)
 207     {
 208         wxIntMDIChildFrameHashMap hashmap;
 209         for(wxCocoaMDIChildFrameList::compatibility_iterator node =
 210                 m_mdiChildren.GetFirst(); node; node = node->GetNext())
 211         {
 212             wxMDIChildFrame *child = node->GetData();
 213             hashmap.insert(wxIntMDIChildFrameHashMap::value_type([child->m_cocoaNSWindow windowNumber],child));
 214         }
 215         if(!hashmap.empty())
 216         {
 217             NSInteger windowCount = 0;
 218             NSCountWindows(&windowCount);
 219             wxASSERT(windowCount>0);
 220             NSInteger *windowList = new NSInteger[windowCount];
 221             NSWindowList(windowCount, windowList);
 222             wxIntMDIChildFrameHashMap::iterator iter = hashmap.end();
 223             for(int i=0; i<windowCount && iter == hashmap.end(); i++)
 224                 iter=hashmap.find(windowList[i]);
 225             if(iter != hashmap.end())
 226                 m_currentChild = iter->second;
 227         }
 228     }
 229 }
 230
 231 // ========================================================================
 232 // wxMDIChildFrame
 233 // ========================================================================
 234 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame,wxFrame)
 235 BEGIN_EVENT_TABLE(wxMDIChildFrame,wxFrame)
 236 END_EVENT_TABLE()
 237
 238 void wxMDIChildFrame::Init()
 239 {
 240     m_mdiParent = NULL;
 241 }
 242
 243 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 244         wxWindowID winid, const wxString& title,
 245         const wxPoint& pos, const wxSize& size,
 246         long style, const wxString& name)
 247 {
 248     bool success = wxFrame::Create(parent,winid,title,pos,size,style,name);
 249     if(success)
 250     {
 251         m_mdiParent = parent;
 252         parent->AddMDIChild(this);
 253     }
 254     return success;
 255 }
 256
 257 wxMDIChildFrame::~wxMDIChildFrame()
 258 {
 259     // Just in case Destroy() wasn't called
 260     m_mdiParent->RemoveMDIChild(this);
 261 }
 262
 263 void wxMDIChildFrame::Activate()
 264 {
 265 }
 266
 267 void wxMDIChildFrame::CocoaDelegate_windowDidBecomeKey(void)
 268 {
 269     wxLogTrace(wxTRACE_COCOA,wxT("wxMDIChildFrame=%p::CocoaDelegate_windowDidBecomeKey"),this);
 270     if(sm_cocoaDeactivateWindow && sm_cocoaDeactivateWindow==m_mdiParent)
 271     {
 272         sm_cocoaDeactivateWindow = NULL;
 273         if(m_mdiParent->GetActiveChild() != this)
 274             sm_cocoaDeactivateWindow = m_mdiParent->GetActiveChild();
 275     }
 276     m_mdiParent->SetActiveChild(this);
 277     wxFrame::CocoaDelegate_windowDidBecomeKey();
 278 }
 279
 280 void wxMDIChildFrame::CocoaDelegate_windowDidBecomeMain(void)
 281 {
 282     m_mdiParent->SetActiveChild(this);
 283     wxFrame::CocoaDelegate_windowDidBecomeMain();
 284 }
 285
 286 void wxMDIChildFrame::CocoaDelegate_windowDidResignKey(void)
 287 {
 288     wxLogTrace(wxTRACE_COCOA,wxT("wxMDIChildFrame=%p::CocoaDelegate_windowDidResignKey"),this);
 289     sm_cocoaDeactivateWindow = this;
 290 }
 291
 292 bool wxMDIChildFrame::Destroy()
 293 {
 294     // It's good to do this here before we are really closed
 295     m_mdiParent->RemoveMDIChild(this);
 296     return wxFrame::Destroy();
 297 }
 298
 299 // ========================================================================
 300 // wxMDIClientWindow
 301 // ========================================================================
 302 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow,wxWindow)
 303
 304 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
 305 {
 306     return Create(parent, wxID_ANY, wxPoint(0, 0), wxSize(0, 0), style);
 307 }
 308
 309 #endif // wxUSE_MDI