X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a9a4f2295344414e2ee4e3ec27fa5292918dff27..60372b0d54379701d62edf5595a7dc25c48330e1:/src/osx/cocoa/evtloop.mm

diff --git a/src/osx/cocoa/evtloop.mm b/src/osx/cocoa/evtloop.mm
index 91df515ef9..3a8568b33d 100644
--- a/src/osx/cocoa/evtloop.mm
+++ b/src/osx/cocoa/evtloop.mm
@@ -107,12 +107,15 @@ wxGUIEventLoop::wxGUIEventLoop()
 {
     m_modalSession = nil;
     m_dummyWindow = nil;
+    m_modalNestedLevel = 0;
+    m_modalWindow = NULL;
 }
 
 wxGUIEventLoop::~wxGUIEventLoop()
 {
     wxASSERT( m_modalSession == nil );
     wxASSERT( m_dummyWindow == nil );
+    wxASSERT( m_modalNestedLevel == 0 );
 }
 
 //-----------------------------------------------------------------------------
@@ -243,9 +246,15 @@ void wxGUIEventLoop::DoRun()
 
 void wxGUIEventLoop::DoStop()
 {
-    [NSApp stop:0];
     // only calling stop: is not enough when called from a runloop-observer,
     // therefore add a dummy event, to make sure the runloop gets another round
+    [NSApp stop:0];
+    WakeUp();
+}
+
+void wxGUIEventLoop::WakeUp()
+{
+    wxMacAutoreleasePool autoreleasepool;
     NSEvent *event = [NSEvent otherEventWithType:NSApplicationDefined 
                                         location:NSMakePoint(0.0, 0.0) 
                                    modifierFlags:0 
@@ -308,6 +317,16 @@ void wxModalEventLoop::DoStop()
 void wxGUIEventLoop::BeginModalSession( wxWindow* modalWindow )
 {
     WXWindow nsnow = nil;
+
+    if ( m_modalNestedLevel > 0 )
+    {
+        wxASSERT_MSG( m_modalWindow == modalWindow, "Nested Modal Sessions must be based on same window");
+        m_modalNestedLevel++;
+        return;
+    }
+    
+    m_modalWindow = modalWindow;
+    m_modalNestedLevel = 1;
     
     if ( modalWindow )
     {
@@ -333,17 +352,24 @@ void wxGUIEventLoop::BeginModalSession( wxWindow* modalWindow )
         m_dummyWindow = nsnow;
     }
     m_modalSession = [NSApp beginModalSessionForWindow:nsnow];
+    wxASSERT_MSG(m_modalSession != NULL, "modal session couldn't be started");
 }
 
 void wxGUIEventLoop::EndModalSession()
 {
     wxASSERT_MSG(m_modalSession != NULL, "no modal session active");
-    [NSApp endModalSession:(NSModalSession)m_modalSession];
-    m_modalSession = nil;
-    if ( m_dummyWindow )
+    
+    wxASSERT_MSG(m_modalNestedLevel > 0, "incorrect modal nesting level");
+    
+    if ( --m_modalNestedLevel == 0 )
     {
-        [m_dummyWindow release];
-        m_dummyWindow = nil;
+        [NSApp endModalSession:(NSModalSession)m_modalSession];
+        m_modalSession = nil;
+        if ( m_dummyWindow )
+        {
+            [m_dummyWindow release];
+            m_dummyWindow = nil;
+        }
     }
 }
 
@@ -395,7 +421,8 @@ void wxWindowDisabler::DoDisable(wxWindow *winToSkip)
     }
     
     m_modalEventLoop = (wxEventLoop*)wxEventLoopBase::GetActive();
-    m_modalEventLoop->BeginModalSession(winToSkip);
+    if (m_modalEventLoop)
+        m_modalEventLoop->BeginModalSession(winToSkip);
 }
 
 wxWindowDisabler::~wxWindowDisabler()
@@ -403,7 +430,8 @@ wxWindowDisabler::~wxWindowDisabler()
     if ( !m_disabled )
         return;
     
-    m_modalEventLoop->EndModalSession();
+    if (m_modalEventLoop)
+        m_modalEventLoop->EndModalSession();
     
     wxWindowList::compatibility_iterator node;
     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )