Add backend support for the NSWindow child mechanism and use it for

popup buttons.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@27719 72102866-910b-0410-8b05-ffd578937521

Source/GSDisplayServer.m

@@ -896,6 +896,12 @@ GSCurrentServer(void)
   [self subclassResponsibility: _cmd];
 }
 
+- (void) setPartentWindow: (int)partentWin 
+           forChildWindow: (int)childWin
+{
+  [self subclassResponsibility: _cmd];
+}
+
 @end
 
 /* ----------------------------------------------------------------------- */

Source/NSPopUpButtonCell.m

@@ -828,7 +828,10 @@ static NSImage *_pbc_image[5];
       onScreen: [cvWin screen]
       preferredEdge: _pbcFlags.preferredEdge
       popUpSelectedItem: selectedItem];
-  
+
+  // Set to be above the main window
+  [cvWin addChildWindow: [mr window] ordered: NSWindowAbove];
+
   // Last, display the window
   [[mr window] orderFrontRegardless];
 
@@ -844,11 +847,17 @@ static NSImage *_pbc_image[5];
 - (void) dismissPopUp
 {
   NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
+  NSMenuView *mr = [_menu menuRepresentation];
+  NSWindow *mWin;
 
   [nc removeObserver: self
       name: NSMenuDidSendActionNotification
       object: _menu];
   [_menu close];
+
+  // remove from main window
+  mWin = [mr window];
+  [[mWin parentWindow] removeChildWindow: mWin];
 }
 
 /* Private method handles all cases after doing a selection from 

Source/NSWindow.m

@@ -856,6 +856,9 @@ many times.
                     : _styleMask
                     : [_screen screenNumber]];
   [srv setwindowlevel: [self level] : _windowNum];
+  if (_parent != nil)
+    [srv setPartentWindow: [_parent windowNumber] 
+         forChildWindow: _windowNum];
 
   // Set up context
   [self _startBackendWindow];
@@ -4741,8 +4744,13 @@ current key view.<br />
 
 - (void) setParentWindow: (NSWindow *)window
 {
-  // FIXME
   _parent = window;  
+
+  if (_windowNum)
+    {
+      [GSServerForWindow(self) setPartentWindow: [_parent windowNumber] 
+                        forChildWindow: _windowNum];
+    }
 }
 
 - (BOOL) allowsToolTipsWhenApplicationIsInactive