1 files changed, 92 insertions, 2 deletions

diff --git a/indra/llplugin/slplugin/slplugin.cpp b/indra/llplugin/slplugin/slplugin.cpp
index 77240ce546..c18e2375f9 100644
--- a/indra/llplugin/slplugin/slplugin.cpp
+++ b/indra/llplugin/slplugin/slplugin.cpp
@@ -51,7 +51,7 @@
 #endif
 
 /*
-	On Mac OS, since we call WaitNextEvent, this process will show up in the dock unless we set the LSBackgroundOnly flag in the Info.plist.
+	On Mac OS, since we call WaitNextEvent, this process will show up in the dock unless we set the LSBackgroundOnly or LSUIElement flag in the Info.plist.
 
 	Normally non-bundled binaries don't have an info.plist file, but it's possible to embed one in the binary by adding this to the linker flags:
 
@@ -60,7 +60,8 @@
 	which means adding this to the gcc flags:
 
 	-Wl,-sectcreate,__TEXT,__info_plist,/path/to/slplugin_info.plist
-
+	
+	Now that SLPlugin is a bundled app on the Mac, this is no longer necessary (it can just use a regular Info.plist file), but I'm leaving this comment in for posterity.
 */
 
 #if LL_DARWIN || LL_LINUX
@@ -239,6 +240,21 @@ int main(int argc, char **argv)
 	checkExceptionHandler();
 #endif
 
+#if LL_DARWIN
+	// If the plugin opens a new window (such as the Flash plugin's fullscreen player), we may need to bring this plugin process to the foreground.
+	// Use this to track the current frontmost window and bring this process to the front if it changes.
+	WindowRef front_window = NULL;
+	WindowGroupRef layer_group = NULL;
+	int window_hack_state = 0;
+	CreateWindowGroup(kWindowGroupAttrFixedLevel, &layer_group);
+	if(layer_group)
+	{
+		// Start out with a window layer that's way out in front (fixes the problem with the menubar not getting hidden on first switch to fullscreen youtube)
+		SetWindowGroupName(layer_group, CFSTR("SLPlugin Layer"));
+		SetWindowGroupLevel(layer_group, kCGOverlayWindowLevel);		
+	}
+#endif
+
 	while(!plugin->isDone())
 	{
 		timer.reset();
@@ -248,6 +264,80 @@ int main(int argc, char **argv)
 			// Some plugins (webkit at least) will want an event loop.  This qualifies.
 			EventRecord evt;
 			WaitNextEvent(0, &evt, 0, NULL);
+			
+			// Check for a change in this process's frontmost window.
+			if(FrontWindow() != front_window)
+			{
+				ProcessSerialNumber self = { 0, kCurrentProcess };
+				ProcessSerialNumber parent = { 0, kNoProcess };
+				ProcessSerialNumber front = { 0, kNoProcess };
+				Boolean this_is_front_process = false;
+				Boolean parent_is_front_process = false;
+				{
+					// Get this process's parent
+					ProcessInfoRec info;
+					info.processInfoLength = sizeof(ProcessInfoRec);
+					info.processName = NULL;
+					info.processAppSpec = NULL;
+					if(GetProcessInformation( &self, &info ) == noErr)
+					{
+						parent = info.processLauncher;
+					}
+					
+					// and figure out whether this process or its parent are currently frontmost
+					if(GetFrontProcess(&front) == noErr)
+					{
+						(void) SameProcess(&self, &front, &this_is_front_process);
+						(void) SameProcess(&parent, &front, &parent_is_front_process);
+					}
+				}
+								
+				if((FrontWindow() != NULL) && (front_window == NULL))
+				{
+					// Opening the first window
+					
+					if(window_hack_state == 0)
+					{
+						// Next time through the event loop, lower the window group layer
+						window_hack_state = 1;
+					}
+
+					if(layer_group)
+					{
+						SetWindowGroup(FrontWindow(), layer_group);
+					}
+					
+					if(parent_is_front_process)
+					{
+						// Bring this process's windows to the front.
+						(void) SetFrontProcess( &self );
+					}
+
+					ActivateWindow(FrontWindow(), true);					
+				}
+				else if((FrontWindow() == NULL) && (front_window != NULL))
+				{
+					// Closing the last window
+					
+					if(this_is_front_process)
+					{
+						// Try to bring this process's parent to the front
+						(void) SetFrontProcess(&parent);
+					}
+				}
+				else if(window_hack_state == 1)
+				{
+					if(layer_group)
+					{
+						// Set the window group level back to something less extreme
+						SetWindowGroupLevel(layer_group, kCGNormalWindowLevel);
+					}
+					window_hack_state = 2;
+				}
+
+				front_window = FrontWindow();
+
+			}
 		}
 #endif
 		F64 elapsed = timer.getElapsedTimeF64();