* Implemented AS_DIRECT_WINDOW_SET_FULLSCREEN so that it sets kWindowScreenFeel

when enabled, and B_NORMAL_WINDOW_FEEL when disabled. IOW when enabled, no
  other windows can interfere.
* Therefore, it's no longer necessary to have the screen_blanker window
  use kWindowScreenFeel - it will set its window to full screen as long
  as the blanker runs.
* Added a AS_APP_CRASHED notification in the app_server that will remove
  all kWindowScreenFeels from the windows of the crashed app.
* This is now used by the debugger to ensure that the debugger alert will
  be visible.
* Factored out a DesktopLink class out of the BRoster::_ActivateApp()
  method. This class is now also used in the new BRoster::_ApplicationCrashed()
  method as used in the debug_server (via BRoster::Private).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17785 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/app/DesktopLink.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2006, Haiku.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Axel Dörfler, [email protected]
+ */
+#ifndef _DESKTOP_LINK_H
+#define _DESKTOP_LINK_H
+
+
+#include <PortLink.h>
+
+
+namespace BPrivate {
+
+class DesktopLink : public PortLink {
+	public:
+		DesktopLink();
+		virtual ~DesktopLink();
+
+		status_t InitCheck() const;
+
+	private:
+		port_id	fReplyPort;
+};
+
+}	// namespace BPrivate
+
+#endif	/* _DESKTOP_LINK_H */

headers/private/app/RosterPrivate.h

@@ -70,6 +70,10 @@ class BRoster::Private {
 		void SaveRecentLists(const char *file) const
 			{ fRoster->_SaveRecentLists(file); }
 
+		// needed by the debug server
+		void ApplicationCrashed(team_id team) const
+			{ fRoster->_ApplicationCrashed(team); }
+
 		static void InitBeRoster();
 		static void DeleteBeRoster();
 

headers/private/app/ServerProtocol.h

@@ -44,8 +44,7 @@ enum {
 	AS_DELETE_APP,
 	AS_QUIT_APP,
 	AS_ACTIVATE_APP,
-
-	AS_SET_SERVER_PORT,
+	AS_APP_CRASHED,
 
 	AS_CREATE_WINDOW,
 	AS_CREATE_OFFSCREEN_WINDOW,

src/bin/screen_blanker/ScreenSaverWindow.cpp

@@ -22,7 +22,7 @@
 */
 ScreenSaverWindow::ScreenSaverWindow(BRect frame)
 	: BDirectWindow(frame, "ScreenSaver Window",
-		B_NO_BORDER_WINDOW_LOOK, kWindowScreenFeel, B_NOT_RESIZABLE | B_NOT_ZOOMABLE),
+		B_NO_BORDER_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL, B_NOT_RESIZABLE | B_NOT_ZOOMABLE),
 	fSaver(NULL)
 {
 	frame.OffsetTo(0, 0);

src/kits/app/DesktopLink.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2006, Haiku Inc.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Axel Dörfler, [email protected]
+ */
+
+
+#include <DesktopLink.h>
+#include <ServerProtocol.h>
+
+
+namespace BPrivate {
+
+DesktopLink::DesktopLink()
+	:
+	fReplyPort(B_ERROR)
+{
+	// get the app server port
+	port_id port = find_port(SERVER_PORT_NAME);
+	if (port < B_OK)
+		return;
+
+	// create a reply port
+	fReplyPort = create_port(1, "desktop reply");
+	if (fReplyPort < B_OK)
+		return;
+
+	SetTo(port, fReplyPort);
+
+	// We can't use AppServerLink because be_app may be NULL
+	StartMessage(AS_GET_DESKTOP);
+	Attach<port_id>(fReplyPort);
+	Attach<int32>(getuid());
+
+	int32 code;
+	if (FlushWithReply(code) != B_OK || code != B_OK)
+		return;
+
+	// we now talk to the desktop
+	Read<port_id>(&port);
+	SetSenderPort(port);
+}
+
+
+DesktopLink::~DesktopLink()
+{
+	delete_port(fReplyPort);
+}
+
+
+status_t
+DesktopLink::InitCheck() const
+{
+	return fReplyPort < B_OK ? fReplyPort : B_OK;
+}
+
+}	// namespace BPrivate

src/kits/app/Jamfile

@@ -31,6 +31,7 @@ MergeObject <libbe>app_kit.o :
 	Cursor.cpp
 	Clipboard.cpp
 	dano_message.cpp
+	DesktopLink.cpp
 	Handler.cpp
 	InitTerminateLibBe.cpp
 	Invoker.cpp

src/kits/app/Roster.cpp

@@ -14,7 +14,6 @@
 
 #include <AppFileInfo.h>
 #include <Application.h>
-#include <AppMisc.h>
 #include <Directory.h>
 #include <File.h>
 #include <FindDirectory.h>
@@ -22,21 +21,24 @@
 #include <fs_info.h>
 #include <image.h>
 #include <List.h>
-#include <MessengerPrivate.h>
 #include <Mime.h>
 #include <Node.h>
 #include <NodeInfo.h>
 #include <OS.h>
 #include <Path.h>
-#include <PortLink.h>
 #include <Query.h>
 #include <RegistrarDefs.h>
 #include <Roster.h>
-#include <RosterPrivate.h>
-#include <ServerProtocol.h>
 #include <Volume.h>
 #include <VolumeRoster.h>
 
+#include <AppMisc.h>
+#include <DesktopLink.h>
+#include <MessengerPrivate.h>
+#include <PortLink.h>
+#include <RosterPrivate.h>
+#include <ServerProtocol.h>
+
 #include <ctype.h>
 #include <new>
 #include <stdio.h>
@@ -770,52 +772,18 @@ BRoster::StopWatching(BMessenger target) const
 status_t
 BRoster::ActivateApp(team_id team) const
 {
-	// get the app server port
-	port_id port = find_port(SERVER_PORT_NAME);
-	if (port < B_OK)
-		return port;
+	BPrivate::DesktopLink link;
 
-	// create a reply port
-	struct ReplyPort {
-		ReplyPort()
-			: port(create_port(1, "activate app reply"))
-		{
-		}
-
-		~ReplyPort()
-		{
-			if (port >= 0)
-				delete_port(port);
-		}
-
-		port_id port;
-
-	} replyPort;
-
-	if (replyPort.port < 0)
-		return replyPort.port;
-
-	BPrivate::PortLink link(port, replyPort.port);
-
-	// We can't use AppServerLink because be_app may be NULL
-	link.StartMessage(AS_GET_DESKTOP);
-	link.Attach<port_id>(replyPort.port);
-	link.Attach<int32>(getuid());
-
-	int32 code;
-	if (link.FlushWithReply(code) != B_OK || code != B_OK)
-		return B_ERROR;
-
-	// we now talk to the desktop
-	link.Read<port_id>(&port);
-	link.SetSenderPort(port);
+	status_t status = link.InitCheck();
+	if (status < B_OK)
+		return status;
 
 	// prepare the message
 	status_t error = link.StartMessage(AS_ACTIVATE_APP);
 	if (error != B_OK)
 		return error;
 
-	error = link.Attach(replyPort.port);
+	error = link.Attach(link.ReceiverPort());
 	if (error != B_OK)
 		return error;
 
@@ -824,6 +792,7 @@ BRoster::ActivateApp(team_id team) const
 		return error;
 
 	// send it
+	status_t code;
 	error = link.FlushWithReply(code);
 	if (error != B_OK)
 		return error;
@@ -1724,6 +1693,20 @@ BRoster::_RemoveApp(team_id team) const
 	return error;
 }
 
+
+void
+BRoster::_ApplicationCrashed(team_id team)
+{
+	BPrivate::DesktopLink link;
+	if (link.InitCheck() != B_OK)
+		return;
+
+	if (link.StartMessage(AS_APP_CRASHED) == B_OK
+		&& link.Attach(team) == B_OK)
+		link.Flush();
+}
+
+
 // _LaunchApp
 /*!	\brief Launches the application associated with the supplied MIME type or
 		   the entry referred to by the supplied entry_ref.

src/servers/app/Desktop.cpp

@@ -542,6 +542,23 @@ Desktop::_DispatchMessage(int32 code, BPrivate::LinkReceiver &link)
 			break;
 		}
 
+		case AS_APP_CRASHED:
+		{
+			BAutolock locker(fApplicationsLock);
+
+			team_id team;
+			if (link.Read(&team) != B_OK)
+				break;
+
+			for (int32 i = 0; i < fApplications.CountItems(); i++) {
+				ServerApp* app = fApplications.ItemAt(i);
+
+				if (app->ClientTeam() == team)
+					app->PostMessage(AS_APP_CRASHED);
+			}
+			break;
+		}
+
 		case B_QUIT_REQUESTED:
 			// We've been asked to quit, so (for now) broadcast to all
 			// test apps to quit. This situation will occur only when the server

src/servers/app/ServerApp.cpp

@@ -51,6 +51,7 @@
 #include <FontPrivate.h>
 #include <MessengerPrivate.h>
 #include <ServerProtocol.h>
+#include <WindowPrivate.h>
 
 #include <stdio.h>
 #include <string.h>
@@ -432,6 +433,22 @@ ServerApp::_DispatchMessage(int32 code, BPrivate::LinkReceiver& link)
 			break;
 		}
 
+		case AS_APP_CRASHED:
+			// Allow the debugger to show its window: if needed, remove any
+			// kWindowScreenFeels from the windows of this application
+			if (fWindowListLock.Lock()) {
+				for (int32 i = fWindowList.CountItems(); i-- > 0;) {
+					ServerWindow* serverWindow = fWindowList.ItemAt(i);
+					WindowLayer* window = serverWindow->Window();
+
+					if (window->Feel() == kWindowScreenFeel)
+						fDesktop->SetWindowFeel(window, B_NORMAL_WINDOW_FEEL);
+				}
+
+				fWindowListLock.Unlock();
+			}
+			break;
+
 		case AS_CREATE_WINDOW:
 		case AS_CREATE_OFFSCREEN_WINDOW:
 		{

src/servers/app/ServerWindow.cpp

@@ -1011,12 +1011,21 @@ fDesktop->LockSingleWindow();
 		}
 		case AS_DIRECT_WINDOW_SET_FULLSCREEN:
 		{
+			// TODO: maybe there is more to do than this?
 			bool enable;
 			link.Read<bool>(&enable);
 
-			fLink.StartMessage(B_ERROR);
-			fLink.Flush();
+			status_t status = B_OK;
+			if (!fWindowLayer->IsOffscreenWindow()) {
+				fDesktop->UnlockSingleWindow();
+				fDesktop->SetWindowFeel(fWindowLayer,
+					enable ? kWindowScreenFeel : B_NORMAL_WINDOW_FEEL);
+				fDesktop->LockSingleWindow();
+			} else
+				status = B_BAD_TYPE;
 
+			fLink.StartMessage(status);
+			fLink.Flush();
 			break;
 		}
 

src/servers/debug/DebugServer.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Ingo Weinhold, bonefish@users.sf.net.
+ * Copyright 2005-2006, Ingo Weinhold, bonefish@users.sf.net.
  * Distributed under the terms of the MIT License.
  */
 
@@ -18,6 +18,8 @@
 #include <debug_support.h>
 #include <Entry.h>
 #include <Invoker.h>
+
+#include <RosterPrivate.h>
 #include <Server.h>
 
 #include <util/DoublyLinkedList.h>
@@ -112,6 +114,7 @@ private:
 	void _LookupSymbolAddress(debug_symbol_lookup_context *lookupContext,
 		const void *address, char *buffer, int32 bufferSize);
 	void _PrintStackTrace(thread_id thread);
+	void _NotifyAppServer(team_id team);
 
 	status_t _InitGUI();
 
@@ -567,6 +570,9 @@ TeamDebugHandler::_HandleMessage(DebugMessage *message)
 
 	} else if (USE_GUI && _AreGUIServersAlive() && _InitGUI() == B_OK) {
 		// normal app
+
+		_NotifyAppServer(fTeam);
+
 		char buffer[1024];
 		snprintf(buffer, sizeof(buffer), "The application:\n\n      %s\n\n"
 			"has encountered an error which prevents it from continuing. Haiku "
@@ -694,6 +700,16 @@ TeamDebugHandler::_PrintStackTrace(thread_id thread)
 	}
 }
 
+
+void
+TeamDebugHandler::_NotifyAppServer(team_id team)
+{
+	// This will remove any kWindowScreenFeels of the application, so that
+	// the debugger alert is visible on screen
+	BRoster::Private roster;
+	roster.ApplicationCrashed(team);
+}
+
 // _InitGUI
 status_t
 TeamDebugHandler::_InitGUI()