* Allowed Go() to also work if it was not called from within a window - this

prevented ProcessController from showing its menus.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17587 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/PopUpMenu.cpp

@@ -7,6 +7,7 @@
  *		Stefano Ceccherini ([email protected])
  */
 
+
 #include <Application.h>
 #include <Looper.h>
 #include <MenuItem.h>
@@ -14,28 +15,26 @@
 #include <Window.h>
 
 
-struct popup_menu_data 
-{
+struct popup_menu_data {
 	BPopUpMenu *object;
 	BWindow *window;
 	BMenuItem *selected;
-	
+
 	BPoint where;
 	BRect rect;
-	
+
 	bool async;
 	bool autoInvoke;
 	bool startOpened;
 	bool useRect;
-	
+
 	sem_id lock;
 };
 
 
 BPopUpMenu::BPopUpMenu(const char *title, bool radioMode, bool autoRename,
-						menu_layout layout)
-	:
-	BMenu(title, layout),
+		menu_layout layout)
+	: BMenu(title, layout),
 	fUseWhere(false),
 	fAutoDestruct(false),
 	fTrackThread(-1)
@@ -49,8 +48,7 @@ BPopUpMenu::BPopUpMenu(const char *title, bool radioMode, bool autoRename,
 
 
 BPopUpMenu::BPopUpMenu(BMessage *archive)
-	:
-	BMenu(archive),
+	: BMenu(archive),
 	fUseWhere(false),
 	fAutoDestruct(false),
 	fTrackThread(-1)
@@ -86,9 +84,9 @@ BPopUpMenu::Instantiate(BMessage *data)
 
 
 BMenuItem *
-BPopUpMenu::Go(BPoint where, bool delivers_message, bool open_anyway, bool async)
+BPopUpMenu::Go(BPoint where, bool deliversMessage, bool openAnyway, bool async)
 {
-	return _go(where, delivers_message, open_anyway, NULL, async);
+	return _go(where, deliversMessage, openAnyway, NULL, async);
 }
 
 
@@ -232,7 +230,7 @@ BPopUpMenu::ScreenLocation()
 {
 	if (fUseWhere)
 		return fWhere;
-	
+
 	BMenuItem *superItem = Superitem();
 	BMenu *superMenu = Supermenu();
 	BMenuItem *selectedItem = FindItem(superItem->Label());
@@ -247,8 +245,7 @@ BPopUpMenu::ScreenLocation()
 }
 
 
-//	#pragma mark -
-//	private methods
+//	#pragma mark - private methods
 
 
 void BPopUpMenu::_ReservedPopUpMenu1() {}
@@ -276,25 +273,22 @@ BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
 	}
 
 	BMenuItem *selected = NULL;
-	
+
 	// Can't use Window(), as the BPopUpMenu isn't attached
 	BLooper *looper = BLooper::LooperForThread(find_thread(NULL));
 	BWindow *window = dynamic_cast<BWindow *>(looper);
-	
-	if (window == NULL)
-		return NULL;
-	
+
 	popup_menu_data *data = new popup_menu_data;
 	sem_id sem = create_sem(0, "window close lock");
-	
+
 	data->window = window;
 
 	// Asynchronous menu: we set the BWindow menu's semaphore
 	// and let BWindow block when needed
-	if (async) {
+	if (async && window != NULL) {
 		_set_menu_sem_(window, sem);
 	} 
-	
+
 	data->object = this;
 	data->autoInvoke = autoInvoke;
 	data->useRect = _specialRect != NULL;
@@ -305,16 +299,16 @@ BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
 	data->startOpened = startOpened;
 	data->selected = selected;
 	data->lock = sem;
-	
+
 	// Spawn the tracking thread
 	fTrackThread = spawn_thread(entry, "popup", B_NORMAL_PRIORITY, data); 
-	
+
 	if (fTrackThread >= 0)
 		resume_thread(fTrackThread);
 	else {
 		// Something went wrong. Cleanup and return NULL
 		delete_sem(sem);
-		if (async)
+		if (async && window != NULL)
 			_set_menu_sem_(window, B_BAD_SEM_ID);
 		delete data;
 		return NULL;
@@ -327,21 +321,19 @@ BPopUpMenu::_go(BPoint where, bool autoInvoke, bool startOpened,
 			// TODO: usually it's not a good idea to check for a particular error
 			// code. Though here we just want to wait till the semaphore is deleted
 			// (it will return B_BAD_SEM_ID in that case), not provide locking or whatever.
-			while (acquire_sem_etc(sem, 1, B_TIMEOUT, 50000) != B_BAD_SEM_ID)
+			while (acquire_sem_etc(sem, 1, B_TIMEOUT, 50000) != B_BAD_SEM_ID) {
 				window->UpdateIfNeeded();
-
+			}
 		}
-		
+
 		status_t unused;
 		while (wait_for_thread(fTrackThread, &unused) == B_INTERRUPTED)
 			;
-		
-		selected = data->selected;
-		
-		delete data;
 
+		selected = data->selected;
+		delete data;
 	}
-		
+
 	return selected;
 }
 
@@ -355,53 +347,52 @@ BPopUpMenu::entry(void *arg)
 	BRect *rect = NULL;
 	bool autoInvoke = data->autoInvoke;
 	bool startOpened = data->startOpened;
-		
+
 	if (data->useRect)
 		rect = &data->rect;
-	
+
 	data->selected = menu->start_track(where, autoInvoke, startOpened, rect);
-	
+
 	// Reset the window menu semaphore	
 	if (data->async && data->window)
 		_set_menu_sem_(data->window, B_BAD_SEM_ID);
-	
+
 	delete_sem(data->lock);
-	
+
 	// Commit suicide if needed	
 	if (menu->fAutoDestruct)
 		delete menu;	
-			
+
 	if (data->async)
 		delete data;
-		
+
 	return 0;
 }
 
 
 BMenuItem *
 BPopUpMenu::start_track(BPoint where, bool autoInvoke,
-		bool startOpened, BRect *_specialRect)
+	bool startOpened, BRect *_specialRect)
 {
 	fWhere = where;
-	
+
 	// I know, this doesn't look senseful, but don't be fooled,
 	// fUseWhere is used in ScreenLocation(), which is a virtual
 	// called by BMenu::Track()
 	fUseWhere = true;
-	
+
 	// Show the menu's window
 	Show();
-	
+
 	// Wait some time then track the menu
 	snooze(50000);
 	BMenuItem *result = Track(startOpened, _specialRect);
 	if (result != NULL && autoInvoke)
 		result->Invoke();
-	
+
 	fUseWhere = false;
-	
+
 	Hide();
-	
 	be_app->ShowCursor();
 
 	fTrackThread = -1;