SoftwareUpdater: fix crash on exit.

Don't delete or Quit() a BWindow, it can do so by itself. Also, do not
rebuild a BMessenger everytime we want to message a window, that defeats
the purpose. There are still places where the UpdateManager calls
functions from the window object directly however, ignoring the fact
that the window may have been closed.

Fixes #13653.

Change-Id: I868e94a07d9617f343332ea00d35ffd92e60ed8e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2552
Reviewed-by: waddlesplash <[email protected]>

src/apps/softwareupdater/UpdateManager.cpp

@@ -45,26 +45,20 @@ UpdateManager::UpdateManager(BPackageInstallationLocation location,
 	BPackageManager(location, &fClientInstallationInterface, this),
 	BPackageManager::UserInteractionHandler(),
 	fClientInstallationInterface(),
-	fStatusWindow(NULL),
+	fStatusWindow(new SoftwareUpdaterWindow()),
+	fStatusWindowMessenger(fStatusWindow),
+	fProblemWindow(NULL),
+	fProblemWindowMessenger(),
 	fCurrentStep(ACTION_STEP_INIT),
 	fChangesConfirmed(false),
 	fVerbose(verbose)
 {
-	fStatusWindow = new SoftwareUpdaterWindow();
 	_SetCurrentStep(ACTION_STEP_START);
 }
 
 
 UpdateManager::~UpdateManager()
 {
-	if (fStatusWindow != NULL) {
-		fStatusWindow->Lock();
-		fStatusWindow->Quit();
-	}
-	if (fProblemWindow != NULL) {
-		fProblemWindow->Lock();
-		fProblemWindow->Quit();
-	}
 }
 
 
@@ -92,11 +86,10 @@ update_type
 UpdateManager::GetUpdateType()
 {
 	int32 action = USER_SELECTION_NEEDED;
-	BMessenger messenger(fStatusWindow);
+	if (fStatusWindowMessenger.IsValid()) {
-	if (messenger.IsValid()) {
 		BMessage message(kMsgGetUpdateType);
 		BMessage reply;
-		messenger.SendMessage(&message, &reply);
+		fStatusWindowMessenger.SendMessage(&message, &reply);
 		reply.FindInt32(kKeyAlertResult, &action);
 	}
 	return (update_type)action;
@@ -110,11 +103,10 @@ UpdateManager::CheckRepositories()
 	if (fVerbose)
 		printf("Remote repositories available: %" B_PRId32 "\n", count);
 	if (count == 0) {
-		BMessenger messenger(fStatusWindow);
+		if (fStatusWindowMessenger.IsValid()) {
-		if (messenger.IsValid()) {
 			BMessage message(kMsgNoRepositories);
 			BMessage reply;
-			messenger.SendMessage(&message, &reply);
+			fStatusWindowMessenger.SendMessage(&message, &reply);
 			int32 result;
 			reply.FindInt32(kKeyAlertResult, &result);
 			if (result == 1)
@@ -159,8 +151,10 @@ UpdateManager::FinalUpdate(const char* header, const char* text)
 void
 UpdateManager::HandleProblems()
 {
-	if (fProblemWindow == NULL)
+	if (fProblemWindow == NULL) {
 		fProblemWindow = new ProblemWindow;
+		fProblemWindowMessenger.SetTo(fProblemWindow);
+	}
 
 	ProblemWindow::SolverPackageSet installPackages;
 	ProblemWindow::SolverPackageSet uninstallPackages;

src/apps/softwareupdater/UpdateManager.h

@@ -88,7 +88,9 @@ private:
 									fClientInstallationInterface;
 
 			SoftwareUpdaterWindow*	fStatusWindow;
+			BMessenger				fStatusWindowMessenger;
 			ProblemWindow*			fProblemWindow;
+			BMessenger				fProblemWindowMessenger;
 			uint32					fCurrentStep;
 			bool					fChangesConfirmed;
 			bool					fNewDownloadStarted;