C++ BContainerWindow::Unlock方法代码示例

bool
TTracker::QuitRequested()
{
	// don't allow user quitting
	if (CurrentMessage() && CurrentMessage()->FindBool("shortcut")) {
		// but allow quitting to hide fSettingsWindow
		int32 index = 0;
		BWindow *window = NULL;
		while ((window = WindowAt(index++)) != NULL) {
			if (window == fSettingsWindow) {
				if (fSettingsWindow->Lock()) {
					if (!fSettingsWindow->IsHidden()
						&& fSettingsWindow->IsActive())
						fSettingsWindow->Hide();
					fSettingsWindow->Unlock();
				}
				break;
			}
		}
		return false;
	}

	gStatusWindow->AttemptToQuit();
		// try quitting the copy/move/empty trash threads

	BMessage message;
	AutoLock<WindowList> lock(&fWindowList);
	// save open windows in a message inside an attribute of the desktop
	int32 count = fWindowList.CountItems();
	for (int32 i = 0; i < count; i++) {
		BContainerWindow *window = dynamic_cast<BContainerWindow *>
			(fWindowList.ItemAt(i));

		if (window && window->Lock()) {
			if (window->TargetModel()
				&& !window->PoseView()->IsDesktopWindow()) {
				if (window->TargetModel()->IsRoot())
					message.AddBool("open_disks_window", true);
				else {
					BEntry entry;
					BPath path;
					const entry_ref *ref = window->TargetModel()->EntryRef();
					if (entry.SetTo(ref) == B_OK && entry.GetPath(&path) == B_OK) {
						int8 flags = window->IsMinimized() ? kOpenWindowMinimized : kOpenWindowNoFlags;
						uint32 deviceFlags = GetVolumeFlags(window->TargetModel());

						// save state for every window which is
						//	a) already open on another workspace
						//	b) on a volume not capable of writing attributes
						if (window != FindContainerWindow(ref)
							|| (deviceFlags & (B_FS_HAS_ATTR | B_FS_IS_READONLY)) != B_FS_HAS_ATTR) {
							BMessage stateMessage;
							window->SaveState(stateMessage);
							window->SetSaveStateEnabled(false);
								// This is to prevent its state to be saved to the node when closed.
							message.AddMessage("window state", &stateMessage);
							flags |= kOpenWindowHasState;
						}
						const char *target;
						bool pathAlreadyExists = false;
						for (int32 index = 0;message.FindString("paths", index, &target) == B_OK;index++) {
							if (!strcmp(target,path.Path())) {
								pathAlreadyExists = true;
								break;
							}
						}
						if (!pathAlreadyExists)
							message.AddString("paths", path.Path());
						message.AddInt8(path.Path(), flags);
					}
				}
			}
			window->Unlock();
		}
	}
	lock.Unlock();

	// write windows to open on disk
	BDirectory deskDir;
	if (!BootedInSafeMode() && FSGetDeskDir(&deskDir) == B_OK) {
		// if message is empty, delete the corresponding attribute
		if (message.CountNames(B_ANY_TYPE)) {
			size_t size = (size_t)message.FlattenedSize();
			char *buffer = new char[size];
			message.Flatten(buffer, (ssize_t)size);
			deskDir.WriteAttr(kAttrOpenWindows, B_MESSAGE_TYPE, 0, buffer, size);
			delete [] buffer;
		} else
			deskDir.RemoveAttr(kAttrOpenWindows);
	}

	for (int32 count = 0; count < 50; count++) {
		// wait 5 seconds for the copiing/moving to quit
		if (gStatusWindow->AttemptToQuit())
			break;

		snooze(100000);
	}

	return _inherited::QuitRequested();
//.........这里部分代码省略.........