C++ BContainerWindow::TargetModel方法代码示例

BNavMenu::BNavMenu(const char *title, uint32 message, const BMessenger &messenger,
	BWindow *parentWindow, const BObjectList<BString> *list)
	:	BSlowMenu(title),
		fMessage(message),
		fMessenger(messenger),
		fParentWindow(parentWindow),
		fFlags(0),
		fItemList(0),
		fContainer(0),
		fTypesList(list)
{
	InitIconPreloader();

	SetFont(be_plain_font);

	// add the parent window to the invocation message so that it
	// can be closed if option modifier held down during invocation
	BContainerWindow *originatingWindow = dynamic_cast<BContainerWindow *>(fParentWindow);
	if (originatingWindow)
		fMessage.AddData("nodeRefsToClose", B_RAW_TYPE,
			originatingWindow->TargetModel()->NodeRef(), sizeof (node_ref));

	// too long to have triggers
	SetTriggersEnabled(false);
}

void
BDirMenu::AddItemToDirMenu(const BEntry* entry, BWindow* originatingWindow,
	bool atEnd, bool addShortcuts, bool navMenuEntries)
{
	Model model(entry);
	if (model.InitCheck() != B_OK)
		return;

	BMessage* message = new BMessage(fCommand);
	message->AddRef(fEntryName.String(), model.EntryRef());

	// add reference to the container windows model so that we can
	// close the window if
	BContainerWindow* window = originatingWindow ?
		dynamic_cast<BContainerWindow*>(originatingWindow) : 0;
	if (window)
		message->AddData("nodeRefsToClose", B_RAW_TYPE,
			window->TargetModel()->NodeRef(), sizeof (node_ref));
	ModelMenuItem* item;
	if (navMenuEntries) {
		BNavMenu* subMenu = new BNavMenu(model.Name(), B_REFS_RECEIVED,
			fTarget, window);
		entry_ref ref;
		entry->GetRef(&ref);
		subMenu->SetNavDir(&ref);
		item = new ModelMenuItem(&model, subMenu);
		item->SetLabel(model.Name());
		item->SetMessage(message);
	} else {
		item = new ModelMenuItem(&model, model.Name(), message);
	}

	if (addShortcuts) {
		if (model.IsDesktop())
			item->SetShortcut('D', B_COMMAND_KEY);
		else if (FSIsHomeDir(entry))
			item->SetShortcut('H', B_COMMAND_KEY);
	}

	if (atEnd)
		AddItem(item);
	else
		AddItem(item, 0);

	item->SetTarget(fTarget);

	if (fMenuBar) {
		ModelMenuItem* menu
			= dynamic_cast<ModelMenuItem*>(fMenuBar->ItemAt(0));
		if (menu) {
			ThrowOnError(menu->SetEntry(entry));
			item->SetMarked(true);
		}
	}
}

void
TTracker::CloseWindowAndChildren(const node_ref *node)
{
	BDirectory dir(node);
	if (dir.InitCheck() != B_OK)
		return;

	AutoLock<WindowList> lock(&fWindowList);
	BObjectList<BContainerWindow> closeList;

	// make a list of all windows to be closed
	// count from end to beginning so we can remove items safely
	for (int32 index = fWindowList.CountItems() - 1; index >= 0; index--) {
		BContainerWindow *window = dynamic_cast<BContainerWindow *>
			(fWindowList.ItemAt(index));
		if (window && window->TargetModel()) {
			BEntry wind_entry;
			wind_entry.SetTo(window->TargetModel()->EntryRef());

			if ((*window->TargetModel()->NodeRef() == *node)
				|| dir.Contains(&wind_entry)) {
				
				// ToDo:
				// get rid of the Remove here, BContainerWindow::Quit does it
				fWindowList.RemoveItemAt(index);
				closeList.AddItem(window);
			}
		}
	}

	// now really close the windows
	int32 numItems = closeList.CountItems();
	for (int32 index = 0; index < numItems; index++) {
		BContainerWindow *window = closeList.ItemAt(index);
		window->PostMessage(B_CLOSE_REQUESTED);
	}
}

bool
TTracker::QuitRequested()
{
	// don't allow user quitting
	if (CurrentMessage() && CurrentMessage()->FindBool("shortcut"))
		return false;

	gStatusWindow->AttemptToQuit();
		// try quitting the copy/move/empty trash threads
		
	BVolume bootVolume;
	DEBUG_ONLY(status_t err =) BVolumeRoster().GetBootVolume(&bootVolume);
	ASSERT(err == B_OK);
	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->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);
				}
			}	
		}
	}
	lock.Unlock();

	// write windows to open on disk
	BDirectory deskDir;
	if (!BootedInSafeMode() && FSGetDeskDir(&deskDir, bootVolume.Device()) == 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();
}

void
OpenWithMenu::DoneBuildingItemList()
{
	// sort by app name
	fSupportingAppList->SortItems(SortByRelationAndName, this);

	// check if each app is unique
	bool isUnique = true;
	int32 count = fSupportingAppList->CountItems();
	for (int32 index = 0; index < count - 1; index++) {
		// the list is sorted, just compare two adjacent models
		if (strcmp(fSupportingAppList->ItemAt(index)->fModel->Name(),
			fSupportingAppList->ItemAt(index + 1)->fModel->Name()) == 0) {
			isUnique = false;
			break;
		}
	}

	// add apps as menu items
	BFont font;
	GetFont(&font);

	int32 lastRelation = -1;
	for (int32 index = 0; index < count ; index++) {
		RelationCachingModelProxy* modelProxy
			= fSupportingAppList->ItemAt(index);
		Model* model = modelProxy->fModel;
		BMessage* message = new BMessage(fEntriesToOpen);
		message->AddRef("handler", model->EntryRef());
		BContainerWindow* window
			= dynamic_cast<BContainerWindow*>(fParentWindow);
		if (window != NULL) {
			message->AddData("nodeRefsToClose", B_RAW_TYPE,
				window->TargetModel()->NodeRef(), sizeof(node_ref));
		}

		BString result;
		if (isUnique) {
			// just use the app name
			result = model->Name();
		} else {
			// get a truncated full path
			BPath path;
			BEntry entry(model->EntryRef());
			if (entry.GetPath(&path) != B_OK) {
				PRINT(("stale entry ref %s\n", model->Name()));
				delete message;
				continue;
			}
			result = path.Path();
			font.TruncateString(&result, B_TRUNCATE_MIDDLE, kMaxMenuWidth);
		}
#if DEBUG
		BString relationDescription;
		fIterator->RelationDescription(&fEntriesToOpen, model, &relationDescription);
		result += " (";
		result += relationDescription;
		result += ")";
#endif

		// divide different relations of opening with a separator
		int32 relation = modelProxy->Relation(fIterator, &fEntriesToOpen);
		if (lastRelation != -1 && relation != lastRelation)
			AddSeparatorItem();
		lastRelation = relation;

		ModelMenuItem* item = new ModelMenuItem(model, result.String(),
			message);
		AddItem(item);
		// mark item if it represents the preferred app
		if (fHaveCommonPreferredApp && *(model->EntryRef()) == fPreferredRef) {
			//PRINT(("marking item for % as preferred", model->Name()));
			item->SetMarked(true);
		}
	}

	// target the menu
	if (target != NULL)
		SetTargetForItems(target);
	else
		SetTargetForItems(fMessenger);

	if (CountItems() == 0) {
		BMenuItem* item = new BMenuItem(B_TRANSLATE("no supporting apps"), 0);
		item->SetEnabled(false);
		AddItem(item);
	}
}