C++ BContainerWindow类代码示例

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
BTitleView::MouseMoved(BPoint where, uint32 code, const BMessage* dragMessage)
{
	BContainerWindow* window = dynamic_cast<BContainerWindow*>(Window());
	if (window == NULL)
		return;

	if (fTrackingState != NULL) {
		int32 buttons = 0;
		if (Looper() != NULL && Looper()->CurrentMessage() != NULL)
			Looper()->CurrentMessage()->FindInt32("buttons", &buttons);
		fTrackingState->MouseMoved(where, buttons);
		return;
	}

	switch (code) {
		default:
			if (InColumnResizeArea(where) && window->IsActive())
				SetViewCursor(&fHorizontalResizeCursor);
			else
				SetViewCursor(B_CURSOR_SYSTEM_DEFAULT);
			break;

		case B_EXITED_VIEW:
			SetViewCursor(B_CURSOR_SYSTEM_DEFAULT);
			break;
	}

	_inherited::MouseMoved(where, code, dragMessage);
}

bool 
TTracker::CloseParentWaitingForChild(const entry_ref *child,
	const node_ref *parent)
{
	AutoLock<WindowList> lock(&fWindowList);
	
	BContainerWindow *parentWindow = FindContainerWindow(parent);
	if (!parentWindow)
		// parent window already closed, give up
		return true;

	// If child is a symbolic link, dereference it, so that
	// FindContainerWindow will succeed.
	BEntry entry(child, true);
	entry_ref resolvedChild;
	if (entry.GetRef(&resolvedChild) != B_OK)
		resolvedChild = *child;

	BContainerWindow *window = FindContainerWindow(&resolvedChild);
	if (window) {
		AutoLock<BWindow> lock(window);
		if (!window->IsHidden())
			return CloseParentWindowCommon(parentWindow);
	}
	return false;	
}

void
TTracker::MoveRefsToTrash(const BMessage *message)
{
	int32 count;
	uint32 type;
	message->GetInfo("refs", &type, &count);

	if (count <= 0)
		return;

	BObjectList<entry_ref> *srcList = new BObjectList<entry_ref>(count, true);

	for (int32 index = 0; index < count; index++) {

		entry_ref ref;
		ASSERT(message->FindRef("refs", index, &ref) == B_OK);
		if (message->FindRef("refs", index, &ref) != B_OK)
			continue;

		AutoLock<WindowList> lock(&fWindowList);
		BContainerWindow *window = FindParentContainerWindow(&ref);
		if (window)
			// if we have a window open for this entry, ask the pose to
			// delete it, this will select the next entry
			window->PoseView()->MoveEntryToTrash(&ref);
		else
			// add all others to a list that gets deleted separately
			srcList->AddItem(new entry_ref(ref));
	}

	if (srcList->CountItems())
		// async move to trash
		FSMoveToTrash(srcList);
}

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);
		}
	}
}

static filter_result
TextViewFilter(BMessage* message, BHandler**, BMessageFilter* filter)
{
	uchar key;
	if (message->FindInt8("byte", (int8*)&key) != B_OK)
		return B_DISPATCH_MESSAGE;

	ThrowOnAssert(filter != NULL);

	BContainerWindow* window = dynamic_cast<BContainerWindow*>(
		filter->Looper());
	ThrowOnAssert(window != NULL);

	BPoseView* poseView = window->PoseView();
	ThrowOnAssert(poseView != NULL);

	if (key == B_RETURN || key == B_ESCAPE) {
		poseView->CommitActivePose(key == B_RETURN);
		return B_SKIP_MESSAGE;
	}

	if (key == B_TAB) {
		if (poseView->ActivePose()) {
			if (message->FindInt32("modifiers") & B_SHIFT_KEY)
				poseView->ActivePose()->EditPreviousWidget(poseView);
			else
				poseView->ActivePose()->EditNextWidget(poseView);
		}

		return B_SKIP_MESSAGE;
	}

	// the BTextView doesn't respect window borders when resizing itself;
	// we try to work-around this "bug" here.

	// find the text editing view
	BView* scrollView = poseView->FindView("BorderView");
	if (scrollView != NULL) {
		BTextView* textView = dynamic_cast<BTextView*>(
			scrollView->FindView("WidgetTextView"));
		if (textView != NULL) {
			BRect rect = scrollView->Frame();

			if (rect.right + 3 > poseView->Bounds().right
				|| rect.left - 3 < 0)
				textView->MakeResizable(true, NULL);
		}
	}

	return B_DISPATCH_MESSAGE;
}

void
TTracker::SaveAllPoseLocations()
{
	int32 numWindows = fWindowList.CountItems();
	for (int32 windowIndex = 0; windowIndex < numWindows; windowIndex++) {
		BContainerWindow* window = dynamic_cast<BContainerWindow*>(
			fWindowList.ItemAt(windowIndex));
		if (window != NULL) {
			AutoLock<BWindow> lock(window);
			BDeskWindow* deskWindow = dynamic_cast<BDeskWindow*>(window);
			if (deskWindow != NULL)
				deskWindow->SaveDesktopPoseLocations();
			else
				window->PoseView()->SavePoseLocations();
		}
	}
}

BContainerWindow *
TTracker::FindParentContainerWindow(const entry_ref *ref) const
{
	BEntry entry(ref);
	BEntry parent;
	
	if (entry.GetParent(&parent) != B_OK)
		return NULL;
	
	entry_ref parentRef;
	parent.GetRef(&parentRef);

	ASSERT(fWindowList.IsLocked());
	
	int32 count = fWindowList.CountItems();
	for (int32 index = 0; index < count; index++) {
		BContainerWindow *window = dynamic_cast<BContainerWindow *>
			(fWindowList.ItemAt(index));
		if (window && window->IsShowing(&parentRef))
			return window;
	}
	return NULL;
}

void
DesktopPoseView::AdaptToVolumeChange(BMessage* message)
{
	TTracker* tracker = dynamic_cast<TTracker*>(be_app);
	if (!tracker)
		return;

	bool showDisksIcon = false;
	bool mountVolumesOnDesktop = true;
	bool mountSharedVolumesOntoDesktop = false;

	message->FindBool("ShowDisksIcon", &showDisksIcon);
	message->FindBool("MountVolumesOntoDesktop", &mountVolumesOnDesktop);
	message->FindBool("MountSharedVolumesOntoDesktop",
		&mountSharedVolumesOntoDesktop);

	BEntry entry("/");
	Model model(&entry);
	if (model.InitCheck() == B_OK) {
		BMessage entryMessage;
		entryMessage.what = B_NODE_MONITOR;

		if (showDisksIcon)
			entryMessage.AddInt32("opcode", B_ENTRY_CREATED);
		else {
			entryMessage.AddInt32("opcode", B_ENTRY_REMOVED);
			entry_ref ref;
			if (entry.GetRef(&ref) == B_OK) {
				BContainerWindow* disksWindow
					= tracker->FindContainerWindow(&ref);
				if (disksWindow) {
					disksWindow->Lock();
					disksWindow->Close();
				}
			}
		}
		entryMessage.AddInt32("device", model.NodeRef()->device);
		entryMessage.AddInt64("node", model.NodeRef()->node);
		entryMessage.AddInt64("directory", model.EntryRef()->directory);
		entryMessage.AddString("name", model.EntryRef()->name);
		BContainerWindow* deskWindow
			= dynamic_cast<BContainerWindow*>(Window());
		if (deskWindow)
			deskWindow->PostMessage(&entryMessage, deskWindow->PoseView());
	}

	ShowVolumes(mountVolumesOnDesktop, mountSharedVolumesOntoDesktop);
}

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);
	}
}

void
BTitleView::MouseDown(BPoint where)
{
	if (!Window()->IsActive()) {
		// wasn't active, just activate and bail
		Window()->Activate();
		return;
	}

	// finish any pending edits
	fPoseView->CommitActivePose();

	BColumnTitle *title = FindColumnTitle(where);
	BColumnTitle *resizedTitle = InColumnResizeArea(where);

	uint32 buttons;
	GetMouse(&where, &buttons);

	// Check if the user clicked the secondary mouse button.
	// if so, display the attribute menu:

	if (buttons & B_SECONDARY_MOUSE_BUTTON) {
		BContainerWindow *window = dynamic_cast<BContainerWindow *>
			(Window());
		BPopUpMenu *menu = new BPopUpMenu("Attributes", false, false);
		menu->SetFont(be_plain_font);
		window->NewAttributeMenu(menu);
		window->AddMimeTypesToMenu(menu);
		window->MarkAttributeMenu(menu);
		menu->SetTargetForItems(window->PoseView());
		menu->Go(ConvertToScreen(where), true, false);
		return;
	}

	bigtime_t doubleClickSpeed;
	get_click_speed(&doubleClickSpeed);

	if (resizedTitle) {
		bool force = static_cast<bool>(buttons & B_TERTIARY_MOUSE_BUTTON);
		if (force || buttons & B_PRIMARY_MOUSE_BUTTON) {
			if (force || fPreviouslyClickedColumnTitle != 0) {
				if (force || system_time() - fPreviousLeftClickTime < doubleClickSpeed) {
					if (fPoseView->ResizeColumnToWidest(resizedTitle->Column())) {
						Invalidate();
						return;
					}
				}
			}
			fPreviousLeftClickTime = system_time();
			fPreviouslyClickedColumnTitle = resizedTitle;
		}
	} else if (!title)
		return;

	SetMouseEventMask(B_POINTER_EVENTS, B_NO_POINTER_HISTORY | B_LOCK_WINDOW_FOCUS);

	// track the mouse
	if (resizedTitle) {
		fTrackingState = new ColumnResizeState(this, resizedTitle, where,
			system_time() + doubleClickSpeed);
	} else {
		fTrackingState = new ColumnDragState(this, title, where,
			system_time() + doubleClickSpeed);
	}
}

TTracker::TTracker()
	:
	BApplication(kTrackerSignature),
	fMimeTypeList(NULL),
	fClipboardRefsWatcher(NULL),
	fTrashWatcher(NULL),
	fTaskLoop(NULL),
	fNodeMonitorCount(-1),
	fWatchingInterface(new WatchingInterface),
	fSettingsWindow(NULL)
{
	BPathMonitor::SetWatchingInterface(fWatchingInterface);

	// set the cwd to /boot/home, anything that's launched
	// from Tracker will automatically inherit this
	BPath homePath;

	if (find_directory(B_USER_DIRECTORY, &homePath) == B_OK)
		chdir(homePath.Path());

	// ask for a bunch more file descriptors so that nested copying works well
	struct rlimit rl;
	rl.rlim_cur = 512;
	rl.rlim_max = RLIM_SAVED_MAX;
	setrlimit(RLIMIT_NOFILE, &rl);

	fNodeMonitorCount = DEFAULT_MON_NUM;

	gLocalizedNamePreferred
		= BLocaleRoster::Default()->IsFilesystemTranslationPreferred();

#ifdef CHECK_OPEN_MODEL_LEAKS
	InitOpenModelDumping();
#endif

	InitIconPreloader();

#ifdef LEAK_CHECKING
	SetNewLeakChecking(true);
	SetMallocLeakChecking(true);
#endif

	// This is how often it should update the free space bar on the
	// volume icons
	SetPulseRate(1000000);

	gLaunchLooper = new LaunchLooper();
	gLaunchLooper->Run();

	// open desktop window
	BContainerWindow* deskWindow = NULL;
	BDirectory deskDir;
	if (FSGetDeskDir(&deskDir) == B_OK) {
		// create desktop
		BEntry entry;
		deskDir.GetEntry(&entry);
		Model* model = new Model(&entry, true);
		if (model->InitCheck() == B_OK) {
			AutoLock<WindowList> lock(&fWindowList);
			deskWindow = new BDeskWindow(&fWindowList);
			AutoLock<BWindow> windowLock(deskWindow);
			deskWindow->CreatePoseView(model);
			deskWindow->Init();

			if (TrackerSettings().ShowDisksIcon()) {
				// create model for root of everything
				BEntry entry("/");
				Model model(&entry);
				if (model.InitCheck() == B_OK) {
					// add the root icon to desktop window
					BMessage message;
					message.what = B_NODE_MONITOR;
					message.AddInt32("opcode", B_ENTRY_CREATED);
					message.AddInt32("device", model.NodeRef()->device);
					message.AddInt64("node", model.NodeRef()->node);
					message.AddInt64("directory",
						model.EntryRef()->directory);
					message.AddString("name", model.EntryRef()->name);
					deskWindow->PostMessage(&message, deskWindow->PoseView());
				}
			}
		} else
			delete model;
	}
}

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);
	}
}

void
TTracker::ReadyToRun()
{
	gStatusWindow = new BStatusWindow();
	InitMimeTypes();
	InstallDefaultTemplates();
	InstallIndices();
	InstallTemporaryBackgroundImages();

	fTrashWatcher = new BTrashWatcher();
	fTrashWatcher->Run();

	fClipboardRefsWatcher = new BClipboardRefsWatcher();
	fClipboardRefsWatcher->Run();

	fTaskLoop = new StandAloneTaskLoop(true);

	// open desktop window
	BContainerWindow *deskWindow = NULL;
	BDirectory deskDir;
	if (FSGetDeskDir(&deskDir) == B_OK) {
		// create desktop
		BEntry entry;
		deskDir.GetEntry(&entry);
		Model *model = new Model(&entry, true);
		if (model->InitCheck() == B_OK) {
			AutoLock<WindowList> lock(&fWindowList);
			deskWindow = new BDeskWindow(&fWindowList);
			AutoLock<BWindow> windowLock(deskWindow);
			deskWindow->CreatePoseView(model);
			deskWindow->Init();

			if (TrackerSettings().ShowDisksIcon()) {
				// create model for root of everything
				BEntry entry("/");
				Model model(&entry);
				if (model.InitCheck() == B_OK) {
					// add the root icon to desktop window
					BMessage message;
					message.what = B_NODE_MONITOR;
					message.AddInt32("opcode", B_ENTRY_CREATED);
					message.AddInt32("device", model.NodeRef()->device);
					message.AddInt64("node", model.NodeRef()->node);
					message.AddInt64("directory", model.EntryRef()->directory);
					message.AddString("name", model.EntryRef()->name);
					deskWindow->PostMessage(&message, deskWindow->PoseView());
				}
			}
		} else
			delete model;
	}

	// kick off building the mime type list for find panels, etc.
	fMimeTypeList = new MimeTypeList();

	if (!BootedInSafeMode()) {
		// kick of transient query killer
		DeleteTransientQueriesTask::StartUpTransientQueryCleaner();
		// the mount_server will have mounted the previous volumes already.
		_OpenPreviouslyOpenedWindows();
	}
}