C++ Model::CloseNode方法代码示例

void
NodePreloader::PreloadOne(const char* dirPath)
{
	//PRINT(("preloading directory %s\n", dirPath));
	BDirectory dir(dirPath);
	if (!dir.InitCheck() == B_OK)
		return;

	node_ref nodeRef;
	dir.GetNodeRef(&nodeRef);

	// have to node monitor the whole directory
	TTracker::WatchNode(&nodeRef, B_WATCH_DIRECTORY, this);

	dir.Rewind();
	for (;;) {
		entry_ref ref;
		if (dir.GetNextRef(&ref) != B_OK)
			break;

		BEntry entry(&ref);
		if (!entry.IsFile())
			// only interrested in files
			continue;

		Model* model = new Model(&ref, true);
		if (model->InitCheck() == B_OK && model->IconFrom() == kUnknownSource) {
			TTracker::WatchNode(model->NodeRef(),
				B_WATCH_STAT | B_WATCH_ATTR, this);
			IconCache::sIconCache->Preload(model, kNormalIcon, B_MINI_ICON,
				true);
			fModelList.AddItem(model);
			model->CloseNode();
		} else
			delete model;
	}
}

ModelMenuItem * 
BSlowContextMenu::NewModelItem(Model *model, const BMessage *invokeMessage,
	const BMessenger &target, bool suppressFolderHierarchy,
	BContainerWindow *parentWindow, const BObjectList<BString> *typeslist,
	TrackingHookData *hook)
{
	if (model->InitCheck() != B_OK)
		return NULL;

	entry_ref ref;
	bool container = false;
	if (model->IsSymLink()) {
	
		Model *newResolvedModel = NULL;
		Model *result = model->LinkTo();

		if (!result) {
			newResolvedModel = new Model(model->EntryRef(), true, true);

			if (newResolvedModel->InitCheck() != B_OK) {
				// broken link, still can show though, bail
				delete newResolvedModel;
				newResolvedModel = NULL;
			}
			
			result = newResolvedModel;
		}

		if (result) {
			BModelOpener opener(result);
				// open the model, if it ain't open already
					
			PoseInfo poseInfo;
			ssize_t size = -1;
			
			if (result->Node()) 
				size = result->Node()->ReadAttr(kAttrPoseInfo, B_RAW_TYPE, 0,
					&poseInfo, sizeof(poseInfo));
	
			result->CloseNode();

			ref = *result->EntryRef();
			container = result->IsContainer();
		}
		model->SetLinkTo(result);
	} else {
		ref = *model->EntryRef();
		container = model->IsContainer();
	}

	BMessage *message = new BMessage(*invokeMessage);
	message->AddRef("refs", model->EntryRef());

	// Truncate the name if necessary
	BString truncatedString(model->Name());
	be_plain_font->TruncateString(&truncatedString, B_TRUNCATE_END,
		BNavMenu::GetMaxMenuWidth());

	ModelMenuItem *item = NULL;
	if (!container || suppressFolderHierarchy) {
		item = new ModelMenuItem(model, truncatedString.String(), message);
		if (invokeMessage->what != B_REFS_RECEIVED)
			item->SetEnabled(false);
	} else {
		BNavMenu *menu = new BNavMenu(truncatedString.String(),
			invokeMessage->what, target, parentWindow, typeslist);
		
		menu->SetNavDir(&ref);
		if (hook)
			menu->InitTrackingHook(hook->fTrackingHook, &(hook->fTarget),
				hook->fDragMessage);

		item = new ModelMenuItem(model, menu);
		item->SetMessage(message);
	}

	return item;
}

status_t
TTracker::OpenRef(const entry_ref *ref, const node_ref *nodeToClose,
	const node_ref *nodeToSelect, OpenSelector selector,
	const BMessage *messageToBundle)
{
	Model *model = NULL;
	BEntry entry(ref, true);
	status_t result = entry.InitCheck();

	bool brokenLinkWithSpecificHandler = false;
	BString brokenLinkPreferredApp;

	if (result != B_OK) {
		model = new Model(ref, false);
		if (model->IsSymLink() && !model->LinkTo()) {
			model->GetPreferredAppForBrokenSymLink(brokenLinkPreferredApp);
			if (brokenLinkPreferredApp.Length() && brokenLinkPreferredApp != kTrackerSignature)
				brokenLinkWithSpecificHandler = true;
		}

		if (!brokenLinkWithSpecificHandler) {
			delete model;
			(new BAlert("", "There was an error resolving the link.",
				"Cancel", 0, 0,
				B_WIDTH_AS_USUAL, B_WARNING_ALERT))->Go();
			return result;
		}
	} else 
		model = new Model(&entry);

	result = model->InitCheck();
	if (result != B_OK) {
		delete model;
		return result;
	}

	bool openAsContainer = model->IsContainer();

	if (openAsContainer && selector != kOpenWith) {
		// if folder or query has a preferred handler and it's not the
		// Tracker, open it by sending refs to the handling app

		// if we are responding to the final open of OpenWith, just
		// skip this and proceed to opening the container with Tracker
		model->OpenNode();
		BNodeInfo nodeInfo(model->Node());
		char preferredApp[B_MIME_TYPE_LENGTH];
		if (nodeInfo.GetPreferredApp(preferredApp) == B_OK
			&& strcasecmp(preferredApp, kTrackerSignature) != 0)
			openAsContainer = false;
		model->CloseNode();
	}

	if (openAsContainer || selector == kRunOpenWithWindow) {
		// special case opening plain folders, queries or using open with
		OpenContainerWindow(model, 0, selector);	// window adopts model
		if (nodeToClose)
			CloseParentWaitingForChildSoon(ref, nodeToClose);
	} else if (model->IsQueryTemplate()) {
		// query template - open new find window
		(new FindWindow(model->EntryRef()))->Show();
		if (nodeToClose)
			CloseParentWaitingForChildSoon(ref, nodeToClose);
	} else {
		delete model;
		// run Launch in a separate thread
		// and close parent if successfull
		if (nodeToClose)
			Thread::Launch(new EntryAndNodeDoSoonWithMessageFunctor<TTracker,
				bool (TTracker::*)(const entry_ref *, const node_ref *,
				const BMessage *)>(&TTracker::LaunchAndCloseParentIfOK, this,
				ref, nodeToClose, messageToBundle));
		else {
			BMessage refsReceived(B_REFS_RECEIVED);
			if (messageToBundle) {
				refsReceived = *messageToBundle;
				refsReceived.what = B_REFS_RECEIVED;
			}
			refsReceived.AddRef("refs", ref);
			if (brokenLinkWithSpecificHandler)
				// This cruft is to support a hacky workaround for double-clicking
				// broken refs for cifs; should get fixed in R5
				LaunchBrokenLink(brokenLinkPreferredApp.String(), &refsReceived);
			else
				TrackerLaunch(&refsReceived, true);
		}
	}
	if (nodeToSelect)
		SelectChildInParentSoon(ref, nodeToSelect);

	return B_OK;
}

BMenuItem*
BRecentItemsList::GetNextMenuItem(const BMessage* fileOpenInvokeMessage,
	const BMessage* containerOpenInvokeMessage, BHandler* target,
	entry_ref* currentItemRef)
{
	entry_ref ref;
	if (GetNextRef(&ref) != B_OK)
		return NULL;

	Model model(&ref, true);
	if (model.InitCheck() != B_OK)
		return NULL;

	bool container = false;
	if (model.IsSymLink()) {

		Model* newResolvedModel = NULL;
		Model* result = model.LinkTo();

		if (result == NULL) {
			newResolvedModel = new Model(model.EntryRef(), true, true);

			if (newResolvedModel->InitCheck() != B_OK) {
				// broken link, still can show though, bail
				delete newResolvedModel;
				result = NULL;
			} else
				result = newResolvedModel;
		} else {
			BModelOpener opener(result);
				// open the model, if it ain't open already

			PoseInfo poseInfo;
			BNode* resultNode = result->Node();
			if (resultNode != NULL) {
				resultNode->ReadAttr(kAttrPoseInfo, B_RAW_TYPE, 0,
					&poseInfo, sizeof(poseInfo));
			}

			result->CloseNode();

			ref = *result->EntryRef();
			container = result->IsContainer();
		}
		model.SetLinkTo(result);
	} else {
		ref = *model.EntryRef();
		container = model.IsContainer();
	}

	// if user asked for it, return the current item ref
	if (currentItemRef != NULL)
		*currentItemRef = ref;

	BMessage* message;
	if (container && containerOpenInvokeMessage)
		message = new BMessage(*containerOpenInvokeMessage);
	else if (!container && fileOpenInvokeMessage)
		message = new BMessage(*fileOpenInvokeMessage);
	else
		message = new BMessage(B_REFS_RECEIVED);

	message->AddRef("refs", model.EntryRef());

	// Truncate the name if necessary
	BString truncatedString(model.Name());
	be_plain_font->TruncateString(&truncatedString, B_TRUNCATE_END,
		BNavMenu::GetMaxMenuWidth());

	ModelMenuItem* item = NULL;
	if (!container || !fNavMenuFolders)
		item = new ModelMenuItem(&model, truncatedString.String(), message);
	else {
		// add another nav menu item if it's a directory
		BNavMenu* menu = new BNavMenu(truncatedString.String(), message->what,
			target, 0);

		menu->SetNavDir(&ref);
		item = new ModelMenuItem(&model, menu);
		item->SetMessage(message);
	}

	if (item != NULL && target != NULL)
		item->SetTarget(target);

	return item;
}

ModelMenuItem * 
BNavMenu::NewModelItem(Model *model, const BMessage *invokeMessage,
	const BMessenger &target, bool suppressFolderHierarchy,
	BContainerWindow *parentWindow, const BObjectList<BString> *typeslist,
	TrackingHookData *hook)
{
	if (model->InitCheck() != B_OK)
		return 0;
	entry_ref ref;
	bool container = false;
	if (model->IsSymLink()) {
	
		Model *newResolvedModel = 0;
		Model *result = model->LinkTo();

		if (!result) {
			newResolvedModel = new Model(model->EntryRef(), true, true);

			if (newResolvedModel->InitCheck() != B_OK) {
				// broken link, still can show though, bail
				delete newResolvedModel;
				result = 0;
			} else
				result = newResolvedModel;
		}

		if (result) {
			BModelOpener opener(result);
				// open the model, if it ain't open already
					
			PoseInfo poseInfo;
			ssize_t size = -1;
			
			if (result->Node()) 
				size = result->Node()->ReadAttr(kAttrPoseInfo, B_RAW_TYPE, 0,
					&poseInfo, sizeof(poseInfo));
	
			result->CloseNode();

			if (size == sizeof(poseInfo) && !BPoseView::PoseVisible(result,
				&poseInfo, false)) {
				// link target sez it doesn't want to be visible,
				// don't show the link
				PRINT(("not showing hidden item %s\n", model->Name()));
				delete newResolvedModel;
				return 0;
			}
			ref = *result->EntryRef();
			container = result->IsContainer();
		}
		model->SetLinkTo(result);
	} else {
		ref = *model->EntryRef();
		container = model->IsContainer();
	}

	BMessage *message = new BMessage(*invokeMessage);
	message->AddRef("refs", model->EntryRef());

	// Truncate the name if necessary
	BString truncatedString;
	TruncString(be_plain_font, model->Name(), truncatedString, GetMaxMenuWidth());

	ModelMenuItem *item = NULL;
	if (!container || suppressFolderHierarchy) {
		item = new ModelMenuItem(model, truncatedString.String(), message);
		if (invokeMessage->what != B_REFS_RECEIVED)
			item->SetEnabled(false);
			// the above is broken for FavoritesMenu::AddNextItem, which uses a
			// workaround - should fix this
	} else {
		BNavMenu *menu = new BNavMenu(truncatedString.String(),
			invokeMessage->what, target, parentWindow, typeslist);
		
		menu->SetNavDir(&ref);
		if (hook)
			menu->InitTrackingHook(hook->fTrackingHook, &(hook->fTarget),
				hook->fDragMessage);

		item = new ModelMenuItem(model, menu);
		item->SetMessage(message);
	}
	
	return item;
}