C++ Model::EntryRef方法代码示例

void
BSlowContextMenu::BuildVolumeMenu()
{
	BVolumeRoster roster;
	BVolume	volume;

	roster.Rewind();
	while (roster.GetNextVolume(&volume) == B_OK) {
		
		if (!volume.IsPersistent())
			continue;
		
		BDirectory startDir;
		if (volume.GetRootDirectory(&startDir) == B_OK) {
			BEntry entry;
			startDir.GetEntry(&entry);

			Model *model = new Model(&entry);
			if (model->InitCheck() != B_OK) {
				delete model;
				continue;
			}
			
			BNavMenu *menu = new BNavMenu(model->Name(), fMessage.what,
				fMessenger, fParentWindow, fTypesList);

			menu->SetNavDir(model->EntryRef());
			menu->InitTrackingHook(fTrackingHook.fTrackingHook, &(fTrackingHook.fTarget),
				fTrackingHook.fDragMessage);

			ASSERT(menu->Name());

			ModelMenuItem *item = new ModelMenuItem(model, menu);
			BMessage *message = new BMessage(fMessage);

			message->AddRef("refs", model->EntryRef());
			item->SetMessage(message);
			fItemList->AddItem(item);
			ASSERT(item->Label());
		}
	}
}

void
TFilePanel::HandleOpenButton()
{
	PoseView()->CommitActivePose();
	BObjectList<BPose>* selection = PoseView()->SelectionList();

	// if we have only one directory and we're not opening dirs, enter.
	if ((fNodeFlavors & B_DIRECTORY_NODE) == 0
		&& selection->CountItems() == 1) {
		Model* model = selection->FirstItem()->TargetModel();

		if (model->IsDirectory()
			|| (model->IsSymLink() && !(fNodeFlavors & B_SYMLINK_NODE)
				&& model->ResolveIfLink()->IsDirectory())) {

			BMessage message(B_REFS_RECEIVED);
			message.AddRef("refs", model->EntryRef());
			PostMessage(&message);
			return;
		}
	}

	// don't do anything unless there are items selected
    // message->fMessage->message from here to end
	if (selection->CountItems()) {
		BMessage message(*fMessage);
		// go through selection and add appropriate items
		for (int32 index = 0; index < selection->CountItems(); index++) {
			Model* model = selection->ItemAt(index)->TargetModel();

			if (((fNodeFlavors & B_DIRECTORY_NODE) != 0
					&& model->ResolveIfLink()->IsDirectory())
				|| ((fNodeFlavors & B_SYMLINK_NODE) != 0 && model->IsSymLink())
				|| ((fNodeFlavors & B_FILE_NODE) != 0
					&& model->ResolveIfLink()->IsFile())) {
				message.AddRef("refs", model->EntryRef());
			}
		}

		OpenSelectionCommon(&message);
	}
}

status_t
VirtualDirectoryPoseView::_UpdateDirectoryPaths()
{
	VirtualDirectoryManager* manager = VirtualDirectoryManager::Instance();
	Model* model = TargetModel();
	status_t error = manager->ResolveDirectoryPaths(*model->NodeRef(),
		*model->EntryRef(), fDirectoryPaths);
	if (error != B_OK)
		return error;

	manager->GetDefinitionFileChangeTime(*model->NodeRef(), fFileChangeTime);
	return B_OK;
}

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;
}

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();
	}
}

uint32
FSClipboardAddPoses(const node_ref *directory, PoseList *list, uint32 moveMode,
	bool clearClipboard)
{
	uint32 refsAdded = 0;
	int32 listCount = list->CountItems();

	if (listCount == 0 || !be_clipboard->Lock())
		return 0;

	// update message to be send to all listeners
	BMessage updateMessage(kFSClipboardChanges);
	updateMessage.AddInt32("device", directory->device);
	updateMessage.AddInt64("directory", directory->node);
	updateMessage.AddBool("clearClipboard", clearClipboard);

	TClipboardNodeRef clipNode;
	clipNode.moveMode = moveMode;

	if (clearClipboard)
		be_clipboard->Clear();

	BMessage *clip = be_clipboard->Data();
	if (clip != NULL) {
		for (int32 index = 0; index < listCount; index++) {
			char refName[64], modeName[64];
			BPose *pose = (BPose *)list->ItemAt(index);
			Model *model = pose->TargetModel();
			const node_ref *node = model->NodeRef();

			BEntry entry;
			model->GetEntry(&entry);
			if (model->IsVolume()
				|| model->IsRoot()
				|| FSIsTrashDir(&entry)
				|| FSIsDeskDir(&entry))
				continue;

			MakeRefName(refName, node);
			MakeModeNameFromRefName(modeName, refName);

			if (clearClipboard) {
				if (clip->AddInt32(modeName, (int32)moveMode) == B_OK)
					if (clip->AddRef(refName, model->EntryRef()) == B_OK) {
						pose->SetClipboardMode(moveMode);

						clipNode.node = *node;
						updateMessage.AddData("tcnode", T_CLIPBOARD_NODE, &clipNode,
							sizeof(TClipboardNodeRef), true, listCount);

						refsAdded++;
					} else
						clip->RemoveName(modeName);
			} else {
				if (clip->ReplaceInt32(modeName, (int32)moveMode) == B_OK) {
					// replace old mode if entry already exists in clipboard
					if (clip->ReplaceRef(refName, model->EntryRef()) == B_OK) {
						pose->SetClipboardMode(moveMode);

						clipNode.node = *node;
						updateMessage.AddData("tcnode", T_CLIPBOARD_NODE, &clipNode,
							sizeof(TClipboardNodeRef), true, listCount);

						refsAdded++;
					} else {
						clip->RemoveName(modeName);
						
						clipNode.node = *node;
						clipNode.moveMode = kDelete;	// note removing node
						updateMessage.AddData("tcnode", T_CLIPBOARD_NODE, &clipNode,
							sizeof(TClipboardNodeRef), true, listCount);
						clipNode.moveMode = moveMode; // set it back to current value
					}
				} else {
					// add it if it doesn't exist
					if (clip->AddRef(refName, model->EntryRef()) == B_OK
						&& clip->AddInt32(modeName, (int32)moveMode) == B_OK) {
						pose->SetClipboardMode(moveMode);
						
						clipNode.node = *node;
						updateMessage.AddData("tcnode", T_CLIPBOARD_NODE, &clipNode,
							sizeof(TClipboardNodeRef), true, listCount);

						refsAdded++;
					} else {
						clip->RemoveName(modeName);
						clip->RemoveName(refName);
						// here notifying delete isn't needed as node didn't
						// exist in clipboard
					}
				}
			}
		}
		be_clipboard->Commit();
	}	
	be_clipboard->Unlock();

	BMessenger(kTrackerSignature).SendMessage(&updateMessage);
		// Tracker will notify all listeners

//.........这里部分代码省略.........

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;
}