C++ BRoster::GetRecentDocuments方法代码示例

bool
RecentsMenu::AddRecents(int32 count)
{
	if (fItemIndex == 0) {
		fRecentList.MakeEmpty();
		BRoster roster;

		switch(fWhich) {
			case 0:
				roster.GetRecentDocuments(&fRecentList, count);
				break;
			case 1:
				roster.GetRecentApps(&fRecentList, count);
				break;
			case 2:
				roster.GetRecentFolders(&fRecentList, count);
				break;
			default:
				return false;
				break;
		}
	}
	for (;;) {
		entry_ref ref;
		if (fRecentList.FindRef("refs", fItemIndex++, &ref) != B_OK)
			break;

		if (ref.name != NULL && strlen(ref.name) > 0) {
			Model model(&ref, true);
			ModelMenuItem* item = BNavMenu::NewModelItem(&model,
					new BMessage(fMessage.what),
					Target(), false, NULL, TypesList());

			if (item != NULL) {
				AddItem(item);

				//	return true so that we know to reenter this list
				return true;
			}

			return true;
		}
	}

	//
	//	return false if we are done with this list
	//
	return false;
}

bool
TRecentsMenu::AddRecents(int32 count)
{
	if (fItemIndex == 0) {
		fRecentList.MakeEmpty();
		BRoster roster;

		switch (fWhich) {
			case kRecentDocuments:
				roster.GetRecentDocuments(&fRecentList, count);
				break;
			case kRecentApplications:
				roster.GetRecentApps(&fRecentList, count);
				break;
			case kRecentAppDocuments:
				roster.GetRecentDocuments(&fRecentList, count, NULL,
					fSignature);
				break;
			case kRecentFolders:
				roster.GetRecentFolders(&fRecentList, count);
				break;
			default:
				return false;
		}
	}

	for (;;) {
		entry_ref ref;
		if (fRecentList.FindRef("refs", fItemIndex++, &ref) != B_OK)
			break;

		if (ref.name && strlen(ref.name) > 0) {
			Model model(&ref, true);

			if (fWhich != kRecentApplications) {
				BMessage* message = new BMessage(B_REFS_RECEIVED);
				if (fWhich == kRecentAppDocuments) {
					// add application as handler
					message->AddRef("handler", fAppRef);
				}

				ModelMenuItem* item = BNavMenu::NewModelItem(&model,
					message, Target(), false, NULL, TypesList());

				if (item)
					AddItem(item);
			} else {
				// The application items expand to a list of recent documents
				// for that application - so they must be handled extra
				BFile file(&ref, B_READ_ONLY);
				char signature[B_MIME_TYPE_LENGTH];

				BAppFileInfo appInfo(&file);
				if (appInfo.InitCheck() != B_OK
					|| appInfo.GetSignature(signature) != B_OK)
					continue;

				ModelMenuItem* item = NULL;
				BMessage doc;
				be_roster->GetRecentDocuments(&doc, 1, NULL, signature);
					// ToDo: check if the documents do exist at all to
					//		avoid the creation of the submenu.

				if (doc.CountNames(B_REF_TYPE) > 0) {
					// create recents menu that will contain the recent docs of
					// this app
					TRecentsMenu* docs = new TRecentsMenu(model.Name(),
						fBarView, kRecentAppDocuments, signature, &ref);
					docs->SetTypesList(TypesList());
					docs->SetTarget(Target());

					item = new ModelMenuItem(&model, docs);
				} else
					item = new ModelMenuItem(&model, model.Name(), NULL);

				if (item) {
					// add refs-message so that the recent app can be launched
					BMessage* msg = new BMessage(B_REFS_RECEIVED);
					msg->AddRef("refs", &ref);
					item->SetMessage(msg);
					item->SetTarget(Target());

					AddItem(item);
				}
			}

			// return true so that we know to reenter this list
			return true;
		}
	}

	// return false if we are done with this list
	return false;
}