C++ BListView::Select方法代码示例

int32_t
PListViewSelect(void *pobject, void *in, void *out, void *extraData)
{
	if (!pobject || !in || !out)
		return B_ERROR;

	PView *parent = static_cast<PView*>(pobject);
	if (!parent)
		return B_BAD_TYPE;
	
	BListView *backend = (BListView*)parent->GetView();


	PArgs *inArgs = static_cast<PArgs*>(in);

	int32 index;
	if (inArgs->FindInt32("index", &index) != B_OK)
		return B_ERROR;

	bool extend;
	if (inArgs->FindBool("extend", &extend) != B_OK)
		return B_ERROR;

	if (backend->Window())
		backend->Window()->Lock();


	backend->Select(index, extend);

	if (backend->Window())
		backend->Window()->Unlock();

	return B_OK;
}

// Stuff we can only do when the main view is attached to a window
void
OutputFormatView::AttachedToWindow()
{
	// Get the window and lock it
	the_window = Window();
	the_window->Lock();

	// Set some size limits on the window
	the_window->SetSizeLimits(
		200.0,
		32767.0,
		Bounds().Height() - scroll_view->Bounds().Height() + 50.0,
		32767.0);
	// Set the target for messages sent to this view
	list_view->SetTarget(this);
	the_button->SetTarget(this);

	// Make the list view the keyboard focus
	list_view->MakeFocus();

	// Select the first item in the list,
	// and make its config view show up
	if (list_view->CountItems() > 0)
		list_view->Select(0);
	else
		the_button->SetEnabled(false);

	// Unlock the window
	the_window->Unlock();

	// Call the base class
	BView::AttachedToWindow();
}

void GuideWindow::deleteGuide(BMessage *msg)
{
	BStringItem *item = modifyGuide(msg);
	BListView *view = getCurrentListView();
	view->RemoveItem(item);
	view->Select(0);
	view->ScrollToSelection();
}

/**
 *	@brief	Makes specified item selected.
 *	@param[in]	index	item index. if this is -1, no item is selected.
 */
void BeListViewAdapter::SetSelectedItem(SInt32 index)
{
	BListView* listView = getListView();
	int32 current = listView->CurrentSelection(0);
	if (current != index)
	{
		listView->DeselectAll();
		listView->Select(index);
	}
}

//.........这里部分代码省略.........
		BAlert* alert = new BAlert("Error",
			B_TRANSLATE("Unable to find the available languages! You can't "
				"use this preflet!"),
			B_TRANSLATE("OK"), NULL, NULL,
			B_WIDTH_AS_USUAL, B_OFFSET_SPACING, B_STOP_ALERT);
		alert->Go();
	}

	// Second list: active languages
	fPreferredListView = new LanguageListView("preferred",
		B_MULTIPLE_SELECTION_LIST);
	BScrollView* scrollViewEnabled = new BScrollView("scroller",
		fPreferredListView, B_WILL_DRAW | B_FRAME_EVENTS, false, true);

	fPreferredListView->SetInvocationMessage(
		new BMessage(kMsgPreferredLanguageInvoked));
	fPreferredListView->SetDeleteMessage(
		new BMessage(kMsgPreferredLanguageDeleted));
	fPreferredListView->SetDragMessage(
		new BMessage(kMsgPreferredLanguageDragged));

	BLayoutBuilder::Group<>(languageTab)
		.AddGroup(B_VERTICAL, spacing)
			.Add(new BStringView("", B_TRANSLATE("Available languages")))
			.Add(scrollView)
			.End()
		.AddGroup(B_VERTICAL, spacing)
			.Add(new BStringView("", B_TRANSLATE("Preferred languages")))
			.Add(scrollViewEnabled)
			.End()
		.SetInsets(spacing, spacing, spacing, spacing);

	BView* countryTab = new BView(B_TRANSLATE("Country"), B_WILL_DRAW);
	countryTab->SetLayout(new BGroupLayout(B_VERTICAL, 0));

	BListView* listView = new BListView("country", B_SINGLE_SELECTION_LIST);
	scrollView = new BScrollView("scroller", listView,
		B_WILL_DRAW | B_FRAME_EVENTS, false, true);
	listView->SetSelectionMessage(new BMessage(kMsgCountrySelection));

	// get all available countries from ICU
	// Use DateFormat::getAvailableLocale so we get only the one we can
	// use. Maybe check the NumberFormat one and see if there is more.
	int32_t localeCount;
	const Locale* currentLocale = Locale::getAvailableLocales(localeCount);

	for (int index = 0; index < localeCount; index++) {
		UnicodeString countryFullName;
		BString string;
		BStringByteSink sink(&string);
		currentLocale[index].getDisplayName(countryFullName);
		countryFullName.toUTF8(sink);

		LanguageListItem* item
			= new LanguageListItem(string, currentLocale[index].getName(),
				NULL);
		listView->AddItem(item);
		if (!strcmp(currentLocale[index].getName(), defaultCountry->Code()))
			listView->Select(listView->CountItems() - 1);
	}

	// TODO: find a real solution intead of this hack
	listView->SetExplicitMinSize(
		BSize(25 * be_plain_font->Size(), B_SIZE_UNSET));

	fFormatView = new FormatView(defaultCountry);

	countryTab->AddChild(BLayoutBuilder::Group<>(B_HORIZONTAL, spacing)
		.AddGroup(B_VERTICAL, 3)
			.Add(scrollView)
			.End()
		.Add(fFormatView)
		.SetInsets(spacing, spacing, spacing, spacing));

	listView->ScrollToSelection();

	tabView->AddTab(languageTab);
	tabView->AddTab(countryTab);

	BButton* button = new BButton(B_TRANSLATE("Defaults"),
		new BMessage(kMsgDefaults));

	fRevertButton = new BButton(B_TRANSLATE("Revert"),
		new BMessage(kMsgRevert));
	fRevertButton->SetEnabled(false);

	BLayoutBuilder::Group<>(this, B_VERTICAL, spacing)
		.Add(tabView)
		.AddGroup(B_HORIZONTAL, spacing)
			.Add(button)
			.Add(fRevertButton)
			.AddGlue()
			.End()
		.SetInsets(spacing, spacing, spacing, spacing)
		.End();

	_UpdatePreferredFromLocaleRoster();
	SettingsReverted();
	CenterOnScreen();
}

// Handle messages to the main view
void
OutputFormatView::MessageReceived(BMessage *msg)
{
	int32 item_index;
	const char *info_lines[3];

	switch (msg->what)
	{
		case ITEM_SELECTED:
			if (msg->FindInt32("index", &item_index) == B_OK &&
			    item_index >= 0 &&
			    item_index < list_view->CountItems())
			{
				// Store the currently selected item
				// in the class member 'index'
				index = item_index;
				// Update the info view and config view
				int32 outVersion;
				the_roster->GetTranslatorInfo(
					output_list[item_index].translator,
					&name_line,
					&info_line,
					&outVersion);
				int32 ver = outVersion / 100;
				int32 rev1 = (outVersion % 100) / 10;
				int32 rev2 = outVersion % 10;
				sprintf(version_line, "Version %ld.%ld.%ld", ver, rev1, rev2);
				info_lines[0] = name_line;
				info_lines[1] = info_line;
				info_lines[2] = version_line;
				info_view->SetInfoLines(info_lines);
				AddConfigView();
			}
			else
			{
				// Reselect the original item
				if (index >= 0)
					list_view->Select(index);
			}
			break;

		case INVOKE_LIST:
		{
			// The main button was pressed
			// Find out which item is selected, and invoke it
			int32 item_count = list_view->CountItems();
			for (int32 i = 0; i < item_count; ++i)
			{
				if (list_view->IsItemSelected(i))
				{
					list_view->Invoke();
					break;
				}
			}
			break;
		}
		case SEND_MESSAGE:
			// An output format has been selected
			if (!message_sent &&
			    msg->FindInt32("index", &item_index) == B_OK &&
			    item_index >= 0 &&
			    item_index < list_view->CountItems())
			{
				// Get the message from the invoker
				BMessage *the_message=selected_invoker->Message();
				

				// Add some info about the selected output format to it
				the_message->AddInt32("translator", output_list[item_index].translator);
				the_message->AddInt32("type", output_list[item_index].type);

				// Send the message
				selected_invoker->Invoke(the_message);
				message_sent = true;
				the_window->PostMessage(MESSAGE_SENT);
			}
			break;

		default:
			BView::MessageReceived(msg);
			break;
	}
}