C++ Menu::AddSeparatorItem方法代码示例

static Menu*
add_debug_menu()
{
	Menu* menu = new(std::nothrow) Menu(STANDARD_MENU, "Debug Options");
	MenuItem* item;

#if DEBUG_SPINLOCK_LATENCIES
	item = new(std::nothrow) MenuItem("Disable latency checks");
	if (item != NULL) {
		item->SetType(MENU_ITEM_MARKABLE);
		item->SetData(B_SAFEMODE_DISABLE_LATENCY_CHECK);
		item->SetHelpText("Disables latency check panics.");
		menu->AddItem(item);
	}
#endif

	menu->AddItem(item
		= new(nothrow) MenuItem("Enable serial debug output"));
	item->SetData("serial_debug_output");
	item->SetType(MENU_ITEM_MARKABLE);
    item->SetHelpText("Turns on forwarding the syslog output to the serial "
		"interface.");

	menu->AddItem(item
		= new(nothrow) MenuItem("Enable on screen debug output"));
	item->SetData("debug_screen");
	item->SetType(MENU_ITEM_MARKABLE);
    item->SetHelpText("Displays debug output on screen while the system "
		"is booting, instead of the normal boot logo.");

	menu->AddItem(item = new(nothrow) MenuItem("Enable debug syslog"));
	item->SetType(MENU_ITEM_MARKABLE);
	item->SetMarked(gKernelArgs.keep_debug_output_buffer);
	item->SetTarget(&debug_menu_toggle_debug_syslog);
    item->SetHelpText("Enables a special in-memory syslog buffer for this "
    	"session that the boot loader will be able to access after rebooting.");

	ring_buffer* syslogBuffer = (ring_buffer*)gKernelArgs.debug_output;
	if (syslogBuffer != NULL && ring_buffer_readable(syslogBuffer) > 0) {
		menu->AddSeparatorItem();

		menu->AddItem(item
			= new(nothrow) MenuItem("Display syslog from previous session"));
		item->SetTarget(&debug_menu_display_syslog);
		item->SetType(MENU_ITEM_NO_CHOICE);
		item->SetHelpText(
			"Displays the syslog from the previous Haiku session.");

		menu->AddItem(item = new(nothrow) MenuItem(
			"Save syslog from previous session", add_save_debug_syslog_menu()));
		item->SetHelpText("Saves the syslog from the previous Haiku session to "
			"disk. Currently only FAT32 volumes are supported.");
	}

	menu->AddSeparatorItem();
	menu->AddItem(item = new(nothrow) MenuItem("Return to main menu"));

	return menu;
}

static Menu *
add_boot_volume_menu(Directory *bootVolume)
{
    Menu *menu = new(nothrow) Menu(CHOICE_MENU, "Select Boot Volume");
    MenuItem *item;
    void *cookie;
    int32 count = 0;

    if (gRoot->Open(&cookie, O_RDONLY) == B_OK) {
        Directory *volume;
        while (gRoot->GetNextNode(cookie, (Node **)&volume) == B_OK) {
            // only list bootable volumes
            if (!is_bootable(volume))
                continue;

            char name[B_FILE_NAME_LENGTH];
            if (volume->GetName(name, sizeof(name)) == B_OK) {
                menu->AddItem(item = new(nothrow) MenuItem(name));
                item->SetTarget(user_menu_boot_volume);
                item->SetData(volume);

                if (volume == bootVolume) {
                    item->SetMarked(true);
                    item->Select(true);
                }

                count++;
            }
        }
        gRoot->Close(cookie);
    }

    if (count == 0) {
        // no boot volume found yet
        menu->AddItem(item = new(nothrow) MenuItem("<No boot volume found>"));
        item->SetType(MENU_ITEM_NO_CHOICE);
        item->SetEnabled(false);
    }

    menu->AddSeparatorItem();

    menu->AddItem(item = new(nothrow) MenuItem("Rescan volumes"));
    item->SetHelpText("Please insert a Antares CD-ROM or attach a USB disk - "
                      "depending on your system, you can then boot from them.");
    item->SetType(MENU_ITEM_NO_CHOICE);
    if (count == 0)
        item->Select(true);

    menu->AddItem(item = new(nothrow) MenuItem("Return to main menu"));
    item->SetType(MENU_ITEM_NO_CHOICE);

    if (gKernelArgs.boot_volume.GetBool(BOOT_VOLUME_BOOTED_FROM_IMAGE, false))
        menu->SetChoiceText("CD-ROM or hard drive");

    return menu;
}

Menu *
video_mode_menu()
{
	Menu *menu = new(nothrow) Menu(CHOICE_MENU, "Select Video Mode");
	MenuItem *item;

	menu->AddItem(item = new(nothrow) MenuItem("Default"));
	item->SetMarked(true);
	item->Select(true);
	item->SetHelpText("The Default video mode is the one currently configured "
		"in the system. If there is no mode configured yet, a viable mode will "
		"be chosen automatically.");


	menu->AddSeparatorItem();
	menu->AddItem(item = new(nothrow) MenuItem("Return to main menu"));
	item->SetType(MENU_ITEM_NO_CHOICE);

	return menu;
}

status_t
user_menu(BootVolume& _bootVolume, PathBlacklist& _pathBlacklist)
{

	Menu* menu = new(std::nothrow) Menu(MAIN_MENU);

	sMainMenu = menu;
	sBootVolume = &_bootVolume;
	sPathBlacklist = &_pathBlacklist;

	Menu* safeModeMenu = NULL;
	Menu* debugMenu = NULL;
	MenuItem* item;

	TRACE(("user_menu: enter\n"));

	// Add boot volume
	menu->AddItem(item = new(std::nothrow) MenuItem("Select boot volume",
		add_boot_volume_menu()));

	// Add safe mode
	menu->AddItem(item = new(std::nothrow) MenuItem("Select safe mode options",
		safeModeMenu = add_safe_mode_menu()));

	// add debug menu
	menu->AddItem(item = new(std::nothrow) MenuItem("Select debug options",
		debugMenu = add_debug_menu()));

	// Add platform dependent menus
	platform_add_menus(menu);

	menu->AddSeparatorItem();

	menu->AddItem(item = new(std::nothrow) MenuItem("Reboot"));
	item->SetTarget(user_menu_reboot);
	item->SetShortcut('r');

	menu->AddItem(item = new(std::nothrow) MenuItem("Continue booting"));
	if (!_bootVolume.IsValid()) {
		item->SetEnabled(false);
		menu->ItemAt(0)->Select(true);
	} else
		item->SetShortcut('b');

	menu->Run();

	apply_safe_mode_options(safeModeMenu);
	apply_safe_mode_options(debugMenu);
	apply_safe_mode_path_blacklist();
	add_safe_mode_settings(sSafeModeOptionsBuffer.String());
	delete menu;


	TRACE(("user_menu: leave\n"));

	sMainMenu = NULL;
	sBlacklistRootMenu = NULL;
	sBootVolume = NULL;
	sPathBlacklist = NULL;
	return B_OK;
}