C++ BMenuItem::SetMessage方法代码示例

BPopUpMenu*
TPrefsWindow::_BuildFontMenu(BFont* font)
{
	font_family	def_family;
	font_style	def_style;
	font_family	f_family;
	font_style	f_style;

	BPopUpMenu *menu = new BPopUpMenu("");
	font->GetFamilyAndStyle(&def_family, &def_style);

	int32 family_menu_index = 0;
	int family_count = count_font_families();
	for (int family_loop = 0; family_loop < family_count; family_loop++) {
		get_font_family(family_loop, &f_family);
		BMenu *family_menu = new BMenu(f_family);

		int style_count = count_font_styles(f_family);
		for (int style_loop = 0; style_loop < style_count; style_loop++) {
			get_font_style(f_family, style_loop, &f_style);

			BMessage *msg = new BMessage(P_FONT);
			msg->AddString("font", f_family);
			msg->AddString("style", f_style);
			// we send this to make setting the Family easier when things
			// change
			msg->AddInt32("parent_index", family_menu_index);

			BMenuItem *item = new BMenuItem(f_style, msg);
			family_menu->AddItem(item);
			if ((strcmp(def_family, f_family) == 0)
				&& (strcmp(def_style, f_style) == 0)) {
				item->SetMarked(true);
			}

			item->SetTarget(this);
		}

		menu->AddItem(family_menu);
		BMenuItem *item = menu->ItemAt(family_menu_index);
		BMessage *msg = new BMessage(P_FONT);
		msg->AddString("font", f_family);

		item->SetMessage(msg);
		item->SetTarget(this);
		if (strcmp(def_family, f_family) == 0)
			item->SetMarked(true);

		family_menu_index++;
	}
	return menu;
}

void
AccountView::AttachedToWindow()
{
	// Once we are attached to window, the GUI is already created
	// so we can set our window as target for messages
	for (int32 i = 0; i < CountChildren(); i++) {
		BView* child = ChildAt(i);

		BMenu* menu = dynamic_cast<BMenu*>(child);
		BMenuField* menuField
			= dynamic_cast<BMenuField*>(child);
		BTextControl* textControl
			= dynamic_cast<BTextControl*>(child);
		NotifyingTextView* textView
			= dynamic_cast<NotifyingTextView*>(child);
		BCheckBox* checkBox = dynamic_cast<BCheckBox*>(child);

		if (menuField)
			menu = menuField->Menu();

		if (menu) {
			for (int32 j = 0; j < menu->CountItems(); j++) {
				BMenuItem* item = menu->ItemAt(j);
				item->SetMessage(new BMessage(kChanged));
				item->SetTarget(Window());
			}

			menu->SetTargetForItems(Window());
		}

		if (textControl) {
			textControl->SetMessage(new BMessage(kChanged));
			textControl->SetTarget(Window());
		}

		if (checkBox) {
			checkBox->SetMessage(new BMessage(kChanged));
			checkBox->SetTarget(Window());
		}

		if (textView) {
			textView->SetMessage(new BMessage(kChanged));
			textView->SetTarget(Window());
		}
	}
}

void
BNavMenu::AddNavParentDir(const char *name,const Model *model,uint32 what,BHandler *target)
{
	BNavMenu *menu = new BNavMenu(name,what,target);
	menu->SetNavDir(model->EntryRef());
	menu->SetShowParent(true);
	menu->InitTrackingHook(fTrackingHook.fTrackingHook, &(fTrackingHook.fTarget),
			fTrackingHook.fDragMessage);

	BMenuItem *item = new SpecialModelMenuItem(model,menu);

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

	AddItem(item);
}

status_t
PMenuItem::SetProperty(const char *name, PValue *value, const int32 &index)
{
	if (!name || !value)
		return B_ERROR;
	
	BString str(name);
	PProperty *prop = FindProperty(name,index);
	if (!prop)
		return B_NAME_NOT_FOUND;
	
	if (FlagsForProperty(prop) & PROPERTY_READ_ONLY)
		return B_READ_ONLY;
	
	BMenuItem *backend = (BMenuItem*)fBackend;
	
	BoolValue boolval;
	CharValue charval;
	ColorValue colorval;
	FloatValue floatval;
	IntValue intval;
	PointValue pointval;
	RectValue rectval;
	StringValue stringval;
	
	status_t status = prop->SetValue(value);
	if (status != B_OK)
		return status;

	if (str.ICompare("Message") == 0)
	{
		prop->GetValue(&intval);
		backend->SetMessage(new BMessage(*intval.value));
	}
	else if (str.ICompare("Trigger") == 0)
	{
		prop->GetValue(&charval);
		backend->SetTrigger(*charval.value);
	}
	else if (str.ICompare("Label") == 0)
	{
		prop->GetValue(&stringval);
		backend->SetLabel(*stringval.value);
	}
	else if (str.ICompare("Marked") == 0)
	{
		prop->GetValue(&boolval);
		backend->SetMarked(*boolval.value);
	}
	else if (str.ICompare("Enabled") == 0)
	{
		prop->GetValue(&boolval);
		backend->SetEnabled(*boolval.value);
	}
	else
	{
		return PObject::SetProperty(name, value, index);
	}

	return prop->GetValue(value);
}

void
QPopupMenu::EntryCreated(const entry_ref &ref, ino_t node)
{
	BNode file;
	if (file.SetTo(&ref) < B_OK)
		return;

	// Make sure the pop-up menu is ready for additions.  Need a bunch of
	// groups at the top, a divider line, and miscellaneous people added below
	// the line.

	int32 items = CountItems();
	if (!items)
		AddSeparatorItem();

	// Does the file have a group attribute?  OK to have none.
	BString groups;
	const char *kNoGroup = "NoGroup!";
	file.ReadAttrString("META:group", &groups);
	if (groups.Length() <= 0)
		groups = kNoGroup;

	// Add the e-mail address to the all people group.  Then add it to all the
	// group menus that it exists in (based on the comma separated list of
	// groups from the People file), optionally making the group menu if it
	// doesn't exist.  If it's in the special NoGroup!  list, then add it below
	// the groups.

	bool allPeopleGroupDone = false;
	BMenu *groupMenu;
	do {
		BString group;

		if (!allPeopleGroupDone) {
			// Create the default group for all people, if it doesn't exist yet.
			group = "All People";
			allPeopleGroupDone = true;
		} else {
			// Break out the next group from the comma separated string.
			int32 comma;
			if ((comma = groups.FindFirst(',')) > 0) {
				groups.MoveInto(group, 0, comma);
				groups.Remove(0, 1);
			} else
				group.Adopt(groups);
		}

		// trim white spaces
		int32 i = 0;
		for (i = 0; isspace(group.ByteAt(i)); i++) {}
		if (i)
			group.Remove(0, i);
		for (i = group.Length() - 1; isspace(group.ByteAt(i)); i--) {}
		group.Truncate(i + 1);

		groupMenu = NULL;
		BMenuItem *superItem = NULL; // Corresponding item for group menu.

		if (group.Length() > 0 && group != kNoGroup) {
			BMenu *sub;

			// Look for submenu with label == group name
			for (int32 i = 0; i < items; i++) {
				if ((sub = SubmenuAt(i)) != NULL) {
					superItem = sub->Superitem();
					if (!strcmp(superItem->Label(), group.String())) {
						groupMenu = sub;
						i++;
						break;
					}
				}
			}

			// If no submenu, create one
			if (!groupMenu) {
				// Find where it should go (alphabetical)
				int32 mindex = 0;
				for (; mindex < fGroups; mindex++) {
					if (strcmp(ItemAt(mindex)->Label(), group.String()) > 0)
						break;
				}

				groupMenu = new BMenu(group.String());
				groupMenu->SetFont(be_plain_font);
				AddItem(groupMenu, mindex);

				superItem = groupMenu->Superitem();
				superItem->SetMessage(new BMessage(B_SIMPLE_DATA));
				if (fTargetHandler)
					superItem->SetTarget(fTargetHandler);

				fGroups++;
			}
		}

		BString	name;
		file.ReadAttrString("META:name", &name);

		BString email;
		file.ReadAttrString("META:email", &email);
//.........这里部分代码省略.........