public boolean performItemAction(MenuItem item, int flags) {
MenuItemImpl itemImpl = (MenuItemImpl) item;
if (itemImpl == null || !itemImpl.isEnabled()) {
return false;
}
boolean invoked = itemImpl.invoke();
if (itemImpl.hasCollapsibleActionView()) {
invoked |= itemImpl.expandActionView();
if (invoked) close(true);
} else if (item.hasSubMenu()) {
close(false);
final SubMenuBuilder subMenu = (SubMenuBuilder) item.getSubMenu();
final ActionProvider provider = item.getActionProvider();
if (provider != null && provider.hasSubMenu()) {
provider.onPrepareSubMenu(subMenu);
}
invoked |= dispatchSubMenuSelected(subMenu);
if (!invoked) close(true);
} else {
if ((flags & FLAG_PERFORM_NO_CLOSE) == 0) {
close(true);
}
}
return invoked;
}
/**
* This function will return all the menu and sub-menu items that can be directly (the shortcut
* directly corresponds) and indirectly (the ALT-enabled char corresponds to the shortcut)
* associated with the keyCode.
*/
void findItemsWithShortcutForKey(List<MenuItemImpl> items, int keyCode, KeyEvent event) {
final boolean qwerty = isQwertyMode();
final int metaState = event.getMetaState();
final KeyCharacterMap.KeyData possibleChars = new KeyCharacterMap.KeyData();
// Get the chars associated with the keyCode (i.e using any chording combo)
final boolean isKeyCodeMapped = event.getKeyData(possibleChars);
// The delete key is not mapped to '\b' so we treat it specially
if (!isKeyCodeMapped && (keyCode != KeyEvent.KEYCODE_DEL)) {
return;
}
// Look for an item whose shortcut is this key.
final int N = mItems.size();
for (int i = 0; i < N; i++) {
MenuItemImpl item = mItems.get(i);
if (item.hasSubMenu()) {
((MenuBuilder) item.getSubMenu()).findItemsWithShortcutForKey(items, keyCode, event);
}
final char shortcutChar = qwerty ? item.getAlphabeticShortcut() : item.getNumericShortcut();
if (((metaState & (KeyEvent.META_SHIFT_ON | KeyEvent.META_SYM_ON)) == 0)
&& (shortcutChar != 0)
&& (shortcutChar == possibleChars.meta[0]
|| shortcutChar == possibleChars.meta[2]
|| (qwerty && shortcutChar == '\b' && keyCode == KeyEvent.KEYCODE_DEL))
&& item.isEnabled()) {
items.add(item);
}
}
}
public void initialize(MenuItemImpl itemData, int menuType) {
mItemData = itemData;
mMenuType = menuType;
setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE);
setTitle(itemData.getTitleForItemView(this));
setCheckable(itemData.isCheckable());
setShortcut(itemData.shouldShowShortcut(), itemData.getShortcut());
setIcon(itemData.getIcon());
setEnabled(itemData.isEnabled());
}