Java tutorial
/* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.support.v7ox.view.menu; import android.content.Context; import android.graphics.drawable.Drawable; import android.support.v4ox.content.ContextCompat; import android.view.Menu; import android.view.MenuItem; import android.view.SubMenu; import android.view.View; /** * The model for a sub menu, which is an extension of the menu. Most methods are proxied to the * parent menu. * * @hide */ public class SubMenuBuilder extends MenuBuilder implements SubMenu { private MenuBuilder mParentMenu; private MenuItemImpl mItem; public SubMenuBuilder(Context context, MenuBuilder parentMenu, MenuItemImpl item) { super(context); mParentMenu = parentMenu; mItem = item; } @Override public void setQwertyMode(boolean isQwerty) { mParentMenu.setQwertyMode(isQwerty); } @Override public boolean isQwertyMode() { return mParentMenu.isQwertyMode(); } @Override public void setShortcutsVisible(boolean shortcutsVisible) { mParentMenu.setShortcutsVisible(shortcutsVisible); } @Override public boolean isShortcutsVisible() { return mParentMenu.isShortcutsVisible(); } public Menu getParentMenu() { return mParentMenu; } public MenuItem getItem() { return mItem; } @Override public void setCallback(Callback callback) { mParentMenu.setCallback(callback); } @Override public MenuBuilder getRootMenu() { return mParentMenu; } @Override boolean dispatchMenuItemSelected(MenuBuilder menu, MenuItem item) { return super.dispatchMenuItemSelected(menu, item) || mParentMenu.dispatchMenuItemSelected(menu, item); } public SubMenu setIcon(Drawable icon) { mItem.setIcon(icon); return this; } public SubMenu setIcon(int iconRes) { mItem.setIcon(iconRes); return this; } public SubMenu setHeaderIcon(Drawable icon) { super.setHeaderIconInt(icon); return this; } public SubMenu setHeaderIcon(int iconRes) { super.setHeaderIconInt(ContextCompat.getDrawable(getContext(), iconRes)); return this; } public SubMenu setHeaderTitle(CharSequence title) { super.setHeaderTitleInt(title); return this; } public SubMenu setHeaderTitle(int titleRes) { super.setHeaderTitleInt(getContext().getResources().getString(titleRes)); return this; } public SubMenu setHeaderView(View view) { super.setHeaderViewInt(view); return this; } @Override public boolean expandItemActionView(MenuItemImpl item) { return mParentMenu.expandItemActionView(item); } @Override public boolean collapseItemActionView(MenuItemImpl item) { return mParentMenu.collapseItemActionView(item); } @Override public String getActionViewStatesKey() { final int itemId = mItem != null ? mItem.getItemId() : 0; if (itemId == 0) { return null; } return super.getActionViewStatesKey() + ":" + itemId; } }