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      1 /*
      2  * Copyright (C) 2006 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.internal.view.menu;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.Drawable;
     21 import android.view.Menu;
     22 import android.view.MenuItem;
     23 import android.view.SubMenu;
     24 import android.view.View;
     25 
     26 /**
     27  * The model for a sub menu, which is an extension of the menu.  Most methods are proxied to
     28  * the parent menu.
     29  */
     30 public class SubMenuBuilder extends MenuBuilder implements SubMenu {
     31     private MenuBuilder mParentMenu;
     32     private MenuItemImpl mItem;
     33 
     34     public SubMenuBuilder(Context context, MenuBuilder parentMenu, MenuItemImpl item) {
     35         super(context);
     36 
     37         mParentMenu = parentMenu;
     38         mItem = item;
     39     }
     40 
     41     @Override
     42     public void setQwertyMode(boolean isQwerty) {
     43         mParentMenu.setQwertyMode(isQwerty);
     44     }
     45 
     46     @Override
     47     public boolean isQwertyMode() {
     48         return mParentMenu.isQwertyMode();
     49     }
     50 
     51     @Override
     52     public void setShortcutsVisible(boolean shortcutsVisible) {
     53         mParentMenu.setShortcutsVisible(shortcutsVisible);
     54     }
     55 
     56     @Override
     57     public boolean isShortcutsVisible() {
     58         return mParentMenu.isShortcutsVisible();
     59     }
     60 
     61     public Menu getParentMenu() {
     62         return mParentMenu;
     63     }
     64 
     65     public MenuItem getItem() {
     66         return mItem;
     67     }
     68 
     69     @Override
     70     public void setCallback(Callback callback) {
     71         mParentMenu.setCallback(callback);
     72     }
     73 
     74     @Override
     75     public MenuBuilder getRootMenu() {
     76         return mParentMenu;
     77     }
     78 
     79     @Override
     80     boolean dispatchMenuItemSelected(MenuBuilder menu, MenuItem item) {
     81         return super.dispatchMenuItemSelected(menu, item) ||
     82                 mParentMenu.dispatchMenuItemSelected(menu, item);
     83     }
     84 
     85     public SubMenu setIcon(Drawable icon) {
     86         mItem.setIcon(icon);
     87         return this;
     88     }
     89 
     90     public SubMenu setIcon(int iconRes) {
     91         mItem.setIcon(iconRes);
     92         return this;
     93     }
     94 
     95     public SubMenu setHeaderIcon(Drawable icon) {
     96         return (SubMenu) super.setHeaderIconInt(icon);
     97     }
     98 
     99     public SubMenu setHeaderIcon(int iconRes) {
    100         return (SubMenu) super.setHeaderIconInt(iconRes);
    101     }
    102 
    103     public SubMenu setHeaderTitle(CharSequence title) {
    104         return (SubMenu) super.setHeaderTitleInt(title);
    105     }
    106 
    107     public SubMenu setHeaderTitle(int titleRes) {
    108         return (SubMenu) super.setHeaderTitleInt(titleRes);
    109     }
    110 
    111     public SubMenu setHeaderView(View view) {
    112         return (SubMenu) super.setHeaderViewInt(view);
    113     }
    114 
    115     @Override
    116     public boolean expandItemActionView(MenuItemImpl item) {
    117         return mParentMenu.expandItemActionView(item);
    118     }
    119 
    120     @Override
    121     public boolean collapseItemActionView(MenuItemImpl item) {
    122         return mParentMenu.collapseItemActionView(item);
    123     }
    124 
    125     @Override
    126     public String getActionViewStatesKey() {
    127         final int itemId = mItem != null ? mItem.getItemId() : 0;
    128         if (itemId == 0) {
    129             return null;
    130         }
    131         return super.getActionViewStatesKey() + ":" + itemId;
    132     }
    133 }
    134