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      1 /*
      2  * Copyright (C) 2010 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 package com.android.internal.view;
     17 
     18 import com.android.internal.view.menu.MenuBuilder;
     19 import com.android.internal.view.menu.MenuPopupHelper;
     20 import com.android.internal.view.menu.SubMenuBuilder;
     21 import com.android.internal.widget.ActionBarContextView;
     22 
     23 import android.content.Context;
     24 import android.view.ActionMode;
     25 import android.view.Menu;
     26 import android.view.MenuInflater;
     27 import android.view.MenuItem;
     28 import android.view.View;
     29 import android.view.accessibility.AccessibilityEvent;
     30 
     31 import java.lang.ref.WeakReference;
     32 
     33 public class StandaloneActionMode extends ActionMode implements MenuBuilder.Callback {
     34     private Context mContext;
     35     private ActionBarContextView mContextView;
     36     private ActionMode.Callback mCallback;
     37     private WeakReference<View> mCustomView;
     38     private boolean mFinished;
     39     private boolean mFocusable;
     40 
     41     private MenuBuilder mMenu;
     42 
     43     public StandaloneActionMode(Context context, ActionBarContextView view,
     44             ActionMode.Callback callback, boolean isFocusable) {
     45         mContext = context;
     46         mContextView = view;
     47         mCallback = callback;
     48 
     49         mMenu = new MenuBuilder(context).setDefaultShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
     50         mMenu.setCallback(this);
     51         mFocusable = isFocusable;
     52     }
     53 
     54     @Override
     55     public void setTitle(CharSequence title) {
     56         mContextView.setTitle(title);
     57     }
     58 
     59     @Override
     60     public void setSubtitle(CharSequence subtitle) {
     61         mContextView.setSubtitle(subtitle);
     62     }
     63 
     64     @Override
     65     public void setTitle(int resId) {
     66         setTitle(mContext.getString(resId));
     67     }
     68 
     69     @Override
     70     public void setSubtitle(int resId) {
     71         setSubtitle(mContext.getString(resId));
     72     }
     73 
     74     @Override
     75     public void setTitleOptionalHint(boolean titleOptional) {
     76         super.setTitleOptionalHint(titleOptional);
     77         mContextView.setTitleOptional(titleOptional);
     78     }
     79 
     80     @Override
     81     public boolean isTitleOptional() {
     82         return mContextView.isTitleOptional();
     83     }
     84 
     85     @Override
     86     public void setCustomView(View view) {
     87         mContextView.setCustomView(view);
     88         mCustomView = view != null ? new WeakReference<View>(view) : null;
     89     }
     90 
     91     @Override
     92     public void invalidate() {
     93         mCallback.onPrepareActionMode(this, mMenu);
     94     }
     95 
     96     @Override
     97     public void finish() {
     98         if (mFinished) {
     99             return;
    100         }
    101         mFinished = true;
    102 
    103         mContextView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
    104         mCallback.onDestroyActionMode(this);
    105     }
    106 
    107     @Override
    108     public Menu getMenu() {
    109         return mMenu;
    110     }
    111 
    112     @Override
    113     public CharSequence getTitle() {
    114         return mContextView.getTitle();
    115     }
    116 
    117     @Override
    118     public CharSequence getSubtitle() {
    119         return mContextView.getSubtitle();
    120     }
    121 
    122     @Override
    123     public View getCustomView() {
    124         return mCustomView != null ? mCustomView.get() : null;
    125     }
    126 
    127     @Override
    128     public MenuInflater getMenuInflater() {
    129         return new MenuInflater(mContext);
    130     }
    131 
    132     public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) {
    133         return mCallback.onActionItemClicked(this, item);
    134     }
    135 
    136     public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
    137     }
    138 
    139     public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
    140         if (!subMenu.hasVisibleItems()) {
    141             return true;
    142         }
    143 
    144         new MenuPopupHelper(mContext, subMenu).show();
    145         return true;
    146     }
    147 
    148     public void onCloseSubMenu(SubMenuBuilder menu) {
    149     }
    150 
    151     public void onMenuModeChange(MenuBuilder menu) {
    152         invalidate();
    153         mContextView.showOverflowMenu();
    154     }
    155 
    156     public boolean isUiFocusable() {
    157         return mFocusable;
    158     }
    159 }
    160