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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(view.getContext()).setDefaultShowAsAction(
     50                         MenuItem.SHOW_AS_ACTION_IF_ROOM);
     51         mMenu.setCallback(this);
     52         mFocusable = isFocusable;
     53     }
     54 
     55     @Override
     56     public void setTitle(CharSequence title) {
     57         mContextView.setTitle(title);
     58     }
     59 
     60     @Override
     61     public void setSubtitle(CharSequence subtitle) {
     62         mContextView.setSubtitle(subtitle);
     63     }
     64 
     65     @Override
     66     public void setTitle(int resId) {
     67         setTitle(resId != 0 ? mContext.getString(resId) : null);
     68     }
     69 
     70     @Override
     71     public void setSubtitle(int resId) {
     72         setSubtitle(resId != 0 ? mContext.getString(resId) : null);
     73     }
     74 
     75     @Override
     76     public void setTitleOptionalHint(boolean titleOptional) {
     77         super.setTitleOptionalHint(titleOptional);
     78         mContextView.setTitleOptional(titleOptional);
     79     }
     80 
     81     @Override
     82     public boolean isTitleOptional() {
     83         return mContextView.isTitleOptional();
     84     }
     85 
     86     @Override
     87     public void setCustomView(View view) {
     88         mContextView.setCustomView(view);
     89         mCustomView = view != null ? new WeakReference<View>(view) : null;
     90     }
     91 
     92     @Override
     93     public void invalidate() {
     94         mCallback.onPrepareActionMode(this, mMenu);
     95     }
     96 
     97     @Override
     98     public void finish() {
     99         if (mFinished) {
    100             return;
    101         }
    102         mFinished = true;
    103 
    104         mContextView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
    105         mCallback.onDestroyActionMode(this);
    106     }
    107 
    108     @Override
    109     public Menu getMenu() {
    110         return mMenu;
    111     }
    112 
    113     @Override
    114     public CharSequence getTitle() {
    115         return mContextView.getTitle();
    116     }
    117 
    118     @Override
    119     public CharSequence getSubtitle() {
    120         return mContextView.getSubtitle();
    121     }
    122 
    123     @Override
    124     public View getCustomView() {
    125         return mCustomView != null ? mCustomView.get() : null;
    126     }
    127 
    128     @Override
    129     public MenuInflater getMenuInflater() {
    130         return new MenuInflater(mContextView.getContext());
    131     }
    132 
    133     public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) {
    134         return mCallback.onActionItemClicked(this, item);
    135     }
    136 
    137     public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
    138     }
    139 
    140     public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
    141         if (!subMenu.hasVisibleItems()) {
    142             return true;
    143         }
    144 
    145         new MenuPopupHelper(mContextView.getContext(), subMenu).show();
    146         return true;
    147     }
    148 
    149     public void onCloseSubMenu(SubMenuBuilder menu) {
    150     }
    151 
    152     public void onMenuModeChange(MenuBuilder menu) {
    153         invalidate();
    154         mContextView.showOverflowMenu();
    155     }
    156 
    157     public boolean isUiFocusable() {
    158         return mFocusable;
    159     }
    160 }
    161