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      1 /*
      2  * Copyright (C) 2008 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.systemui.statusbar.policy;
     18 
     19 import android.app.ActivityManager;
     20 import android.content.Context;
     21 import android.content.res.TypedArray;
     22 import android.os.RemoteException;
     23 import android.util.AttributeSet;
     24 import android.util.Slog;
     25 import android.view.View;
     26 import android.widget.ImageView;
     27 
     28 import com.android.systemui.R;
     29 
     30 public class CompatModeButton extends ImageView {
     31     private static final boolean DEBUG = false;
     32     private static final String TAG = "StatusBar.CompatModeButton";
     33 
     34     private ActivityManager mAM;
     35 
     36     public CompatModeButton(Context context, AttributeSet attrs) {
     37         this(context, attrs, 0);
     38     }
     39 
     40     public CompatModeButton(Context context, AttributeSet attrs, int defStyle) {
     41         super(context, attrs);
     42 
     43         setClickable(true);
     44 
     45         mAM = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
     46 
     47         refresh();
     48     }
     49 
     50     public void refresh() {
     51         int mode = mAM.getFrontActivityScreenCompatMode();
     52         if (mode == ActivityManager.COMPAT_MODE_UNKNOWN) {
     53             // If in an unknown state, don't change.
     54             return;
     55         }
     56         final boolean vis = (mode != ActivityManager.COMPAT_MODE_NEVER
     57                           && mode != ActivityManager.COMPAT_MODE_ALWAYS);
     58         if (DEBUG) Slog.d(TAG, "compat mode is " + mode + "; icon will " + (vis ? "show" : "hide"));
     59         setVisibility(vis ? View.VISIBLE : View.GONE);
     60     }
     61 }
     62