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      1 /*
      2  * Copyright (C) 2017 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.server.power;
     18 
     19 import android.content.Intent;
     20 import android.os.IPowerManager;
     21 import android.os.RemoteException;
     22 import android.os.ShellCommand;
     23 
     24 import java.io.PrintWriter;
     25 
     26 class PowerManagerShellCommand extends ShellCommand {
     27     private static final int LOW_POWER_MODE_ON = 1;
     28 
     29     final IPowerManager mInterface;
     30 
     31     PowerManagerShellCommand(IPowerManager service) {
     32         mInterface = service;
     33     }
     34 
     35     @Override
     36     public int onCommand(String cmd) {
     37         if (cmd == null) {
     38             return handleDefaultCommands(cmd);
     39         }
     40 
     41         final PrintWriter pw = getOutPrintWriter();
     42         try {
     43             switch(cmd) {
     44                 case "set-mode":
     45                     return runSetMode();
     46                 default:
     47                     return handleDefaultCommands(cmd);
     48             }
     49         } catch (RemoteException e) {
     50             pw.println("Remote exception: " + e);
     51         }
     52         return -1;
     53     }
     54 
     55     private int runSetMode() throws RemoteException {
     56         final PrintWriter pw = getOutPrintWriter();
     57         int mode = -1;
     58         try {
     59             mode = Integer.parseInt(getNextArgRequired());
     60         } catch (RuntimeException ex) {
     61             pw.println("Error: " + ex.toString());
     62             return -1;
     63         }
     64         mInterface.setPowerSaveMode(mode == LOW_POWER_MODE_ON);
     65         return 0;
     66     }
     67 
     68     @Override
     69     public void onHelp() {
     70         final PrintWriter pw = getOutPrintWriter();
     71         pw.println("Power manager (power) commands:");
     72         pw.println("  help");
     73         pw.println("    Print this help text.");
     74         pw.println("");
     75         pw.println("  set-mode MODE");
     76         pw.println("    sets the power mode of the device to MODE.");
     77         pw.println("    1 turns low power mode on and 0 turns low power mode off.");
     78         pw.println();
     79         Intent.printIntentArgsHelp(pw , "");
     80     }
     81 }
     82