src/chromecast/shell/android/apk/src/org/chromium/chromecast/shell/CastBrowserHelper.java

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.chromecast.shell;
   6
   7 import android.app.Activity;
   8 import android.content.Context;
   9 import android.content.Intent;
  10 import android.os.Build;
  11 import android.os.Debug;
  12 import android.util.Log;
  13
  14 import org.chromium.base.BaseSwitches;
  15 import org.chromium.base.CommandLine;
  16 import org.chromium.base.library_loader.LibraryLoader;
  17 import org.chromium.base.library_loader.ProcessInitException;
  18 import org.chromium.content.browser.BrowserStartupController;
  19 import org.chromium.content.browser.DeviceUtils;
  20 import org.chromium.content.common.ContentSwitches;
  21
  22 /**
  23  * Static, one-time initialization for the browser process.
  24  */
  25 public class CastBrowserHelper {
  26     private static final String TAG = "CastBrowserHelper";
  27
  28     public static final String COMMAND_LINE_FILE = "/data/local/tmp/castshell-command-line";
  29     public static final String COMMAND_LINE_ARGS_KEY = "commandLineArgs";
  30
  31     private static boolean sIsBrowserInitialized = false;
  32
  33     /**
  34      * Starts the browser process synchronously, returning success or failure. If the browser has
  35      * already started, immediately returns true without performing any more initialization.
  36      * This may only be called on the UI thread.
  37      *
  38      * @return whether or not the process started successfully
  39      */
  40     public static boolean initializeBrowser(Context context) {
  41         if (sIsBrowserInitialized) return true;
  42
  43         Log.d(TAG, "Performing one-time browser initialization");
  44
  45         // Initializing the command line must occur before loading the library.
  46         if (!CommandLine.isInitialized()) {
  47             if (allowCommandLineImport()) {
  48                 Log.d(TAG, "Initializing command line from " + COMMAND_LINE_FILE);
  49                 CommandLine.initFromFile(COMMAND_LINE_FILE);
  50             } else {
  51                 CommandLine.init(null);
  52             }
  53
  54             if (context instanceof Activity) {
  55                 Intent launchingIntent = ((Activity) context).getIntent();
  56                 String[] commandLineParams = getCommandLineParamsFromIntent(launchingIntent);
  57                 if (commandLineParams != null) {
  58                     CommandLine.getInstance().appendSwitchesAndArguments(commandLineParams);
  59                 }
  60             }
  61         }
  62
  63         CommandLine.getInstance().appendSwitchWithValue(
  64                 ContentSwitches.FORCE_DEVICE_SCALE_FACTOR, "1");
  65
  66         waitForDebuggerIfNeeded();
  67
  68         DeviceUtils.addDeviceSpecificUserAgentSwitch(context);
  69
  70         try {
  71             LibraryLoader.ensureInitialized();
  72
  73             Log.d(TAG, "Loading BrowserStartupController...");
  74             BrowserStartupController.get(context).startBrowserProcessesSync(false);
  75
  76             sIsBrowserInitialized = true;
  77             return true;
  78         } catch (ProcessInitException e) {
  79             Log.e(TAG, "Unable to launch browser process.", e);
  80             return false;
  81         }
  82     }
  83
  84     private static boolean allowCommandLineImport() {
  85       return !Build.TYPE.equals("user");
  86     }
  87
  88     private static String[] getCommandLineParamsFromIntent(Intent intent) {
  89         return intent != null ? intent.getStringArrayExtra(COMMAND_LINE_ARGS_KEY) : null;
  90     }
  91
  92     private static void waitForDebuggerIfNeeded() {
  93         if (!CommandLine.getInstance().hasSwitch(BaseSwitches.WAIT_FOR_JAVA_DEBUGGER)) {
  94             return;
  95         }
  96         Log.e(TAG, "Waiting for Java debugger to connect...");
  97         Debug.waitForDebugger();
  98         Log.e(TAG, "Java debugger connected. Resuming execution.");
  99     }
 100 }