mojo/shell/android/mojo_main.cc

   1 // Copyright 2013 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 #include "mojo/shell/android/mojo_main.h"
   6
   7 #include "base/android/java_handler_thread.h"
   8 #include "base/android/jni_string.h"
   9 #include "base/at_exit.h"
  10 #include "base/bind.h"
  11 #include "base/command_line.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/logging.h"
  14 #include "base/macros.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "jni/MojoMain_jni.h"
  17 #include "mojo/application_manager/application_loader.h"
  18 #include "mojo/application_manager/application_manager.h"
  19 #include "mojo/shell/context.h"
  20 #include "mojo/shell/init.h"
  21 #include "ui/gl/gl_surface_egl.h"
  22
  23 using base::LazyInstance;
  24
  25 namespace mojo {
  26
  27 namespace {
  28
  29 LazyInstance<scoped_ptr<base::MessageLoop> > g_java_message_loop =
  30     LAZY_INSTANCE_INITIALIZER;
  31
  32 LazyInstance<scoped_ptr<shell::Context> > g_context =
  33     LAZY_INSTANCE_INITIALIZER;
  34
  35 LazyInstance<scoped_ptr<base::android::JavaHandlerThread> > g_shell_thread =
  36     LAZY_INSTANCE_INITIALIZER;
  37
  38 void RunShell(std::vector<GURL> app_urls) {
  39   shell::Context* context = g_context.Pointer()->get();
  40   context->Init();
  41   context->set_ui_loop(g_java_message_loop.Get().get());
  42   for (std::vector<GURL>::const_iterator it = app_urls.begin();
  43        it != app_urls.end(); ++it) {
  44     context->Run(*it);
  45   }
  46 }
  47
  48 }  // namespace
  49
  50 static void Init(JNIEnv* env, jclass clazz, jobject context) {
  51   base::android::ScopedJavaLocalRef<jobject> scoped_context(env, context);
  52
  53   base::android::InitApplicationContext(env, scoped_context);
  54
  55   base::CommandLine::Init(0, 0);
  56   mojo::shell::InitializeLogging();
  57
  58   // We want ~MessageLoop to happen prior to ~Context. Initializing
  59   // LazyInstances is akin to stack-allocating objects; their destructors
  60   // will be invoked first-in-last-out.
  61   shell::Context* shell_context = new shell::Context();
  62   g_context.Get().reset(shell_context);
  63   g_java_message_loop.Get().reset(new base::MessageLoopForUI);
  64   base::MessageLoopForUI::current()->Start();
  65
  66   // TODO(abarth): At which point should we switch to cross-platform
  67   // initialization?
  68
  69   gfx::GLSurface::InitializeOneOff();
  70 }
  71
  72 static void Start(JNIEnv* env, jclass clazz, jstring jurl) {
  73   std::vector<GURL> app_urls;
  74 #if defined(MOJO_SHELL_DEBUG_URL)
  75   app_urls.push_back(GURL(MOJO_SHELL_DEBUG_URL));
  76   // Sleep for 5 seconds to give the debugger a chance to attach.
  77   sleep(5);
  78 #else
  79   if (jurl)
  80     app_urls.push_back(GURL(base::android::ConvertJavaStringToUTF8(env, jurl)));
  81 #endif
  82
  83   g_shell_thread.Get().reset(
  84       new base::android::JavaHandlerThread("shell_thread"));
  85   g_shell_thread.Get()->Start();
  86   g_shell_thread.Get()->message_loop()->PostTask(
  87       FROM_HERE, base::Bind(&RunShell, app_urls));
  88 }
  89
  90 bool RegisterMojoMain(JNIEnv* env) {
  91   return RegisterNativesImpl(env);
  92 }
  93
  94 }  // namespace mojo