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      1 // Copyright (c) 2012 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 "content/app/android/content_main.h"
      6 
      7 #include "base/at_exit.h"
      8 #include "base/base_switches.h"
      9 #include "base/command_line.h"
     10 #include "base/debug/trace_event.h"
     11 #include "base/lazy_instance.h"
     12 #include "content/public/app/content_main.h"
     13 #include "content/public/app/content_main_delegate.h"
     14 #include "content/public/app/content_main_runner.h"
     15 #include "content/public/common/content_switches.h"
     16 #include "jni/ContentMain_jni.h"
     17 
     18 using base::LazyInstance;
     19 
     20 namespace content {
     21 
     22 namespace {
     23 LazyInstance<scoped_ptr<ContentMainRunner> > g_content_runner =
     24     LAZY_INSTANCE_INITIALIZER;
     25 
     26 LazyInstance<scoped_ptr<ContentMainDelegate> > g_content_main_delegate =
     27     LAZY_INSTANCE_INITIALIZER;
     28 
     29 }  // namespace
     30 
     31 static void InitApplicationContext(JNIEnv* env, jclass clazz, jobject context) {
     32   base::android::ScopedJavaLocalRef<jobject> scoped_context(env, context);
     33   base::android::InitApplicationContext(env, scoped_context);
     34 }
     35 
     36 static jint Start(JNIEnv* env, jclass clazz) {
     37   TRACE_EVENT0("startup", "content::Start");
     38 
     39   // On Android we can have multiple requests to start the browser in process
     40   // simultaneously. If we get an asynchonous request followed by a synchronous
     41   // request then we have to call this a second time to finish starting the
     42   // browser synchronously.
     43   if (!g_content_runner.Get().get()) {
     44     ContentMainParams params(g_content_main_delegate.Get().get());
     45     g_content_runner.Get().reset(ContentMainRunner::Create());
     46     g_content_runner.Get()->Initialize(params);
     47   }
     48   return g_content_runner.Get()->Run();
     49 }
     50 
     51 void SetContentMainDelegate(ContentMainDelegate* delegate) {
     52   DCHECK(!g_content_main_delegate.Get().get());
     53   g_content_main_delegate.Get().reset(delegate);
     54 }
     55 
     56 bool RegisterContentMain(JNIEnv* env) {
     57   return RegisterNativesImpl(env);
     58 }
     59 
     60 }  // namespace content
     61