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      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 "base/prefs/pref_service.h"
      6 #include "chrome/browser/android/prerender_condition_platform.h"
      7 #include "chrome/browser/browser_process.h"
      8 #include "chrome/browser/profiles/profile_manager.h"
      9 #include "chrome/common/pref_names.h"
     10 
     11 namespace android {
     12 
     13 namespace {
     14 
     15 const char kAllowPrerender[] = "allow-prerender";
     16 
     17 class BooleanWrapper : public base::SupportsUserData::Data {
     18  public:
     19   explicit BooleanWrapper(bool b) : m_b(b) { }
     20   virtual ~BooleanWrapper() { }
     21 
     22   operator bool() const { return m_b; }
     23  private:
     24   bool m_b;
     25   DISALLOW_COPY_AND_ASSIGN(BooleanWrapper);
     26 };
     27 
     28 }  // namespace
     29 
     30 PrerenderConditionPlatform::PrerenderConditionPlatform(
     31     content::BrowserContext* context)
     32     : context_(context) {}
     33 
     34 PrerenderConditionPlatform::~PrerenderConditionPlatform() {}
     35 
     36 bool PrerenderConditionPlatform::CanPrerender() const {
     37   base::SupportsUserData::Data* data = context_->GetUserData(kAllowPrerender);
     38   if (!data)
     39     return true;
     40   BooleanWrapper* b = static_cast<BooleanWrapper*>(data);
     41   return *b;
     42 }
     43 
     44 void PrerenderConditionPlatform::SetEnabled(content::BrowserContext* context,
     45                                             bool enabled) {
     46   BooleanWrapper* wrapper = new BooleanWrapper(enabled);
     47   context->SetUserData(kAllowPrerender, wrapper);
     48 }
     49 
     50 }  // namespace android
     51