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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 "apps/app_load_service.h"
      6 
      7 #include "apps/app_load_service_factory.h"
      8 #include "apps/app_restore_service.h"
      9 #include "apps/launcher.h"
     10 #include "chrome/browser/extensions/extension_service.h"
     11 #include "chrome/browser/extensions/unpacked_installer.h"
     12 #include "chrome/browser/profiles/profile.h"
     13 #include "content/public/browser/notification_details.h"
     14 #include "content/public/browser/notification_service.h"
     15 #include "content/public/browser/notification_types.h"
     16 #include "extensions/browser/app_window/app_window_registry.h"
     17 #include "extensions/browser/extension_host.h"
     18 #include "extensions/browser/extension_prefs.h"
     19 #include "extensions/browser/extension_registry.h"
     20 #include "extensions/browser/extension_system.h"
     21 #include "extensions/browser/notification_types.h"
     22 #include "extensions/common/extension.h"
     23 
     24 using extensions::Extension;
     25 using extensions::ExtensionPrefs;
     26 using extensions::ExtensionSystem;
     27 
     28 namespace apps {
     29 
     30 AppLoadService::PostReloadAction::PostReloadAction()
     31     : action_type(LAUNCH),
     32       command_line(CommandLine::NO_PROGRAM) {
     33 }
     34 
     35 AppLoadService::AppLoadService(Profile* profile)
     36     : profile_(profile) {
     37   registrar_.Add(this,
     38                  extensions::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
     39                  content::NotificationService::AllSources());
     40   extensions::ExtensionRegistry::Get(profile_)->AddObserver(this);
     41 }
     42 
     43 AppLoadService::~AppLoadService() {
     44   extensions::ExtensionRegistry::Get(profile_)->RemoveObserver(this);
     45 }
     46 
     47 void AppLoadService::RestartApplication(const std::string& extension_id) {
     48   post_reload_actions_[extension_id].action_type = RESTART;
     49   ExtensionService* service = extensions::ExtensionSystem::Get(profile_)->
     50       extension_service();
     51   DCHECK(service);
     52   service->ReloadExtension(extension_id);
     53 }
     54 
     55 void AppLoadService::RestartApplicationIfRunning(
     56     const std::string& extension_id) {
     57   if (apps::AppRestoreService::Get(profile_)->IsAppRestorable(extension_id))
     58     RestartApplication(extension_id);
     59 }
     60 
     61 bool AppLoadService::LoadAndLaunch(const base::FilePath& extension_path,
     62                                    const CommandLine& command_line,
     63                                    const base::FilePath& current_dir) {
     64   ExtensionService* extension_service =
     65       ExtensionSystem::Get(profile_)->extension_service();
     66   std::string extension_id;
     67   if (!extensions::UnpackedInstaller::Create(extension_service)->
     68           LoadFromCommandLine(base::FilePath(extension_path), &extension_id)) {
     69     return false;
     70   }
     71 
     72   // Schedule the app to be launched once loaded.
     73   PostReloadAction& action = post_reload_actions_[extension_id];
     74   action.action_type = LAUNCH_WITH_COMMAND_LINE;
     75   action.command_line = command_line;
     76   action.current_dir = current_dir;
     77   return true;
     78 }
     79 
     80 // static
     81 AppLoadService* AppLoadService::Get(Profile* profile) {
     82   return apps::AppLoadServiceFactory::GetForProfile(profile);
     83 }
     84 
     85 void AppLoadService::Observe(int type,
     86                              const content::NotificationSource& source,
     87                              const content::NotificationDetails& details) {
     88   DCHECK_EQ(type, extensions::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING);
     89   extensions::ExtensionHost* host =
     90       content::Details<extensions::ExtensionHost>(details).ptr();
     91   const Extension* extension = host->extension();
     92   // It is possible for an extension to be unloaded before it stops loading.
     93   if (!extension)
     94     return;
     95   std::map<std::string, PostReloadAction>::iterator it =
     96       post_reload_actions_.find(extension->id());
     97   if (it == post_reload_actions_.end())
     98     return;
     99 
    100   switch (it->second.action_type) {
    101     case LAUNCH:
    102       LaunchPlatformApp(profile_, extension);
    103       break;
    104     case RESTART:
    105       RestartPlatformApp(profile_, extension);
    106       break;
    107     case LAUNCH_WITH_COMMAND_LINE:
    108       LaunchPlatformAppWithCommandLine(
    109           profile_, extension, it->second.command_line, it->second.current_dir);
    110       break;
    111     default:
    112       NOTREACHED();
    113   }
    114 
    115   post_reload_actions_.erase(it);
    116 }
    117 
    118 void AppLoadService::OnExtensionUnloaded(
    119     content::BrowserContext* browser_context,
    120     const Extension* extension,
    121     extensions::UnloadedExtensionInfo::Reason reason) {
    122   if (!extension->is_platform_app())
    123     return;
    124 
    125   extensions::ExtensionPrefs* extension_prefs =
    126       extensions::ExtensionPrefs::Get(browser_context);
    127   if (WasUnloadedForReload(extension->id(), reason) &&
    128       extension_prefs->IsActive(extension->id()) &&
    129       !HasPostReloadAction(extension->id())) {
    130     post_reload_actions_[extension->id()].action_type = LAUNCH;
    131   }
    132 }
    133 
    134 bool AppLoadService::WasUnloadedForReload(
    135     const extensions::ExtensionId& extension_id,
    136     const extensions::UnloadedExtensionInfo::Reason reason) {
    137   if (reason == extensions::UnloadedExtensionInfo::REASON_DISABLE) {
    138     ExtensionPrefs* prefs = ExtensionPrefs::Get(profile_);
    139     return (prefs->GetDisableReasons(extension_id) &
    140             Extension::DISABLE_RELOAD) != 0;
    141   }
    142   return false;
    143 }
    144 
    145 bool AppLoadService::HasPostReloadAction(const std::string& extension_id) {
    146   return post_reload_actions_.find(extension_id) != post_reload_actions_.end();
    147 }
    148 
    149 }  // namespace apps
    150