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