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