chrome/browser/extensions/tab_helper.h

   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 #ifndef CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_
   7
   8 #include <set>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/observer_list.h"
  16 #include "chrome/browser/extensions/active_tab_permission_granter.h"
  17 #include "chrome/common/extensions/webstore_install_result.h"
  18 #include "chrome/common/web_application_info.h"
  19 #include "content/public/browser/notification_observer.h"
  20 #include "content/public/browser/notification_registrar.h"
  21 #include "content/public/browser/web_contents_observer.h"
  22 #include "content/public/browser/web_contents_user_data.h"
  23 #include "extensions/browser/extension_function_dispatcher.h"
  24 #include "extensions/browser/script_execution_observer.h"
  25 #include "extensions/browser/script_executor.h"
  26 #include "extensions/common/stack_frame.h"
  27 #include "third_party/skia/include/core/SkBitmap.h"
  28
  29 class FaviconDownloader;
  30
  31 namespace content {
  32 struct LoadCommittedDetails;
  33 class RenderFrameHost;
  34 }
  35
  36 namespace gfx {
  37 class Image;
  38 }
  39
  40 namespace extensions {
  41 class BookmarkAppHelper;
  42 class Extension;
  43 class LocationBarController;
  44 class WebstoreInlineInstallerFactory;
  45
  46 // Per-tab extension helper. Also handles non-extension apps.
  47 class TabHelper : public content::WebContentsObserver,
  48                   public extensions::ExtensionFunctionDispatcher::Delegate,
  49                   public base::SupportsWeakPtr<TabHelper>,
  50                   public content::NotificationObserver,
  51                   public content::WebContentsUserData<TabHelper> {
  52  public:
  53   virtual ~TabHelper();
  54
  55   void CreateApplicationShortcuts();
  56   void CreateHostedAppFromWebContents();
  57   bool CanCreateApplicationShortcuts() const;
  58   bool CanCreateBookmarkApp() const;
  59
  60   void UpdateShortcutOnLoadComplete() {
  61     update_shortcut_on_load_complete_ = true;
  62   }
  63
  64   // ScriptExecutionObserver::Delegate
  65   virtual void AddScriptExecutionObserver(ScriptExecutionObserver* observer);
  66   virtual void RemoveScriptExecutionObserver(ScriptExecutionObserver* observer);
  67
  68   // App extensions ------------------------------------------------------------
  69
  70   // Sets the extension denoting this as an app. If |extension| is non-null this
  71   // tab becomes an app-tab. WebContents does not listen for unload events for
  72   // the extension. It's up to consumers of WebContents to do that.
  73   //
  74   // NOTE: this should only be manipulated before the tab is added to a browser.
  75   // TODO(sky): resolve if this is the right way to identify an app tab. If it
  76   // is, than this should be passed in the constructor.
  77   void SetExtensionApp(const Extension* extension);
  78
  79   // Convenience for setting the app extension by id. This does nothing if
  80   // |extension_app_id| is empty, or an extension can't be found given the
  81   // specified id.
  82   void SetExtensionAppById(const std::string& extension_app_id);
  83
  84   // Set just the app icon, used by panels created by an extension.
  85   void SetExtensionAppIconById(const std::string& extension_app_id);
  86
  87   const Extension* extension_app() const { return extension_app_; }
  88   bool is_app() const { return extension_app_ != NULL; }
  89   const WebApplicationInfo& web_app_info() const {
  90     return web_app_info_;
  91   }
  92
  93   // If an app extension has been explicitly set for this WebContents its icon
  94   // is returned.
  95   //
  96   // NOTE: the returned icon is larger than 16x16 (its size is
  97   // extension_misc::EXTENSION_ICON_SMALLISH).
  98   SkBitmap* GetExtensionAppIcon();
  99
 100   content::WebContents* web_contents() const {
 101     return content::WebContentsObserver::web_contents();
 102   }
 103
 104   ScriptExecutor* script_executor() {
 105     return script_executor_.get();
 106   }
 107
 108   LocationBarController* location_bar_controller() {
 109     return location_bar_controller_.get();
 110   }
 111
 112   ActiveTabPermissionGranter* active_tab_permission_granter() {
 113     return active_tab_permission_granter_.get();
 114   }
 115
 116   // Sets a non-extension app icon associated with WebContents and fires an
 117   // INVALIDATE_TYPE_TITLE navigation state change to trigger repaint of title.
 118   void SetAppIcon(const SkBitmap& app_icon);
 119
 120   // Sets the factory used to create inline webstore item installers.
 121   // Used for testing. Takes ownership of the factory instance.
 122   void SetWebstoreInlineInstallerFactoryForTests(
 123       WebstoreInlineInstallerFactory* factory);
 124
 125  private:
 126   // Different types of action when web app info is available.
 127   // OnDidGetApplicationInfo uses this to dispatch calls.
 128   enum WebAppAction {
 129     NONE,               // No action at all.
 130     CREATE_SHORTCUT,    // Bring up create application shortcut dialog.
 131     CREATE_HOSTED_APP,  // Create and install a hosted app.
 132     UPDATE_SHORTCUT     // Update icon for app shortcut.
 133   };
 134
 135   explicit TabHelper(content::WebContents* web_contents);
 136   friend class content::WebContentsUserData<TabHelper>;
 137
 138   // Displays UI for completion of creating a bookmark hosted app.
 139   void FinishCreateBookmarkApp(const extensions::Extension* extension,
 140                                const WebApplicationInfo& web_app_info);
 141
 142   // content::WebContentsObserver overrides.
 143   virtual void RenderViewCreated(
 144       content::RenderViewHost* render_view_host) OVERRIDE;
 145   virtual void DidNavigateMainFrame(
 146       const content::LoadCommittedDetails& details,
 147       const content::FrameNavigateParams& params) OVERRIDE;
 148   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 149   virtual bool OnMessageReceived(
 150       const IPC::Message& message,
 151       content::RenderFrameHost* render_frame_host) OVERRIDE;
 152   virtual void DidCloneToNewWebContents(
 153       content::WebContents* old_web_contents,
 154       content::WebContents* new_web_contents) OVERRIDE;
 155
 156   // extensions::ExtensionFunctionDispatcher::Delegate overrides.
 157   virtual extensions::WindowController* GetExtensionWindowController()
 158       const OVERRIDE;
 159   virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
 160
 161   // Message handlers.
 162   void OnDidGetApplicationInfo(const WebApplicationInfo& info);
 163   void OnInlineWebstoreInstall(int install_id,
 164                                int return_route_id,
 165                                const std::string& webstore_item_id,
 166                                const GURL& requestor_url,
 167                                int listeners_mask);
 168   void OnGetAppInstallState(const GURL& requestor_url,
 169                             int return_route_id,
 170                             int callback_id);
 171   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 172   void OnContentScriptsExecuting(
 173       const ScriptExecutionObserver::ExecutingScriptsMap& extension_ids,
 174       const GURL& on_url);
 175   void OnWatchedPageChange(const std::vector<std::string>& css_selectors);
 176   void OnDetailedConsoleMessageAdded(const base::string16& message,
 177                                      const base::string16& source,
 178                                      const StackTrace& stack_trace,
 179                                      int32 severity_level);
 180
 181   // App extensions related methods:
 182
 183   // Resets app_icon_ and if |extension| is non-null uses ImageLoader to load
 184   // the extension's image asynchronously.
 185   void UpdateExtensionAppIcon(const Extension* extension);
 186
 187   const Extension* GetExtension(const std::string& extension_app_id);
 188
 189   void OnImageLoaded(const gfx::Image& image);
 190
 191   // WebstoreStandaloneInstaller::Callback.
 192   virtual void OnInlineInstallComplete(int install_id,
 193                                        int return_route_id,
 194                                        bool success,
 195                                        const std::string& error,
 196                                        webstore_install::Result result);
 197
 198   // content::NotificationObserver.
 199   virtual void Observe(int type,
 200                        const content::NotificationSource& source,
 201                        const content::NotificationDetails& details) OVERRIDE;
 202
 203   // Requests application info for the specified page. This is an asynchronous
 204   // request. The delegate is notified by way of OnDidGetApplicationInfo when
 205   // the data is available.
 206   void GetApplicationInfo(WebAppAction action);
 207
 208   // Sends our tab ID to |render_view_host|.
 209   void SetTabId(content::RenderViewHost* render_view_host);
 210
 211   // Data for app extensions ---------------------------------------------------
 212
 213   // Our content script observers. Declare at top so that it will outlive all
 214   // other members, since they might add themselves as observers.
 215   ObserverList<ScriptExecutionObserver> script_execution_observers_;
 216
 217   // If non-null this tab is an app tab and this is the extension the tab was
 218   // created for.
 219   const Extension* extension_app_;
 220
 221   // Icon for extension_app_ (if non-null) or a manually-set icon for
 222   // non-extension apps.
 223   SkBitmap extension_app_icon_;
 224
 225   // Process any extension messages coming from the tab.
 226   extensions::ExtensionFunctionDispatcher extension_function_dispatcher_;
 227
 228   // Cached web app info data.
 229   WebApplicationInfo web_app_info_;
 230
 231   // Which deferred action to perform when OnDidGetApplicationInfo is notified
 232   // from a WebContents.
 233   WebAppAction pending_web_app_action_;
 234
 235   // Which page id was active when the GetApplicationInfo request was sent, for
 236   // verification when the reply returns.
 237   int32 last_committed_page_id_;
 238
 239   // Whether to trigger an update when the page load completes.
 240   bool update_shortcut_on_load_complete_;
 241
 242   content::NotificationRegistrar registrar_;
 243
 244   scoped_ptr<ScriptExecutor> script_executor_;
 245
 246   scoped_ptr<LocationBarController> location_bar_controller_;
 247
 248   scoped_ptr<ActiveTabPermissionGranter> active_tab_permission_granter_;
 249
 250   scoped_ptr<BookmarkAppHelper> bookmark_app_helper_;
 251
 252   Profile* profile_;
 253
 254   // Vend weak pointers that can be invalidated to stop in-progress loads.
 255   base::WeakPtrFactory<TabHelper> image_loader_ptr_factory_;
 256
 257   // Creates WebstoreInlineInstaller instances for inline install triggers.
 258   scoped_ptr<WebstoreInlineInstallerFactory> webstore_inline_installer_factory_;
 259
 260   DISALLOW_COPY_AND_ASSIGN(TabHelper);
 261 };
 262
 263 }  // namespace extensions
 264
 265 #endif  // CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_