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 ActiveScriptController;
  42 class BookmarkAppHelper;
  43 class Extension;
  44 class LocationBarController;
  45 class WebstoreInlineInstallerFactory;
  46
  47 // Per-tab extension helper. Also handles non-extension apps.
  48 class TabHelper : public content::WebContentsObserver,
  49                   public extensions::ExtensionFunctionDispatcher::Delegate,
  50                   public base::SupportsWeakPtr<TabHelper>,
  51                   public content::NotificationObserver,
  52                   public content::WebContentsUserData<TabHelper> {
  53  public:
  54   virtual ~TabHelper();
  55
  56   void CreateApplicationShortcuts();
  57   void CreateHostedAppFromWebContents();
  58   bool CanCreateApplicationShortcuts() const;
  59   bool CanCreateBookmarkApp() const;
  60
  61   void UpdateShortcutOnLoadComplete() {
  62     update_shortcut_on_load_complete_ = true;
  63   }
  64
  65   // ScriptExecutionObserver::Delegate
  66   virtual void AddScriptExecutionObserver(ScriptExecutionObserver* observer);
  67   virtual void RemoveScriptExecutionObserver(ScriptExecutionObserver* observer);
  68
  69   // App extensions ------------------------------------------------------------
  70
  71   // Sets the extension denoting this as an app. If |extension| is non-null this
  72   // tab becomes an app-tab. WebContents does not listen for unload events for
  73   // the extension. It's up to consumers of WebContents to do that.
  74   //
  75   // NOTE: this should only be manipulated before the tab is added to a browser.
  76   // TODO(sky): resolve if this is the right way to identify an app tab. If it
  77   // is, than this should be passed in the constructor.
  78   void SetExtensionApp(const Extension* extension);
  79
  80   // Convenience for setting the app extension by id. This does nothing if
  81   // |extension_app_id| is empty, or an extension can't be found given the
  82   // specified id.
  83   void SetExtensionAppById(const std::string& extension_app_id);
  84
  85   // Set just the app icon, used by panels created by an extension.
  86   void SetExtensionAppIconById(const std::string& extension_app_id);
  87
  88   const Extension* extension_app() const { return extension_app_; }
  89   bool is_app() const { return extension_app_ != NULL; }
  90   const WebApplicationInfo& web_app_info() const {
  91     return web_app_info_;
  92   }
  93
  94   // If an app extension has been explicitly set for this WebContents its icon
  95   // is returned.
  96   //
  97   // NOTE: the returned icon is larger than 16x16 (its size is
  98   // extension_misc::EXTENSION_ICON_SMALLISH).
  99   SkBitmap* GetExtensionAppIcon();
 100
 101   ScriptExecutor* script_executor() {
 102     return script_executor_.get();
 103   }
 104
 105   LocationBarController* location_bar_controller() {
 106     return location_bar_controller_.get();
 107   }
 108
 109   ActiveScriptController* active_script_controller() {
 110     return active_script_controller_.get();
 111   }
 112
 113   ActiveTabPermissionGranter* active_tab_permission_granter() {
 114     return active_tab_permission_granter_.get();
 115   }
 116
 117   // Sets a non-extension app icon associated with WebContents and fires an
 118   // INVALIDATE_TYPE_TITLE navigation state change to trigger repaint of title.
 119   void SetAppIcon(const SkBitmap& app_icon);
 120
 121   // Sets the factory used to create inline webstore item installers.
 122   // Used for testing. Takes ownership of the factory instance.
 123   void SetWebstoreInlineInstallerFactoryForTests(
 124       WebstoreInlineInstallerFactory* factory);
 125
 126  private:
 127   // Different types of action when web app info is available.
 128   // OnDidGetApplicationInfo uses this to dispatch calls.
 129   enum WebAppAction {
 130     NONE,               // No action at all.
 131     CREATE_SHORTCUT,    // Bring up create application shortcut dialog.
 132     CREATE_HOSTED_APP,  // Create and install a hosted app.
 133     UPDATE_SHORTCUT     // Update icon for app shortcut.
 134   };
 135
 136   explicit TabHelper(content::WebContents* web_contents);
 137   friend class content::WebContentsUserData<TabHelper>;
 138
 139   // Displays UI for completion of creating a bookmark hosted app.
 140   void FinishCreateBookmarkApp(const extensions::Extension* extension,
 141                                const WebApplicationInfo& web_app_info);
 142
 143   // content::WebContentsObserver overrides.
 144   virtual void RenderViewCreated(
 145       content::RenderViewHost* render_view_host) override;
 146   virtual void DidNavigateMainFrame(
 147       const content::LoadCommittedDetails& details,
 148       const content::FrameNavigateParams& params) override;
 149   virtual bool OnMessageReceived(const IPC::Message& message) override;
 150   virtual bool OnMessageReceived(
 151       const IPC::Message& message,
 152       content::RenderFrameHost* render_frame_host) override;
 153   virtual void DidCloneToNewWebContents(
 154       content::WebContents* old_web_contents,
 155       content::WebContents* new_web_contents) override;
 156
 157   // extensions::ExtensionFunctionDispatcher::Delegate overrides.
 158   virtual extensions::WindowController* GetExtensionWindowController()
 159       const override;
 160   virtual content::WebContents* GetAssociatedWebContents() const override;
 161
 162   // Message handlers.
 163   void OnDidGetWebApplicationInfo(const WebApplicationInfo& info);
 164   void OnInlineWebstoreInstall(int install_id,
 165                                int return_route_id,
 166                                const std::string& webstore_item_id,
 167                                const GURL& requestor_url,
 168                                int listeners_mask);
 169   void OnGetAppInstallState(const GURL& requestor_url,
 170                             int return_route_id,
 171                             int callback_id);
 172   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 173   void OnContentScriptsExecuting(
 174       const ScriptExecutionObserver::ExecutingScriptsMap& extension_ids,
 175       const GURL& on_url);
 176   void OnWatchedPageChange(const std::vector<std::string>& css_selectors);
 177   void OnDetailedConsoleMessageAdded(const base::string16& message,
 178                                      const base::string16& source,
 179                                      const StackTrace& stack_trace,
 180                                      int32 severity_level);
 181
 182   // App extensions related methods:
 183
 184   // Resets app_icon_ and if |extension| is non-null uses ImageLoader to load
 185   // the extension's image asynchronously.
 186   void UpdateExtensionAppIcon(const Extension* extension);
 187
 188   const Extension* GetExtension(const std::string& extension_app_id);
 189
 190   void OnImageLoaded(const gfx::Image& image);
 191
 192   // WebstoreStandaloneInstaller::Callback.
 193   virtual void OnInlineInstallComplete(int install_id,
 194                                        int return_route_id,
 195                                        bool success,
 196                                        const std::string& error,
 197                                        webstore_install::Result result);
 198
 199   // content::NotificationObserver.
 200   virtual void Observe(int type,
 201                        const content::NotificationSource& source,
 202                        const content::NotificationDetails& details) override;
 203
 204   // Requests application info for the specified page. This is an asynchronous
 205   // request. The delegate is notified by way of OnDidGetApplicationInfo when
 206   // the data is available.
 207   void GetApplicationInfo(WebAppAction action);
 208
 209   // Sends our tab ID to |render_view_host|.
 210   void SetTabId(content::RenderViewHost* render_view_host);
 211
 212   // Data for app extensions ---------------------------------------------------
 213
 214   // Our content script observers. Declare at top so that it will outlive all
 215   // other members, since they might add themselves as observers.
 216   ObserverList<ScriptExecutionObserver> script_execution_observers_;
 217
 218   // If non-null this tab is an app tab and this is the extension the tab was
 219   // created for.
 220   const Extension* extension_app_;
 221
 222   // Icon for extension_app_ (if non-null) or a manually-set icon for
 223   // non-extension apps.
 224   SkBitmap extension_app_icon_;
 225
 226   // Process any extension messages coming from the tab.
 227   extensions::ExtensionFunctionDispatcher extension_function_dispatcher_;
 228
 229   // Cached web app info data.
 230   WebApplicationInfo web_app_info_;
 231
 232   // Which deferred action to perform when OnDidGetApplicationInfo is notified
 233   // from a WebContents.
 234   WebAppAction pending_web_app_action_;
 235
 236   // Which page id was active when the GetApplicationInfo request was sent, for
 237   // verification when the reply returns.
 238   int32 last_committed_page_id_;
 239
 240   // Whether to trigger an update when the page load completes.
 241   bool update_shortcut_on_load_complete_;
 242
 243   content::NotificationRegistrar registrar_;
 244
 245   scoped_ptr<ScriptExecutor> script_executor_;
 246
 247   scoped_ptr<LocationBarController> location_bar_controller_;
 248
 249   scoped_ptr<ActiveScriptController> active_script_controller_;
 250
 251   scoped_ptr<ActiveTabPermissionGranter> active_tab_permission_granter_;
 252
 253   scoped_ptr<BookmarkAppHelper> bookmark_app_helper_;
 254
 255   Profile* profile_;
 256
 257   // Creates WebstoreInlineInstaller instances for inline install triggers.
 258   scoped_ptr<WebstoreInlineInstallerFactory> webstore_inline_installer_factory_;
 259
 260   // Vend weak pointers that can be invalidated to stop in-progress loads.
 261   base::WeakPtrFactory<TabHelper> image_loader_ptr_factory_;
 262
 263   DISALLOW_COPY_AND_ASSIGN(TabHelper);
 264 };
 265
 266 }  // namespace extensions
 267
 268 #endif  // CHROME_BROWSER_EXTENSIONS_TAB_HELPER_H_