| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_ |
| #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_ |
| #pragma once |
| |
| #include "content/browser/tab_contents/tab_contents_observer.h" |
| #include "chrome/browser/extensions/image_loading_tracker.h" |
| #include "chrome/common/web_apps.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| |
| class Extension; |
| class TabContentsWrapper; |
| struct WebApplicationInfo; |
| |
| // Per-tab extension helper. Also handles non-extension apps. |
| class ExtensionTabHelper : public TabContentsObserver, |
| public ImageLoadingTracker::Observer { |
| public: |
| explicit ExtensionTabHelper(TabContentsWrapper* wrapper); |
| virtual ~ExtensionTabHelper(); |
| |
| // Copies the internal state from another ExtensionTabHelper. |
| void CopyStateFrom(const ExtensionTabHelper& source); |
| |
| // Call this after updating a page action to notify clients about the changes. |
| void PageActionStateChanged(); |
| |
| // Requests application info for the specified page. This is an asynchronous |
| // request. The delegate is notified by way of OnDidGetApplicationInfo when |
| // the data is available. |
| void GetApplicationInfo(int32 page_id); |
| |
| // App extensions ------------------------------------------------------------ |
| |
| // Sets the extension denoting this as an app. If |extension| is non-null this |
| // tab becomes an app-tab. TabContents does not listen for unload events for |
| // the extension. It's up to consumers of TabContents to do that. |
| // |
| // NOTE: this should only be manipulated before the tab is added to a browser. |
| // TODO(sky): resolve if this is the right way to identify an app tab. If it |
| // is, than this should be passed in the constructor. |
| void SetExtensionApp(const Extension* extension); |
| |
| // Convenience for setting the app extension by id. This does nothing if |
| // |extension_app_id| is empty, or an extension can't be found given the |
| // specified id. |
| void SetExtensionAppById(const std::string& extension_app_id); |
| |
| const Extension* extension_app() const { return extension_app_; } |
| bool is_app() const { return extension_app_ != NULL; } |
| const WebApplicationInfo& web_app_info() const { |
| return web_app_info_; |
| } |
| |
| // If an app extension has been explicitly set for this TabContents its icon |
| // is returned. |
| // |
| // NOTE: the returned icon is larger than 16x16 (its size is |
| // Extension::EXTENSION_ICON_SMALLISH). |
| SkBitmap* GetExtensionAppIcon(); |
| |
| TabContents* tab_contents() const { |
| return TabContentsObserver::tab_contents(); |
| } |
| |
| // Sets a non-extension app icon associated with TabContents and fires an |
| // INVALIDATE_TITLE navigation state change to trigger repaint of title. |
| void SetAppIcon(const SkBitmap& app_icon); |
| |
| private: |
| // TabContentsObserver overrides. |
| virtual void DidNavigateMainFramePostCommit( |
| const NavigationController::LoadCommittedDetails& details, |
| const ViewHostMsg_FrameNavigate_Params& params) OVERRIDE; |
| virtual bool OnMessageReceived(const IPC::Message& message); |
| |
| // Message handlers. |
| void OnDidGetApplicationInfo(int32 page_id, const WebApplicationInfo& info); |
| void OnInstallApplication(const WebApplicationInfo& info); |
| |
| // App extensions related methods: |
| |
| // Resets app_icon_ and if |extension| is non-null creates a new |
| // ImageLoadingTracker to load the extension's image. |
| void UpdateExtensionAppIcon(const Extension* extension); |
| |
| // ImageLoadingTracker::Observer. |
| virtual void OnImageLoaded(SkBitmap* image, const ExtensionResource& resource, |
| int index); |
| |
| // Data for app extensions --------------------------------------------------- |
| |
| // If non-null this tab is an app tab and this is the extension the tab was |
| // created for. |
| const Extension* extension_app_; |
| |
| // Icon for extension_app_ (if non-null) or a manually-set icon for |
| // non-extension apps. |
| SkBitmap extension_app_icon_; |
| |
| // Used for loading extension_app_icon_. |
| scoped_ptr<ImageLoadingTracker> extension_app_image_loader_; |
| |
| // Cached web app info data. |
| WebApplicationInfo web_app_info_; |
| |
| TabContentsWrapper* wrapper_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExtensionTabHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_ |