Add new certificateProvider extension API.
[chromium-blink-merge.git] / chrome / browser / android / webapps / add_to_homescreen_data_fetcher.h
blob3b40f042a17006ae1d795cd777caebee452772fa
1 // Copyright 2015 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.
5 #ifndef CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
6 #define CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
8 #include "base/basictypes.h"
9 #include "base/task/cancelable_task_tracker.h"
10 #include "base/timer/timer.h"
11 #include "chrome/browser/android/shortcut_info.h"
12 #include "chrome/common/web_application_info.h"
13 #include "components/favicon_base/favicon_types.h"
14 #include "content/public/browser/web_contents_observer.h"
15 #include "content/public/common/manifest.h"
17 namespace content {
18 class WebContents;
19 } // namespace content
21 namespace IPC {
22 class Message;
25 class GURL;
27 // Aysnchronously fetches and processes data needed to create a shortcut for an
28 // Android Home screen launcher.
30 // Because of the various asynchronous calls made by this class, it is
31 // refcounted to prevent the class from being prematurely deleted. If the
32 // pointer to the ShortcutHelper becomes invalid, the pipeline should kill
33 // itself.
34 class AddToHomescreenDataFetcher
35 : public base::RefCounted<AddToHomescreenDataFetcher>,
36 public content::WebContentsObserver {
37 public:
38 class Observer {
39 public:
40 // Called when the title of the page is available.
41 virtual void OnUserTitleAvailable(const base::string16& title) = 0;
43 // Converts the icon into one that can be used on the Android Home screen.
44 virtual SkBitmap FinalizeLauncherIcon(const SkBitmap& icon,
45 const GURL& url) = 0;
47 // Called when all the data needed to create a shortcut is available.
48 virtual void OnDataAvailable(const ShortcutInfo& info,
49 const SkBitmap& icon) = 0;
52 // Initialize the fetcher by requesting the information about the page to the
53 // renderer process. The initialization is asynchronous and
54 // OnDidGetWebApplicationInfo is expected to be called when finished.
55 AddToHomescreenDataFetcher(content::WebContents* web_contents,
56 int ideal_splash_image_size_in_dp,
57 int ideal_icon_size_in_dp,
58 Observer* observer);
60 // Called to fetch the splash screen image to be stored for the webapp with
61 // the specified |id|.
62 void FetchSplashScreenImage(const std::string& id);
64 // IPC message received when the initialization is finished.
65 void OnDidGetWebApplicationInfo(const WebApplicationInfo& web_app_info);
67 // Called when the Manifest has been parsed, or if no Manifest was found.
68 void OnDidGetManifest(const content::Manifest& manifest);
70 // Accessors, etc.
71 void set_weak_observer(Observer* observer) { weak_observer_ = observer; }
72 bool is_ready() { return is_ready_; }
73 ShortcutInfo& shortcut_info() { return shortcut_info_; }
74 const SkBitmap& shortcut_icon() { return shortcut_icon_; }
76 // WebContentsObserver
77 bool OnMessageReceived(const IPC::Message& message) override;
79 private:
80 ~AddToHomescreenDataFetcher() override;
82 // Grabs the favicon for the current URL.
83 void FetchFavicon();
84 void OnFaviconFetched(
85 const favicon_base::FaviconRawBitmapResult& bitmap_result);
87 // Creates the launcher icon from the given bitmap.
88 void CreateLauncherIcon(
89 const favicon_base::FaviconRawBitmapResult& bitmap_result);
91 // Callback run after an attempt to download manifest icon has been made. May
92 // kick off the download of a favicon if it failed (i.e. the bitmap is empty).
93 void OnManifestIconFetched(const SkBitmap& icon);
95 // Notifies the observer that the shortcut data is all available.
96 void NotifyObserver(const SkBitmap& icon);
98 Observer* weak_observer_;
100 bool is_waiting_for_web_application_info_;
101 bool is_icon_saved_;
102 bool is_ready_;
103 base::Timer icon_timeout_timer_;
104 ShortcutInfo shortcut_info_;
105 GURL splash_screen_url_;
107 // The icon must only be set on the UI thread for thread safety.
108 SkBitmap shortcut_icon_;
109 base::CancelableTaskTracker favicon_task_tracker_;
111 const int ideal_splash_image_size_in_dp_;
112 const int ideal_icon_size_in_dp_;
114 friend class base::RefCounted<AddToHomescreenDataFetcher>;
115 DISALLOW_COPY_AND_ASSIGN(AddToHomescreenDataFetcher);
118 #endif // CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_