chrome/browser/chromeos/app_mode/kiosk_app_data.h

   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 #ifndef CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_
   6 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/files/file_path.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "chrome/browser/extensions/webstore_data_fetcher_delegate.h"
  15 #include "ui/gfx/image/image_skia.h"
  16 #include "url/gurl.h"
  17
  18 class Profile;
  19
  20 namespace extensions {
  21 class Extension;
  22 class WebstoreDataFetcher;
  23 }
  24
  25 namespace gfx {
  26 class Image;
  27 }
  28
  29 namespace net {
  30 class URLRequestContextGetter;
  31 }
  32
  33 namespace chromeos {
  34
  35 class KioskAppDataDelegate;
  36
  37 // Fetches an app's web store data and manages the cached info such as name
  38 // and icon.
  39 class KioskAppData : public base::SupportsWeakPtr<KioskAppData>,
  40                      public extensions::WebstoreDataFetcherDelegate {
  41  public:
  42   enum Status {
  43     STATUS_INIT,     // Data initialized with app id.
  44     STATUS_LOADING,  // Loading data from cache or web store.
  45     STATUS_LOADED,   // Data loaded.
  46     STATUS_ERROR,    // Failed to load data.
  47   };
  48
  49   KioskAppData(KioskAppDataDelegate* delegate,
  50                const std::string& app_id,
  51                const std::string& user_id,
  52                const GURL& update_url);
  53   ~KioskAppData() override;
  54
  55   // Loads app data from cache. If there is no cached data, fetches it
  56   // from web store.
  57   void Load();
  58
  59   // Clears locally cached data.
  60   void ClearCache();
  61
  62   // Loads app data from the app installed in the given profile.
  63   void LoadFromInstalledApp(Profile* profile, const extensions::Extension* app);
  64
  65   // Sets full path of the cache crx. The crx would be used to extract meta
  66   // data for private apps.
  67   void SetCachedCrx(const base::FilePath& crx_file);
  68
  69   // Returns true if web store data fetching is in progress.
  70   bool IsLoading() const;
  71
  72   // Returns true if the update url points to Webstore.
  73   bool IsFromWebStore() const;
  74
  75   const std::string& app_id() const { return app_id_; }
  76   const std::string& user_id() const { return user_id_; }
  77   const std::string& name() const { return name_; }
  78   const GURL& update_url() const { return update_url_; }
  79   const gfx::ImageSkia& icon() const { return icon_; }
  80   Status status() const { return status_; }
  81
  82  private:
  83   class CrxLoader;
  84   class IconLoader;
  85   class WebstoreDataParser;
  86
  87   void SetStatus(Status status);
  88
  89   // Returns URLRequestContextGetter to use for fetching web store data.
  90   net::URLRequestContextGetter* GetRequestContextGetter();
  91
  92   // Loads the locally cached data. Return false if there is none.
  93   bool LoadFromCache();
  94
  95   // Sets the cached data.
  96   void SetCache(const std::string& name, const base::FilePath& icon_path);
  97
  98   // Helper to set the cached data using a SkBitmap icon.
  99   void SetCache(const std::string& name, const SkBitmap& icon);
 100
 101   // Callback for extensions::ImageLoader.
 102   void OnExtensionIconLoaded(const gfx::Image& icon);
 103
 104   // Callbacks for IconLoader.
 105   void OnIconLoadSuccess(const gfx::ImageSkia& icon);
 106   void OnIconLoadFailure();
 107
 108   // Callbacks for WebstoreDataParser
 109   void OnWebstoreParseSuccess(const SkBitmap& icon);
 110   void OnWebstoreParseFailure();
 111
 112   // Starts to fetch data from web store.
 113   void StartFetch();
 114
 115   // extensions::WebstoreDataFetcherDelegate overrides:
 116   void OnWebstoreRequestFailure() override;
 117   void OnWebstoreResponseParseSuccess(
 118       scoped_ptr<base::DictionaryValue> webstore_data) override;
 119   void OnWebstoreResponseParseFailure(const std::string& error) override;
 120
 121   // Helper function for testing for the existence of |key| in
 122   // |response|. Passes |key|'s content via |value| and returns
 123   // true when |key| is present.
 124   bool CheckResponseKeyValue(const base::DictionaryValue* response,
 125                              const char* key,
 126                              std::string* value);
 127
 128   // Extracts meta data from crx file when loading from Webstore and local
 129   // cache fails.
 130   void MaybeLoadFromCrx();
 131
 132   void OnCrxLoadFinished(const CrxLoader* crx_loader);
 133
 134   KioskAppDataDelegate* delegate_;  // not owned.
 135   Status status_;
 136
 137   std::string app_id_;
 138   std::string user_id_;
 139   std::string name_;
 140   GURL update_url_;
 141   gfx::ImageSkia icon_;
 142
 143   scoped_ptr<extensions::WebstoreDataFetcher> webstore_fetcher_;
 144   base::FilePath icon_path_;
 145
 146   base::FilePath crx_file_;
 147
 148   DISALLOW_COPY_AND_ASSIGN(KioskAppData);
 149 };
 150
 151 }  // namespace chromeos
 152
 153 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_