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
  17 class Profile;
  18
  19 namespace base {
  20 class RefCountedString;
  21 }
  22
  23 namespace extensions {
  24 class Extension;
  25 class WebstoreDataFetcher;
  26 }
  27
  28 namespace gfx {
  29 class Image;
  30 }
  31
  32 namespace net {
  33 class URLRequestContextGetter;
  34 }
  35
  36 namespace chromeos {
  37
  38 class KioskAppDataDelegate;
  39
  40 // Fetches an app's web store data and manages the cached info such as name
  41 // and icon.
  42 class KioskAppData : public base::SupportsWeakPtr<KioskAppData>,
  43                      public extensions::WebstoreDataFetcherDelegate {
  44  public:
  45   enum Status {
  46     STATUS_INIT,     // Data initialized with app id.
  47     STATUS_LOADING,  // Loading data from cache or web store.
  48     STATUS_LOADED,   // Data loaded.
  49     STATUS_ERROR,    // Failed to load data.
  50   };
  51
  52   KioskAppData(KioskAppDataDelegate* delegate,
  53                const std::string& app_id,
  54                const std::string& user_id);
  55   virtual ~KioskAppData();
  56
  57   // Loads app data from cache. If there is no cached data, fetches it
  58   // from web store.
  59   void Load();
  60
  61   // Clears locally cached data.
  62   void ClearCache();
  63
  64   // Loads app data from the app installed in the given profile.
  65   void LoadFromInstalledApp(Profile* profile, const extensions::Extension* app);
  66
  67   // Returns true if web store data fetching is in progress.
  68   bool IsLoading() const;
  69
  70   const std::string& app_id() const { return app_id_; }
  71   const std::string& user_id() const { return user_id_; }
  72   const std::string& name() const { return name_; }
  73   const gfx::ImageSkia& icon() const { return icon_; }
  74   const base::RefCountedString* raw_icon() const {
  75     return raw_icon_.get();
  76   }
  77   Status status() const { return status_; }
  78
  79  private:
  80   class IconLoader;
  81   class WebstoreDataParser;
  82
  83   void SetStatus(Status status);
  84
  85   // Returns URLRequestContextGetter to use for fetching web store data.
  86   net::URLRequestContextGetter* GetRequestContextGetter();
  87
  88   // Loads the locally cached data. Return false if there is none.
  89   bool LoadFromCache();
  90
  91   // Sets the cached data.
  92   void SetCache(const std::string& name, const base::FilePath& icon_path);
  93
  94   // Helper to set the cached data using a SkBitmap icon.
  95   void SetCache(const std::string& name, const SkBitmap& icon);
  96
  97   // Callback for extensions::ImageLoader.
  98   void OnExtensionIconLoaded(const gfx::Image& icon);
  99
 100   // Callbacks for IconLoader.
 101   void OnIconLoadSuccess(const scoped_refptr<base::RefCountedString>& raw_icon,
 102                          const gfx::ImageSkia& icon);
 103   void OnIconLoadFailure();
 104
 105   // Callbacks for WebstoreDataParser
 106   void OnWebstoreParseSuccess(const SkBitmap& icon);
 107   void OnWebstoreParseFailure();
 108
 109   // Starts to fetch data from web store.
 110   void StartFetch();
 111
 112   // extensions::WebstoreDataFetcherDelegate overrides:
 113   virtual void OnWebstoreRequestFailure() OVERRIDE;
 114   virtual void OnWebstoreResponseParseSuccess(
 115       scoped_ptr<base::DictionaryValue> webstore_data) OVERRIDE;
 116   virtual void OnWebstoreResponseParseFailure(
 117       const std::string& error) OVERRIDE;
 118
 119   // Helper function for testing for the existence of |key| in
 120   // |response|. Passes |key|'s content via |value| and returns
 121   // true when |key| is present.
 122   bool CheckResponseKeyValue(const base::DictionaryValue* response,
 123                              const char* key,
 124                              std::string* value);
 125
 126   KioskAppDataDelegate* delegate_;  // not owned.
 127   Status status_;
 128
 129   std::string app_id_;
 130   std::string user_id_;
 131   std::string name_;
 132   gfx::ImageSkia icon_;
 133   scoped_refptr<base::RefCountedString> raw_icon_;
 134
 135   scoped_ptr<extensions::WebstoreDataFetcher> webstore_fetcher_;
 136   base::FilePath icon_path_;
 137
 138   DISALLOW_COPY_AND_ASSIGN(KioskAppData);
 139 };
 140
 141 }  // namespace chromeos
 142
 143 #endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_DATA_H_