components/open_from_clipboard/clipboard_recent_content_ios.h

   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.
   4
   5 #ifndef COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IOS_H_
   6 #define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IOS_H_
   7
   8 #include "base/mac/scoped_nsobject.h"
   9 #include "components/open_from_clipboard/clipboard_recent_content.h"
  10 #include "url/gurl.h"
  11
  12 @class NSDate;
  13 @class PasteboardNotificationListenerBridge;
  14
  15 namespace test {
  16 class ClipboardRecentContentIOSTestHelper;
  17 }
  18
  19 template <typename T>
  20 struct DefaultSingletonTraits;
  21
  22 // IOS implementation of ClipboardRecentContent
  23 class ClipboardRecentContentIOS : public ClipboardRecentContent {
  24  public:
  25   static ClipboardRecentContentIOS* GetInstance();
  26   // Notifies that the content of the pasteboard may have changed.
  27   void PasteboardChanged();
  28
  29   bool GetRecentURLFromClipboard(GURL* url) const override;
  30
  31   base::TimeDelta GetClipboardContentAge() const override;
  32
  33  protected:
  34   // Protected for testing.
  35   ClipboardRecentContentIOS();
  36   ~ClipboardRecentContentIOS() override;
  37
  38  private:
  39   friend struct DefaultSingletonTraits<ClipboardRecentContentIOS>;
  40   friend class test::ClipboardRecentContentIOSTestHelper;
  41
  42   // Loads information from the user defaults about the latest pasteboard entry.
  43   void LoadFromUserDefaults();
  44   // Saves information to the user defaults about the latest pasteboard entry.
  45   void SaveToUserDefaults();
  46   // Returns the URL contained in the clipboard (if any).
  47   GURL URLFromPasteboard();
  48   // Returns whether the device has restarted since the last time a pasteboard
  49   // change was detected.
  50   bool DeviceRestartedSincePasteboardChanged();
  51
  52   // The pasteboard's change count. Increases everytime the pasteboard changes.
  53   NSInteger lastPasteboardChangeCount_;
  54   // Estimation of the date when the pasteboard changed.
  55   base::scoped_nsobject<NSDate> lastPasteboardChangeDate_;
  56   // Cache of the GURL contained in the pasteboard (if any).
  57   GURL urlFromPasteboardCache_;
  58   // Bridge to receive notification when the pasteboard changes.
  59   base::scoped_nsobject<PasteboardNotificationListenerBridge>
  60       notificationBridge_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(ClipboardRecentContentIOS);
  63 };
  64
  65 #endif  // COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_IOS_H_