| // Copyright 2015 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 COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_ |
| #define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "url/gurl.h" |
| |
| // Helper class returning an URL if the content of the clipboard can be turned |
| // into an URL, and if it estimates that the content of the clipboard is not too |
| // old. |
| class ClipboardRecentContent { |
| public: |
| ClipboardRecentContent(); |
| virtual ~ClipboardRecentContent(); |
| |
| // Returns the global instance of the ClipboardRecentContent singleton. This |
| // method does *not* create the singleton and will return null if no instance |
| // was registered via SetInstance(). |
| static ClipboardRecentContent* GetInstance(); |
| |
| // Sets the global instance of ClipboardRecentContent singleton. |
| static void SetInstance(std::unique_ptr<ClipboardRecentContent> new_instance); |
| |
| // Returns true if the clipboard contains a recent URL that is appropriate to |
| // be suggested and has not been supressed, and copies it in |url|. |
| // Otherwise, returns false. |url| must not be null. |
| virtual bool GetRecentURLFromClipboard(GURL* url) = 0; |
| |
| // Returns how old the content of the clipboard is. |
| virtual base::TimeDelta GetClipboardContentAge() const = 0; |
| |
| // Prevent GetRecentURLFromClipboard from returning anything until the |
| // clipboard's content changed. |
| virtual void SuppressClipboardContent() = 0; |
| |
| protected: |
| // GetRecentURLFromClipboard() should never return a URL from a clipboard |
| // older than this. |
| static base::TimeDelta MaximumAgeOfClipboard(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ClipboardRecentContent); |
| }; |
| |
| #endif // COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_ |