| // Copyright 2014 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_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ |
| #define COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ |
| |
| #include <map> |
| #include <set> |
| |
| #include "base/sequence_checker.h" |
| #include "ui/gfx/image/image.h" |
| |
| class GURL; |
| |
| // The ImageStore keeps an image for each URL. This class is not thread safe, |
| // and will check the thread using base::ThreadChecker, except the constructor. |
| class ImageStore { |
| public: |
| ImageStore(); |
| virtual ~ImageStore(); |
| |
| // Returns true if there is an image for this url. |
| virtual bool HasKey(const GURL& page_url) = 0; |
| |
| // Inserts an image and its url in the store for the the given page url. The |
| // image can be null indicating that the download of the image at this URL or |
| // encoding for insertion failed previously. On non-ios platforms, |image| |
| // must have exactly one representation with a scale factor of 1. |
| virtual void Insert(const GURL& page_url, |
| const GURL& image_url, |
| const gfx::Image& image) = 0; |
| |
| // Removes an image from the store. |
| virtual void Erase(const GURL& page_url) = 0; |
| |
| // Returns the image associated with this url. Returns empty image and url if |
| // there are no image for this url. It also returns the image_url where the |
| // image was downloaded from or failed to be downloaded from. |
| virtual std::pair<gfx::Image, GURL> Get(const GURL& page_url) = 0; |
| |
| // Returns the size of the image stored for this URL or empty size if no |
| // images are present. |
| virtual gfx::Size GetSize(const GURL& page_url) = 0; |
| |
| // Populates |urls| with all the urls that have an image in the store. |
| virtual void GetAllPageUrls(std::set<GURL>* urls) = 0; |
| |
| // Removes all images. |
| virtual void ClearAll() = 0; |
| |
| // Moves an image from one url to another. |
| void ChangeImageURL(const GURL& from, const GURL& to); |
| |
| // Returns the saved images storage size in bytes. If the storage doesn't |
| // exist yet or failed to read, returns -1. |
| virtual int64 GetStoreSizeInBytes() = 0; |
| |
| protected: |
| base::SequenceChecker sequence_checker_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ImageStore); |
| }; |
| |
| #endif // COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ |