1 // Copyright 2014 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_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ 6 #define COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ 7 8 #include <map> 9 #include <set> 10 11 #include "base/sequence_checker.h" 12 #include "ui/gfx/image/image.h" 13 14 class GURL; 15 16 // The ImageStore keeps an image for each URL. This class is not thread safe, 17 // and will check the thread using base::ThreadChecker, except the constructor. 18 class ImageStore { 19 public: 20 ImageStore(); 21 virtual ~ImageStore(); 22 23 // Returns true if there is an image for this url. 24 virtual bool HasKey(const GURL& page_url) = 0; 25 26 // Inserts an image and its url in the store for the the given page url. The 27 // image can be null indicating that the download of the image at this URL or 28 // encoding for insertion failed previously. On non-ios platforms, |image| 29 // must have exactly one representation with a scale factor of 1. 30 virtual void Insert(const GURL& page_url, 31 const GURL& image_url, 32 const gfx::Image& image) = 0; 33 34 // Removes an image from the store. 35 virtual void Erase(const GURL& page_url) = 0; 36 37 // Returns the image associated with this url. Returns empty image and url if 38 // there are no image for this url. It also returns the image_url where the 39 // image was downloaded from or failed to be downloaded from. 40 virtual std::pair<gfx::Image, GURL> Get(const GURL& page_url) = 0; 41 42 // Returns the size of the image stored for this URL or empty size if no 43 // images are present. 44 virtual gfx::Size GetSize(const GURL& page_url) = 0; 45 46 // Populates |urls| with all the urls that have an image in the store. 47 virtual void GetAllPageUrls(std::set<GURL>* urls) = 0; 48 49 // Removes all images. 50 virtual void ClearAll() = 0; 51 52 // Moves an image from one url to another. 53 void ChangeImageURL(const GURL& from, const GURL& to); 54 55 // Returns the saved images storage size in bytes. If the storage doesn't 56 // exist yet or failed to read, returns -1. 57 virtual int64 GetStoreSizeInBytes() = 0; 58 59 protected: 60 base::SequenceChecker sequence_checker_; 61 62 private: 63 DISALLOW_COPY_AND_ASSIGN(ImageStore); 64 }; 65 66 #endif // COMPONENTS_ENHANCED_BOOKMARKS_IMAGE_STORE_H_ 67