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| 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 #ifndef IOS_CHROME_BROWSER_ENHANCED_BOOKMARKS_BOOKMARK_IMAGE_SERVICE_IOS_H_ | |
| 5 #define IOS_CHROME_BROWSER_ENHANCED_BOOKMARKS_BOOKMARK_IMAGE_SERVICE_IOS_H_ | |
| 6 | |
| 7 #include "components/enhanced_bookmarks/bookmark_image_service.h" | |
| 8 | |
| 9 #import <UIKit/UIKit.h> | |
| 10 | |
| 11 #include "base/containers/mru_cache.h" | |
| 12 #include "base/mac/scoped_nsobject.h" | |
| 13 #include "base/memory/weak_ptr.h" | |
| 14 #include "components/enhanced_bookmarks/image_record.h" | |
| 15 #include "ios/chrome/browser/net/image_fetcher.h" | |
| 16 | |
| 17 @protocol CRWJSInjectionEvaluator; | |
| 18 class GURL; | |
| 19 | |
| 20 namespace web { | |
| 21 class NavigationItem; | |
| 22 } | |
| 23 | |
| 24 class BookmarkImageServiceIOS | |
| 25 : public enhanced_bookmarks::BookmarkImageService { | |
| 26 public: | |
| 27 explicit BookmarkImageServiceIOS( | |
| 28 const base::FilePath& path, | |
| 29 enhanced_bookmarks::EnhancedBookmarkModel* enhanced_bookmark_model, | |
| 30 net::URLRequestContextGetter* context, | |
| 31 scoped_refptr<base::SequencedWorkerPool> pool); | |
| 32 BookmarkImageServiceIOS( | |
| 33 scoped_ptr<ImageStore> store, | |
| 34 enhanced_bookmarks::EnhancedBookmarkModel* enhanced_bookmark_model, | |
| 35 net::URLRequestContextGetter* context, | |
| 36 scoped_refptr<base::SequencedWorkerPool> pool); | |
| 37 ~BookmarkImageServiceIOS() override; | |
| 38 | |
| 39 // Searches the pageContext for a salient image, if a url is found the image | |
| 40 // is fetched and stored. | |
| 41 void RetrieveSalientImageFromContext(id<CRWJSInjectionEvaluator> page_context, | |
| 42 const GURL& page_url, | |
| 43 bool update_bookmark); | |
| 44 | |
| 45 // Invokes the superclass SalientImageForUrl, then resizes and optionally | |
| 46 // darkens the image. | |
| 47 void SalientImageResizedForUrl(const GURL& page_url, | |
| 48 const CGSize size, | |
| 49 bool darkened, | |
| 50 const ImageCallback& callback); | |
| 51 | |
| 52 // Investigates if the newly visited page corresponding to |navigation_item| | |
| 53 // and |original_url| points to a bookmarked url in needs of an updated image. | |
| 54 // If it is, invokes RetrieveSalientImageFromContext() for the relevant urls | |
| 55 // with |page_context|. | |
| 56 void FinishSuccessfulPageLoadForNativationItem( | |
| 57 id<CRWJSInjectionEvaluator> page_context, | |
| 58 web::NavigationItem* navigation_item, | |
| 59 const GURL& original_url); | |
| 60 | |
| 61 private: | |
| 62 // Resizes large images to proper size that fits device display. This method | |
| 63 // should _not_ run on the UI thread. | |
| 64 scoped_ptr<gfx::Image> ResizeImage(const gfx::Image& image) override; | |
| 65 | |
| 66 // Retrieves a salient image for a given pageUrl by downloading the image in | |
| 67 // one of the bookmarks. | |
| 68 void RetrieveSalientImage(const GURL& page_url, | |
| 69 const GURL& image_url, | |
| 70 const std::string& referrer, | |
| 71 net::URLRequest::ReferrerPolicy referrer_policy, | |
| 72 bool update_bookmark) override; | |
| 73 | |
| 74 // Caches the returned image before returning it. | |
| 75 void ReturnAndCache( | |
| 76 GURL page_url, | |
| 77 CGSize size, | |
| 78 bool darkened, | |
| 79 ImageCallback callback, | |
| 80 scoped_refptr<enhanced_bookmarks::ImageRecord> image_record); | |
| 81 | |
| 82 // A cache to store the most recently found images, this allows serving those | |
| 83 // images synchronously. | |
| 84 class MRUKey; | |
| 85 typedef scoped_refptr<enhanced_bookmarks::ImageRecord> MRUValue; | |
| 86 scoped_ptr<base::MRUCache<MRUKey, MRUValue>> cache_; | |
| 87 // The helper that actually fetches all those images. | |
| 88 scoped_ptr<image_fetcher::ImageFetcher> imageFetcher_; | |
| 89 // The script injected in a page to extract the salient image. | |
| 90 base::scoped_nsobject<NSString> script_; | |
| 91 // The pool used by the bookmark image service to run resize operations. | |
| 92 scoped_refptr<base::SequencedWorkerPool> pool_; | |
| 93 // Must be last data member. | |
| 94 base::WeakPtrFactory<BookmarkImageServiceIOS> weak_ptr_factory_; | |
| 95 DISALLOW_COPY_AND_ASSIGN(BookmarkImageServiceIOS); | |
| 96 }; | |
| 97 | |
| 98 #endif // IOS_CHROME_BROWSER_ENHANCED_BOOKMARKS_BOOKMARK_IMAGE_SERVICE_IOS_H_ | |
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