| // Copyright (c) 2012 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 CHROME_BROWSER_FAVICON_FAVICON_SERVICE_H_ |
| #define CHROME_BROWSER_FAVICON_FAVICON_SERVICE_H_ |
| |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/containers/hash_tables.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/task/cancelable_task_tracker.h" |
| #include "components/favicon_base/favicon_callback.h" |
| #include "components/favicon_base/favicon_types.h" |
| #include "components/keyed_service/core/keyed_service.h" |
| |
| class FaviconClient; |
| class GURL; |
| class HistoryService; |
| struct ImportedFaviconUsage; |
| class Profile; |
| |
| // The favicon service provides methods to access favicons. It calls the history |
| // backend behind the scenes. The callbacks are run asynchronously, even in the |
| // case of an error. |
| class FaviconService : public KeyedService { |
| public: |
| // TODO(jif): Remove usage of Profile. http://crbug.com/378208. |
| // The FaviconClient must outlive the constructed FaviconService. |
| FaviconService(Profile* profile, FaviconClient* favicon_client); |
| |
| virtual ~FaviconService(); |
| |
| // We usually pass parameters with pointer to avoid copy. This function is a |
| // helper to run FaviconResultsCallback with pointer parameters. |
| static void FaviconResultsCallbackRunner( |
| const favicon_base::FaviconResultsCallback& callback, |
| const std::vector<favicon_base::FaviconRawBitmapResult>* results); |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Methods to request favicon bitmaps from the history backend for |icon_url|. |
| // |icon_url| is the URL of the icon itself. |
| // (e.g. <http://www.google.com/favicon.ico>) |
| |
| // Requests the favicon at |icon_url| of type favicon_base::FAVICON and of |
| // size gfx::kFaviconSize. The returned gfx::Image is populated with |
| // representations for all of the scale factors supported by the platform |
| // (e.g. MacOS). If data is unavailable for some or all of the scale factors, |
| // the bitmaps with the best matching sizes are resized. |
| base::CancelableTaskTracker::TaskId GetFaviconImage( |
| const GURL& icon_url, |
| const favicon_base::FaviconImageCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Requests the favicon at |icon_url| of |icon_type| of size |
| // |desired_size_in_pixel|. If there is no favicon of size |
| // |desired_size_in_pixel|, the favicon bitmap which best matches |
| // |desired_size_in_pixel| is resized. If |desired_size_in_pixel| is 0, |
| // the largest favicon bitmap is returned. |
| base::CancelableTaskTracker::TaskId GetRawFavicon( |
| const GURL& icon_url, |
| favicon_base::IconType icon_type, |
| int desired_size_in_pixel, |
| const favicon_base::FaviconRawBitmapCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // The first argument for |callback| is the set of bitmaps for the passed in |
| // URL and icon types whose pixel sizes best match the passed in |
| // |desired_size_in_dip| at the resource scale factors supported by the |
| // current platform (eg MacOS) in addition to 1x. The vector has at most one |
| // result for each of the resource scale factors. There are less entries if a |
| // single/ result is the best bitmap to use for several resource scale |
| // factors. |
| base::CancelableTaskTracker::TaskId GetFavicon( |
| const GURL& icon_url, |
| favicon_base::IconType icon_type, |
| int desired_size_in_dip, |
| const favicon_base::FaviconResultsCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Methods to request favicon bitmaps from the history backend for |page_url|. |
| // |page_url| is the web page the favicon is associated with. |
| // (e.g. <http://www.google.com>) |
| |
| // Requests the favicon for the page at |page_url| of type |
| // favicon_base::FAVICON and of size gfx::kFaviconSize. The returned |
| // gfx::Image is populated with representations for all of the scale factors |
| // supported by the platform (e.g. MacOS). If data is unavailable for some or |
| // all of the scale factors, the bitmaps with the best matching sizes are |
| // resized. |
| base::CancelableTaskTracker::TaskId GetFaviconImageForPageURL( |
| const GURL& page_url, |
| const favicon_base::FaviconImageCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Requests the favicon for the page at |page_url| with one of |icon_types| |
| // and with |desired_size_in_pixel|. |icon_types| can be any combination of |
| // IconTypes. If favicon bitmaps for several IconTypes are available, the |
| // favicon bitmap is chosen in the priority of TOUCH_PRECOMPOSED_ICON, |
| // TOUCH_ICON and FAVICON. If there is no favicon bitmap of size |
| // |desired_size_in_pixel|, the favicon bitmap which best matches |
| // |desired_size_in_pixel| is resized. If |desired_size_in_pixel| is 0, |
| // the largest favicon bitmap is returned. Results with a higher priority |
| // IconType are preferred over an exact match of the favicon bitmap size. |
| base::CancelableTaskTracker::TaskId GetRawFaviconForPageURL( |
| const GURL& page_url, |
| int icon_types, |
| int desired_size_in_pixel, |
| const favicon_base::FaviconRawBitmapCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // See HistoryService::GetLargestFaviconForPageURL(). |
| base::CancelableTaskTracker::TaskId GetLargestRawFaviconForPageURL( |
| const GURL& page_url, |
| const std::vector<int>& icon_types, |
| int minimum_size_in_pixels, |
| const favicon_base::FaviconRawBitmapCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| base::CancelableTaskTracker::TaskId GetFaviconForPageURL( |
| const GURL& page_url, |
| int icon_types, |
| int desired_size_in_dip, |
| const favicon_base::FaviconResultsCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Set the favicon mappings to |page_url| for |icon_types| in the history |
| // database. |
| // Sample |icon_urls|: |
| // { ICON_URL1 -> TOUCH_ICON, known to the database, |
| // ICON_URL2 -> TOUCH_ICON, not known to the database, |
| // ICON_URL3 -> TOUCH_PRECOMPOSED_ICON, known to the database } |
| // The new mappings are computed from |icon_urls| with these rules: |
| // 1) Any urls in |icon_urls| which are not already known to the database are |
| // rejected. |
| // Sample new mappings to |page_url|: { ICON_URL1, ICON_URL3 } |
| // 2) If |icon_types| has multiple types, the mappings are only set for the |
| // largest icon type. |
| // Sample new mappings to |page_url|: { ICON_URL3 } |
| // |icon_types| can only have multiple IconTypes if |
| // |icon_types| == TOUCH_ICON | TOUCH_PRECOMPOSED_ICON. |
| // The favicon bitmaps which most closely match |desired_size_in_dip| |
| // at the reosurce scale factors supported by the current platform (eg MacOS) |
| // in addition to 1x from the favicons which were just mapped to |page_url| |
| // are returned. If |desired_size_in_dip| is 0, the largest favicon bitmap is |
| // returned. |
| base::CancelableTaskTracker::TaskId UpdateFaviconMappingsAndFetch( |
| const GURL& page_url, |
| const std::vector<GURL>& icon_urls, |
| int icon_types, |
| int desired_size_in_dip, |
| const favicon_base::FaviconResultsCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Used to request a bitmap for the favicon with |favicon_id| which is not |
| // resized from the size it is stored at in the database. If there are |
| // multiple favicon bitmaps for |favicon_id|, the largest favicon bitmap is |
| // returned. |
| base::CancelableTaskTracker::TaskId GetLargestRawFaviconForID( |
| favicon_base::FaviconID favicon_id, |
| const favicon_base::FaviconRawBitmapCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Marks all types of favicon for the page as being out of date. |
| void SetFaviconOutOfDateForPage(const GURL& page_url); |
| |
| // Clones all icons from an existing page. This associates the icons from |
| // |old_page_url| with |new_page_url|, provided |new_page_url| has no |
| // recorded associations to any other icons. |
| // Needed if you want to declare favicons (tentatively) in advance, before a |
| // page is ever visited. |
| void CloneFavicon(const GURL& old_page_url, const GURL& new_page_url); |
| |
| // Allows the importer to set many favicons for many pages at once. The pages |
| // must exist, any favicon sets for unknown pages will be discarded. Existing |
| // favicons will not be overwritten. |
| void SetImportedFavicons( |
| const std::vector<ImportedFaviconUsage>& favicon_usage); |
| |
| // Set the favicon for |page_url| for |icon_type| in the thumbnail database. |
| // Unlike SetFavicons(), this method will not delete preexisting bitmap data |
| // which is associated to |page_url| if at all possible. Use this method if |
| // the favicon bitmaps for any of ui::GetSupportedScaleFactors() are not |
| // known. |
| void MergeFavicon(const GURL& page_url, |
| const GURL& icon_url, |
| favicon_base::IconType icon_type, |
| scoped_refptr<base::RefCountedMemory> bitmap_data, |
| const gfx::Size& pixel_size); |
| |
| // Set the favicon for |page_url| for |icon_type| in the thumbnail database. |
| // |icon_url| is the single favicon to map to |page_url|. Mappings from |
| // |page_url| to favicons at different icon URLs will be deleted. |
| // A favicon bitmap is added for each image rep in |image|. Any preexisting |
| // bitmap data for |icon_url| is deleted. It is important that |image| |
| // contains image reps for all of ui::GetSupportedScaleFactors(). Use |
| // MergeFavicon() if it does not. |
| // TODO(pkotwicz): Save unresized favicon bitmaps to the database. |
| // TODO(pkotwicz): Support adding favicons for multiple icon URLs to the |
| // thumbnail database. |
| void SetFavicons(const GURL& page_url, |
| const GURL& icon_url, |
| favicon_base::IconType icon_type, |
| const gfx::Image& image); |
| |
| // Avoid repeated requests to download missing favicon. |
| void UnableToDownloadFavicon(const GURL& icon_url); |
| bool WasUnableToDownloadFavicon(const GURL& icon_url) const; |
| void ClearUnableToDownloadFavicons(); |
| |
| private: |
| typedef uint32 MissingFaviconURLHash; |
| base::hash_set<MissingFaviconURLHash> missing_favicon_urls_; |
| HistoryService* history_service_; |
| Profile* profile_; |
| FaviconClient* favicon_client_; |
| |
| // Helper function for GetFaviconImageForPageURL(), GetRawFaviconForPageURL() |
| // and GetFaviconForPageURL(). |
| base::CancelableTaskTracker::TaskId GetFaviconForPageURLImpl( |
| const GURL& page_url, |
| int icon_types, |
| const std::vector<int>& desired_sizes_in_pixel, |
| const favicon_base::FaviconResultsCallback& callback, |
| base::CancelableTaskTracker* tracker); |
| |
| // Intermediate callback for GetFaviconImage() and GetFaviconImageForPageURL() |
| // so that history service can deal solely with FaviconResultsCallback. |
| // Builds favicon_base::FaviconImageResult from |favicon_bitmap_results| and |
| // runs |callback|. |
| void RunFaviconImageCallbackWithBitmapResults( |
| const favicon_base::FaviconImageCallback& callback, |
| int desired_size_in_dip, |
| const std::vector<favicon_base::FaviconRawBitmapResult>& |
| favicon_bitmap_results); |
| |
| // Intermediate callback for GetRawFavicon() and GetRawFaviconForPageURL() |
| // so that history service can deal solely with FaviconResultsCallback. |
| // Resizes favicon_base::FaviconRawBitmapResult if necessary and runs |
| // |callback|. |
| void RunFaviconRawBitmapCallbackWithBitmapResults( |
| const favicon_base::FaviconRawBitmapCallback& callback, |
| int desired_size_in_pixel, |
| const std::vector<favicon_base::FaviconRawBitmapResult>& |
| favicon_bitmap_results); |
| |
| DISALLOW_COPY_AND_ASSIGN(FaviconService); |
| }; |
| |
| #endif // CHROME_BROWSER_FAVICON_FAVICON_SERVICE_H_ |