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// 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_BOOKMARKS_BROWSER_BOOKMARK_CLIENT_H_
#define COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_CLIENT_H_
#include <cstdint>
#include <string>
#include <unordered_map>
#include <utility>
#include "base/callback_forward.h"
#include "base/task/cancelable_task_tracker.h"
#include "components/bookmarks/browser/bookmark_node.h"
#include "components/favicon_base/favicon_callback.h"
#include "components/keyed_service/core/keyed_service.h"
class GURL;
namespace base {
struct UserMetricsAction;
}
namespace bookmarks {
class BookmarkModel;
class BookmarkPermanentNode;
// A callback that generates a std::unique_ptr<BookmarkPermanentNode>, given a
// max ID to use. The max ID argument will be updated after if a new node has
// been created and assigned an ID.
using LoadManagedNodeCallback =
base::OnceCallback<std::unique_ptr<BookmarkPermanentNode>(int64_t*)>;
// This class abstracts operations that depends on the embedder's environment,
// e.g. Chrome.
class BookmarkClient {
public:
// Type representing a mapping from URLs to the number of times the URL has
// been typed by the user in the Omnibox.
using UrlTypedCountMap = std::unordered_map<const GURL*, int>;
virtual ~BookmarkClient() {}
// Called during initialization of BookmarkModel.
virtual void Init(BookmarkModel* model);
// Requests a favicon from the history cache for the web page at |page_url|
// for icon type favicon_base::IconType::kFavicon. |callback| is run when the
// favicon has been fetched, which returns gfx::Image is a multi-resolution
// image of gfx::kFaviconSize DIP width and height. The data from the history
// cache is resized if need be.
virtual base::CancelableTaskTracker::TaskId GetFaviconImageForPageURL(
const GURL& page_url,
favicon_base::FaviconImageCallback callback,
base::CancelableTaskTracker* tracker);
// Returns true if the embedder supports typed count for URL.
virtual bool SupportsTypedCountForUrls();
// Retrieves the number of times each bookmark URL has been typed in
// the Omnibox by the user. For each key (URL) in |url_typed_count_map|,
// the corresponding value will be updated with the typed count of that URL.
// |url_typed_count_map| must not be null.
virtual void GetTypedCountForUrls(UrlTypedCountMap* url_typed_count_map);
// Returns whether the embedder wants permanent node of type |type|
// to always be visible or to only show them when not empty.
virtual bool IsPermanentNodeVisibleWhenEmpty(BookmarkNode::Type type) = 0;
// Wrapper around RecordAction defined in base/metrics/user_metrics.h
// that ensure that the action is posted from the correct thread.
virtual void RecordAction(const base::UserMetricsAction& action) = 0;
// Returns a task that will be used to load a managed root node. This task
// will be invoked in the Profile's IO task runner.
virtual LoadManagedNodeCallback GetLoadManagedNodeCallback() = 0;
// Returns true if the |permanent_node| can have its title updated.
virtual bool CanSetPermanentNodeTitle(const BookmarkNode* permanent_node) = 0;
// Returns true if |node| should sync.
virtual bool CanSyncNode(const BookmarkNode* node) = 0;
// Returns true if this node can be edited by the user.
// TODO(joaodasilva): the model should check this more aggressively, and
// should give the client a means to temporarily disable those checks.
// http://crbug.com/49598
virtual bool CanBeEditedByUser(const BookmarkNode* node) = 0;
// Encodes the bookmark sync data into a string blob. It's used by the
// bookmark model to persist the sync metadata together with the bookmark
// model.
virtual std::string EncodeBookmarkSyncMetadata() = 0;
// Decodes a string represeting the sync metadata stored in |metadata_str|.
// The model calls this method after it has loaded the model data.
// |schedule_save_closure| is a repeating call back to trigger a model and
// metadata persistence process.
virtual void DecodeBookmarkSyncMetadata(
const std::string& metadata_str,
const base::RepeatingClosure& schedule_save_closure) = 0;
};
} // namespace bookmarks
#endif // COMPONENTS_BOOKMARKS_BROWSER_BOOKMARK_CLIENT_H_
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