Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/offline_page_model_query.h

-// Copyright 2016 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_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_QUERY_H_
-#define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_QUERY_H_
-
-#include <set>
-#include <vector>
-
-#include "base/memory/ptr_util.h"
-#include "components/offline_pages/client_policy_controller.h"
-#include "components/offline_pages/offline_page_item.h"
-#include "components/offline_pages/offline_page_types.h"
-
-namespace offline_pages {
-
-// Can be used by OfflinePageModel instances to direct a query of the model.
-class OfflinePageModelQuery {
- public:
-  // A query can be constrained by several fields.  This constraint can be
-  // either a positive or negative one (or no constraint): a page MUST have
-  // something, or a page MUST NOT have something to match a query.
-  enum class Requirement {
-    // No requirement.
-    UNSET,
-    // All returned pages will have one of the values specified in the query
-    // requirement.
-    INCLUDE_MATCHING,
-    // All returned pages will not have any of the values specified in the query
-    // requirement.
-    EXCLUDE_MATCHING,
-  };
-
-  OfflinePageModelQuery();
-  virtual ~OfflinePageModelQuery();
-
-  std::pair<bool, std::set<std::string>> GetRestrictedToNamespaces() const;
-  std::pair<Requirement, std::set<int64_t>> GetRestrictedToOfflineIds() const;
-  std::pair<Requirement, std::set<ClientId>> GetRestrictedToClientIds() const;
-  std::pair<Requirement, std::set<GURL>> GetRestrictedToUrls() const;
-
-  // This is the workhorse function that is used by the in-memory offline page
-  // model, given a page it will find out whether that page matches the query.
-  bool Matches(const OfflinePageItem& page) const;
-
- private:
-  friend class OfflinePageModelQueryBuilder;
-
-  std::unique_ptr<std::set<std::string>> restricted_to_namespaces_;
-
-  std::pair<Requirement, std::set<int64_t>> offline_ids_;
-  std::pair<Requirement, std::set<ClientId>> client_ids_;
-  std::pair<Requirement, std::set<GURL>> urls_;
-
-  DISALLOW_COPY_AND_ASSIGN(OfflinePageModelQuery);
-};
-
-// Used to create an offline page model query.  QueryBuilders without
-// modifications create queries that allow all pages.
-// Can restrict results by policies provided by |ClientPolicyController|, or by
-// individual features of pages. Each restriction comes with a |Requirement|
-// that can be used to specify whether the input restriction should include or
-// exclude matching pages.
-class OfflinePageModelQueryBuilder {
- public:
-  using Requirement = OfflinePageModelQuery::Requirement;
-
-  OfflinePageModelQueryBuilder();
-  ~OfflinePageModelQueryBuilder();
-
-  // Sets the offline page IDs that are valid for this request.  If called
-  // multiple times, overwrites previous offline page ID restrictions.
-  OfflinePageModelQueryBuilder& SetOfflinePageIds(
-      Requirement requirement,
-      const std::vector<int64_t>& ids);
-
-  // Sets the client IDs that are valid for this request.  If called multiple
-  // times, overwrites previous client ID restrictions.
-  OfflinePageModelQueryBuilder& SetClientIds(Requirement requirement,
-                                             const std::vector<ClientId>& ids);
-
-  // Sets the URLs that are valid for this request.  If called multiple times,
-  // overwrites previous URL restrictions.
-  OfflinePageModelQueryBuilder& SetUrls(Requirement requirement,
-                                        const std::vector<GURL>& urls);
-
-  // Only include pages whose namespaces satisfy
-  // ClientPolicyController::IsSupportedByDownload(|namespace|) ==
-  //     |supported_by_download|
-  // Multiple calls overwrite previous ones.
-  OfflinePageModelQueryBuilder& RequireSupportedByDownload(
-      Requirement supported_by_download);
-
-  // Only include pages whose namespaces satisfy
-  // ClientPolicyController::IsShownAsRecentlyVisitedSite(|namespace|) ==
-  //     |recently_visited|
-  // Multiple calls overwrite previous ones.
-  OfflinePageModelQueryBuilder& RequireShownAsRecentlyVisitedSite(
-      Requirement recently_visited);
-
-  // Only include pages whose namespaces satisfy
-  // ClientPolicyController::IsRestrictedToOriginalTab(|namespace|) ==
-  //     |original_tab|
-  // Multiple calls overwrite previous ones.
-  OfflinePageModelQueryBuilder& RequireRestrictedToOriginalTab(
-      Requirement original_tab);
-
-  // Builds the query using the namespace policies provided by |controller|
-  // This resets the internal state.  |controller| should not be |nullptr|.
-  std::unique_ptr<OfflinePageModelQuery> Build(
-      ClientPolicyController* controller);
-
- private:
-  // Intersects the allowed namespaces in query_ with |namespaces|.  If
-  // |inverted| is true, intersects the allowed namespaces with all namespaces
-  // except those provided in |namespaces|.
-  void IntersectWithNamespaces(ClientPolicyController* controller,
-                               const std::vector<std::string>& namespaces,
-                               Requirement match_requirement);
-
-  std::pair<Requirement, std::vector<int64_t>> offline_ids_;
-  std::pair<Requirement, std::vector<ClientId>> client_ids_;
-  std::pair<Requirement, std::vector<GURL>> urls_;
-
-  Requirement supported_by_download_ = Requirement::UNSET;
-  Requirement shown_as_recently_visited_site_ = Requirement::UNSET;
-  Requirement restricted_to_original_tab_ = Requirement::UNSET;
-
-  DISALLOW_COPY_AND_ASSIGN(OfflinePageModelQueryBuilder);
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_QUERY_H_