| // Copyright 2015 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_EXTENSIONS_API_DECLARATIVE_CONTENT_DECLARATIVE_CONTENT_PAGE_URL_CONDITION_TRACKER_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_CONTENT_DECLARATIVE_CONTENT_PAGE_URL_CONDITION_TRACKER_H_ |
| |
| #include <memory> |
| #include <set> |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "chrome/browser/extensions/api/declarative_content/content_predicate_evaluator.h" |
| #include "components/url_matcher/url_matcher.h" |
| #include "content/public/browser/web_contents_observer.h" |
| |
| namespace base { |
| class Value; |
| } |
| |
| namespace extensions { |
| |
| class Extension; |
| |
| // Tests the URL of a page against conditions specified with the |
| // URLMatcherConditionSet. |
| class DeclarativeContentPageUrlPredicate : public ContentPredicate { |
| public: |
| ~DeclarativeContentPageUrlPredicate() override; |
| |
| url_matcher::URLMatcherConditionSet* url_matcher_condition_set() const { |
| return url_matcher_condition_set_.get(); |
| } |
| |
| static std::unique_ptr<DeclarativeContentPageUrlPredicate> Create( |
| ContentPredicateEvaluator* evaluator, |
| url_matcher::URLMatcherConditionFactory* url_matcher_condition_factory, |
| const base::Value& value, |
| std::string* error); |
| |
| // ContentPredicate: |
| ContentPredicateEvaluator* GetEvaluator() const override; |
| |
| private: |
| DeclarativeContentPageUrlPredicate( |
| ContentPredicateEvaluator* evaluator, |
| scoped_refptr<url_matcher::URLMatcherConditionSet> |
| url_matcher_condition_set); |
| |
| // Weak. |
| ContentPredicateEvaluator* const evaluator_; |
| |
| scoped_refptr<url_matcher::URLMatcherConditionSet> url_matcher_condition_set_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeclarativeContentPageUrlPredicate); |
| }; |
| |
| // Supports tracking of URL matches across tab contents in a browser context, |
| // and querying for the matching condition sets. |
| class DeclarativeContentPageUrlConditionTracker |
| : public ContentPredicateEvaluator { |
| public: |
| explicit DeclarativeContentPageUrlConditionTracker(Delegate* delegate); |
| ~DeclarativeContentPageUrlConditionTracker() override; |
| |
| // ContentPredicateEvaluator: |
| std::string GetPredicateApiAttributeName() const override; |
| std::unique_ptr<const ContentPredicate> CreatePredicate( |
| const Extension* extension, |
| const base::Value& value, |
| std::string* error) override; |
| void TrackPredicates( |
| const std::map<const void*, std::vector<const ContentPredicate*>>& |
| predicates) override; |
| void StopTrackingPredicates( |
| const std::vector<const void*>& predicate_groups) override; |
| void TrackForWebContents(content::WebContents* contents) override; |
| void OnWebContentsNavigation( |
| content::WebContents* contents, |
| content::NavigationHandle* navigation_handle) override; |
| bool EvaluatePredicate(const ContentPredicate* predicate, |
| content::WebContents* tab) const override; |
| |
| // Returns true if this object retains no allocated data. Only for debugging. |
| bool IsEmpty() const; |
| |
| private: |
| class PerWebContentsTracker : public content::WebContentsObserver { |
| public: |
| using RequestEvaluationCallback = |
| base::Callback<void(content::WebContents*)>; |
| using WebContentsDestroyedCallback = |
| base::Callback<void(content::WebContents*)>; |
| |
| PerWebContentsTracker( |
| content::WebContents* contents, |
| url_matcher::URLMatcher* url_matcher, |
| const RequestEvaluationCallback& request_evaluation, |
| const WebContentsDestroyedCallback& web_contents_destroyed); |
| ~PerWebContentsTracker() override; |
| |
| void UpdateMatchesForCurrentUrl(bool request_evaluation_if_unchanged); |
| |
| const std::set<url_matcher::URLMatcherConditionSet::ID>& matches() { |
| return matches_; |
| } |
| |
| private: |
| // content::WebContentsObserver |
| void WebContentsDestroyed() override; |
| |
| url_matcher::URLMatcher* url_matcher_; |
| const RequestEvaluationCallback request_evaluation_; |
| const WebContentsDestroyedCallback web_contents_destroyed_; |
| |
| std::set<url_matcher::URLMatcherConditionSet::ID> matches_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PerWebContentsTracker); |
| }; |
| |
| // Called by PerWebContentsTracker on web contents destruction. |
| void DeletePerWebContentsTracker(content::WebContents* tracker); |
| |
| void UpdateMatchesForAllTrackers(); |
| |
| // Weak. |
| Delegate* const delegate_; |
| |
| // Matches URLs for all WebContents. |
| url_matcher::URLMatcher url_matcher_; |
| |
| // Grouped predicates tracked by this object. |
| std::map<const void*, std::vector<const DeclarativeContentPageUrlPredicate*>> |
| tracked_predicates_; |
| |
| // Maps WebContents to the tracker for that WebContents state. |
| std::map<content::WebContents*, std::unique_ptr<PerWebContentsTracker>> |
| per_web_contents_tracker_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeclarativeContentPageUrlConditionTracker); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_CONTENT_DECLARATIVE_CONTENT_PAGE_URL_CONDITION_TRACKER_H_ |