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// Copyright 2020 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 IOS_WEB_TEXT_FRAGMENTS_TEXT_FRAGMENTS_MANAGER_IMPL_H_
#define IOS_WEB_TEXT_FRAGMENTS_TEXT_FRAGMENTS_MANAGER_IMPL_H_
#import <UIKit/UIKit.h>
#import "base/gtest_prod_util.h"
#import "ios/web/public/text_fragments/text_fragments_manager.h"
#import "ios/web/public/web_state_observer.h"
#import "services/metrics/public/cpp/ukm_source_id.h"
@protocol CRWWebViewHandlerDelegate;
namespace web {
class WebState;
class NavigationContext;
struct Referrer;
// Class in charge of highlighting text fragments when they are present in
// WebStates' loaded URLs.
class TextFragmentsManagerImpl : public TextFragmentsManager,
public WebStateObserver {
public:
explicit TextFragmentsManagerImpl(WebState* web_state);
~TextFragmentsManagerImpl() override;
// WebStateUserData methods:
static void CreateForWebState(WebState* web_state);
static TextFragmentsManagerImpl* FromWebState(WebState* web_state);
// WebStateObserver methods:
void DidFinishNavigation(WebState* web_state,
NavigationContext* navigation_context) override;
void WebStateDestroyed(WebState* web_state) override;
private:
friend class web::WebStateUserData<TextFragmentsManagerImpl>;
// Checks the WebState's destination URL for Text Fragments. If found,
// searches the DOM for matching text, highlights the text, and scrolls the
// first into view. Uses the |context| and |referrer| to analyze the current
// navigation scenario.
void ProcessTextFragments(const web::NavigationContext* context,
const web::Referrer& referrer);
bool AreTextFragmentsAllowed(const web::NavigationContext* context);
void DidReceiveJavaScriptResponse(const base::DictionaryValue& response);
web::WebState* web_state_ = nullptr;
base::CallbackListSubscription subscription_;
// Cached value of the source ID representing the last navigation to have text
// fragments.
ukm::SourceId latest_source_id_;
// Cached value of the latest referrer's URL to have triggered a navigation
// with text fragments.
GURL latest_referrer_url_;
};
} // namespace web
#endif // IOS_WEB_TEXT_FRAGMENTS_TEXT_FRAGMENTS_MANAGER_IMPL_H_