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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_COMMERCE_IOS_BROWSER_COMMERCE_TAB_HELPER_H_
#define COMPONENTS_COMMERCE_IOS_BROWSER_COMMERCE_TAB_HELPER_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "components/commerce/core/shopping_service.h"
#include "components/commerce/core/web_wrapper.h"
#include "components/commerce/ios/browser/web_state_wrapper.h"
#include "ios/web/public/web_state_observer.h"
#include "ios/web/public/web_state_user_data.h"
namespace web {
class NavigationContext;
class WebState;
} // namespace web
namespace commerce {
// This tab helper creates and maintains a WebWrapper that is backed by
// WebState. Events that occur on the wrapper are reported back to the
// shopping service where they are used by various commerce features.
class CommerceTabHelper : public web::WebStateObserver,
public web::WebStateUserData<CommerceTabHelper> {
public:
~CommerceTabHelper() override;
CommerceTabHelper(const CommerceTabHelper& other) = delete;
CommerceTabHelper& operator=(const CommerceTabHelper& other) = delete;
// web::WebStateObserver implementation
void DidFinishNavigation(web::WebState* web_state,
web::NavigationContext* navigation_context) override;
void DidStopLoading(web::WebState* web_state) override;
void PageLoaded(
web::WebState* web_state,
web::PageLoadCompletionStatus load_completion_status) override;
void WasShown(web::WebState* web_state) override;
void WebStateDestroyed(web::WebState* web_state) override;
private:
friend class web::WebStateUserData<CommerceTabHelper>;
CommerceTabHelper(web::WebState* contents,
bool is_off_the_record,
ShoppingService* shopping_service);
const bool is_off_the_record_;
std::unique_ptr<WebStateWrapper> web_wrapper_;
raw_ptr<ShoppingService> shopping_service_;
// Automatically remove this observer from its host when destroyed.
base::ScopedObservation<web::WebState, web::WebStateObserver>
scoped_observation_{this};
// The url from the previous successful main frame navigation. This will be
// empty if this is the first navigation for this tab or post-restart. We keep
// track of this because the URL kepkt by the backing WebContents will have
// changed before we get the signal for it.
GURL previous_main_frame_url_;
};
} // namespace commerce
#endif // COMPONENTS_COMMERCE_IOS_BROWSER_COMMERCE_TAB_HELPER_H_
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