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// Copyright 2014 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_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_
#define COMPONENTS_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_
#include <memory>
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "components/dom_distiller/core/distiller_page.h"
#include "ios/web/public/web_state_observer.h"
#include "url/gurl.h"
namespace web {
class BrowserState;
class WebState;
}
namespace dom_distiller {
class DistillerPageMediaBlocker;
// Loads URLs and injects JavaScript into a page, extracting the distilled page
// content.
class DistillerPageIOS : public DistillerPage, public web::WebStateObserver {
public:
explicit DistillerPageIOS(web::BrowserState* browser_state);
DistillerPageIOS(const DistillerPageIOS&) = delete;
DistillerPageIOS& operator=(const DistillerPageIOS&) = delete;
~DistillerPageIOS() override;
protected:
void DistillPageImpl(const GURL& url, const std::string& script) override;
// Sets the WebState that will be used for the distillation. Do not call
// between |DistillPageImpl| and |OnDistillationDone|.
virtual void AttachWebState(std::unique_ptr<web::WebState> web_state);
// Release the WebState used for distillation. Do not call between
// |DistillPageImpl| and |OnDistillationDone|.
virtual std::unique_ptr<web::WebState> DetachWebState();
// Return the current WebState.
virtual web::WebState* CurrentWebState();
// Called by |web_state_observer_| once the page has finished loading.
virtual void OnLoadURLDone(
web::PageLoadCompletionStatus load_completion_status);
private:
// Called once the |script_| has been evaluated on the page.
void HandleJavaScriptResult(const base::Value* result);
// web::WebStateObserver implementation.
void PageLoaded(
web::WebState* web_state,
web::PageLoadCompletionStatus load_completion_status) override;
void DidStartLoading(web::WebState* web_state) override;
void DidStopLoading(web::WebState* web_state) override;
void WebStateDestroyed(web::WebState* web_state) override;
GURL url_;
std::string script_;
raw_ptr<web::BrowserState> browser_state_;
std::unique_ptr<web::WebState> web_state_;
std::unique_ptr<DistillerPageMediaBlocker> media_blocker_;
bool distilling_navigation_ = false;
// Used to store whether the owned WebState is currently loading or not.
// TODO(crbug.com/40548473): this is a work-around as WebState::IsLoading()
// is/was not returning the expected value when an SLL interstitial is
// blocked. Remove this and use WebState::IsLoading() when WebState has
// been fixed.
bool loading_ = false;
base::ScopedObservation<web::WebState, web::WebStateObserver>
web_state_observation_{this};
base::WeakPtrFactory<DistillerPageIOS> weak_ptr_factory_;
};
} // namespace dom_distiller
#endif // COMPONENTS_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_
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