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// Copyright 2013 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_DOM_DISTILLER_CONTENT_DISTILLER_PAGE_WEB_CONTENTS_H_
#define COMPONENTS_DOM_DISTILLER_CONTENT_DISTILLER_PAGE_WEB_CONTENTS_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "components/dom_distiller/core/distiller_page.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "url/gurl.h"
namespace content {
class RenderViewHost;
}
using content::RenderViewHost;
namespace dom_distiller {
class DistillerContext;
class DistillerPageWebContentsFactory : public DistillerPageFactory {
public:
explicit DistillerPageWebContentsFactory(
content::BrowserContext* browser_context)
: DistillerPageFactory(), browser_context_(browser_context) {}
virtual ~DistillerPageWebContentsFactory() {}
virtual scoped_ptr<DistillerPage> CreateDistillerPage() const OVERRIDE;
private:
content::BrowserContext* browser_context_;
};
class DistillerPageWebContents : public DistillerPage,
public content::WebContentsObserver {
public:
DistillerPageWebContents(content::BrowserContext* browser_context);
virtual ~DistillerPageWebContents();
// content::WebContentsObserver implementation.
virtual void DocumentLoadedInFrame(int64 frame_id,
RenderViewHost* render_view_host) OVERRIDE;
virtual void DidFailLoad(int64 frame_id,
const GURL& validated_url,
bool is_main_frame,
int error_code,
const base::string16& error_description,
RenderViewHost* render_view_host) OVERRIDE;
protected:
virtual void DistillPageImpl(const GURL& gurl,
const std::string& script) OVERRIDE;
private:
enum State {
// The page distiller is idle.
IDLE,
// A page is currently loading.
LOADING_PAGE,
// There was an error processing the page.
PAGELOAD_FAILED,
// JavaScript is executing within the context of the page. When the
// JavaScript completes, the state will be returned to |IDLE|.
EXECUTING_JAVASCRIPT
};
// Injects and executes JavaScript in the context of a loaded page. This
// must only be called after the page has successfully loaded.
void ExecuteJavaScript();
// Called when the distillation is done or if the page load failed.
void OnWebContentsDistillationDone(const GURL& page_url,
const base::Value* value);
// The current state of the |DistillerPage|, initially |IDLE|.
State state_;
// The JavaScript to inject to extract content.
std::string script_;
scoped_ptr<content::WebContents> web_contents_;
content::BrowserContext* browser_context_;
DISALLOW_COPY_AND_ASSIGN(DistillerPageWebContents);
};
} // namespace dom_distiller
#endif // COMPONENTS_DOM_DISTILLER_CONTENT_DISTILLER_PAGE_WEB_CONTENTS_H_
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