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// Copyright (c) 2012 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_UI_METRO_PIN_TAB_HELPER_WIN_H_
#define CHROME_BROWSER_UI_METRO_PIN_TAB_HELPER_WIN_H_
#include <vector>
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "content/public/common/favicon_url.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/image/image_skia.h"
namespace gfx {
class Size;
}
// Per-tab class to help manage metro pinning.
class MetroPinTabHelper
: public content::WebContentsObserver,
public content::WebContentsUserData<MetroPinTabHelper> {
public:
virtual ~MetroPinTabHelper();
bool IsPinned() const;
void TogglePinnedToStartScreen();
// content::WebContentsObserver overrides:
virtual void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) override;
virtual void DidUpdateFaviconURL(
const std::vector<content::FaviconURL>& candidates) override;
private:
// The FaviconDownloader class handles downloading the favicons when a page
// is being pinned. After it has downloaded any available favicons it will
// continue on with the page pinning action.
class FaviconChooser;
explicit MetroPinTabHelper(content::WebContents* web_contents);
friend class content::WebContentsUserData<MetroPinTabHelper>;
// Favicon download callback.
void DidDownloadFavicon(int id,
int http_status_code,
const GURL& image_url,
const std::vector<SkBitmap>& bitmaps,
const std::vector<gfx::Size>& original_bitmap_sizes);
void UnPinPageFromStartScreen();
// Called by the |favicon_chooser_| when it has finished.
void FaviconDownloaderFinished();
// Candidate Favicon URLs for the current page.
std::vector<content::FaviconURL> favicon_url_candidates_;
// The currently active FaviconChooser, if there is one.
scoped_ptr<FaviconChooser> favicon_chooser_;
DISALLOW_COPY_AND_ASSIGN(MetroPinTabHelper);
};
#endif // CHROME_BROWSER_UI_METRO_PIN_TAB_HELPER_WIN_H_
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