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// Copyright 2014 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_ZOOM_CHROME_ZOOM_LEVEL_OTR_DELEGATE_H_
#define CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_OTR_DELEGATE_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/host_zoom_map.h"
#include "content/public/browser/zoom_level_delegate.h"
namespace ui_zoom {
class ZoomEventManager;
}
namespace chrome {
// This class is a light-weight version of ChromeZoomLevelPrefs and is used
// to connect an OTR StoragePartition's HostZoomMap to the OTR profile's
// ZoomEventManager.
class ChromeZoomLevelOTRDelegate : public content::ZoomLevelDelegate {
public:
ChromeZoomLevelOTRDelegate(
base::WeakPtr<ui_zoom::ZoomEventManager> zoom_event_manager);
~ChromeZoomLevelOTRDelegate() override;
// content::ZoomLevelDelegate
void InitHostZoomMap(content::HostZoomMap* host_zoom_map) override;
private:
// This is a callback function that receives notifications from HostZoomMap
// when per-host zoom levels change. It is used to update the per-host
// zoom levels (if any) managed by this class (for its associated partition).
void OnZoomLevelChanged(const content::HostZoomMap::ZoomLevelChange& change);
base::WeakPtr<ui_zoom::ZoomEventManager> zoom_event_manager_;
content::HostZoomMap* host_zoom_map_;
scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
DISALLOW_COPY_AND_ASSIGN(ChromeZoomLevelOTRDelegate);
};
} // namespace chrome
#endif // CHROME_BROWSER_UI_ZOOM_CHROME_ZOOM_LEVEL_OTR_DELEGATE_H_
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