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src/content/browser/host_zoom_level_context.h
Avi Drissman 4e1b7bc33d Update copyright headers in content/
The methodology used to generate this CL is documented in
https://crbug.com/1098010#c34.

No-Try: true
No-Presubmit: true
Bug: 1098010
Change-Id: I8c0f009d16350271f07d8e5e561085822cc9dd27
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3895935
Owners-Override: Avi Drissman <avi@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Auto-Submit: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1047456}
2022-09-15 14:03:50 +00:00

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1.6 KiB
C++

// 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 CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_
#define CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_
#include <memory>
#include "content/browser/host_zoom_map_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/zoom_level_delegate.h"
namespace content {
// This class manages a HostZoomMap and associates it with a ZoomLevelDelegate,
// if one is provided. It also serves to keep the zoom level machinery details
// separate from the owning StoragePartitionImpl. It must be destroyed on the
// UI thread.
class HostZoomLevelContext {
public:
explicit HostZoomLevelContext(
std::unique_ptr<ZoomLevelDelegate> zoom_level_delegate);
HostZoomLevelContext(const HostZoomLevelContext&) = delete;
HostZoomLevelContext& operator=(const HostZoomLevelContext&) = delete;
HostZoomMap* GetHostZoomMap() const { return host_zoom_map_impl_.get(); }
ZoomLevelDelegate* GetZoomLevelDelegate() const {
return zoom_level_delegate_.get();
}
private:
friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
friend class base::DeleteHelper<HostZoomLevelContext>;
~HostZoomLevelContext();
std::unique_ptr<HostZoomMapImpl> host_zoom_map_impl_;
// Release the delegate before the HostZoomMap, in case it is carrying
// any HostZoomMap::Subscription pointers.
std::unique_ptr<ZoomLevelDelegate> zoom_level_delegate_;
};
} // namespace content
#endif // CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_