30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
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// Copyright (c) 2023 Microsoft, GmbH
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_BROWSER_WEB_CONTENTS_ZOOM_OBSERVER_H_
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#define ELECTRON_SHELL_BROWSER_WEB_CONTENTS_ZOOM_OBSERVER_H_
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#include "shell/browser/web_contents_zoom_controller.h"
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namespace electron {
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// Interface for objects that wish to be notified of changes in
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// WebContentsZoomController.
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class WebContentsZoomObserver : public base::CheckedObserver {
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public:
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// Fired when the ZoomController is destructed. Observers should deregister
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// themselves from the ZoomObserver in this event handler. Note that
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// ZoomController::FromWebContents() returns nullptr at this point already.
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virtual void OnZoomControllerDestroyed(
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WebContentsZoomController* zoom_controller) = 0;
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// Notification that the zoom percentage has changed.
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virtual void OnZoomChanged(
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const WebContentsZoomController::ZoomChangedEventData& data) {}
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};
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} // namespace electron
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#endif // ELECTRON_SHELL_BROWSER_WEB_CONTENTS_ZOOM_OBSERVER_H_
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