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// Copyright 2015 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_RENDERER_HOST_RENDER_WIDGET_HOST_OWNER_DELEGATE_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_OWNER_DELEGATE_H_
#include "build/build_config.h"
#include "third_party/blink/public/common/widget/visual_properties.h"
namespace blink {
namespace web_pref {
struct WebPreferences;
}
class WebMouseEvent;
}
namespace content {
struct NativeWebKeyboardEvent;
//
// RenderWidgetHostOwnerDelegate
//
// An interface implemented by an object owning a RenderWidgetHost. This is
// intended to be temporary until the RenderViewHostImpl and
// RenderWidgetHostImpl classes are disentangled; see http://crbug.com/542477
// and http://crbug.com/478281.
class RenderWidgetHostOwnerDelegate {
public:
// The RenderWidgetHost got the focus.
virtual void RenderWidgetGotFocus() = 0;
// The RenderWidgetHost lost the focus.
virtual void RenderWidgetLostFocus() = 0;
// The RenderWidgetHost forwarded a mouse event.
virtual void RenderWidgetDidForwardMouseEvent(
const blink::WebMouseEvent& mouse_event) = 0;
// The RenderWidgetHost wants to forward a keyboard event; returns whether
// it's allowed to do so.
virtual bool MayRenderWidgetForwardKeyboardEvent(
const NativeWebKeyboardEvent& key_event) = 0;
// Allow OwnerDelegate to control whether its RenderWidgetHost contributes
// priority to the RenderProcessHost.
virtual bool ShouldContributePriorityToProcess() = 0;
// When false, this allows the renderer's output to be transparent. By default
// the renderer's background is forced to be opaque.
virtual void SetBackgroundOpaque(bool opaque) = 0;
// Returns true if the main frame is active, false if it is swapped out.
virtual bool IsMainFrameActive() = 0;
// Returns true if all widgets will never be user-visible, and thus do not
// need to generate pixels for display.
virtual bool IsNeverComposited() = 0;
// Returns the WebkitPreferences for the page. The preferences are shared
// between all widgets for the page.
virtual blink::web_pref::WebPreferences GetWebkitPreferencesForWidget() = 0;
protected:
virtual ~RenderWidgetHostOwnerDelegate() {}
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_OWNER_DELEGATE_H_
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