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// Copyright 2016 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 CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_
#define CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_
#include "content/common/content_export.h"
namespace blink {
class WebMouseEvent;
}
namespace content {
//
// RenderWidgetOwnerDelegate
//
// An interface implemented by an object owning a RenderWidget. This is
// intended to be temporary until the RenderViewImpl and RenderWidget classes
// are disentangled; see https://crbug.com/583347 and https://crbug.com/478281.
class CONTENT_EXPORT RenderWidgetOwnerDelegate {
public:
// Returns the WebWidget if the delegate has one. Otherwise it returns null,
// and RenderWidget will fall back to its own WebWidget.
virtual blink::WebWidget* GetWebWidgetForWidget() const = 0;
// As in RenderWidgetInputHandlerDelegate. Return true if the event was
// handled.
virtual bool RenderWidgetWillHandleMouseEventForWidget(
const blink::WebMouseEvent& event) = 0;
// See comment in RenderWidgetHost::SetActive().
virtual void SetActiveForWidget(bool active) = 0;
// See comment in RenderWidgetHostImpl::SetBackgroundOpaque().
virtual void SetBackgroundOpaqueForWidget(bool opaque) = 0;
// Returns whether multiple windows are allowed for the widget. If true, then
// Show() may be called more than once.
virtual bool SupportsMultipleWindowsForWidget() = 0;
// Called after RenderWidget services WebWidgetClient::DidHandleGestureEvent()
// if the event was not cancelled.
virtual void DidHandleGestureEventForWidget(
const blink::WebGestureEvent& event) = 0;
// ==================================
// These methods called during closing of a RenderWidget.
//
// Called when RenderWidget is closed that was "created for a frame".
virtual void OverrideCloseForWidget() = 0;
// Called after closing the RenderWidget and destroying the WebView.
virtual void DidCloseWidget() = 0;
// ==================================
// ==================================
// These methods called during handling of a SynchronizeVisualProperties
// message to handle updating state on the delegate.
//
// Called during handling a SynchronizeVisualProperties message, with the new
// size that will be applied to the RenderWidget. The size in the RenderWidget
// has not yet changed when this method is called, as it is changed later.
virtual void ApplyNewSizeForWidget(const gfx::Size& old_size,
const gfx::Size& new_size) = 0;
// Called during handling a SynchronizeVisualProperties message, with the new
// display mode that will be applied to the RenderWidget. The display mode in
// the RenderWidget is already changed when this method is called.
virtual void ApplyNewDisplayModeForWidget(
const blink::WebDisplayMode& new_display_mode) = 0;
// Called during handling a SynchronizeVisualProperties message, if auto
// resize is enabled, with the new auto size limits.
virtual void ApplyAutoResizeLimitsForWidget(const gfx::Size& min_size,
const gfx::Size& max_size) = 0;
// Called during handling a SynchronizeVisualProperties message, if auto
// resize was enabled but is being disabled.
virtual void DisableAutoResizeForWidget() = 0;
// Called during handling a SynchronizeVisualProperties message, if the
// message informed that the focused node should be scrolled into view.
virtual void ScrollFocusedNodeIntoViewForWidget() = 0;
// ==================================
// Called when RenderWidget receives a SetFocus event.
virtual void DidReceiveSetFocusEventForWidget() = 0;
// Called after RenderWidget changes focus.
virtual void DidChangeFocusForWidget() = 0;
// Called to get the current URL if it exists or a hardcoded fallback.
virtual GURL GetURLForGraphicsContext3DForWidget() = 0;
// Called when the RenderWidget handles
// LayerTreeViewDelegate::DidCommitCompositorFrame().
virtual void DidCommitCompositorFrameForWidget() = 0;
// Called when the RenderWidget handles
// LayerTreeViewDelegate::DidCompletePageScaleAnimation().
virtual void DidCompletePageScaleAnimationForWidget() = 0;
// Called to resize the WebWidget, so the delegate may change how resize
// happens.
virtual void ResizeWebWidgetForWidget(
const gfx::Size& size,
float top_controls_height,
float bottom_controls_height,
bool browser_controls_shrink_blink_size) = 0;
// Called to schedule an animation on the WebWidgetClient.
virtual void RequestScheduleAnimationForWidget() = 0;
// Called when RenderWidget services RenderWidgetScreenMetricsEmulatorDelegate
// SetScreenMetricsEmulationParameters().
virtual void SetScreenMetricsEmulationParametersForWidget(
bool enabled,
const blink::WebDeviceEmulationParams& params) = 0;
protected:
virtual ~RenderWidgetOwnerDelegate() {}
};
} // namespace content
#endif // CONTENT_RENDERER_RENDER_WIDGET_OWNER_DELEGATE_H_