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// Copyright (c) 2012 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_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_H_
#if defined(__OBJC__)
#import <Cocoa/Cocoa.h>
#endif
#include "base/callback_forward.h"
#include "content/common/content_export.h"
#include "ui/gfx/native_widget_types.h"
#if defined(__OBJC__)
@protocol RenderWidgetHostViewMacDelegate;
#endif
namespace gfx {
class Rect;
class Size;
}
namespace ui {
class GestureEvent;
class MouseEvent;
}
namespace content {
class RenderFrameHost;
class RenderWidgetHost;
class WebDragDestDelegate;
struct ContextMenuParams;
// This interface allows a client to extend the functionality of the
// WebContentsView implementation.
class CONTENT_EXPORT WebContentsViewDelegate {
public:
virtual ~WebContentsViewDelegate();
// Returns the native window containing the WebContents, or nullptr if the
// WebContents is not in any window.
virtual gfx::NativeWindow GetNativeWindow();
// Returns a delegate to process drags not handled by content.
virtual WebDragDestDelegate* GetDragDestDelegate();
// Shows a context menu.
virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
const ContextMenuParams& params);
// These methods allow the embedder to intercept a WebContentsView's
// implementation of these methods. See the WebContentsView interface
// documentation for more information about these methods.
virtual void StoreFocus();
virtual void RestoreFocus();
virtual bool Focus();
virtual void TakeFocus(bool reverse);
virtual void SizeChanged(const gfx::Size& size);
// Shows a popup window containing the |zoomed_bitmap| of web content with
// more than one link, allowing the user to more easily select which link
// they were trying to touch. |target_rect| is the rectangle in DIPs in the
// coordinate system of |content| that has been scaled up in |zoomed_bitmap|.
// Should the popup receive any gesture events they should be translated back
// to the coordinate system of |content| and then provided to the |callback|
// for forwarding on to the original scale web content.
virtual void ShowDisambiguationPopup(
const gfx::Rect& target_rect,
const SkBitmap& zoomed_bitmap,
const gfx::NativeView content,
const base::Callback<void(ui::GestureEvent*)>& gesture_cb,
const base::Callback<void(ui::MouseEvent*)>& mouse_cb);
// Hides the link disambiguation popup window if it is showing, otherwise does
// nothing.
virtual void HideDisambiguationPopup();
// Returns a newly-created delegate for the RenderWidgetHostViewMac, to handle
// events on the responder chain.
#if defined(__OBJC__)
virtual NSObject<RenderWidgetHostViewMacDelegate>*
CreateRenderWidgetHostViewDelegate(
RenderWidgetHost* render_widget_host);
#else
virtual void* CreateRenderWidgetHostViewDelegate(
RenderWidgetHost* render_widget_host);
#endif
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_DELEGATE_H_