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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_WIN_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
#pragma once
#if defined(TOOLKIT_GTK)
#include <gtk/gtk.h>
#elif defined(OS_MACOSX)
#import <Cocoa/Cocoa.h>
#endif
#include "content/common/content_export.h"
#include "ui/gfx/native_widget_types.h"
#if defined(OS_MACOSX)
@protocol RenderWidgetHostViewMacDelegate;
#endif
namespace gfx {
class Size;
}
namespace ui {
class FocusStoreGtk;
}
namespace content {
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 a delegate to process drags not handled by content.
virtual WebDragDestDelegate* GetDragDestDelegate() = 0;
// Shows a context menu.
virtual void ShowContextMenu(const content::ContextMenuParams& params) = 0;
#if defined(OS_WIN) || defined(USE_AURA)
// These methods allow the embedder to intercept WebContentsViewWin's
// implementation of these WebContentsView methods. See the WebContentsView
// interface documentation for more information about these methods.
virtual void StoreFocus() = 0;
virtual void RestoreFocus() = 0;
virtual bool Focus() = 0;
virtual void TakeFocus(bool reverse) = 0;
virtual void SizeChanged(const gfx::Size& size) = 0;
#elif defined(TOOLKIT_GTK)
// Initializes the WebContentsViewDelegate.
virtual void Initialize(GtkWidget* expanded_container,
ui::FocusStoreGtk* focus_store) = 0;
// Returns the top widget that contains |view| passed in from WrapView. This
// is exposed through WebContentsViewGtk::GetNativeView() when a wrapper is
// supplied to a WebContentsViewGtk.
virtual gfx::NativeView GetNativeView() const = 0;
// Handles a focus event from the renderer process.
virtual void Focus() = 0;
// Gives the delegate a first chance at focus events from our render widget
// host, before the main view invokes its default behaviour. Returns TRUE if
// |return_value| has been set and that value should be returned to GTK+.
virtual gboolean OnNativeViewFocusEvent(GtkWidget* widget,
GtkDirectionType type,
gboolean* return_value) = 0;
#elif defined(OS_MACOSX)
// Returns a newly-created delegate for the RenderWidgetHostViewMac, to handle
// events on the responder chain.
virtual NSObject<RenderWidgetHostViewMacDelegate>*
CreateRenderWidgetHostViewDelegate(
RenderWidgetHost* render_widget_host) = 0;
#endif
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_WIN_DELEGATE_H_
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