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// Copyright (c) 2011 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 VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_
#define VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_
#pragma once
namespace gfx {
class Canvas;
class Size;
}
namespace views {
namespace internal {
////////////////////////////////////////////////////////////////////////////////
// NativeWidgetDelegate
//
// An interface implemented by the object that handles events sent by a
// NativeWidget implementation.
//
class NativeWidgetDelegate {
public:
virtual ~NativeWidgetDelegate() {}
// Called when native focus moves from one native view to another.
virtual void OnNativeFocus(gfx::NativeView focused_view) = 0;
virtual void OnNativeBlur(gfx::NativeView focused_view) = 0;
// Called when the native widget is created.
virtual void OnNativeWidgetCreated() = 0;
// Called when the NativeWidget changed size to |new_size|.
virtual void OnSizeChanged(const gfx::Size& new_size) = 0;
// Returns true if the delegate has a FocusManager.
virtual bool HasFocusManager() const = 0;
// Paints the rootview in the canvas. This will also refresh the compositor
// tree if necessary when accelerated painting is enabled.
virtual void OnPaint(gfx::Canvas* canvas) = 0;
};
} // namespace internal
} // namespace views
#endif // VIEWS_WIDGET_NATIVE_WIDGET_DELEGATE_H_
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