// 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_WINDOW_DELEGATE_H_
#define VIEWS_WIDGET_NATIVE_WINDOW_DELEGATE_H_
#pragma once

namespace views {
namespace internal {

////////////////////////////////////////////////////////////////////////////////
// NativeWindowDelegate interface
//
//  An interface implemented by an object that receives notifications from a
//  NativeWindow implementation.
//
class NativeWindowDelegate {
 public:
  virtual ~NativeWindowDelegate() {}

  // Returns true if the window can be activated.
  virtual bool CanActivate() const = 0;

  virtual bool IsInactiveRenderingDisabled() const = 0;
  virtual void EnableInactiveRendering() = 0;

  // Returns true if the window is modal.
  virtual bool IsModal() const = 0;

  // Returns true if the window is a dialog box.
  virtual bool IsDialogBox() const = 0;

  // Returns true if the window is using a system native frame. Returns false if
  // it is rendering its own title bar, borders and controls.
  virtual bool IsUsingNativeFrame() const = 0;

  // Returns the smallest size the window can be resized to by the user.
  virtual gfx::Size GetMinimumSize() const = 0;

  // Returns the non-client component (see views/window/hit_test.h) containing
  // |point|, in client coordinates.
  virtual int GetNonClientComponent(const gfx::Point& point) const = 0;

  // Runs the specified native command. Returns true if the command is handled.
  virtual bool ExecuteCommand(int command_id) = 0;

  // Called just after the NativeWindow has been created.
  virtual void OnNativeWindowCreated(const gfx::Rect& bounds) = 0;

  // Called when the activation state of a window has changed.
  virtual void OnNativeWindowActivationChanged(bool active) = 0;

  // Called just before the native window is destroyed. This is the delegate's
  // last chance to do anything with the native window handle.
  virtual void OnNativeWindowDestroying() = 0;

  // Called just after the native window is destroyed.
  virtual void OnNativeWindowDestroyed() = 0;

  // Called when the native window's position or size has changed.
  virtual void OnNativeWindowBoundsChanged() = 0;
};

}  // namespace internal
}  // namespace views

#endif  // VIEWS_WIDGET_NATIVE_WINDOW_DELEGATE_H_