/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:expandtab:shiftwidth=2:tabstop=2:

 */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_a11y_ApplicationAccessible_h__

#define mozilla_a11y_ApplicationAccessible_h__

#include "AccessibleWrap.h"

#include "nsIMutableArray.h"

#include "nsIXULAppInfo.h"

namespace mozilla {

namespace a11y {

/**

 * ApplicationAccessible is for the whole application of Mozilla.

 * Only one instance of ApplicationAccessible exists for one Mozilla instance.

 * And this one should be created when Mozilla Startup (if accessibility

 * feature has been enabled) and destroyed when Mozilla Shutdown.

 *

 * All the accessibility objects for toplevel windows are direct children of

 * the ApplicationAccessible instance.

 */

class ApplicationAccessible : public AccessibleWrap

{

public:

  ApplicationAccessible();

  NS_INLINE_DECL_REFCOUNTING_INHERITED(ApplicationAccessible, AccessibleWrap)

  // Accessible

  virtual void Shutdown() override;

  virtual nsIntRect Bounds() const override;

  virtual nsRect BoundsInAppUnits() const override;

  virtual already_AddRefed<nsIPersistentProperties> NativeAttributes() override;

  virtual GroupPos GroupPosition() override;

  virtual ENameValueFlag Name(nsString& aName) const override;

  virtual void ApplyARIAState(uint64_t* aState) const override;

  virtual void Description(nsString& aDescription) override;

  virtual void Value(nsString& aValue) const override;

  virtual mozilla::a11y::role NativeRole() const override;

  virtual uint64_t State() override;

  virtual uint64_t NativeState() const override;

  virtual Relation RelationByType(RelationType aType) const override;

  virtual Accessible* ChildAtPoint(int32_t aX, int32_t aY,

                                   EWhichChildAtPoint aWhichChild) override;

  virtual Accessible* FocusedChild() override;

  // ActionAccessible

  virtual KeyBinding AccessKey() const override;

  // ApplicationAccessible

  void Init();

  void AppName(nsAString& aName) const

  {

    MOZ_ASSERT(mAppInfo, "no application info");

    if (mAppInfo) {

      nsAutoCString cname;

      mAppInfo->GetName(cname);

      AppendUTF8toUTF16(cname, aName);

    }

  }

  void AppVersion(nsAString& aVersion) const

  {

    MOZ_ASSERT(mAppInfo, "no application info");

    if (mAppInfo) {

      nsAutoCString cversion;

      mAppInfo->GetVersion(cversion);

      AppendUTF8toUTF16(cversion, aVersion);

    }

  }

  void PlatformName(nsAString& aName) const

  {

    aName.AssignLiteral("Gecko");

  }

  void PlatformVersion(nsAString& aVersion) const

  {

    MOZ_ASSERT(mAppInfo, "no application info");

    if (mAppInfo) {

      nsAutoCString cversion;

      mAppInfo->GetPlatformVersion(cversion);

      AppendUTF8toUTF16(cversion, aVersion);

    }

  }

protected:

  virtual ~ApplicationAccessible() {}

  // Accessible

  virtual Accessible* GetSiblingAtOffset(int32_t aOffset,

                                         nsresult *aError = nullptr) const override;

private:

  nsCOMPtr<nsIXULAppInfo> mAppInfo;

};

inline ApplicationAccessible*

Accessible::AsApplication()

{

  return IsApplication() ? static_cast<ApplicationAccessible*>(this) : nullptr;

}

} // namespace a11y

} // namespace mozilla

#endif