/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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_SessionAccessibility_h_
#define mozilla_a11y_SessionAccessibility_h_

#include "GeneratedJNINatives.h"
#include "GeneratedJNIWrappers.h"
#include "nsAppShell.h"
#include "nsThreadUtils.h"
#include "nsWindow.h"

#define GECKOBUNDLE_START(name)                   \
  nsTArray<jni::String::LocalRef> _##name##_keys; \
  nsTArray<jni::Object::LocalRef> _##name##_values;

#define GECKOBUNDLE_PUT(name, key, value)                                 \
  _##name##_keys.AppendElement(jni::StringParam(NS_LITERAL_STRING(key))); \
  _##name##_values.AppendElement(value);

#define GECKOBUNDLE_FINISH(name)                                            \
  MOZ_ASSERT(_##name##_keys.Length() == _##name##_values.Length());         \
  auto _##name##_jkeys =                                                    \
      jni::ObjectArray::New<jni::String>(_##name##_keys.Length());          \
  auto _##name##_jvalues =                                                  \
      jni::ObjectArray::New<jni::Object>(_##name##_values.Length());        \
  for (size_t i = 0;                                                        \
       i < _##name##_keys.Length() && i < _##name##_values.Length(); i++) { \
    _##name##_jkeys->SetElement(i, _##name##_keys.ElementAt(i));            \
    _##name##_jvalues->SetElement(i, _##name##_values.ElementAt(i));        \
  }                                                                         \
  auto name =                                                               \
      mozilla::java::GeckoBundle::New(_##name##_jkeys, _##name##_jvalues);

namespace mozilla {
namespace a11y {

class AccessibleWrap;
class ProxyAccessible;
class RootAccessibleWrap;
class BatchData;

class SessionAccessibility final
    : public java::SessionAccessibility::NativeProvider::Natives<
          SessionAccessibility> {
 public:
  typedef java::SessionAccessibility::NativeProvider::Natives<
      SessionAccessibility>
      Base;

  SessionAccessibility(
      nsWindow::NativePtr<SessionAccessibility>* aPtr, nsWindow* aWindow,
      java::SessionAccessibility::NativeProvider::Param aSessionAccessibility)
      : mWindow(aPtr, aWindow), mSessionAccessibility(aSessionAccessibility) {
    SetAttached(true, nullptr);
  }

  void OnDetach(already_AddRefed<Runnable> aDisposer) {
    SetAttached(false, std::move(aDisposer));
  }

  const java::SessionAccessibility::NativeProvider::Ref&
  GetJavaAccessibility() {
    return mSessionAccessibility;
  }

  static void Init();
  static SessionAccessibility* GetInstanceFor(ProxyAccessible* aAccessible);
  static SessionAccessibility* GetInstanceFor(Accessible* aAccessible);

  // Native implementations
  using Base::AttachNative;
  using Base::DisposeNative;
  jni::Object::LocalRef GetNodeInfo(int32_t aID);
  void SetText(int32_t aID, jni::String::Param aText);
  void Click(int32_t aID);
  void StartNativeAccessibility();

  // Event methods
  void SendFocusEvent(AccessibleWrap* aAccessible);
  void SendScrollingEvent(AccessibleWrap* aAccessible, int32_t aScrollX,
                          int32_t aScrollY, int32_t aMaxScrollX,
                          int32_t aMaxScrollY);
  MOZ_CAN_RUN_SCRIPT
  void SendAccessibilityFocusedEvent(AccessibleWrap* aAccessible);
  void SendHoverEnterEvent(AccessibleWrap* aAccessible);
  void SendTextSelectionChangedEvent(AccessibleWrap* aAccessible,
                                     int32_t aCaretOffset);
  void SendTextTraversedEvent(AccessibleWrap* aAccessible, int32_t aStartOffset,
                              int32_t aEndOffset);
  void SendTextChangedEvent(AccessibleWrap* aAccessible, const nsString& aStr,
                            int32_t aStart, uint32_t aLen, bool aIsInsert,
                            bool aFromUser);
  void SendSelectedEvent(AccessibleWrap* aAccessible, bool aSelected);
  void SendClickedEvent(AccessibleWrap* aAccessible, bool aChecked);
  void SendWindowContentChangedEvent();
  void SendWindowStateChangedEvent(AccessibleWrap* aAccessible);
  void SendAnnouncementEvent(AccessibleWrap* aAccessible,
                             const nsString& aAnnouncement, uint16_t aPriority);

  // Cache methods
  void ReplaceViewportCache(
      const nsTArray<AccessibleWrap*>& aAccessibles,
      const nsTArray<BatchData>& aData = nsTArray<BatchData>());

  void ReplaceFocusPathCache(
      const nsTArray<AccessibleWrap*>& aAccessibles,
      const nsTArray<BatchData>& aData = nsTArray<BatchData>());

  void UpdateCachedBounds(
      const nsTArray<AccessibleWrap*>& aAccessibles,
      const nsTArray<BatchData>& aData = nsTArray<BatchData>());

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SessionAccessibility)

 private:
  ~SessionAccessibility() {}

  void SetAttached(bool aAttached, already_AddRefed<Runnable> aRunnable);
  RootAccessibleWrap* GetRoot();

  nsWindow::WindowPtr<SessionAccessibility> mWindow;  // Parent only
  java::SessionAccessibility::NativeProvider::GlobalRef mSessionAccessibility;
};

}  // namespace a11y
}  // namespace mozilla

#endif