using System;

using UnityEngine;

namespace Java.Util
{
    public class Observable : global::Google.LibraryWrapper.Java.JavaObject
    {
        private static readonly IntPtr _classObject;
        private static readonly IntPtr _cachedConstructorId0;
        private static readonly IntPtr _cachedMethodId0;
        private static readonly IntPtr _cachedMethodId1;
        private static readonly IntPtr _cachedMethodId2;
        private static readonly IntPtr _cachedMethodId3;
        private static readonly IntPtr _cachedMethodId4;
        private static readonly IntPtr _cachedMethodId5;
        private static readonly IntPtr _cachedMethodId6;

        static Observable()
        {
            AndroidJNI.AttachCurrentThread();
            IntPtr classObject = AndroidJNI.FindClass("java/util/Observable");
            _classObject = AndroidJNI.NewGlobalRef(classObject);
            AndroidJNI.DeleteLocalRef(classObject);
            _cachedConstructorId0 = AndroidJNI.GetMethodID(_classObject, "<init>", "()V");
            _cachedMethodId0 = AndroidJNI.GetMethodID(_classObject, "addObserver", "(Ljava/util/Observer;)V");
            _cachedMethodId1 = AndroidJNI.GetMethodID(_classObject, "deleteObserver", "(Ljava/util/Observer;)V");
            _cachedMethodId2 = AndroidJNI.GetMethodID(_classObject, "notifyObservers", "()V");
            _cachedMethodId3 = AndroidJNI.GetMethodID(_classObject, "notifyObservers", "(Ljava/lang/Object;)V");
            _cachedMethodId4 = AndroidJNI.GetMethodID(_classObject, "deleteObservers", "()V");
            _cachedMethodId5 = AndroidJNI.GetMethodID(_classObject, "hasChanged", "()Z");
            _cachedMethodId6 = AndroidJNI.GetMethodID(_classObject, "countObservers", "()I");
        }

        public Observable() : base(IntPtr.Zero)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                IntPtr rawObject_ = AndroidJNI.NewObject(_classObject, _cachedConstructorId0, args_);
                _rawObject = AndroidJNI.NewGlobalRef(rawObject_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public Observable(IntPtr rawObject) : base(IntPtr.Zero)
        {
            if (rawObject == IntPtr.Zero)
            {
                return;
            }
            try
            {
                AndroidJNI.PushLocalFrame(0);
                IntPtr instanceClassObject_ = AndroidJNI.GetObjectClass(rawObject);
                if (!AndroidJNI.IsAssignableFrom(instanceClassObject_, _classObject))
                {
                    throw new ArgumentException("The provided reference is not an instance of Observable.");
                }
                _rawObject = AndroidJNI.NewGlobalRef(rawObject);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void AddObserver(global::Java.Util.Observer o)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = o.GetRawObject() } };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId0, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void DeleteObserver(global::Java.Util.Observer o)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = o.GetRawObject() } };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId1, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void NotifyObservers()
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId2, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void NotifyObservers(global::Google.LibraryWrapper.Java.JavaObject arg)
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] { new jvalue { l = arg.GetRawObject() } };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId3, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public void DeleteObservers()
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                AndroidJNI.CallVoidMethod(_rawObject, _cachedMethodId4, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public bool HasChanged()
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                return AndroidJNI.CallBooleanMethod(_rawObject, _cachedMethodId5, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public int CountObservers()
        {
            try
            {
                AndroidJNI.PushLocalFrame(0);
                jvalue[] args_ = new jvalue[] {  };
                return AndroidJNI.CallIntMethod(_rawObject, _cachedMethodId6, args_);
            }
            finally
            {
                AndroidJNI.PopLocalFrame(IntPtr.Zero);
            }
        }

        public static explicit operator IntPtr(Observable wrapper)
        {
            return wrapper.GetRawObject();
        }

        public static explicit operator Observable(IntPtr rawObject)
        {
            return new Observable(rawObject);
        }

        public new static IntPtr GetRawClass()
        {
            return AndroidJNI.NewLocalRef(_classObject);
        }
    } // end class Observable
} // end namespace Java.Util
