// This file was generated by the Gtk# code generator.
// Any changes made will be lost if regenerated.

namespace GstSharp {

	using System;
	using System.Runtime.InteropServices;

#region Autogenerated code
	[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
	internal delegate void TagForeachFuncNative(IntPtr list, IntPtr tag, IntPtr user_data);

	internal class TagForeachFuncInvoker {

		TagForeachFuncNative native_cb;
		IntPtr __data;
		GLib.DestroyNotify __notify;

		~TagForeachFuncInvoker ()
		{
			if (__notify == null)
				return;
			__notify (__data);
		}

		internal TagForeachFuncInvoker (TagForeachFuncNative native_cb) : this (native_cb, IntPtr.Zero, null) {}

		internal TagForeachFuncInvoker (TagForeachFuncNative native_cb, IntPtr data) : this (native_cb, data, null) {}

		internal TagForeachFuncInvoker (TagForeachFuncNative native_cb, IntPtr data, GLib.DestroyNotify notify)
		{
			this.native_cb = native_cb;
			__data = data;
			__notify = notify;
		}

		internal Gst.TagForeachFunc Handler {
			get {
				return new Gst.TagForeachFunc(InvokeNative);
			}
		}

		void InvokeNative (Gst.TagList list, string tag)
		{
			IntPtr native_tag = GLib.Marshaller.StringToPtrGStrdup (tag);
			native_cb (list == null ? IntPtr.Zero : list.Handle, native_tag, __data);
			GLib.Marshaller.Free (native_tag);
		}
	}

	internal class TagForeachFuncWrapper {

		public void NativeCallback (IntPtr list, IntPtr tag, IntPtr user_data)
		{
			try {
				managed (list == IntPtr.Zero ? null : (Gst.TagList) GLib.Opaque.GetOpaque (list, typeof (Gst.TagList), false), GLib.Marshaller.Utf8PtrToString (tag));
				if (release_on_call)
					gch.Free ();
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, false);
			}
		}

		bool release_on_call = false;
		GCHandle gch;

		public void PersistUntilCalled ()
		{
			release_on_call = true;
			gch = GCHandle.Alloc (this);
		}

		internal TagForeachFuncNative NativeDelegate;
		Gst.TagForeachFunc managed;

		public TagForeachFuncWrapper (Gst.TagForeachFunc managed)
		{
			this.managed = managed;
			if (managed != null)
				NativeDelegate = new TagForeachFuncNative (NativeCallback);
		}

		public static Gst.TagForeachFunc GetManagedDelegate (TagForeachFuncNative native)
		{
			if (native == null)
				return null;
			TagForeachFuncWrapper wrapper = (TagForeachFuncWrapper) native.Target;
			if (wrapper == null)
				return null;
			return wrapper.managed;
		}
	}
#endregion
}
