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using System;
using System.Text.Json;
using System.Text.Json.Serialization;
using MonoGame.Extended.Gui.Controls;
namespace MonoGame.Extended.Gui.Serialization
{
public class ControlJsonConverter : JsonConverter<Control>
{
private readonly IGuiSkinService _guiSkinService;
private readonly ControlStyleJsonConverter _styleConverter;
private const string _styleProperty = "Style";
public ControlJsonConverter(IGuiSkinService guiSkinService, params Type[] customControlTypes)
{
_guiSkinService = guiSkinService;
_styleConverter = new ControlStyleJsonConverter(customControlTypes);
}
/// <inheritdoc />
public override bool CanConvert(Type typeToConvert) => typeToConvert == typeof(Control);
/// <inheritdoc />
public override Control Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
var style = _styleConverter.Read(ref reader, typeToConvert, options);
var template = GetControlTemplate(style);
var skin = _guiSkinService.Skin;
var control = skin.Create(style.TargetType, template);
var itemsControl = control as ItemsControl;
if (itemsControl != null)
{
object childControls;
if (style.TryGetValue(nameof(ItemsControl.Items), out childControls))
{
var controlCollection = childControls as ControlCollection;
if (controlCollection != null)
{
foreach (var child in controlCollection)
itemsControl.Items.Add(child);
}
}
}
style.Apply(control);
return control;
}
/// <inheritdoc />
public override void Write(Utf8JsonWriter writer, Control value, JsonSerializerOptions options) { }
private static string GetControlTemplate(ControlStyle style)
{
object template;
if (style.TryGetValue(_styleProperty, out template))
return template as string;
return null;
}
}
}
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