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using System.Collections.Generic;
using Microsoft.Xna.Framework;
namespace MonoGame.Extended.Gui.Controls
{
public abstract class CompositeControl : Control
{
protected CompositeControl()
{
}
protected bool IsDirty { get; set; } = true;
public abstract object Content { get; set; }
protected abstract Control Template { get; }
public override IEnumerable<Control> Children
{
get
{
var control = Template;
if (control != null)
yield return control;
}
}
public override void InvalidateMeasure()
{
base.InvalidateMeasure();
IsDirty = true;
}
public override Size GetContentSize(IGuiContext context)
{
var control = Template;
if (control != null)
return Template.CalculateActualSize(context);
return Size.Empty;
}
public override void Update(IGuiContext context, float deltaSeconds)
{
var control = Template;
if (control != null)
{
if (IsDirty)
{
control.Parent = this;
control.ActualSize = ContentRectangle.Size;
control.Position = new Point(Padding.Left, Padding.Top);
control.InvalidateMeasure();
IsDirty = false;
}
}
}
public override void Draw(IGuiContext context, IGuiRenderer renderer, float deltaSeconds)
{
base.Draw(context, renderer, deltaSeconds);
var control = Template;
control?.Draw(context, renderer, deltaSeconds);
}
}
}
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