using UnityEngine;

namespace UnityEditor.Graphs.Material
{
	public class ColorProperty : ShaderProperty
	{
		[SerializeField] private Color m_DefaultColor;

		public override object value
		{
			get { return m_DefaultColor; }
			set { m_DefaultColor = (Color) value; }
		}

		public Color defaultColor
		{
			get { return m_DefaultColor; }
			set { m_DefaultColor = value; }
		}

		public override void PropertyOnGUI(out bool nameChanged, out bool valuesChanged)
		{
			base.PropertyOnGUI(out nameChanged, out valuesChanged);
			EditorGUI.BeginChangeCheck();
			m_DefaultColor = EditorGUILayout.ColorField("Color", m_DefaultColor);
			valuesChanged |= EditorGUI.EndChangeCheck();
		}

		public override PropertyType propertyType
		{
			get { return PropertyType.Color; }
		}

		public override void GeneratePropertyBlock(PropertyGenerator visitor, GenerationMode generationMode)
		{
			visitor.AddShaderProperty(new ColorPropertyChunk(name, m_PropertyDescription, m_DefaultColor, false));
		}

		public override void GeneratePropertyUsages(ShaderGenerator visitor, GenerationMode generationMode)
		{
			visitor.AddShaderChunk("float4 " + name + ";", true);
		}

		public override string GenerateDefaultValue()
		{
			return "half4 (" + m_DefaultColor.r + "," + m_DefaultColor.g + "," + m_DefaultColor.b + "," + m_DefaultColor.a + ")";
		}
	}
}