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Source/Editor/CustomEditors/Values/CustomValueContainer.cs

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+// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
+
+using System;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+
+namespace FlaxEditor.CustomEditors
+{
+    /// <summary>
+    /// Custom <see cref="ValueContainer"/> for any type of storage and data management logic.
+    /// </summary>
+    /// <seealso cref="FlaxEditor.CustomEditors.ValueContainer" />
+    [HideInEditor]
+    public class CustomValueContainer : ValueContainer
+    {
+        /// <summary>
+        /// Get value delegate.
+        /// </summary>
+        /// <param name="instance">The parent object instance.</param>
+        /// <param name="index">The index (for multi selected objects).</param>
+        /// <returns>The value.</returns>
+        public delegate object GetDelegate(object instance, int index);
+
+        /// <summary>
+        /// Set value delegate.
+        /// </summary>
+        /// <param name="instance">The parent object instance.</param>
+        /// <param name="index">The index (for multi selected objects).</param>
+        /// <param name="value">The value.</param>
+        public delegate void SetDelegate(object instance, int index, object value);
+
+        private readonly GetDelegate _getter;
+        private readonly SetDelegate _setter;
+        private readonly object[] _attributes;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CustomValueContainer"/> class.
+        /// </summary>
+        /// <param name="valueType">Type of the value.</param>
+        /// <param name="getter">The value getter.</param>
+        /// <param name="setter">The value setter.</param>
+        /// <param name="attributes">The custom type attributes used to override the value editor logic or appearance (eg. instance of <see cref="LimitAttribute"/>).</param>
+        public CustomValueContainer(ScriptType valueType, GetDelegate getter, SetDelegate setter, object[] attributes = null)
+        : base(ScriptMemberInfo.Null, valueType)
+        {
+            if (getter == null || setter == null)
+                throw new ArgumentNullException();
+
+            _getter = getter;
+            _setter = setter;
+            _attributes = attributes;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CustomValueContainer"/> class.
+        /// </summary>
+        /// <param name="valueType">Type of the value.</param>
+        /// <param name="initialValue">The initial value.</param>
+        /// <param name="getter">The value getter.</param>
+        /// <param name="setter">The value setter.</param>
+        /// <param name="attributes">The custom type attributes used to override the value editor logic or appearance (eg. instance of <see cref="LimitAttribute"/>).</param>
+        public CustomValueContainer(ScriptType valueType, object initialValue, GetDelegate getter, SetDelegate setter, object[] attributes = null)
+        : this(valueType, getter, setter, attributes)
+        {
+            Add(initialValue);
+        }
+
+        /// <inheritdoc />
+        public override object[] GetAttributes()
+        {
+            return _attributes ?? base.GetAttributes();
+        }
+
+        /// <inheritdoc />
+        public override void Refresh(ValueContainer instanceValues)
+        {
+            if (instanceValues == null || instanceValues.Count != Count)
+                throw new ArgumentException();
+
+            for (int i = 0; i < Count; i++)
+            {
+                var v = instanceValues[i];
+                this[i] = _getter(v, i);
+            }
+        }
+
+        /// <inheritdoc />
+        public override void Set(ValueContainer instanceValues, object value)
+        {
+            if (instanceValues == null || instanceValues.Count != Count)
+                throw new ArgumentException();
+
+            for (int i = 0; i < Count; i++)
+            {
+                var v = instanceValues[i];
+                _setter(v, i, value);
+                this[i] = value;
+            }
+        }
+
+        /// <inheritdoc />
+        public override void Set(ValueContainer instanceValues, ValueContainer values)
+        {
+            if (instanceValues == null || instanceValues.Count != Count)
+                throw new ArgumentException();
+            if (values == null || values.Count != Count)
+                throw new ArgumentException();
+
+            for (int i = 0; i < Count; i++)
+            {
+                var v = instanceValues[i];
+                var value = ((CustomValueContainer)values)[i];
+                _setter(v, i, value);
+                this[i] = value;
+            }
+        }
+
+        /// <inheritdoc />
+        public override void Set(ValueContainer instanceValues)
+        {
+            if (instanceValues == null || instanceValues.Count != Count)
+                throw new ArgumentException();
+
+            for (int i = 0; i < Count; i++)
+            {
+                var v = instanceValues[i];
+                _setter(v, i, _getter(v, i));
+            }
+        }
+
+        /// <inheritdoc />
+        public override void RefreshReferenceValue(object instanceValue)
+        {
+            // Not supported
+        }
+    }
+}