using System;
using UnityEditor.AnimatedValues;
using System.Collections.Generic;
namespace UnityEditor.Rendering
{
/// <summary>Used in editor drawer part to store the state of additional properties areas.</summary>
/// <typeparam name="TState">An enum to use to describe the state.</typeparam>
public abstract class AdditionalPropertiesStateBase<TState>
where TState : struct, IConvertible
{
HashSet<Editor> m_Editors = new ();
/// <summary>Get or set the state given the mask.</summary>
/// <param name="mask">The filtering mask</param>
/// <value>True: All flagged area are expended</value>
public bool this[TState mask]
{
get => GetAdditionalPropertiesState(mask);
set => SetAdditionalPropertiesState(mask, value);
}
/// <summary>Accessor to the expended state of this specific mask.</summary>
/// <param name="mask">The filtering mask</param>
/// <returns>True: All flagged area are expended</returns>
public abstract bool GetAdditionalPropertiesState(TState mask);
/// <summary>Setter to the expended state.</summary>
/// <param name="mask">The filtering mask.</param>
/// <param name="value">True to show the additional properties.</param>
public void SetAdditionalPropertiesState(TState mask, bool value)
{
SetAdditionalPropertiesStateValue(mask, value);
}
/// <summary>Setter to the expended state without resetting animation.</summary>
/// <param name="mask">The filtering mask.</param>
/// <param name="value">True to show the additional properties.</param>
protected abstract void SetAdditionalPropertiesStateValue(TState mask, bool value);
/// <summary> Utility to set all states to true </summary>
public abstract void ShowAll();
/// <summary> Utility to set all states to false </summary>
public abstract void HideAll();
/// <summary>
/// Resets the animation associated with the given mask to a default state with the animated value set to 1.0 and the target value set to 0.0.
/// </summary>
/// <param name="mask">The state mask used to retrieve the associated animation.</param>
protected internal void ResetAnimation(TState mask)
{
}
/// <summary>
/// Register an editor for this set of additional properties.
/// </summary>
/// <param name="editor">Editor to register.</param>
public void RegisterEditor(Editor editor)
{
m_Editors.Add(editor);
}
/// <summary>
/// Unregister an editor for this set of additional properties.
/// </summary>
/// <param name="editor">Editor to unregister.</param>
public void UnregisterEditor(Editor editor)
{
m_Editors.Remove(editor);
}
}
/// <summary>Used in editor drawer part to store the state of additional properties areas.</summary>
/// <typeparam name="TState">An enum to use to describe the state.</typeparam>
/// <typeparam name="TTarget">A type given to automatically compute the key.</typeparam>
public class AdditionalPropertiesState<TState, TTarget> : AdditionalPropertiesStateBase<TState>
where TState : struct, IConvertible
{
/// <summary>
/// Stores the expanded or collapsed state of each section defined by <typeparamref name="TState"/>.
/// </summary>
protected internal EditorPrefBoolFlags<TState> m_State;
/// <summary>Constructor will create the key to store in the EditorPref the state given generic type passed.</summary>
/// <param name="defaultValue">If key did not exist, it will be created with this value for initialization.</param>
/// <param name="prefix">[Optional] Prefix scope of the key (Default is CoreRP)</param>
/// <param name="stateId">[Optional] Postfix used to differentiate between different keys (Default is UI_AP_State)</param>
public AdditionalPropertiesState(TState defaultValue, string prefix = "CoreRP", string stateId = "UI_AP_State")
{
string key = $"{prefix}:{typeof(TTarget).Name}:{typeof(TState).Name}:{stateId}";
m_State = new EditorPrefBoolFlags<TState>(key);
AdvancedProperties.UpdateShowAdvancedProperties(key, m_State.rawValue != 0u);
}
/// <inheritdoc/>
public override bool GetAdditionalPropertiesState(TState _)
{
return AdvancedProperties.enabled;
}
/// <inheritdoc/>
protected override void SetAdditionalPropertiesStateValue(TState _, bool value)
{
AdvancedProperties.enabled = value;
}
/// <inheritdoc/>
public override void ShowAll()
{
AdvancedProperties.enabled = true;
}
/// <inheritdoc/>
public override void HideAll()
{
AdvancedProperties.enabled = false;
}
}
/// <summary>Used in editor drawer part to store the state of additional properties for a list of elements.</summary>
/// <typeparam name="TTarget">A type given to automatically compute the key.</typeparam>
public class AdditionalPropertiesStateList<TTarget> : AdditionalPropertiesState<int, TTarget>
{
/// <summary>Constructor will create the key to store in the EditorPref the state given generic type passed.</summary>
/// <param name="prefix">[Optional] Prefix scope of the key (Default is CoreRP)</param>
public AdditionalPropertiesStateList(string prefix = "CoreRP")
: base(default(int), prefix, "UI_AP_State_List") { }
/// <summary>
/// Swap flag between src index and dst index.
/// </summary>
/// <param name="srcIndex">src index to swap.</param>
/// <param name="dstIndex">dst index to swap.</param>
public void SwapFlags(int srcIndex, int dstIndex)
{
int srcFlag = 1 << srcIndex;
int dstFlag = 1 << dstIndex;
bool srcVal = GetAdditionalPropertiesState(srcFlag);
SetAdditionalPropertiesState(srcFlag, GetAdditionalPropertiesState(dstFlag));
SetAdditionalPropertiesState(dstFlag, srcVal);
}
/// <summary> Removes a flag at a given index which causes the following flags' index to decrease by one.</summary>
/// <param name="index">The index of the flag to be removed.</param>
public void RemoveFlagAtIndex(int index)
{
m_State.rawValue = ExpandedStateList<TTarget>.RightShiftOnceFromIndexToMSB(index, m_State.rawValue);
}
}
}