70 lines
1.7 KiB
C#
70 lines
1.7 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using HeavenStudio.Editor.Commands;
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namespace HeavenStudio.Editor
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{
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public class CommandManager : MonoBehaviour
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{
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public static CommandManager Instance { get; private set; }
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private Stack<ICommand> historyStack = new Stack<ICommand>();
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private Stack<ICommand> redoHistoryStack = new Stack<ICommand>();
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public int HistoryCount => historyStack.Count;
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private int maxItems = 128;
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private void Awake()
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{
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Instance = this;
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}
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public void AddCommand(ICommand command)
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{
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command.Execute();
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historyStack.Push(command);
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redoHistoryStack.Clear();
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}
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public void UndoCommand()
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{
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if (!CanUndo() || Conductor.instance.NotStopped()) return;
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if (historyStack.Count > 0)
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{
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redoHistoryStack.Push(historyStack.Peek());
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historyStack.Pop().Undo();
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}
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}
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public void RedoCommand()
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{
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if (!CanRedo() || Conductor.instance.NotStopped()) return;
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if (redoHistoryStack.Count > 0)
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{
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historyStack.Push(redoHistoryStack.Peek());
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redoHistoryStack.Pop().Execute();
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}
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}
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public void Clear()
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{
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historyStack.Clear();
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redoHistoryStack.Clear();
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}
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public bool CanUndo()
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{
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return historyStack.Count > 0;
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}
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public bool CanRedo()
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{
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return redoHistoryStack.Count > 0;
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}
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}
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} |