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Assets/AVProVideo/Editor/Scripts/RecentItems.cs

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+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+
+//-----------------------------------------------------------------------------
+// Copyright 2015-2021 RenderHeads Ltd.  All rights reserved.
+//-----------------------------------------------------------------------------
+
+namespace RenderHeads.Media.AVProVideo.Editor
+{
+	/// <summary>
+	/// </summary>
+	public static class RecentItems
+	{
+		private const int MaxRecentItems = 16;
+
+		private static List<string> _recentFiles = new List<string>(MaxRecentItems);
+		private static List<string> _recentUrls = new List<string>(MaxRecentItems);
+		// TODO: add a list for favourites to allow user to create their own list?
+
+		public static List<string> Files { get { return _recentFiles; } }
+		public static List<string> Urls { get { return _recentUrls; } }
+
+		static RecentItems()
+		{
+			MediaPlayer.InternalMediaLoadedEvent.RemoveListener(Add);
+			MediaPlayer.InternalMediaLoadedEvent.AddListener(Add);
+		}
+
+		public static void Load()
+		{
+			_recentFiles = EditorHelper.GetEditorPrefsToStringList(MediaPlayerEditor.SettingsPrefix + "RecentFiles");
+			_recentUrls = EditorHelper.GetEditorPrefsToStringList(MediaPlayerEditor.SettingsPrefix + "RecentUrls");
+		}
+
+		public static void Save()
+		{
+			EditorHelper.SetEditorPrefsFromStringList(MediaPlayerEditor.SettingsPrefix + "RecentFiles", _recentFiles);
+			EditorHelper.SetEditorPrefsFromStringList(MediaPlayerEditor.SettingsPrefix + "RecentUrls", _recentUrls);
+		}
+
+		public static void Add(string path)
+		{
+			if (path.Contains("://"))
+			{
+				Add(path, _recentUrls);
+			}
+			else
+			{
+				Add(path, _recentFiles);
+			}
+		}
+
+		private static void Add(string path, List<string> list)
+		{
+			if (!list.Contains(path))
+			{
+				list.Insert(0, path);
+				if (list.Count > MaxRecentItems)
+				{
+					// Remove the oldest item from the list
+					list.RemoveAt(list.Count - 1);
+				}
+			}
+			else
+			{
+				// If it already contains the item, then move it to the top
+				list.Remove(path);
+				list.Insert(0, path);
+			}
+			Save();
+		}
+
+		public static void ClearMissingFiles()
+		{
+			if (_recentFiles != null && _recentFiles.Count > 0)
+			{
+				List<string> newList = new List<string>(_recentFiles.Count);
+				for (int i = 0; i < _recentFiles.Count; i++)
+				{
+					string path = _recentFiles[i];
+					if (System.IO.File.Exists(path))
+					{
+						newList.Add(path);
+					}
+				}
+				_recentFiles = newList;
+			}
+		}
+	}
+}