136 lines
4.2 KiB
C#
136 lines
4.2 KiB
C#
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//
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// Copyright 2020 Electronic Arts Inc.
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//
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// The Command & Conquer Map Editor and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// The Command & Conquer Map Editor and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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using Microsoft.Win32;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Windows.Forms;
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namespace MobiusEditor.Utility
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{
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public class MRU
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{
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private readonly RegistryKey registryKey;
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private readonly int maxFiles;
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private readonly List<FileInfo> files = new List<FileInfo>();
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private readonly ToolStripMenuItem menu;
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private readonly ToolStripMenuItem[] fileItems;
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public event EventHandler<FileInfo> FileSelected;
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public MRU(string registryPath, int maxFiles, ToolStripMenuItem menu)
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{
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var subKey = Registry.CurrentUser;
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foreach (var key in registryPath.Split('\\'))
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{
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subKey = subKey.CreateSubKey(key, true);
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}
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registryKey = subKey.CreateSubKey("MRU");
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this.maxFiles = maxFiles;
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this.menu = menu;
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this.menu.DropDownItems.Clear();
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fileItems = new ToolStripMenuItem[maxFiles];
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for (var i = 0; i < fileItems.Length; ++i)
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{
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var fileItem = fileItems[i] = new ToolStripMenuItem();
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fileItem.Visible = false;
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menu.DropDownItems.Add(fileItem);
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}
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LoadMRU();
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ShowMRU();
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}
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public void Add(FileInfo file)
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{
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files.RemoveAll(f => f.FullName == file.FullName);
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files.Insert(0, file);
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if (files.Count > maxFiles)
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{
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files.RemoveAt(files.Count - 1);
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}
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SaveMRU();
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ShowMRU();
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}
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public void Remove(FileInfo file)
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{
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files.RemoveAll(f => f.FullName == file.FullName);
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SaveMRU();
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ShowMRU();
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}
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private void LoadMRU()
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{
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files.Clear();
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for (var i = 0; i < maxFiles; ++i)
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{
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string fileName = registryKey.GetValue(i.ToString()) as string;
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if (!string.IsNullOrEmpty(fileName))
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{
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files.Add(new FileInfo(fileName));
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}
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}
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}
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private void SaveMRU()
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{
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for (var i = 0; i < files.Count; ++i)
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{
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registryKey.SetValue(i.ToString(), files[i].FullName);
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}
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for (var i = files.Count; i < maxFiles; ++i)
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{
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registryKey.DeleteValue(i.ToString(), false);
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}
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}
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private void ShowMRU()
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{
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for (var i = 0; i < files.Count; ++i)
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{
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var file = files[i];
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var fileItem = fileItems[i];
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fileItem.Text = string.Format("&{0} {1}", i + 1, file.FullName);
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fileItem.Tag = file;
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fileItem.Click -= FileItem_Click;
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fileItem.Click += FileItem_Click;
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fileItem.Visible = true;
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}
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for (var i = files.Count; i < maxFiles; ++i)
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{
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var fileItem = fileItems[i];
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fileItem.Visible = false;
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fileItem.Click -= FileItem_Click;
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}
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menu.Enabled = files.Count > 0;
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}
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private void FileItem_Click(object sender, EventArgs e)
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{
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FileSelected?.Invoke(this, (sender as ToolStripMenuItem).Tag as FileInfo);
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}
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}
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}
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