1 // OpenTween - Client of Twitter
2 // Copyright (c) 2014 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
3 // All rights reserved.
5 // This file is part of OpenTween.
7 // This program is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 3 of the License, or (at your option)
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 // You should have received a copy of the GNU General Public License along
18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 // Boston, MA 02110-1301, USA.
23 using System.Collections.Generic;
26 using System.Windows.Forms;
27 using System.ComponentModel;
32 /// WinformsコントロールのBegin/EndUpdate等のメソッドをusingブロックによって呼び出すためのクラス
34 public static class ControlTransaction
36 public static IDisposable Update(ListView control)
37 => new Transaction<ListView>(control, x => x.BeginUpdate(), x => x.EndUpdate());
39 public static IDisposable Update(ListBox control)
40 => new Transaction<ListBox>(control, x => x.BeginUpdate(), x => x.EndUpdate());
42 public static IDisposable Update(ComboBox control)
43 => new Transaction<ComboBox>(control, x => x.BeginUpdate(), x => x.EndUpdate());
45 public static IDisposable Update(TreeView control)
46 => new Transaction<TreeView>(control, x => x.BeginUpdate(), x => x.EndUpdate());
48 public static IDisposable Update(Control control)
50 // Begin/EndUpdate メソッドを持たないコントロールに対しては、
51 // WM_SETREDRAW メッセージを直接コントロールに送信する。
52 return new Transaction<Control>(control,
53 x => NativeMethods.SetRedrawState(x, false),
54 x => { NativeMethods.SetRedrawState(x, true); x.Invalidate(true); });
57 public static IDisposable Layout(Control control)
58 => Layout(control, performLayout: true);
60 public static IDisposable Layout(Control control, bool performLayout)
61 => new Transaction<Control>(control, x => x.SuspendLayout(), x => x.ResumeLayout(performLayout));
63 public static IDisposable Init(ISupportInitialize control)
64 => new Transaction<ISupportInitialize>(control, x => x.BeginInit(), x => x.EndInit());
66 public static IDisposable Cursor(Control control, Cursor newCursor)
68 var oldCursor = control.Cursor;
70 return new Transaction<Control>(control, x => x.Cursor = newCursor, x => x.Cursor = oldCursor);
73 public static IDisposable Enabled(Control control)
75 var oldState = control.Enabled;
77 return new Transaction<Control>(control, x => x.Enabled = true, x => x.Enabled = oldState);
80 public static IDisposable Disabled(Control control)
82 var oldState = control.Enabled;
84 return new Transaction<Control>(control, x => x.Enabled = false, x => x.Enabled = oldState);
87 private class Transaction<T> : IDisposable
89 private readonly T control;
91 private readonly Action<T> beginTransaction;
92 private readonly Action<T> endTransaction;
94 internal Transaction(T control, Action<T> beginTrans, Action<T> endTrans)
96 this.control = control;
98 this.beginTransaction = beginTrans;
99 this.endTransaction = endTrans;
101 this.beginTransaction(this.control);
104 public void Dispose()
105 => this.endTransaction(this.control);