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.
25 using System.Collections.Generic;
26 using System.ComponentModel;
29 using System.Windows.Forms;
34 /// 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
36 public static class ControlTransaction
38 public static IDisposable Update(ListView control)
39 => new Transaction<ListView>(control, x => x.BeginUpdate(), x => x.EndUpdate());
41 public static IDisposable Update(ListBox control)
42 => new Transaction<ListBox>(control, x => x.BeginUpdate(), x => x.EndUpdate());
44 public static IDisposable Update(ComboBox control)
45 => new Transaction<ComboBox>(control, x => x.BeginUpdate(), x => x.EndUpdate());
47 public static IDisposable Update(TreeView control)
48 => new Transaction<TreeView>(control, x => x.BeginUpdate(), x => x.EndUpdate());
50 public static IDisposable Update(Control control)
52 // Begin/EndUpdate メソッドを持たないコントロールに対しては、
53 // WM_SETREDRAW メッセージを直接コントロールに送信する。
54 return new Transaction<Control>(control,
55 x => NativeMethods.SetRedrawState(x, false),
58 NativeMethods.SetRedrawState(x, true);
63 public static IDisposable Layout(Control control)
64 => Layout(control, performLayout: true);
66 public static IDisposable Layout(Control control, bool performLayout)
67 => new Transaction<Control>(control, x => x.SuspendLayout(), x => x.ResumeLayout(performLayout));
69 public static IDisposable Init(ISupportInitialize control)
70 => new Transaction<ISupportInitialize>(control, x => x.BeginInit(), x => x.EndInit());
72 public static IDisposable Cursor(Control control, Cursor newCursor)
74 var oldCursor = control.Cursor;
76 return new Transaction<Control>(control, x => x.Cursor = newCursor, x => x.Cursor = oldCursor);
79 public static IDisposable Enabled(Control control)
81 var oldState = control.Enabled;
83 return new Transaction<Control>(control, x => x.Enabled = true, x => x.Enabled = oldState);
86 public static IDisposable Disabled(Control control)
88 var oldState = control.Enabled;
90 return new Transaction<Control>(control, x => x.Enabled = false, x => x.Enabled = oldState);
93 private class Transaction<T> : IDisposable
95 private readonly T control;
97 private readonly Action<T> beginTransaction;
98 private readonly Action<T> endTransaction;
100 internal Transaction(T control, Action<T> beginTrans, Action<T> endTrans)
102 this.control = control;
104 this.beginTransaction = beginTrans;
105 this.endTransaction = endTrans;
107 this.beginTransaction(this.control);
110 public void Dispose()
111 => this.endTransaction(this.control);