135 lines
4.4 KiB
C#
135 lines
4.4 KiB
C#
/***********************************************************************\
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* Virtuoso.Miranda.Plugins (Hyphen) *
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* Provides a managed wrapper for API of IM client Miranda. *
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* Copyright (C) 2006-2009 virtuoso *
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* deml.tomas@seznam.cz *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public *
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* License as published by the Free Software Foundation; either *
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* version 2.1 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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\***********************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using Virtuoso.Miranda.Plugins.Infrastructure;
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namespace Virtuoso.Miranda.Plugins.Forms
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{
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public class SingletonDialog : PluginDialog
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{
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#region Fields
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private static readonly Dictionary<string, SingletonDialog> visibleDialogs = new Dictionary<string, SingletonDialog>(1);
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protected static Dictionary<string, SingletonDialog> VisibleDialogs
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{
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get { return visibleDialogs; }
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}
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private string singletonName;
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protected string SingletonName
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{
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get { return singletonName; }
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private set { singletonName = value; }
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}
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#endregion
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#region .ctors
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protected SingletonDialog() : this(null) { }
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protected SingletonDialog(string name)
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{
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this.singletonName = String.IsNullOrEmpty(name) ? GetDefaultName(GetType()) : name;
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}
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#endregion
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#region Overrides
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internal override void RegisterDialog()
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{
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lock (visibleDialogs)
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{
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if (!visibleDialogs.ContainsKey(SingletonName))
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visibleDialogs[SingletonName] = this;
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}
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base.RegisterDialog();
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}
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internal override void UnregisterDialog()
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{
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lock (visibleDialogs)
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visibleDialogs.Remove(SingletonName);
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base.UnregisterDialog();
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}
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#endregion
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#region Methods
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public static TForm GetSingleton<TForm>(bool createIfNeeded) where TForm : PluginDialog
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{
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return GetSingleton<TForm>(createIfNeeded, typeof(TForm).FullName);
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}
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public static TForm GetSingleton<TForm>(bool createIfNeeded, string name) where TForm : PluginDialog
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{
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if (String.IsNullOrEmpty(name))
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throw new ArgumentNullException("name");
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lock (visibleDialogs)
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{
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if (!visibleDialogs.ContainsKey(name) || visibleDialogs[name].IsDisposed)
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{
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if (createIfNeeded)
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return (TForm)Activator.CreateInstance(typeof(TForm), true);
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else
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return null;
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}
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else
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return visibleDialogs[name] as TForm;
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}
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}
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private delegate void ShowSingletonInvoker(bool modal);
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public void ShowSingleton(bool modal)
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{
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if (InvokeRequired)
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Invoke(new ShowSingletonInvoker(DoShowSingleton), modal);
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else
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DoShowSingleton(modal);
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}
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private void DoShowSingleton(bool modal)
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{
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if (Visible)
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Activate();
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else if (modal)
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ShowDialog();
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else
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Show();
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}
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public static string GetDefaultName(Type type)
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{
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if (type == null)
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throw new ArgumentNullException("type");
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return type.FullName;
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}
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#endregion
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}
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}
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