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71 lines
1.9 KiB
71 lines
1.9 KiB
/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Input;
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namespace Xceed.Wpf.AvalonDock.Commands
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{
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internal class RelayCommand : ICommand
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{
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#region Fields
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readonly Action<object> _execute;
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readonly Predicate<object> _canExecute;
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#endregion // Fields
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#region Constructors
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public RelayCommand(Action<object> execute)
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: this(execute, null)
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{
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}
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public RelayCommand(Action<object> execute, Predicate<object> canExecute)
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{
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if (execute == null)
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throw new ArgumentNullException("execute");
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_execute = execute;
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_canExecute = canExecute;
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}
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#endregion // Constructors
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#region ICommand Members
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public bool CanExecute(object parameter)
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{
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return _canExecute == null ? true : _canExecute(parameter);
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}
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public event EventHandler CanExecuteChanged
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{
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add { CommandManager.RequerySuggested += value; }
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remove { CommandManager.RequerySuggested -= value; }
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}
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public void Execute(object parameter)
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{
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_execute(parameter);
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}
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#endregion // ICommand Members
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}
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}
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