42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
using System;
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namespace Haftmittel
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{
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public class DelegateCommand<T> : System.Windows.Input.ICommand
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{
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private readonly Predicate<T> _canExecute;
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private readonly Action<T> _execute;
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public DelegateCommand(Action<T> execute)
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: this(execute, null)
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{
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}
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public DelegateCommand(Action<T> execute, Predicate<T> canExecute)
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{
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_execute = execute;
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_canExecute = canExecute;
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}
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public bool CanExecute(object parameter)
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{
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if (_canExecute == null)
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return true;
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return _canExecute((parameter == null) ? default : (T)Convert.ChangeType(parameter, typeof(T)));
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}
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public void Execute(object parameter)
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{
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_execute((parameter == null) ? default : (T)Convert.ChangeType(parameter, typeof(T)));
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}
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public event EventHandler CanExecuteChanged;
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public void RaiseCanExecuteChanged()
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{
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if (CanExecuteChanged != null)
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CanExecuteChanged(this, EventArgs.Empty);
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}
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}
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}
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