55 lines
1.0 KiB
C#
55 lines
1.0 KiB
C#
using System;
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using System.Windows.Input;
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namespace Aitex.Core.UI.MVVM
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{
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public class DelegateCommand<T> : IDelegateCommand, ICommand
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{
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private readonly Action<T> _execute;
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private readonly Predicate<T> _canExecute;
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private ICommand clearAllCommand;
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public event EventHandler CanExecuteChanged;
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public DelegateCommand(Action<T> execute)
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: this(execute, (Predicate<T>)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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if (execute == null)
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{
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throw new ArgumentNullException("execute");
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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 DelegateCommand(ICommand clearAllCommand)
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{
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this.clearAllCommand = clearAllCommand;
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}
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public bool CanExecute(object parameter)
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{
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return _canExecute == null || _canExecute((T)parameter);
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}
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public void RaiseCanExecuteChanged()
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{
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if (this.CanExecuteChanged != null)
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{
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this.CanExecuteChanged(this, EventArgs.Empty);
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}
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}
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public void Execute(object parameter)
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{
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_execute((T)parameter);
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}
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}
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}
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