/// <summary>
/// Initializes a new instance of the <see cref="DelegateCommand{TParam}"/> class.
/// </summary>
/// <param name="executeAction">The logic for <see cref="DelegateCommand{TParam}.OnExecute(TParam)" />.</param>
/// <param name="canExecutePredicate">The logic for <see cref="DelegateCommand{TParam}.CanExecute(TParam)" />.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="executeAction" /> is <see langword="null" />.
/// </exception>
public DelegateCommand(ExecuteHandler executeAction,
CanExecutePredicate canExecutePredicate)
{
if (executeAction == null)
{
throw new ArgumentNullException("executeAction");
}
this._EXECUTE_ACTION = executeAction;
this._CAN_EXECUTE_PREDICATE = canExecutePredicate ?? base.CanExecute;
}
/// <summary>
/// Initializes a new instance of the <see cref="DelegateJob" /> class.
/// </summary>
/// <param name="id">The ID of the job.</param>
/// <param name="execAction">An action for a <see cref="DelegateJob.OnExecute(IJobExecutionContext)" /> method.</param>
/// <param name="canExecutePredicate">A predicate for a <see cref="DelegateJob.OnCanExecute(DateTimeOffset, ref bool)" /> method.</param>
/// <param name="isThreadSafe">Job schould work thread safe or not.</param>
/// <param name="syncRoot">The object for thread safe operations.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="execAction" />, <paramref name="canExecutePredicate" /> and/or <paramref name="syncRoot" /> are <see langword="null" />.
/// </exception>
public DelegateJob(Guid id, ExecuteAction execAction, CanExecutePredicate canExecutePredicate, bool isThreadSafe, object syncRoot)
: base(id, isThreadSafe, syncRoot)
{
if (execAction == null)
{
throw new ArgumentNullException("execAction");
}
if (canExecutePredicate == null)
{
throw new ArgumentNullException("canExecutePredicate");
}
this._EXECUTE_ACTION = execAction;
this._CAN_EXECUTE_ACTION = delegate(DateTimeOffset time, ref bool canExecuteJob)
{
canExecuteJob = canExecutePredicate(time);
};
}
/// <summary>
/// Initializes a new instance of the <see cref="DelegateCommand{TParam}"/> class.
/// </summary>
/// <param name="executeAction">The logic for <see cref="DelegateCommand{TParam}.OnExecute(TParam)" />.</param>
/// <param name="canExecutePredicate">The logic for <see cref="DelegateCommand{TParam}.CanExecute(TParam)" />.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="executeAction" /> is <see langword="null" />.
/// </exception>
public SimpleCommand(ExecuteHandler executeAction,
CanExecutePredicate canExecutePredicate)
: base(executeAction,
canExecutePredicate)
{
}
public bool CanExecute(object parameter)
{
return(CanExecutePredicate == null || CanExecutePredicate.Invoke(parameter));
}
public bool CanExecute(object parameter) => !IsWorking && (CanExecutePredicate?.Invoke(parameter) ?? true);
/// <summary>
/// Initializes a new instance of the <see cref="DelegateJob" /> class.
/// </summary>
/// <param name="id">The ID of the job.</param>
/// <param name="execAction">An action for a <see cref="DelegateJob.OnExecute(IJobExecutionContext)" /> method.</param>
/// <param name="canExecutePredicate">A predicate for a <see cref="DelegateJob.OnCanExecute(DateTimeOffset, ref bool)" /> method.</param>
/// <param name="isThreadSafe">Job schould work thread safe or not.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="execAction" /> and/or <paramref name="canExecutePredicate" /> are <see langword="null" />.
/// </exception>
public DelegateJob(Guid id, ExecuteAction execAction, CanExecutePredicate canExecutePredicate, bool isThreadSafe)
: this(id, execAction, canExecutePredicate, isThreadSafe, new object())
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DelegateJob" /> class.
/// </summary>
/// <param name="id">The ID of the job.</param>
/// <param name="execAction">An action for a <see cref="DelegateJob.OnExecute(IJobExecutionContext)" /> method.</param>
/// <param name="canExecutePredicate">A predicate for a <see cref="DelegateJob.OnCanExecute(DateTimeOffset, ref bool)" /> method.</param>
/// <param name="syncRoot">The object for thread safe operations.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="execAction" />, <paramref name="canExecutePredicate" /> and/or <paramref name="syncRoot" /> are <see langword="null" />.
/// </exception>
public DelegateJob(Guid id, ExecuteAction execAction, CanExecutePredicate canExecutePredicate, object syncRoot)
: this(id, execAction, canExecutePredicate, false, syncRoot)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="DelegateJob" /> class.
/// </summary>
/// <param name="id">The ID of the job.</param>
/// <param name="execAction">An action for a <see cref="DelegateJob.OnExecute(IJobExecutionContext)" /> method.</param>
/// <param name="canExecutePredicate">A predicate for a <see cref="DelegateJob.OnCanExecute(DateTimeOffset, ref bool)" /> method.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="execAction" /> and/or <paramref name="canExecutePredicate" /> are <see langword="null" />.
/// </exception>
public DelegateJob(Guid id, ExecuteAction execAction, CanExecutePredicate canExecutePredicate)
: this(id, execAction, canExecutePredicate, false)
{
}
public bool CanExecute(object parameter)
{
return(CanExecutePredicate?.Invoke((TPredicateObj)parameter) ?? true);
}
protected override bool CanExecuteImplementation(object parameter) => parameter != null && (bool)CanExecutePredicate.DynamicInvoke((object[])parameter);
protected override bool CanExecuteImplementation(object parameter) => (bool)CanExecutePredicate.DynamicInvoke(parameter);