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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
namespace Tango.Editors
{
/// <summary>
/// RelayCommand is a very easy-to-use implementation of ICommand. You can use a RelayCommand to expose viewmodel functionality as a command, and
/// supply the condition that determines the command's availability. A control in the view bound to a command can execute an available command will</summary>
/// update its enabled state in response to the availability of the command.
/// <seealso cref="System.Windows.Input.ICommand" />
public sealed class RelayCommand : ICommand
{
#region fields
readonly Predicate<object> canExecute;
readonly Action<object> execute;
private Action<string> saveProject;
private RelayCommand syncHardwareConfigurationCommand;
#endregion fields
#region constructors
public RelayCommand(Action<object> execute) : this(execute, null) { }
public RelayCommand(Action<object> execute, Predicate<object> canExecute)
{
this.execute = execute;
this.canExecute = canExecute;
}
public RelayCommand(Action execute)
: this((x) => execute())
{
}
public RelayCommand(Action execute, Predicate<object> canExecute)
: this((x) => execute(), canExecute)
{
}
public RelayCommand(Action<string> saveProject)
{
this.saveProject = saveProject;
}
public RelayCommand(RelayCommand syncHardwareConfigurationCommand)
{
this.syncHardwareConfigurationCommand = syncHardwareConfigurationCommand;
}
#endregion constructors
#region methods
public void RaiseCanExecuteChanged()
{
if (this.CanExecuteChanged != null)
{
this.CanExecuteChanged(this, EventArgs.Empty);
}
}
#endregion methods
#region ICommand events
public event EventHandler CanExecuteChanged;
#endregion ICommand events
#region ICommand methods
public bool CanExecute(object parameter)
{
return this.canExecute != null ? this.canExecute(parameter) : true;
}
public void Execute(object parameter)
{
if (this.execute != null)
{
this.execute(parameter);
}
}
#endregion ICommand methods
}
public sealed class RelayCommand<T> : ICommand
{
#region fields
readonly Predicate<object> canExecute;
readonly Action<T> execute;
#endregion fields
#region constructors
public RelayCommand(Action<T> execute) : this(execute, null) { }
public RelayCommand(Action<T> execute, Predicate<object> canExecute)
{
this.execute = execute;
this.canExecute = canExecute;
}
public RelayCommand(Action execute)
: this((x) => execute())
{
}
#endregion constructors
#region methods
public void RaiseCanExecuteChanged()
{
if (this.CanExecuteChanged != null)
{
this.CanExecuteChanged(this, EventArgs.Empty);
}
}
#endregion methods
#region ICommand events
public event EventHandler CanExecuteChanged;
#endregion ICommand events
#region ICommand methods
public bool CanExecute(object parameter)
{
return this.canExecute != null ? this.canExecute(parameter) : true;
}
public void Execute(object parameter)
{
if (this.execute != null)
{
this.execute((T)parameter);
}
}
#endregion ICommand methods
}
}
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