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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Input;
namespace ProjectViewer.ViewModel
{
/// <summary>
/// This ViewModelBase subclass requests to be removed
/// from the UI when its CloseCommand executes.
/// This class is abstract.
/// </summary>
public abstract class WorkspaceViewModel : ViewModelBase
{
#region Fields
RelayCommand _closeCommand;
#endregion // Fields
#region Constructor
protected WorkspaceViewModel()
{
}
#endregion // Constructor
#region CloseCommand
/// <summary>
/// Returns the command that, when invoked, attempts
/// to remove this workspace from the user interface.
/// </summary>
public ICommand CloseCommand
{
get
{
if (_closeCommand == null)
_closeCommand = new RelayCommand(param => this.OnRequestClose());
return _closeCommand;
}
}
#endregion // CloseCommand
#region RequestClose [event]
/// <summary>
/// Raised when this workspace should be removed from the UI.
/// </summary>
public event EventHandler RequestClose;
void OnRequestClose()
{
EventHandler handler = this.RequestClose;
if (handler != null)
handler(this, EventArgs.Empty);
}
#endregion // RequestClose [event]
public WorkspaceViewModel Parent { get; set; }
}
}
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