/// <summary>
/// Returns an array of all the listeners that have been associated
/// with the named property.
/// <para>
/// Only the listeners in this context are returned.
///
/// </para>
/// </summary>
/// <param name="propertyName"> the specified property </param>
/// <returns> all of the {@code PropertyChangeListener}s associated with
/// the named property; if no such listeners have been added or
/// if {@code propertyName} is {@code null} or invalid, an empty
/// array is returned
/// </returns>
/// <seealso cref= #addPropertyChangeListener </seealso>
/// <seealso cref= #removePropertyChangeListener </seealso>
public virtual PropertyChangeListener[] GetPropertyChangeListeners(String propertyName)
{
lock (this)
{
return(CurrentChangeSupport.GetPropertyChangeListeners(propertyName));
}
}
// ***************************************************************
// ***************************************************************
/// <summary>
/// Support for reporting bound property changes for Object properties.
/// This method can be called when a bound property has changed and it will
/// send the appropriate PropertyChangeEvent to any registered
/// PropertyChangeListeners.
/// </summary>
/// <param name="propertyName"> the property whose value has changed </param>
/// <param name="oldValue"> the property's previous value </param>
/// <param name="newValue"> the property's new value </param>
private void FirePropertyChange(String propertyName, Object oldValue, Object newValue)
{
if (oldValue != null && newValue != null && oldValue.Equals(newValue))
{
return;
}
CurrentChangeSupport.FirePropertyChange(propertyName, oldValue, newValue);
}
/// <summary>
/// Removes a {@code PropertyChangeListener} from the listener list
/// for a specific property.
/// <para>
/// The {@code PropertyChangeListener} must be from this context.
/// </para>
/// <para>
/// If {@code propertyName} or {@code listener} is {@code null} or invalid,
/// no exception is thrown and no action is taken.
///
/// </para>
/// </summary>
/// <param name="propertyName"> the specified property </param>
/// <param name="listener"> the PropertyChangeListener to be removed
/// </param>
/// <seealso cref= #addPropertyChangeListener </seealso>
/// <seealso cref= #getPropertyChangeListeners </seealso>
public virtual void RemovePropertyChangeListener(String propertyName, PropertyChangeListener listener)
{
lock (this)
{
if (listener == null)
{
return;
}
CurrentChangeSupport.RemovePropertyChangeListener(propertyName, listener);
}
}
