private void AccumulateChanges()
{
if (this.accumulatedChanges == null)
{
this.accumulatedChanges = new SettingsChangedEventArgs();
}
}
private void RaiseSettingsChanged(SettingsChangedEventArgs args)
{
this.OnSettingsChanged(args);
if (this.SettingsChanged != null)
{
this.SettingsChanged(this, args);
}
}
private void OnExitEditScope()
{
if (this.accumulatedChanges != null)
{
this.NotifyChange(this.accumulatedChanges);
this.accumulatedChanges = null;
}
}
/// <summary>
/// Will recursively notify all <see cref="SettingsNode"/> for a settings change.
/// </summary>
/// <param name="args"><see cref="SettingsChangedEventArgs"/> that contain information about the change.</param>
protected internal void NotifyChange(SettingsChangedEventArgs args)
{
if (args == null)
{
throw new ArgumentNullException("args");
}
args.OriginalSource = this;
SettingsNode target = this;
while (target != null && !target.IsInEditScope)
{
target.RaiseSettingsChanged(args);
target = target.Parent;
}
if (target != null)
{
target.AccumulateChanges();
}
}
/// <summary>
/// Invoked when a SettingsChangedEventArgs reaches the <see cref="SettingsNode"/>.
/// </summary>
/// <param name="args">The <see cref="SettingsChangedEventArgs" /> that contains the event data.</param>
protected virtual void OnSettingsChanged(SettingsChangedEventArgs args)
{
}
private void OnDataSettingsChanged(object sender, SettingsChangedEventArgs e)
{
// TODO: Get change details and push them along...
// Some changes may be processed by partial recomputations...
this.Invalidate();
}
/// <summary>
/// Notifies the Parent <see cref="SettingsNode"/> for a change.
/// </summary>
/// <param name="settingsEventArgs">The <see cref="SettingsChangedEventArgs" /> that contains the event data.</param>
protected void NotifyChange(SettingsChangedEventArgs settingsEventArgs)
{
this.Parent.NotifyChange(settingsEventArgs);
}