/// <summary>
/// Ajoute un prédecesseur à l'élément spécifié.
/// </summary>
/// <param name="item">L'élément successeur.</param>
/// <param name="predecessorItem">L'élément prédecesseur.</param>
private void AddPredecessorItem(ActionGanttItem item, ActionGanttItem predecessorItem)
{
_currentUpdatingPredecessors = item.Predecessors;
item.Predecessors.Add(new PredecessorItem()
{
Item = predecessorItem, DependencyType = DependencyType.FinishStart
});
_currentUpdatingPredecessors = null;
}
/// <summary>
/// Appelé lorsque les prédecesseurs ont changé sur un élément.
/// </summary>
/// <param name="sender">La source.</param>
/// <param name="e">Les <see cref="System.EventArgs"/> contenant les données de l'évènement.</param>
private void OnItemPredecessorsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
var collection = (PredecessorItemCollection)sender;
if (_currentUpdatingPredecessors != collection && !base.IsMovingItems)
{
if (e.NewItems != null)
{
foreach (PredecessorItem pi in e.NewItems)
{
var item = (ActionGanttItem)pi.DependentItem;
var predecessor = (ActionGanttItem)pi.Item;
_currentUpdatingPredecessors = collection;
if (!base.AddPredecessor(item, predecessor))
{
throw new InvalidOperationException("Impossible d'ajouter un prédecesseur invalide. Utiliser CheckCanAddPredecessor() au préalable.");
}
_currentUpdatingPredecessors = null;
}
}
if (e.OldItems != null)
{
foreach (PredecessorItem pi in e.OldItems)
{
var item = (ActionGanttItem)pi.DependentItem;
var predecessor = (ActionGanttItem)pi.Item;
_currentUpdatingPredecessors = collection;
base.RemovePredecessor(item, predecessor);
_currentUpdatingPredecessors = null;
}
}
}
}
/// <summary>
/// Supprime un prédecesseur de l'élément.
/// </summary>
/// <param name="item">Le <see cref="PredecessorItem"/>.</param>
private void DeletePredecessorItem(PredecessorItem item)
{
_currentUpdatingPredecessors = item.DependentItem.Predecessors;
item.DependentItem.Predecessors.Remove(item);
_currentUpdatingPredecessors = null;
}
