/// <summary>
/// Update data in all access contexts from a secific proxy table.
/// The method was called from an access context after commit local changes to synchronize local view data.
/// </summary>
/// <param name="instance">originator proxy table instance</param>
internal void UpdateNotifyOtherListInstances(AccessContextList instance)
{
foreach (AccessContext context in this)
{
foreach (AccessContextList list in context.Tables)
{
if (list.DataSource == instance.DataSource && list != instance)
{
list.UpdateFromOtherInstance(instance);
}
}
}
}
/// <summary>
/// Update the instance data from another AccessContextList instance.
/// The method was called after commit changes from another access context to synchronize view data.
/// </summary>
/// <param name="instance">other access context list from different access context</param>
internal void UpdateFromOtherInstance(AccessContextList instance)
{
if (this == instance)
{
throw new InvalidOperationException();
}
foreach (var item in instance.ItemManager.Items)
{
switch (item.Key.State)
{
case AccessContextListItemManager.ItemEntryState.New:
int newIndex = this.Count - ItemManager.NewCount;
AccessContextItem newContextItem = new AccessContextItem(this, item.Key.Item.DataSource, AccessContextItemState.ItemIsNormal);
InsertItemSilent(newIndex, newContextItem);
break;
case AccessContextListItemManager.ItemEntryState.Deleted:
AccessContextItem deleteItem = GetItemFromDataSource(item.Key.Item.DataSource);
if (null == deleteItem)
{
deleteItem = ItemManager.GetItemFromDataSource(item.Key.Item.DataSource);
if (null != deleteItem)
{
deleteItem.ItemState = AccessContextItemState.ItemIsDeleted;
ItemManager.RemoveItem(deleteItem);
}
continue;
}
deleteItem.ItemState = AccessContextItemState.ItemIsDeleted;
int deleteIndex = IndexOf(deleteItem);
RemoveSilent(deleteItem);
ItemManager.DecrementItemIndex(deleteIndex);
break;
case AccessContextListItemManager.ItemEntryState.Changed:
// do nothing
break;
default:
throw new IndexOutOfRangeException();
}
}
}
/// <summary>
/// Creates an instance of the class
/// </summary>
/// <param name="parent">parent list</param>
public AccessContextListItemManager(AccessContextList parent)
{
Parent = parent;
Items = new Dictionary <ItemEntry, int>();
}
/// <summary>
/// Creates an instance of the class
/// </summary>
/// <param name="parent">parent list</param>
/// <param name="state">current state of the item</param>
public AccessContextItem(AccessContextList parent, AccessContextItemState state)
{
Parent = parent;
ItemState = state;
}
/// <summary>
/// Creates an instance of the class
/// </summary>
/// <param name="parent">parent list</param>
/// <param name="dataSource">origin item</param>
/// <param name="state">current state of the item</param>
public AccessContextItem(AccessContextList parent, RootItem dataSource, AccessContextItemState state)
{
Parent = parent;
DataSource = dataSource;
ItemState = state;
}