void descriptionTextBox_LostFocus(object sender, EventArgs e)
{
if (descriptionChanged)
{
TodoItemDescriptionChanged @event = new TodoItemDescriptionChanged(todoItem.id, descriptionTextBox.Text);
state.LoadAndPersist(@event);
descriptionChanged = false;
}
}
/// <summary>
/// Creates a random event. Needs to be updated every time new events get created!
/// </summary>
/// <returns>An event. </returns>
private List<IEvent> getRandomEvent()
{
//returns less then specified number.
int whichEvent = differentSeedRandom.Next(10);
Debug.WriteLine("Case: " + whichEvent);
switch (whichEvent)
{
// List name changed
case 0:
ListNameChanged listNameChanged = new ListNameChanged(getRandomString(nameLength));
return toList(listNameChanged);
// Todo item created
case 1:
return toList(getRandomTodoItemCreated());
// Todo item description changed.
case 2:
// Can only add events to items that exist.
if(getAvailableTodoItems().Count == 0)
{
break;
}
TodoItemDescriptionChanged todoItemDescriptionChanged = new TodoItemDescriptionChanged(getRandomTodoItemGuid(), getRandomString(descriptionLenght));
return toList(todoItemDescriptionChanged);
// Todo item name changed.
case 3:
// Can only add events to items that exist.
if (getAvailableTodoItems().Count == 0)
{
break;
}
TodoItemNameChanged todoItemNameChanged = new TodoItemNameChanged(getRandomTodoItemGuid(), getRandomString(nameLength));
return toList(todoItemNameChanged);
case 4:
// Need at least two items to change Priority. It's more of a swap priority.
if (getAvailableTodoItems().Count < 2)
{
break;
}
return getRandomTodoItemPriorityChanged();
// Todo item deleted.
case 5:
if (getAvailableTodoItems().Count <= 1)
{
break;
}
return toList(getRandomTodoItemDeleted());
// Todo item Priority increased.
case 6:
if (getAvailableTodoItems().Count == 0)
{
break;
}
return toList(new TodoItemPriorityIncreased(getRandomTodoItemGuid()));
// Todo item Priority decreased.
case 7:
if (getAvailableTodoItems().Count == 0)
{
break;
}
TodoItemAggregate toDecrease = getAvailableTodoItems().ElementAt(
differentSeedRandom.Next(getAvailableTodoItems().Count));
if (toDecrease.priority < 2)
break;
return toList(new TodoItemPriorityDecreased(toDecrease.id));
// Multiple delete of todo items.
case 8:
if (getAvailableTodoItems().Count <= 3)
break;
// Build a list of items to remove. Random amount.
List<Guid> removedItems = new List<Guid>();
for (int i = 0; i < differentSeedRandom.Next(2, maxsimultaneousDelete + 1); i++)
{
removedItems.Add(getAvailableTodoItems().ElementAt(
differentSeedRandom.Next(getAvailableTodoItems().Count)).id);
}
// Make sure there are no duplicates.
TodoItemsDeleted deletedItems = new TodoItemsDeleted(removedItems.Distinct().ToList());
return toList(deletedItems);
case 9:
if (getAvailableTodoItems().Count == 0)
break;
return toList(getRandomTodoItemIndexChanged());
}
return getRandomEvent();
}
public IEvent transformEvent(TodoItemDescriptionChanged toTransform, IEvent transformAgainst)
{
if (transformAgainst.GetType().Equals(typeof(TodoItemCreated)))
{
//Change a description on an item that has been created server side without this side knowing, impossible.
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemDeleted)))
{
if (toTransform.aggregateId == ((TodoItemDeleted)transformAgainst).aggregateId)
//Delete todo item when other side has also deleted it. No problem, remove this event.
return new Unused();
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemDescriptionChanged)))
{
// If it is the exact same, remove the event.
if (toTransform.Equals((TodoItemDescriptionChanged)transformAgainst))
return new Unused();
// If it is On the same aggregate but not the same, conflict.
else if (toTransform.aggregateId == ((TodoItemDescriptionChanged)transformAgainst).aggregateId)
return null;
}
else if (transformAgainst.GetType().Equals(typeof(TodoItemsDeleted)))
{
//If the item deleted is deleted by multiple on the server, remove this event
if (((TodoItemsDeleted)transformAgainst).aggregateIds.Contains(toTransform.aggregateId))
return new Unused();
}
return toTransform;
}