internal void OnTopicBeforeCollapse(TopicCancelEventArgs e)
{
if (TopicBeforeCollapse != null)
{
TopicBeforeCollapse(this, e);
}
}
internal void OnTopicBeforeExpand(TopicCancelEventArgs e)
{
if (TopicBeforeExpand != null)
{
TopicBeforeExpand(this, e);
}
}
void OnBeforeCollapse(CancelEventArgs e)
{
if (BeforeCollapse != null)
{
BeforeCollapse(this, e);
}
if (!e.Cancel && MindMap != null)
{
TopicCancelEventArgs ce = new TopicCancelEventArgs(this);
MindMap.OnTopicBeforeCollapse(ce);
e.Cancel = ce.Cancel;
}
}