private void UpdateView()
{
if (HistoryViewEntryUI == null || HistoryContentTransform == null)
{
return;
}
// Update existing UI objects to match the history order.
// Add new items when we run out of existing items.
// Update the layout at the end if required.
int nextViewChildIndex = (HistoryContentUI.content.childCount > 0) ? 0 : -1;
bool updateLayout = false;
foreach (IPEndPoint connection in History)
{
GameObject entryObj = null;
HistoryEntry entry = null;
RectTransform entryTransform = null;
// Try get an existing view entry for this item.
if (nextViewChildIndex >= 0)
{
while (entryObj == null && nextViewChildIndex < HistoryContentUI.content.childCount)
{
entryObj = HistoryContentUI.content.GetChild(nextViewChildIndex).gameObject;
entry = entryObj.GetComponent <HistoryEntry>();
entryTransform = entryObj.GetComponent <RectTransform>();
if (entry == null || entryTransform == null)
{
// Invalid/unexpected UI object. Remove and delete it.
entryObj.transform.parent = null;
GameObject.Destroy(entryObj);
}
else
{
++nextViewChildIndex;
}
}
if (nextViewChildIndex >= HistoryContentUI.content.childCount)
{
nextViewChildIndex = -1;
}
}
else
{
updateLayout = true;
entryObj = GameObject.Instantiate(HistoryViewEntryUI.gameObject);
entry = entryObj.GetComponent <HistoryEntry>();
entryTransform = entryObj.GetComponent <RectTransform>();
}
if (entryObj == null || entry == null || entryTransform == null)
{
if (entryObj)
{
GameObject.Destroy(entryObj);
}
continue;
}
entry.Connection = connection;
entry.Connections = this;
entryTransform.SetParent(HistoryContentTransform, false);
}
if (updateLayout)
{
HistoryContentUI.LayoutContentV();
}
}