/// <summary>
/// Edits items in the specified subscription.
/// </summary>
private void EditItem(TreeNode node, TsCDaSubscription subscription, TsCDaItem item)
{
try
{
// save existing item id.
OpcItem itemID = new OpcItem(item);
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { item }, false, false);
if (items == null)
{
return;
}
// modify an existing item.
if (itemID.Key == items[0].Key)
{
subscription.ModifyItems((int)TsCDaStateMask.All, items);
}
// add/remove item because the item id changed.
else
{
items = subscription.AddItems(items);
subscription.RemoveItems(new OpcItem[] { itemID });
}
node.Text = items[0].ItemName;
node.Tag = items[0];
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Edits the item template.
/// </summary>
private void EditTemplate(TsCDaItem template)
{
// prompt user to edit the template.
TsCDaItem[] templates = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { template }, IsReadItem, false);
if (templates == null || templates.Length != 1)
{
return;
}
// get existing items without applying defaults.
ArrayList items = new ArrayList();
foreach (ListViewItem item in ItemListLV.Items)
{
if (item.Tag != null && item.Tag.GetType() == typeof(TsCDaItem))
{
if (item.Tag != m_template)
{
items.Add(item.Tag);
}
}
}
// re-initialize the list with the new template.
Initialize(templates[0]);
// add items back.
foreach (TsCDaItem item in items)
{
AddItem(item);
}
}
/// <summary>
/// Edits a group of items.
/// </summary>
private void EditMI_Click(object sender, System.EventArgs e)
{
// check if the template if being editied.
if (ItemListLV.SelectedItems.Count == 1)
{
if (ItemListLV.SelectedItems[0].Tag == m_template)
{
EditTemplate(m_template);
return;
}
}
// build list of items to edit (exclude template).
ArrayList itemList = new ArrayList(ItemListLV.SelectedItems.Count);
foreach (ListViewItem item in ItemListLV.SelectedItems)
{
if (item.Tag != null && item.Tag.GetType() == typeof(TsCDaItem))
{
if (item.Tag != m_template)
{
itemList.Add(item.Tag);
}
}
}
// prompt user to edit list of items.
TsCDaItem[] items = new ItemListEditDlg().ShowDialog((TsCDaItem[])itemList.ToArray(typeof(TsCDaItem)), IsReadItem, false);
if (items == null)
{
return;
}
// remove changed items.
RemoveMI_Click(sender, e);
// add changed items.
foreach (TsCDaItem item in items)
{
AddItem(item);
}
}
/// <summary>
/// Creates a new item.
/// </summary>
private void NewMI_Click(object sender, System.EventArgs e)
{
TsCDaItem template = null;
// copy the current selection.
if (ItemListLV.SelectedItems.Count > 0)
{
template = (TsCDaItem)((TsCDaItem)ItemListLV.SelectedItems[0].Tag).Clone();
}
// prompt user to edit new item.
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { template }, IsReadItem, true);
if (items == null)
{
return;
}
// add new items.
foreach (TsCDaItem item in items)
{
AddItem(item);
}
}
/// <summary>
/// Edits items in the specified subscription.
/// </summary>
private void EditItems(TreeNode node, TsCDaSubscription subscription)
{
try
{
// save item ids to detect item id changes.
OpcItem[] itemIDs = new OpcItem[subscription.Items.Length];
for (int ii = 0; ii < itemIDs.Length; ii++)
{
itemIDs[ii] = new OpcItem(subscription.Items[ii]);
}
// edit the items.
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(subscription.Items, false, false);
if (items == null)
{
return;
}
// separate the items in lists depending on whether item id changed.
ArrayList insertItems = new ArrayList();
ArrayList updateItems = new ArrayList();
ArrayList deleteItems = new ArrayList();
for (int ii = 0; ii < itemIDs.Length; ii++)
{
if (items[ii].Key != itemIDs[ii].Key)
{
insertItems.Add(items[ii]);
deleteItems.Add(itemIDs[ii]);
}
else
{
updateItems.Add(items[ii]);
}
}
// update existing items.
if (updateItems.Count > 0)
{
subscription.ModifyItems((int)TsCDaStateMask.All, (TsCDaItem[])updateItems.ToArray(typeof(TsCDaItem)));
}
// insert new items.
if (insertItems.Count > 0)
{
subscription.AddItems((TsCDaItem[])insertItems.ToArray(typeof(TsCDaItem)));
}
// delete old items.
if (deleteItems.Count > 0)
{
subscription.RemoveItems((OpcItem[])deleteItems.ToArray(typeof(OpcItem)));
}
// update tree.
node.Nodes.Clear();
foreach (TsCDaItem item in subscription.Items)
{
AddItem(node, item);
}
node.Expand();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}