private void ContextMenu_MenuItem_MoveSourceUpOrDown(object sender, RoutedEventArgs e)
{
MenuItem mi = sender as MenuItem;
if (mi == null)
{
return;
}
SourceItem selectedItem = this.ListView_Sources.SelectedItem as SourceItem;
this.MoveSourceItemUpOrDown(selectedItem, (string)mi.Tag == "up");
}
private void LoadSources()
{
List <SourceItem> sourceItems = new List <SourceItem>();
foreach (Source source in App.sources.SourcesList)
{
SourceItem sourceItem = new SourceItem(source);
sourceItem.MoveUpRequested += new EventHandler(this.SourceItem_MoveUp);
sourceItem.MoveDownRequested += new EventHandler(this.SourceItem_MoveDown);
sourceItems.Add(sourceItem);
}
this.UpdateSources(sourceItems);
}
/// <summary>
/// Move a SourceItem up or down in the Sources list.
/// </summary>
/// <param name="selectedItem"></param>
/// <param name="up"></param>
private void MoveSourceItemUpOrDown(SourceItem selectedItem, bool up)
{
int indexOfSelectedItem = this.ListView_Sources.Items.IndexOf(selectedItem);
// Don't move source up if it's already at the top
if (up && indexOfSelectedItem < 1)
{
return;
}
else if (!up && indexOfSelectedItem == this.ListView_Sources.Items.Count - 1)
{
return;
}
SourceItem otherItem = this.ListView_Sources.Items.GetItemAt(indexOfSelectedItem + (up ? -1 : 1)) as SourceItem;
// Exchange ordering with the item above
byte selectedItemOrdering = selectedItem.Ordering;
byte otherItemOrdering = otherItem.Ordering;
if (selectedItemOrdering == otherItemOrdering)
{
if (up)
{
otherItemOrdering -= 1;
}
else
{
otherItemOrdering += 1;
}
}
selectedItem.Ordering = otherItemOrdering;
otherItem.Ordering = selectedItemOrdering;
// Build new list
List <SourceItem> sourceItems = new List <SourceItem>();
foreach (SourceItem sourceItem in this.ListView_Sources.Items)
{
sourceItems.Add(sourceItem);
}
// Update sources
this.ListView_Sources.Items.Clear();
this.UpdateSources(sourceItems);
}
private void ListView_Sources_Drop(object sender, DragEventArgs e)
{
SourceItem droppedData = e.Data.GetData(typeof(SourceItem)) as SourceItem;
SourceItem target = ((ListViewItem)(sender)).DataContext as SourceItem;
sbyte removedIndex = (sbyte)ListView_Sources.Items.IndexOf(droppedData);
sbyte targetIndex = (sbyte)ListView_Sources.Items.IndexOf(target);
if (removedIndex == targetIndex)
{
return;
}
this.ListView_Sources.Items.RemoveAt(removedIndex);
this.ListView_Sources.Items.Insert(targetIndex, droppedData);
// Update tag indexes for ordering
foreach (SourceItem sourceItem in this.ListView_Sources.Items)
{
sourceItem.Ordering = (byte)(1 + this.ListView_Sources.Items.IndexOf(sourceItem));
}
}
/// <summary>
/// Called when clicking on the "Down" button on a SourceItem.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SourceItem_MoveDown(object sender, EventArgs e)
{
SourceItem sourceItem = sender as SourceItem;
this.MoveSourceItemUpOrDown(sourceItem, false);
}