private void MoveBinding(DragAndDropArgs args, ActionTreeViewItem row)
{
TreeViewItem item;
var compositeChildrenCount = 0;
for (var i = 0; i < args.insertAtIndex; i++)
{
item = args.parentItem.children[i];
if (item.hasChildren)
{
compositeChildrenCount += item.children.Count;
}
}
args.insertAtIndex += compositeChildrenCount;
var action = (ActionTreeItem)args.parentItem;
var dstIndex = action.bindingsStartIndex + args.insertAtIndex;
var srcIndex = action.bindingsStartIndex + row.index;
if (dstIndex > srcIndex)
{
dstIndex--;
}
InputActionSerializationHelpers.MoveBinding(actionMapProperty, srcIndex, dstIndex);
if (row.hasChildren)
{
for (var i = 0; i < row.children.Count; i++)
{
if (dstIndex > srcIndex)
{
// when moving composite down
InputActionSerializationHelpers.MoveBinding(actionMapProperty, srcIndex, dstIndex);
continue;
}
// when moving composite up
dstIndex++;
srcIndex = action.bindingsStartIndex + (row.children[i] as CompositeTreeItem).index;
InputActionSerializationHelpers.MoveBinding(actionMapProperty, srcIndex, dstIndex);
}
}
}
protected override DragAndDropVisualMode HandleDragAndDrop(DragAndDropArgs args)
{
if (args.dragAndDropPosition != DragAndDropPosition.BetweenItems)
{
return(DragAndDropVisualMode.None);
}
var id = Int32.Parse(DragAndDrop.paths.First());
var item = FindItem(id, rootItem);
var row = (InputTreeViewLine)item;
if (!row.isDraggable || args.parentItem != row.parent)
{
return(DragAndDropVisualMode.None);
}
if (args.performDrop)
{
var compositeChildrenCount = 0;
for (var i = 0; i < args.insertAtIndex; i++)
{
item = args.parentItem.children[i];
if (item.hasChildren)
{
compositeChildrenCount += item.children.Count;
}
}
args.insertAtIndex += compositeChildrenCount;
var action = (ActionTreeItem)args.parentItem;
var map = (ActionMapTreeItem)args.parentItem.parent;
var dstIndex = action.bindingsStartIndex + args.insertAtIndex;
var srcIndex = action.bindingsStartIndex + row.index;
if (dstIndex > srcIndex)
{
dstIndex--;
}
InputActionSerializationHelpers.MoveBinding(map.elementProperty, srcIndex, dstIndex);
if (row.hasChildren)
{
for (var i = 0; i < row.children.Count; i++)
{
if (dstIndex > srcIndex)
{
// when moving composite down
InputActionSerializationHelpers.MoveBinding(map.elementProperty, srcIndex, dstIndex);
continue;
}
// when moving composite up
dstIndex++;
srcIndex = action.bindingsStartIndex + (row.children[i] as CompositeTreeItem).index;
InputActionSerializationHelpers.MoveBinding(map.elementProperty, srcIndex, dstIndex);
}
}
m_ApplyAction();
DragAndDrop.AcceptDrag();
//since there is no easy way to know the id of the element after reordering
//instead of updating the selected item, we leave the UI without selection
if (OnSelectionChanged != null)
{
OnSelectionChanged();
}
}
return(DragAndDropVisualMode.Move);
}
