/// <summary>
/// Handle a toolbar button being dropped, either from the customisation panel onto the
/// toolbar or from the toolbar itself.
/// </summary>
private void InternalHandleCustomDrop()
{
Point screenDropLocation = Cursor.Position;
Control form = TopLevelControl;
if (form == null || !form.Bounds.Contains(screenDropLocation))
{
return;
}
Control dropControl = WindowFromPoint(form, form.PointToClient(screenDropLocation));
if (dropControl != null)
{
// Change parent if we dropped on the search field's text box or icon.
if (dropControl.Parent is CRSearchField)
{
dropControl = dropControl.Parent;
}
// If we dropped on a toolbar button, separator control or the search field, switch to
// the parent for consistency.
if (dropControl is CRRoundButton || dropControl is PictureBox || dropControl is CRSearchField)
{
dropControl = dropControl.Parent;
}
// Dropping on the toolbar at this point means the new button is being inserted.
// Otherwise it is being deleted.
Point dropLocation = dropControl.PointToClient(screenDropLocation);
CRToolbarItemCollection collection = CRToolbarItemCollection.DefaultCollection;
if (dropControl is CRToolbar)
{
if (_dragSource != null)
{
collection.Remove(_dragSource);
Controls.Remove(_dragSource.Control);
Relayout();
}
else
{
CRToolbarItem button = MatchingItem(_draggedButton);
if (button != null && button.Type != CRToolbarItemType.Space && button.Type != CRToolbarItemType.FlexibleSpace)
{
collection.Remove(button);
Relayout();
}
}
// Find the index of where to insert the button.
int index = IndexOfItemWithPoint(dropLocation);
// Add to the collection at the index.
collection.Insert(index, _draggedButton);
// Reload the toolbar.
Load();
Update();
}
else if (_dragSource != null)
{
collection.Remove(_dragSource);
Controls.Remove(_dragSource.Control);
Relayout();
Update();
}
}
_draggedButton.Control.Capture = false;
_hasDragItem = false;
_draggedButton = null;
}