/// <summary>
/// Constructor. It will create the <see cref="MultiColumnCollectionHeader"/> to use for the view.
/// </summary>
/// <param name="columns">The columns data used to initialize the header.</param>
/// <param name="sortDescriptions">The sort data used to initialize the header.</param>
/// <param name="sortedColumns">The sorted columns for the view.</param>
/// <remarks>The header will be added to the view in the <see cref="PrepareView"/> phase.</remarks>
public MultiColumnController(Columns columns, SortColumnDescriptions sortDescriptions, List <SortColumnDescription> sortedColumns)
{
m_MultiColumnHeader = new MultiColumnCollectionHeader(columns, sortDescriptions, sortedColumns)
{
viewDataKey = k_HeaderViewDataKey
};
m_MultiColumnHeader.columnSortingChanged += OnColumnSortingChanged;
m_MultiColumnHeader.contextMenuPopulateEvent += OnContextMenuPopulateEvent;
m_MultiColumnHeader.columnResized += OnColumnResized;
m_MultiColumnHeader.columns.columnAdded += OnColumnAdded;
m_MultiColumnHeader.columns.columnRemoved += OnColumnRemoved;
m_MultiColumnHeader.columns.columnReordered += OnColumnReordered;
m_MultiColumnHeader.columns.columnChanged += OnColumnsChanged;
m_MultiColumnHeader.columns.changed += OnColumnChanged;
}
/// <summary>
/// Unregisters events and removes the header from the hierarchy.
/// </summary>
public void Dispose()
{
if (m_View != null)
{
m_View.scrollView.horizontalScroller.valueChanged -= OnHorizontalScrollerValueChanged;
m_View.scrollView.contentViewport.UnregisterCallback <GeometryChangedEvent>(OnViewportGeometryChanged);
m_View = null;
}
m_MultiColumnHeader.columnContainer.UnregisterCallback <GeometryChangedEvent>(OnColumnContainerGeometryChanged);
m_MultiColumnHeader.columnSortingChanged -= OnColumnSortingChanged;
m_MultiColumnHeader.contextMenuPopulateEvent -= OnContextMenuPopulateEvent;
m_MultiColumnHeader.columnResized -= OnColumnResized;
m_MultiColumnHeader.columns.columnAdded -= OnColumnAdded;
m_MultiColumnHeader.columns.columnRemoved -= OnColumnRemoved;
m_MultiColumnHeader.columns.columnReordered -= OnColumnReordered;
m_MultiColumnHeader.columns.columnChanged -= OnColumnsChanged;
m_MultiColumnHeader.columns.changed -= OnColumnChanged;
m_MultiColumnHeader.RemoveFromHierarchy();
m_MultiColumnHeader.Dispose();
m_MultiColumnHeader = null;
}
