public interface GridHeader Toolbar of buttons shown at the top of the ListGrid (one button per column).ListGrid.setHeaderHeight(int), ListGrid.setShowHeader(java.lang.Boolean), ListGrid.headerTitleClipped(int), ListGrid.headerHoverHTML(int, java.lang.String), com.smartgwt.client.widgets.grid.ListGrid#headerClick, HeaderDoubleClickEvent, ListGrid.displayHeaderContextMenu(com.smartgwt.client.widgets.Canvas, int[]), ListGrid.getHeaderContextMenuItems(java.lang.Integer), HeaderHoverEvent, ListGridField.getSpannedHeaderBaseStyle(), ListGrid.getSpannedHeaderBaseStyle(), ListGrid.getHeader(), ListGrid.getHeaderContextMenu(), ListGrid.getSpanContextMenu(), ListGrid.getHeaderHeight(), ListGrid.getShowHeader(), ListGrid.getHeaderBarStyle(), ListGrid.getHeaderBackgroundColor(), com.smartgwt.client.widgets.grid.ListGrid#getHeaderButtonConstructor, ListGrid.getHeaderBaseStyle(), ListGrid.getHeaderTitleStyle(), ListGrid.getFrozenHeaderBaseStyle(), ListGrid.getFrozenHeaderTitleStyle(), com.smartgwt.client.widgets.grid.ListGrid#getHeaderButtonDefaults, ListGrid.getHeaderButtonProperties(), ListGrid.getClipHeaderTitles(), com.smartgwt.client.widgets.grid.ListGrid#getSorterConstructor, ListGrid.getSorterButtonTitle(), com.smartgwt.client.widgets.grid.ListGrid#getSorterDefaults, com.smartgwt.client.widgets.grid.ListGrid#getSorterProperties, ListGrid.getShowHeaderContextMenu(), ListGrid.getShowHeaderSpanContextMenu()