IColumn (Wicket Extensions 9.22.0 API)

Type Parameters:

T - the type of the object that will be rendered in this column's cells

S - the type of the sorting parameter

All Superinterfaces:

ICellPopulator<T>, org.apache.wicket.util.io.IClusterable, org.apache.wicket.model.IDetachable, Serializable

All Known Subinterfaces:

IExportableColumn<T,S>, IFilteredColumn<T,S>, IStyledColumn<T,S>, ITreeColumn<T,S>

All Known Implementing Classes:

AbstractColumn, AbstractExportableColumn, AbstractTreeColumn, ChoiceFilteredPropertyColumn, FilteredAbstractColumn, FilteredPropertyColumn, HeaderlessColumn, LambdaColumn, PropertyColumn, TextFilteredPropertyColumn, TreeColumn
```
public interface IColumn<T,S>
extends ICellPopulator<T>
```
An interface that represents a column in the DefaultDataTable

Author:

Igor Vaynberg ( ivaynberg )

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`org.apache.wicket.Component`	`getHeader(String componentId)`	Returns the component that will be used as the header for the column.
`default int`	`getHeaderColspan()`
`default int`	`getHeaderRowspan()`
`S`	`getSortProperty()`	Returns the property that this header sorts on.
`default boolean`	`isSortable()`	Returns true if the header of the column should be sortable

Methods inherited from interface org.apache.wicket.extensions.markup.html.repeater.data.grid.ICellPopulator
populateItem

Methods inherited from interface org.apache.wicket.model.IDetachable
detach

- Method Detail
  - getHeader
```
org.apache.wicket.Component getHeader(String componentId)
```
    Returns the component that will be used as the header for the column. This component will be contained in <span> tags.
    
    Parameters:
    
    componentId - component id for the returned Component
    
    Returns:
    
    component that will be used as the header for the column
  - getSortProperty
```
S getSortProperty()
```
    Returns the property that this header sorts on. If null is returned the header will be not sortable.
    
    Returns:
    
    the sort property
  - isSortable
```
default boolean isSortable()
```
    Returns true if the header of the column should be sortable
    
    Returns:
    
    true if header should be sortable
  - getHeaderRowspan
```
default int getHeaderRowspan()
```
    Returns:
    
    The number of rows the header of this column should span
  - getHeaderColspan
```
default int getHeaderColspan()
```
    Returns:
    
    The number of columns the header of this column should span