SelectionModel (vaadin-all 7.7.44 API)

Type Parameters:

T - Grid's row type

All Known Subinterfaces:

HasUserSelectionAllowed<T>, SelectionModel.Multi<T>, SelectionModel.Multi.Batched<T>, SelectionModel.None<T>, SelectionModel.Single<T>

All Known Implementing Classes:

AbstractRowHandleSelectionModel, AbstractSelectionModelConnector.AbstractSelectionModel, MultiSelectionModelConnector.MultiSelectionModel, SelectionModelMulti, SelectionModelNone, SelectionModelSingle, SingleSelectionModelConnector.SingleSelectionModel
```
public interface SelectionModel<T>
```
Common interface for all selection models.
Selection models perform tracking of selected rows in the Grid, as well as dispatching events when the selection state changes.

Since:

7.4

Author:

Vaadin Ltd

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`SelectionModel.Multi<T>`	Selection model that allows for several rows to be selected at once.
`static interface`	`SelectionModel.None<T>`	Interface for a selection model that does not allow anything to be selected.
`static interface`	`SelectionModel.Single<T>`	Selection model that allows a maximum of one row to be selected at any one time.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Collection<T>`	`getSelectedRows()`	Returns a Collection containing all selected rows.
`Renderer<Boolean>`	`getSelectionColumnRenderer()`	Return the `Renderer` responsible for rendering the selection column.
`boolean`	`isSelected(T row)`	Return true if the provided row is considered selected under the implementing selection model.
`void`	`reset()`	Resets the SelectionModel to the initial state.
`void`	`setGrid(Grid<T> grid)`	Tells this SelectionModel which Grid it belongs to.

- Method Detail
  - isSelected
```
boolean isSelected(T row)
```
    Return true if the provided row is considered selected under the implementing selection model.
    
    Parameters:
    
    row - row object instance
    
    Returns:
    
    true, if the row given as argument is considered selected.
  - getSelectionColumnRenderer
```
Renderer<Boolean> getSelectionColumnRenderer()
```
    Return the Renderer responsible for rendering the selection column.
    
    Returns:
    
    a renderer instance. If null is returned, a selection column will not be drawn.
  - setGrid
```
void setGrid(Grid<T> grid)
```
    Tells this SelectionModel which Grid it belongs to.
    Implementations are free to have this be a no-op. This method is called internally by Grid.
    
    Parameters:
    
    grid - a Grid instance; null when removing from Grid
  - reset
```
void reset()
```
    Resets the SelectionModel to the initial state.
    This method can be called internally, for example, when the attached Grid's data source changes.
  - getSelectedRows
```
Collection<T> getSelectedRows()
```
    Returns a Collection containing all selected rows.
    
    Returns:
    
    a non-null collection.