SelectionModel (GWT Javadoc)

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## com.google.gwt.view.client
Interface SelectionModel<T>

Type Parameters:
  `T` - the data type of records in the list

All Superinterfaces:
  HasHandlers, ProvidesKey<T>, SelectionChangeEvent.HasSelectionChangedHandlers

All Known Subinterfaces:
  SetSelectionModel<T>

All Known Implementing Classes:
  DefaultSelectionModel, MultiSelectionModel, NoSelectionModel, OrderedMultiSelectionModel, SelectionModel.AbstractSelectionModel, SingleSelectionModel

    public interface SelectionModel<T>

extends SelectionChangeEvent.HasSelectionChangedHandlers, ProvidesKey<T>

A model for selection within a list.

Nested Class Summary
`static class` | `SelectionModel.AbstractSelectionModel<T>` A default implementation of `SelectionModel` that provides listener addition and removal.

Method Summary
`HandlerRegistration` | `addSelectionChangeHandler(SelectionChangeEvent.Handler handler)` Adds a `SelectionChangeEvent` handler.
`boolean` | `isSelected(T object)` Check if an object is selected.
`void` | `setSelected(T object, boolean selected)` Set the selected state of an object and fire a `SelectionChangeEvent` if the selection has changed.

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
`fireEvent`

Methods inherited from interface com.google.gwt.view.client.ProvidesKey
`getKey`

Method Detail

### addSelectionChangeHandler

    HandlerRegistration addSelectionChangeHandler(SelectionChangeEvent.Handler handler)

  Adds a `SelectionChangeEvent` handler.

  Specified by:
    `addSelectionChangeHandler` in interface `SelectionChangeEvent.HasSelectionChangedHandlers`
  Parameters:
    `handler` - the handler
  Returns:
    the registration for the event

### isSelected

    boolean isSelected(T object)

  Check if an object is selected.

  Parameters:
    `object` - the object
  Returns:
    true if selected, false if not

### setSelected

    void setSelected(T object,
                     boolean selected)

  Set the selected state of an object and fire a `SelectionChangeEvent` if the selection has changed. Subclasses should not fire an event in the case where selected is true and the object was already selected, or selected is false and the object was not previously selected.

  Parameters:
    `object` - the object to select or deselect
    `selected` - true to select, false to deselect

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