Package com.google.gwt.view.client

Class SingleSelectionModel<T>

java.lang.Object
com.google.gwt.view.client.SelectionModel.AbstractSelectionModel<T>
com.google.gwt.view.client.SingleSelectionModel<T>
Type Parameters:
T - the record data type
All Implemented Interfaces:
HasHandlers, ProvidesKey<T>, SelectionChangeEvent.HasSelectionChangedHandlers, SelectionModel<T>, SetSelectionModel<T>
public class SingleSelectionModel<T> extends SelectionModel.AbstractSelectionModel<T> implements SetSelectionModel<T>
A simple selection model that allows only one item to be selected a a time.

  • Constructor Details

    • SingleSelectionModel

      public SingleSelectionModel()
      Constructs a SingleSelectionModel without a key provider.

    • SingleSelectionModel

      public SingleSelectionModel(ProvidesKey<T> keyProvider)
      Constructs a SingleSelectionModel with the given key provider.
      Parameters:
      keyProvider - an instance of ProvidesKey, or null if the item should act as its own key

  • Method Details

    • clear

      public void clear()
      Description copied from interface: SetSelectionModel
      Clears the current selection.
      Specified by:
      clear in interface SetSelectionModel<T>

    • getSelectedObject

      public T getSelectedObject()
      Gets the currently-selected item.
      Returns:
      the selected item

    • getSelectedSet

      public Set<T> getSelectedSet()
      Description copied from interface: SetSelectionModel
      Get the set of selected items.
      Specified by:
      getSelectedSet in interface SetSelectionModel<T>
      Returns:
      the set of selected items

    • isSelected

      public boolean isSelected(T item)
      Description copied from interface: SelectionModel
      Check if an object is selected.
      Specified by:
      isSelected in interface SelectionModel<T>
      Parameters:
      item - the object
      Returns:
      true if selected, false if not

    • setSelected

      public void setSelected(T item, boolean selected)
      Description copied from interface: SelectionModel
      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.
      Specified by:
      setSelected in interface SelectionModel<T>
      Parameters:
      item - the object to select or deselect
      selected - true to select, false to deselect

    • fireSelectionChangeEvent

      protected void fireSelectionChangeEvent()
      Description copied from class: SelectionModel.AbstractSelectionModel
      Fire a SelectionChangeEvent. Multiple firings may be coalesced.
      Overrides:
      fireSelectionChangeEvent in class SelectionModel.AbstractSelectionModel<T>