Class Grid.StaticSectionUpdater

Constructor Detail

• StaticSectionUpdater

  public StaticSectionUpdater​(Grid.StaticSection<?> section,
                              RowContainer container)

  Constructs an updater instance for the given section.

  Parameters:

  section - the section that needs an updater

  container - the row container of the given section

Method Detail

• update

  public void update​(Row row,
                     Iterable<FlyweightCell> cellsToUpdate)

  Description copied from interface: EscalatorUpdater

  Renders a row contained in a row container.

  Note: If rendering of cells is deferred (e.g. because asynchronous data retrieval), this method is responsible for explicitly displaying some placeholder data (empty content is valid). Because the cells (and rows) in an escalator are recycled, failing to reset a cell's presentation will lead to wrong data being displayed in the escalator.

  For performance reasons, the escalator will never autonomously clear any data in a cell.

  Specified by:

  update in interface EscalatorUpdater

  Parameters:

  row - Information about the row that is being updated. Note: You should not store nor reuse this reference.

  cellsToUpdate - A collection of cells that need to be updated. Note: You should neither store nor reuse the reference to the iterable, nor to the individual cells.

• preAttach

  public void preAttach​(Row row,
                        Iterable<FlyweightCell> cellsToAttach)

  Description copied from interface: EscalatorUpdater

  Called before attaching new cells to the escalator.

  Specified by:

  preAttach in interface EscalatorUpdater

  Parameters:

  row - Information about the row to which the cells will be added. Note: You should not store nor reuse this reference.

  cellsToAttach - A collection of cells that are about to be attached. Note: You should neither store nor reuse the reference to the iterable, nor to the individual cells.

• postAttach

  public void postAttach​(Row row,
                         Iterable<FlyweightCell> attachedCells)

  Description copied from interface: EscalatorUpdater

  Called after attaching new cells to the escalator.

  Specified by:

  postAttach in interface EscalatorUpdater

  Parameters:

  row - Information about the row to which the cells were added. Note: You should not store nor reuse this reference.

  attachedCells - A collection of cells that were attached. Note: You should neither store nor reuse the reference to the iterable, nor to the individual cells.

• preDetach

  public void preDetach​(Row row,
                        Iterable<FlyweightCell> cellsToDetach)

  Description copied from interface: EscalatorUpdater

  Called before detaching cells from the escalator.

  Specified by:

  preDetach in interface EscalatorUpdater

  Parameters:

  row - Information about the row from which the cells will be removed. Note: You should not store nor reuse this reference.

  cellsToDetach - A collection of cells that are about to be detached. Note: You should neither store nor reuse the reference to the iterable, nor to the individual cells.

• getGrid

  protected Grid getGrid()

  Returns the Grid instance for this updater.

  Returns:

  the grid that is being updated

• postDetach

  public void postDetach​(Row row,
                         Iterable<FlyweightCell> detachedCells)

  Description copied from interface: EscalatorUpdater

  Called after detaching cells from the escalator.

  Specified by:

  postDetach in interface EscalatorUpdater

  Parameters:

  row - Information about the row from which the cells were removed. Note: You should not store nor reuse this reference.

  detachedCells - A collection of cells that were detached. Note: You should neither store nor reuse the reference to the iterable, nor to the individual cells.