org.eclipse.viatra.addon.viewers.runtime.model.listeners

## Interface IViewerStateListener

- All Known Implementing Classes:
    AbstractViewerStateListener, ListContentProvider, TreeContentProvider, ViewerState, ZestContentProvider

      public interface IViewerStateListener

  Listener interface for the appearance and disappearance of elements.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `containmentAppeared(Containment containment)`
    `void` | `containmentDisappeared(Containment containment)`
    `void` | `edgeAppeared(Edge edge)`
    `void` | `edgeDisappeared(Edge edge)`
    `void` | `itemAppeared(Item item)`
    `void` | `itemDisappeared(Item item)`

- - ### Method Detail

    - #### itemAppeared

          void itemAppeared(Item item)

    - #### itemDisappeared

          void itemDisappeared(Item item)

    - #### containmentAppeared

          void containmentAppeared(Containment containment)

    - #### containmentDisappeared

          void containmentDisappeared(Containment containment)

    - #### edgeAppeared

          void edgeAppeared(Edge edge)

    - #### edgeDisappeared

          void edgeDisappeared(Edge edge)