Package org.jgraph.graph

Class GraphContext

java.lang.Object
org.jgraph.graph.GraphContext
All Implemented Interfaces:
CellMapper
public class GraphContext extends Object implements CellMapper

  • Field Details

    • PREVIEW_EDGE_GROUPS

      public static boolean PREVIEW_EDGE_GROUPS
      Switch to enable the preview of edge groups, that is, edges that 1 or more children, as part of the context cells.

    • graph

      protected JGraph graph
      Reference to the parent graph.

    • graphLayoutCache

      protected transient GraphLayoutCache graphLayoutCache
      Reference to the graphs GraphLayoutCache.

    • cells

      protected Object[] cells
      Reference to the cells.

    • allCells

      protected Set allCells
      Set of all cells including all descendants.

    • cellSet

      protected Set cellSet
      Set of all cells including all descendants.

    • cellCount

      protected int cellCount
      Number of all descendants without ports.

    • views

      protected Map views
      Map of (cell, view) pairs including ports.

  • Constructor Details

    • GraphContext

      public GraphContext(JGraph graph, Object[] cells)
      Constructs a graph context for cells with respect to the connections defined in the model, and the views in the view of graph.

  • Method Details

    • isEmpty

      public boolean isEmpty()
      Returns true if this object contains no cells.

    • getDescendantCount

      public int getDescendantCount()
      Returns the number of all objects (cells and children) in this object.

    • getGraph

      public JGraph getGraph()
      Returns the graph that was passed to the constructor.

    • getCells

      public Object[] getCells()
      Returns the array that was passed to the constructor.

    • contains

      public boolean contains(Object node)
      Returns true if node or one of its ancestors is contained in this object and visible in the original graph.

    • createTemporaryCellViews

      public CellView[] createTemporaryCellViews()
      Returns an new consistent array of views for cells.

    • createTemporaryPortViews

      public CellView[] createTemporaryPortViews()
      Returns an new consistent array of views for the ports.

    • createTemporaryContextViews

      public CellView[] createTemporaryContextViews()
      Returns an new consistent array of views for the edges that are connected to and not contained in cells.

    • createTemporaryContextViews

      public CellView[] createTemporaryContextViews(Set cellSet)
      Returns an new consistent array of views for the edges that are connected to and not contained in cellSet.

    • getMapping

      public CellView getMapping(Object cell, boolean create)
      Returns the CellView that is mapped to cell in the graph context. New views are created based on whether cell is contained in the context. The create-flag is ignored.
      Specified by:
      getMapping in interface CellMapper
      create - whether a new view should created if a view does not already exist

    • createMapping

      public CellView createMapping(Object cell)

    • disconnect

      public ConnectionSet disconnect(CellView[] cells)
      Disconnects the edges in cells from the sources and targets that are not in this context and returns a ConnectionSet that defines the disconnection.

    • putMapping

      public void putMapping(Object cell, CellView view)
      Associates cell with view in the graph context.
      Specified by:
      putMapping in interface CellMapper
      Parameters:
      cell - the cell that constitutes the model element
      view - the view that constitutes the view element