Client API. The Codename One framework your app is built on: this runs on the device, not in a backend.

public abstract class AbstractGraphModel

The listener list, the lookups and the refusals every read-only model shares.

A subclass supplies getNodes, getEdges and getGroups. Every edit is refused until the matching method is overridden.

Constructors

`public` `GraphNode getNode(String id)`	The node with this id, or null.
`public` `GraphGroup getGroup(String id)`	The group with this id, or null.
`public boolean moveNode(GraphNode node, double x, double y)`	Moves a node to a world position.
`public` `GraphEdge connect(GraphNode source, GraphPort sourcePort, GraphNode target, GraphPort targetPort)`	Makes an edge from one node or port to another.
`public boolean removeEdge(GraphEdge edge)`	Removes an edge.
`public boolean removeNode(GraphNode node)`	Removes a node and every edge that touches it.
`public boolean renameNode(GraphNode node, String label)`	Gives a node a new label.
`public boolean setCollapsed(GraphGroup group, boolean collapsed)`	Collapses or expands a group.
`public void addChangeListener(GraphChangeListener l)`	Adds a listener told about every change.
`public void removeChangeListener(GraphChangeListener l)`	Removes a listener.
`protected void fireChanged()`	Tells every listener the model changed.

public AbstractGraphModel()

public GraphNode getNode(String id)

The node with this id, or null.

public GraphGroup getGroup(String id)

The group with this id, or null.

public boolean moveNode(GraphNode node, double x, double y)

Moves a node to a world position.

false when the model refuses the move

public GraphEdge connect(GraphNode source, GraphPort sourcePort, GraphNode target, GraphPort targetPort)

Makes an edge from one node or port to another.

public void removeChangeListener(GraphChangeListener l)

Removes a listener.

protected void fireChanged()

Tells every listener the model changed.