Class DefaultGraphModel

java.lang.Object

com.codename1.graph.AbstractGraphModel

com.codename1.graph.DefaultGraphModel

All Implemented Interfaces:

GraphModel

public class DefaultGraphModel
extends AbstractGraphModel

An editable graph kept in memory.

Edits made by a user are checked by the ConnectionValidator before an edge is made. Ids of edges the model makes itself are "e" followed by a counter, skipping any already taken.

Constructor Summary

Constructors

Constructor	Description
DefaultGraphModel()

Method Summary

Modifier and Type	Method	Description
GraphEdge	addEdge(GraphEdge edge)	Adds an edge as it is, without asking the validator.
GraphEdge	addEdge(String sourceId, String targetId)	Adds an edge between two nodes with a generated id.
GraphGroup	addGroup(GraphGroup group)	Adds a group.
GraphNode	addNode(GraphNode node)	Adds a node, replacing one with the same id.
void	clear()	Removes every node, edge and group.
GraphEdge	connect(GraphNode source, GraphPort sourcePort, GraphNode target, GraphPort targetPort)	Makes an edge from one node or port to another.
GraphEdge	getEdge(String id)	The edge with this id, or null.
List<GraphEdge>	getEdges()	Every edge.
List<GraphEdge>	getEdges(GraphNode node)	The edges that touch a node.
List<GraphGroup>	getGroups()	Every group.
GraphNode	getNode(String id)	The node with this id, or null.
List<GraphNode>	getNodes()	Every node, in painting order: later nodes are drawn over earlier ones.
ConnectionValidator	getValidator()	The validator connect asks.
boolean	moveNode(GraphNode node, double x, double y)	Moves a node to a world position.
boolean	removeEdge(GraphEdge edge)	Removes an edge.
boolean	removeNode(GraphNode node)	Removes a node and every edge that touches it.
boolean	renameNode(GraphNode node, String label)	Gives a node a new label.
boolean	setCollapsed(GraphGroup group, boolean collapsed)	Collapses or expands a group.
void	setValidator(ConnectionValidator validator)	Replaces the validator; null restores the default one.

Methods inherited from class AbstractGraphModel

addChangeListener, fireChanged, getGroup, removeChangeListener

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DefaultGraphModel

public DefaultGraphModel()

Method Details

getNodes

public List<GraphNode> getNodes()

Description copied from interface: GraphModel

Every node, in painting order: later nodes are drawn over earlier ones.

getEdges

public List<GraphEdge> getEdges()

Description copied from interface: GraphModel

Every edge.

getGroups

public List<GraphGroup> getGroups()

Description copied from interface: GraphModel

Every group.

getNode

public GraphNode getNode(String id)

Description copied from interface: GraphModel

The node with this id, or null.

Specified by:

getNode in interface GraphModel

Overrides:

getNode in class AbstractGraphModel

getEdge

public GraphEdge getEdge(String id)

The edge with this id, or null.

getValidator

public ConnectionValidator getValidator()

The validator connect asks. Never null.

setValidator

public void setValidator(ConnectionValidator validator)

Replaces the validator; null restores the default one.

addNode

public GraphNode addNode(GraphNode node)

Adds a node, replacing one with the same id.

Returns

the node

addEdge

public GraphEdge addEdge(GraphEdge edge)

Adds an edge as it is, without asking the validator.

Returns

the edge

addEdge

public GraphEdge addEdge(String sourceId,
 String targetId)

Adds an edge between two nodes with a generated id.

addGroup

public GraphGroup addGroup(GraphGroup group)

Adds a group.

clear

public void clear()

Removes every node, edge and group.

getEdges

public List<GraphEdge> getEdges(GraphNode node)

The edges that touch a node.

moveNode

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

Description copied from interface: GraphModel

Moves a node to a world position.

Returns

false when the model refuses the move

Specified by:

moveNode in interface GraphModel

Overrides:

moveNode in class AbstractGraphModel

connect

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

Description copied from interface: GraphModel

Makes an edge from one node or port to another.

Parameters

• source: the node the edge leaves
• sourcePort: its output port, or null
• target: the node the edge enters
• targetPort: its input port, or null

Returns

the new edge, or null when the model refuses it

Specified by:

connect in interface GraphModel

Overrides:

connect in class AbstractGraphModel

removeEdge

public boolean removeEdge(GraphEdge edge)

Description copied from interface: GraphModel

Removes an edge.

Returns

false when the model refuses

Specified by:

removeEdge in interface GraphModel

Overrides:

removeEdge in class AbstractGraphModel

removeNode

public boolean removeNode(GraphNode node)

Description copied from interface: GraphModel

Removes a node and every edge that touches it.

Returns

false when the model refuses

Specified by:

removeNode in interface GraphModel

Overrides:

removeNode in class AbstractGraphModel

renameNode

public boolean renameNode(GraphNode node,
 String label)

Description copied from interface: GraphModel

Gives a node a new label.

Returns

false when the model refuses

Specified by:

renameNode in interface GraphModel

Overrides:

renameNode in class AbstractGraphModel

setCollapsed

public boolean setCollapsed(GraphGroup group,
 boolean collapsed)

Description copied from interface: GraphModel

Collapses or expands a group.

Returns

false when the model refuses

Specified by:

setCollapsed in interface GraphModel

Overrides:

setCollapsed in class AbstractGraphModel