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java.lang.Object y.util.GraphHider
public class GraphHider
Provides functionality to hide and unhide nodes and edges of a graph temporarily for algorithmic operations.
This class can be used to temporarily hide away certain elements of a graph and to unhide that parts at a later time again. Instances of this class keep track of graph elements that were hidden from a graph in order to make them visible again at a later time.
Note that this class should not be used to hide elements from a Graph2D for pure hiding purposes. Since this class will by default prevent the graph instance from firing events, other code might cease to work correctly. Use this class for short term removal of nodes and edges, only.
Field Summary  

protected EdgeList 
hiddenEdges
holds the list of the hidden edges in stack order 
protected NodeList 
hiddenNodes
holds the list of the hidden nodes in stack order 
Constructor Summary  

GraphHider(Graph g)
Instantiates a new GraphHider for the given graph. 
Method Summary  

Graph 
getGraph()
Returns the Graph for which this GraphHider was
created. 
EdgeCursor 
hiddenEdges()
The edges that are currently hidden 
NodeCursor 
hiddenNodes()
The nodes that are currently hidden 
void 
hide(Edge e)
Hides the given edge from the graph. 
void 
hide(EdgeCursor ec)
Hides the given edges from the graph. 
void 
hide(EdgeList el)
Hides the given list of edges from the graph. 
void 
hide(Node v)
Hides the given node and all it's adjacent edges from the graph. 
void 
hide(NodeCursor nc)
Hides the given nodes from the graph. 
void 
hide(NodeList nl)
Hides the given list of nodes from the graph. 
void 
hide(YCursor cursor)
Hides the given elements from the graph. 
void 
hideAll()
Hides all nodes and edges from this graph. 
void 
hideEdges()
Hides all edges from this graph. 
void 
hideMultipleEdges()
Hides multiple edges from the graph. 
void 
hideSelfLoops()
Hides all selfloop edges from this graph. 
static void 
hideSubgraph(Graph graph,
EdgeCursor ec)
Hides the subgraph induced by the given edges from the given graph. 
boolean 
isFireGraphEventsEnabled()
Returns whether or not this hider should fire graph events. 
void 
setFireGraphEventsEnabled(boolean fireEvents)
Specifies whether or not this hider should fire graph events when adding or removing items from the graph. 
void 
simplifyGraph()
Hides all selfloops and multiple edges from the graph. 
protected void 
unhide(Edge e)
This method will be called whenever the hider is requested to unhide the given edge from the graph. 
protected void 
unhide(Node v)
This method will be called whenever the hider is requested to unhide the given node from the graph. 
void 
unhideAll()
Unhides all formerly hidden elements in the graph. 
void 
unhideEdge(Edge e)
Unhides the given edge. 
void 
unhideEdges()
Unhides all formerly hidden edges in the graph. 
void 
unhideEdges(EdgeList edges)
Unhides the given edges. 
void 
unhideNode(Node v,
boolean unhideAdjacentEdges)
Unhides the given node and if requested its adjacent edges. 
void 
unhideNodes()
Unhides all formerly hidden nodes in the graph. 
void 
unhideNodes(NodeList nodes,
boolean unhideAdjacentEdges)
Unhides the given nodes and if requested its adjacent edges. 
static void 
unhideSubgraph(Graph graph,
EdgeCursor ec)
Unhides the subgraph induced by the given edges in the given graph. 
Methods inherited from class java.lang.Object 

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

protected EdgeList hiddenEdges
protected NodeList hiddenNodes
Constructor Detail 

public GraphHider(Graph g)
Method Detail 

public void setFireGraphEventsEnabled(boolean fireEvents)
public boolean isFireGraphEventsEnabled()
public void hideAll()
public void hideEdges()
public void hideSelfLoops()
public void simplifyGraph()
The overall effect of this method is that the minimum number of edges are hidden from the graph such that it contains no selfloops and no multiple edges anymore. The hidden edges will be stored so that they can be unhidden again at a later time.
public void hideMultipleEdges()
public void unhideAll()
public void unhideNodes()
public void unhideEdges()
public void hide(Node v)
public void hide(Edge e)
public void hide(EdgeList el)
public void hide(NodeList nl)
public void hide(EdgeCursor ec)
public void hide(NodeCursor nc)
public void hide(YCursor cursor)
public static void unhideSubgraph(Graph graph, EdgeCursor ec)
Parts of the subgraph that are already contained in the given graph will not be unhidden and pose no problem to this method.
public static void hideSubgraph(Graph graph, EdgeCursor ec)
public Graph getGraph()
Graph
for which this GraphHider
was
created.
Graph
for which this GraphHider
was
created.protected void unhide(Edge e)
public void unhideEdge(Edge e)
hiddenEdges
.
Note that unhiding an edge whose source/target is not in the graph (e.g., because it's currently hidden/removed) causes an exception. Hence, in such cases, you first have to unhide/reinsert the corresponding endpoints.
e
 the edge that will be unhiddenpublic void unhideEdges(EdgeList edges)
hiddenEdges
.
Note that unhiding an edge whose source/target is not in the graph (e.g., because it's currently hidden/removed) causes an exception. Hence, in such cases, you first have to unhide/reinsert the corresponding endpoints.
edges
 the edges that will be unhiddenpublic void unhideNodes(NodeList nodes, boolean unhideAdjacentEdges)
hiddenNodes
and hiddenEdges
.
nodes
 the nodes that will be unhiddenunhideAdjacentEdges
 whether of not to unhide previously hidden edges connected at the given nodes whose other end point
is not hidden, i.e. it is part of the graph.public void unhideNode(Node v, boolean unhideAdjacentEdges)
hiddenNodes
and hiddenEdges
.
v
 the node that will be unhiddenunhideAdjacentEdges
 whether of not to unhide previously hidden edges connected at v
whose other end point
is not hidden, i.e. it is part of the graph.protected void unhide(Node v)
public NodeCursor hiddenNodes()
public EdgeCursor hiddenEdges()

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