Graph2D (yFiles-2.5.0.4 API)

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y.view
Class Graph2D

java.lang.Object
  y.base.Graph
      y.layout.LayoutGraph
          y.view.Graph2D

All Implemented Interfaces:: GraphInterface, GraphLayout

public class Graph2D
extends LayoutGraph
extends LayoutGraph

This class represents a graph with additional 2D support. It can be displayed within a Graph2DView. The visual representation of nodes and edges are encapsulated in so called realizer objects. A node in this graph has a NodeRealizer object associated with it and an edge in this graph has a EdgeRealizer object associated with it.

All geometric or visual changes that are performed to this graph result in an attribute or type change of an associated realizer. If nodes or edges get newly created in this graph then a default node or edge realizer will be automatically associated with these elements. To change the default appearance of edges or nodes one can assign different default realizers to the graph by using the methods setDefaultEdgeRealizer(EdgeRealizer) and setDefaultNodeRealizer(NodeRealizer).

Nested Class Summary
`static interface`	`Graph2D.BackupRealizersHandler` Implementations of this interface are responsible for backing up the node and edge realizer of a `Graph2D`.

Field Summary

Fields inherited from class y.base.Graph
`AFTER, BEFORE`

Constructor Summary
`Graph2D()` Constructs an empty Graph2D.
`Graph2D(Graph2D graph)` Copy constructor of Graph2D.
`Graph2D(Graph2D graph, YCursor nodeSubset)` Creates a copy of the given subgraph.

Method Summary
`void`	`addDrawable(Drawable d)` Adds a drawable to this graph.
`void`	`addGraph2DListener(Graph2DListener listener)` Adds the given Graph2DListener to this graph.
`void`	`addGraph2DSelectionListener(Graph2DSelectionListener listener)` Adds the given Graph2DSelectionListener to this graph.
`void`	`backupRealizers()` A method that supports undoability of the changes performed on node and edge realizers.
`void`	`backupRealizers(EdgeCursor ec)` A method that supports undoability of the changes performed on the edge realizers associated with the given edges.
`void`	`backupRealizers(NodeCursor nc)` A method that supports undoability of the changes performed on the node realizers associated with the given nodes.
`BendCursor`	`bends()` Returns a bend cursor over all bends in this graph.
`void`	`changeEdge(Edge e, Node newSource, Edge sourceReference, int sourceD, Node newTarget, Edge targetReference, int targetD)` Redefines an edge's end points and fires corresponding notification events to inform registered listeners.
`void`	`changeEdge(Edge e, Node newSource, Node newTarget)` Redefines an edge's end points and fires corresponding notification events to inform registered listeners.
`Graph`	`createCopy()` Creates a copy of this graph.
`Edge`	`createEdge(Node v, Edge e1, Node w, Edge e2, int d1, int d2)` Creates a new edge in this graph.
`Edge`	`createEdge(Node v, Edge e1, Node w, Edge e2, int d1, int d2, EdgeRealizer r)` Creates a new edge with given realizer in this graph.
`Edge`	`createEdge(Node v, Node w)` Creates a new edge from node `v` to node `w`.
`Edge`	`createEdge(Node v, Node w, EdgeRealizer r)` Creates a new edge in this graph.
`Graph`	`createGraph()` Creates an empty view of the same type as this graph.
`protected GraphCopier.CopyFactory`	`createGraphCopyFactory()` Creates and returns a new instance of `Graph2DCopyFactory.HierarchicGraph2DCopyFactory`
`Node`	`createNode()` Creates a new node.
`Node`	`createNode(double x, double y)` Creates a new node with center location `(x,y)`.
`Node`	`createNode(double x, double y, double w, double h, String label)` Creates a new node with center location `(x,y)`, dimension `(w,h)` and given label text.
`Node`	`createNode(double x, double y, String label)` Creates a new node with center location `(x,y)` and given label text.
`Node`	`createNode(NodeRealizer r)` Creates a new node in this graph.
`YCursor`	`drawables()` Returns a cursor iterating over all Drawables known to this graph.
`void`	`fireGraph2DEvent(Object subject, String name, Object oldValue, Object newValue)` Fires a Graph2DEvent
`void`	`fireGraph2DSelectionEvent(Object subject)` Fires a GraphSelectionEvent for the given subject
`void`	`fitGraph2DView()` Invokes `fitContent()` on the current view, if the current view is of type `Graph2DView`.
`Graph2D.BackupRealizersHandler`	`getBackupRealizersHandler()` Returns the handler for backupRealizer method calls.
`Rectangle`	`getBoundingBox()` Returns the bounding box of this graph.
`Rectangle`	`getBoundingBox(byte layer)` Returns the bounding box of all graph objects residing in the specified layer.
`double`	`getCenterX(Node v)` Returns the center x-coord of the given node.
`double`	`getCenterY(Node v)` Returns the center y-coord of the given node.
`View`	`getCurrentView()` Returns the current view.
`EdgeRealizer`	`getDefaultEdgeRealizer()` Returns the default edge realizer that will be bound to newly created edges.
`NodeRealizer`	`getDefaultNodeRealizer()` Returns the default node realizer that will be bound to newly created nodes.
`Edge`	`getFeature(EdgeLabelLayout labelLayout)` Returns the node which is described by a given label layout.
`Node`	`getFeature(NodeLabelLayout labelLayout)` Returns the node which is described by a given label layout.
`Iterator`	`getGraph2DListeners()` Returns an iterator that grants access to all registered Graph2DListeners
`Iterator`	`getGraph2DSelectionListeners()` Returns an iterator that grants access to all registered Graph2DSelectionListeners
`double`	`getHeight(Node v)` Returns the height of the given node.
`HierarchyManager`	`getHierarchyManager()` Returns the HierarchyManager instance that manages this graph, or `null` if the graph is not part of any graph hierarchy.
`HitInfo`	`getHitInfo(double x, double y)` Returns hit info containing only the first hit object that was found.
`HitInfo`	`getHitInfo(double x, double y, boolean firstHitOnly)` Returns objects that are hit on position (x,y).
`EdgeLabelLayout[]`	`getLabelLayout(Edge edge)` Returns `EdgeLabelLayout` objects which describe the layouts of the labels that belong to the given edge.
`NodeLabelLayout[]`	`getLabelLayout(Node node)` Returns `NodeLabelLayout` objects which describe the layouts of the labels that belong to the given node.
`String`	`getLabelText(Edge e)` Returns the label text for the given edge.
`String`	`getLabelText(Node v)` Returns the label text for the given node.
`EdgeLayout`	`getLayout(Edge edge)` Returns the layout information for an edge in the drawing.
`NodeLayout`	`getLayout(Node node)` Returns the layout information for a node in the drawing.
`EdgeRealizer`	`getRealizer(Edge e)` Returns the EdgeRealizer bound to the given edge.
`NodeRealizer`	`getRealizer(Node v)` Returns the NodeRealizer bound to the given node.
`URL`	`getURL()` Returns the URL associatioed with this graph.
`YCursor`	`getViews()` Returns a cursor iterating through all registered views.
`double`	`getWidth(Node v)` Returns the width of the given node.
`double`	`getX(Node v)` Returns the upper left x-coord of the given node.
`double`	`getY(Node v)` Returns the upper left y-coord of the given node.
`boolean`	`isSelected(Edge e)` Returns the selection state of the given edge.
`boolean`	`isSelected(Node v)` Returns the selection state of the given node.
`boolean`	`isSelectionEmpty()` Returns `true` iff neither edge nor node nor bend in this graph is selected.
`boolean`	`isSelectionSingleton()` Returns `true` if and only if exactly one object is selected.
`void`	`moveBends(BendCursor bc, double dx, double dy)` Moves the given bends by `(dx,dy)`.
`void`	`moveNodes(NodeCursor nc, double dx, double dy)` Moves the given nodes by `(dx,dy)`.
`void`	`registerView(View v)` Adds this view to the set of views that display this graph.
`void`	`removeDrawable(Drawable d)` Removes the given drawable from this graph.
`void`	`removeGraph2DListener(Graph2DListener listener)` Removes the given Graph2DListener from this graph.
`void`	`removeGraph2DSelectionListener(Graph2DSelectionListener listener)` Removes the given Graph2DSelectionListener from this graph.
`void`	`removeSelection()` Removes all selected objects from this graph.
`void`	`removeView(View v)` Removes this view from the set of views that display this graph.
`void`	`selectAllNodesAndBends(boolean s)` Sets the selection state for all nodes and bends.
`void`	`selectBoxContent(double x, double y, double width, double height)` Selects the graph objects in a rectangle defined by the given arguments.
`void`	`selectBoxContent(Rectangle r)` Selects the graph objects in given rectangle.
`BendCursor`	`selectedBends()` Returns a bend cursor for all momentarily selected bends in this graph.
`EdgeCursor`	`selectedEdges()` Returns an edge cursor for all momentarily selected edges in this graph.
`NodeCursor`	`selectedNodes()` Returns a node cursor for all momentarily selected nodes in this graph.
`void`	`setBackupRealizersHandler(Graph2D.BackupRealizersHandler brh)` Sets the delegate class that is responsible for acting upon calls to the methods `backupRealizers(EdgeCursor)` and `backupRealizers(NodeCursor)`.

y.view Class Graph2D

y.view
Class Graph2D