我需要使用prefuse可视化xml文件，但由于它的大小，我必须一次只加载文件的一部分并将它们表示为prefuse中的树结构。我设法加载并可视化第一个树，包括所有xml elemts到达预定深度，但如果我想在XML文件中看到更深层的元素，我需要创建一个新的prefuse树，新的root是在新深度读取的第一个元素，并继续读取元素，直到最大深度等等。我在加载和在预熔中可视化这些子树时遇到问题。目前我进行了一个调用，例如currentTree.clear（）;并尝试在阅读过程中使用currentTree，但我得到这样的错误：
prefuse.Display$InputEventCapturer fireItemClicked
WARNING: Exception thrown by Control: java.lang.ArrayIndexOutOfBoundsException: -1
java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.get(ArrayList.java:324)
at prefuse.data.Table.getColumn(Table.java:457)
at prefuse.data.Table.setString(Table.java:1427)
at prefuse.data.tuple.TableTuple.setString(TableTuple.java:455)
at loader.TreeLoader.downLevel(TreeLoader.java:322)
at visualizations.PrefuseTreeVisual$2.itemClicked(PrefuseTreeVisual.java:302)
at prefuse.Display$InputEventCapturer.fireItemClicked(Display.java:1738)
at prefuse.Display$InputEventCapturer.mouseClicked(Display.java:1590)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252)
at java.awt.Component.processMouseEvent(Component.java:6292)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6054)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4652)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4482)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4247)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4482)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
at java.awt.EventQueue.access$000(EventQueue.java:85)
at java.awt.EventQueue$1.run(EventQueue.java:603)
at java.awt.EventQueue$1.run(EventQueue.java:601)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:617)
at java.awt.EventQueue$2.run(EventQueue.java:615)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
08.05.2012 11:38:47 prefuse.action.ActionList run
WARNING: Row index out of bounds: -1
java.lang.IllegalArgumentException: Row index out of bounds: -1
at prefuse.data.column.DoubleColumn.getDouble(DoubleColumn.java:112)
at prefuse.data.Table.getDouble(Table.java:1255)
at prefuse.visual.VisualTable.getX(VisualTable.java:407)
at prefuse.visual.tuple.TableVisualItem.getX(TableVisualItem.java:270)
at visualizations.PrefuseTreeVisual$AutoPanAction.run(PrefuseTreeVisual.java:433)
at prefuse.action.ActionList.run(ActionList.java:79)
at prefuse.action.Action.run(Action.java:122)
at prefuse.activity.Activity.runActivity(Activity.java:165)
at prefuse.activity.ActivityManager.run(ActivityManager.java:365)
我认为树结构附加了一些监听器，当我在树上调用clear（）时，那些监听器不会被清除。我如何清除那些听众？或者有更简单的方法来做我想做的事情？提前谢谢！
造成所有麻烦的代码在itemClicked函数
package visualizations;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
import loader.TreeLoader;
import prefuse.Constants;
import prefuse.Display;
import prefuse.Visualization;
import prefuse.action.Action;
import prefuse.action.ActionList;
import prefuse.action.ItemAction;
import prefuse.action.RepaintAction;
import prefuse.action.animate.ColorAnimator;
import prefuse.action.animate.LocationAnimator;
import prefuse.action.animate.QualityControlAnimator;
import prefuse.action.animate.VisibilityAnimator;
import prefuse.action.assignment.ColorAction;
import prefuse.action.assignment.FontAction;
import prefuse.action.filter.FisheyeTreeFilter;
import prefuse.action.layout.CollapsedSubtreeLayout;
import prefuse.action.layout.graph.NodeLinkTreeLayout;
import prefuse.activity.SlowInSlowOutPacer;
import prefuse.controls.*;
import prefuse.data.Node;
import prefuse.data.Tree;
import prefuse.data.event.TupleSetListener;
import prefuse.data.io.DataIOException;
import prefuse.data.search.PrefixSearchTupleSet;
import prefuse.data.tuple.TupleSet;
import prefuse.render.AbstractShapeRenderer;
import prefuse.render.DefaultRendererFactory;
import prefuse.render.EdgeRenderer;
import prefuse.render.LabelRenderer;
import prefuse.util.ColorLib;
import prefuse.util.FontLib;
import prefuse.util.ui.JFastLabel;
import prefuse.util.ui.JSearchPanel;
import prefuse.visual.NodeItem;
import prefuse.visual.VisualItem;
import prefuse.visual.expression.InGroupPredicate;
import prefuse.visual.sort.TreeDepthItemSorter;
public class PrefuseTreeVisual extends Display {
//prefuse specific variables
private static final String tree = "tree";
private static final String treeNodes = "tree.nodes";
private static final String treeEdges = "tree.edges";
private LabelRenderer m_nodeRenderer;
private EdgeRenderer m_edgeRenderer;
private String m_label = "name";
private int m_orientation = Constants.ORIENT_LEFT_RIGHT;
private TreeLoader xmlLoader;
private Tree prefuseTree;
private JPanel panel;
private static Visualization vis;
public PrefuseTreeVisual() {
vis=new Visualization();
}
public void init(Tree t, String label) {
m_label = label;
this.setVisualization(vis);
vis.add(tree, t);
m_nodeRenderer = new LabelRenderer(m_label);
m_nodeRenderer.setRenderType(AbstractShapeRenderer.RENDER_TYPE_FILL);
m_nodeRenderer.setHorizontalAlignment(Constants.LEFT);
m_nodeRenderer.setRoundedCorner(8, 8);
m_edgeRenderer = new EdgeRenderer(Constants.EDGE_TYPE_CURVE);
DefaultRendererFactory rf = new DefaultRendererFactory(m_nodeRenderer);
rf.add(new InGroupPredicate(treeEdges), m_edgeRenderer);
vis.setRendererFactory(rf);
// colors
ItemAction nodeColor = new NodeColorAction(treeNodes);
ItemAction textColor = new ColorAction(treeNodes,
VisualItem.TEXTCOLOR, ColorLib.rgb(0, 0, 0));
vis.putAction("textColor", textColor);
ItemAction edgeColor = new ColorAction(treeEdges,
VisualItem.STROKECOLOR, ColorLib.rgb(200, 200, 200));
// quick repaint
ActionList repaint = new ActionList();
repaint.add(nodeColor);
repaint.add(new RepaintAction());
vis.putAction("repaint", repaint);
// full paint
ActionList fullPaint = new ActionList();
fullPaint.add(nodeColor);
vis.putAction("fullPaint", fullPaint);
// animate paint change
ActionList animatePaint = new ActionList(400);
animatePaint.add(new ColorAnimator(treeNodes));
animatePaint.add(new RepaintAction());
vis.putAction("animatePaint", animatePaint);
// create the tree layout action
NodeLinkTreeLayout treeLayout = new NodeLinkTreeLayout(tree,
m_orientation, 50, 0, 8);
treeLayout.setLayoutAnchor(new Point2D.Double(25, 300));
vis.putAction("treeLayout", treeLayout);
CollapsedSubtreeLayout subLayout =
new CollapsedSubtreeLayout(tree, m_orientation);
vis.putAction("subLayout", subLayout);
AutoPanAction autoPan = new AutoPanAction();
// create the filtering and layout
ActionList filter = new ActionList();
filter.add(new FisheyeTreeFilter(tree, 4));
filter.add(new FontAction(treeNodes, FontLib.getFont("Tahoma", 16)));
filter.add(treeLayout);
filter.add(subLayout);
filter.add(textColor);
filter.add(nodeColor);
filter.add(edgeColor);
vis.putAction("filter", filter);
// animated transition
ActionList animate = new ActionList(1000);
animate.setPacingFunction(new SlowInSlowOutPacer());
animate.add(autoPan);
animate.add(new QualityControlAnimator());
animate.add(new VisibilityAnimator(tree));
animate.add(new LocationAnimator(treeNodes));
animate.add(new ColorAnimator(treeNodes));
animate.add(new RepaintAction());
vis.putAction("animate", animate);
vis.alwaysRunAfter("filter", "animate");
// create animator for orientation changes
ActionList orient = new ActionList(2000);
orient.setPacingFunction(new SlowInSlowOutPacer());
orient.add(autoPan);
orient.add(new QualityControlAnimator());
orient.add(new LocationAnimator(treeNodes));
orient.add(new RepaintAction());
vis.putAction("orient", orient);
// ------------------------------------------------
// initialize the display
setSize(700, 600);
setItemSorter(new TreeDepthItemSorter());
addControlListener(new ZoomToFitControl());
addControlListener(new ZoomControl());
addControlListener(new WheelZoomControl());
addControlListener(new PanControl());
addControlListener(new FocusControl(1, "filter"));
registerKeyboardAction(
new OrientAction(Constants.ORIENT_LEFT_RIGHT),
"left-to-right", KeyStroke.getKeyStroke("ctrl 1"), WHEN_FOCUSED);
registerKeyboardAction(
new OrientAction(Constants.ORIENT_TOP_BOTTOM),
"top-to-bottom", KeyStroke.getKeyStroke("ctrl 2"), WHEN_FOCUSED);
registerKeyboardAction(
new OrientAction(Constants.ORIENT_RIGHT_LEFT),
"right-to-left", KeyStroke.getKeyStroke("ctrl 3"), WHEN_FOCUSED);
registerKeyboardAction(
new OrientAction(Constants.ORIENT_BOTTOM_TOP),
"bottom-to-top", KeyStroke.getKeyStroke("ctrl 4"), WHEN_FOCUSED);
// ------------------------------------------------
// filter graph and perform layout
setOrientation(m_orientation);
vis.run("filter");
TupleSet search = new PrefixSearchTupleSet();
vis.addFocusGroup(Visualization.SEARCH_ITEMS, search);
search.addTupleSetListener(new TupleSetListener() {
@Override
public void tupleSetChanged(TupleSet t, prefuse.data.Tuple[] add, prefuse.data.Tuple[] rem) {
vis.cancel("animatePaint");
vis.run("fullPaint");
vis.run("animatePaint");
}
});
}
public JComponent getVisual(String filepath, String label) {
//set colors for background and foreground
Color BACKGROUND = Color.WHITE;
Color FOREGROUND = Color.BLACK;
//load a partial tree
xmlLoader = new TreeLoader();
xmlLoader.setMaxDepth(1);
prefuseTree = null;
try {
prefuseTree = (Tree) xmlLoader.readGraph(filepath);
} catch (DataIOException ex) {
Logger.getLogger(PrefuseTreeVisual.class.getName()).log(Level.SEVERE, null, ex);
}
final PrefuseTreeVisual tview = new PrefuseTreeVisual();
tview.init(prefuseTree, label);
tview.setBackground(BACKGROUND);
tview.setForeground(FOREGROUND);
//create a search panel
JSearchPanel search = new JSearchPanel(tview.getVisualization(), treeNodes, Visualization.SEARCH_ITEMS, m_label, true, true);
search.setShowResultCount(true);
search.setBorder(BorderFactory.createEmptyBorder(5, 5, 4, 0));
search.setFont(FontLib.getFont("Tahoma", Font.PLAIN, 11));
search.setBackground(BACKGROUND);
search.setForeground(FOREGROUND);
final JFastLabel title = new JFastLabel("Title");
title.setPreferredSize(new Dimension(350, 20));
title.setVerticalAlignment(SwingConstants.BOTTOM);
title.setBorder(BorderFactory.createEmptyBorder(3, 0, 0, 0));
title.setFont(FontLib.getFont("Tahoma", Font.PLAIN, 16));
title.setBackground(BACKGROUND);
title.setForeground(FOREGROUND);
tview.addControlListener(new ControlAdapter() {
@Override
public void itemEntered(VisualItem item, MouseEvent e) {
if (item.canGetString(m_label)) {
title.setText(item.getString(m_label));
}
if (item instanceof NodeItem) {
Display d = (Display)e.getSource();
ToolTipManager.sharedInstance().setInitialDelay(0);
String text = new String();
Node nodeData = (Node) item.getSourceTuple();
text+="<html>Type:" + nodeData.getString("type");
if (nodeData.getString("type").equals("level")) {
text+=("<br>Name: " + nodeData.getString("name"));
text+=("<br>Depth: " + nodeData.getString("depthInXMLTree"));
text+=("<br>Back to: " + nodeData.getString("backto"));
text+=("<br>Timestamp: " + nodeData.getString("timestamp")+"</html>");
} else if (nodeData.getString("type").equals("branch")) {
text+=("<br>Index: " + nodeData.getString("index"));
text+=("<br>Value: " + nodeData.getString("value"));
text+=("<br>Filtered values: " + nodeData.getString("value"));
text+=("<br>Timestamp: " + nodeData.getString("timestamp"));
text+=("<br>Has subtree: " + nodeData.getBoolean("hasSubtree")+"</html>");
}
if (nodeData.getString("type").equals("variable")) {
text+=("<br>Name: " + nodeData.getString("name"));
text+=("<br>Value: " + nodeData.getString("value"));
text+=("<br>Filtered values: " + nodeData.getString("filteredvalues"));
text+=("<br>Timestamp: " + nodeData.getString("timestamp")+"</html>");
} else if (nodeData.getString("type").equals("status")) {
text+=("<br>Result: " + nodeData.getString("result"));
text+=("<br>Timestamp: " + nodeData.getString("timestamp")+"</html>");
}
d.setToolTipText(text);
}
}
@Override
public void itemExited(VisualItem item, MouseEvent e) {
title.setText(null);
Display d = (Display)e.getSource();
d.setToolTipText(null);
}
@Override
public void itemClicked(VisualItem item, MouseEvent e) {
if(item instanceof NodeItem)
{
Node nodeData = (Node)item.getSourceTuple();
if(nodeData.getString("type").equals("level"))
{
if(prefuseTree.getRoot().getString("name").equals(nodeData.getString("name")))
{
//System.out.println("up level");
prefuseTree.removeChild(nodeData);
// xmlLoader.upLevel();
}
else
{
// System.out.println("down level");
prefuseTree.removeChild(nodeData);
//xmlLoader.downLevel(nodeData);
}
}else if(nodeData.getString("type").equals("branch"))
{
}else if(nodeData.getString("type").equals("variable"))
{
}else if(nodeData.getString("type").equals("status"))
{
}
}
}
});
Box box = new Box(BoxLayout.X_AXIS);
box.add(Box.createHorizontalStrut(10));
box.add(title);
box.add(Box.createHorizontalGlue());
box.add(search);
box.add(Box.createHorizontalStrut(3));
box.setBackground(BACKGROUND);
panel = new JPanel(new BorderLayout());
panel.setBackground(BACKGROUND);
panel.setForeground(FOREGROUND);
panel.add(tview, BorderLayout.CENTER);
panel.add(box, BorderLayout.SOUTH);
return panel;
}
public void setOrientation(int orientation) {
NodeLinkTreeLayout rtl = (NodeLinkTreeLayout) vis.getAction("treeLayout");
CollapsedSubtreeLayout stl = (CollapsedSubtreeLayout) vis.getAction("subLayout");
switch (orientation) {
case Constants.ORIENT_LEFT_RIGHT:
m_nodeRenderer.setHorizontalAlignment(Constants.LEFT);
m_edgeRenderer.setHorizontalAlignment1(Constants.RIGHT);
m_edgeRenderer.setHorizontalAlignment2(Constants.LEFT);
m_edgeRenderer.setVerticalAlignment1(Constants.CENTER);
m_edgeRenderer.setVerticalAlignment2(Constants.CENTER);
break;
case Constants.ORIENT_RIGHT_LEFT:
m_nodeRenderer.setHorizontalAlignment(Constants.RIGHT);
m_edgeRenderer.setHorizontalAlignment1(Constants.LEFT);
m_edgeRenderer.setHorizontalAlignment2(Constants.RIGHT);
m_edgeRenderer.setVerticalAlignment1(Constants.CENTER);
m_edgeRenderer.setVerticalAlignment2(Constants.CENTER);
break;
case Constants.ORIENT_TOP_BOTTOM:
m_nodeRenderer.setHorizontalAlignment(Constants.CENTER);
m_edgeRenderer.setHorizontalAlignment1(Constants.CENTER);
m_edgeRenderer.setHorizontalAlignment2(Constants.CENTER);
m_edgeRenderer.setVerticalAlignment1(Constants.BOTTOM);
m_edgeRenderer.setVerticalAlignment2(Constants.TOP);
break;
case Constants.ORIENT_BOTTOM_TOP:
m_nodeRenderer.setHorizontalAlignment(Constants.CENTER);
m_edgeRenderer.setHorizontalAlignment1(Constants.CENTER);
m_edgeRenderer.setHorizontalAlignment2(Constants.CENTER);
m_edgeRenderer.setVerticalAlignment1(Constants.TOP);
m_edgeRenderer.setVerticalAlignment2(Constants.BOTTOM);
break;
default:
throw new IllegalArgumentException(
"Unrecognized orientation value: " + orientation);
}
m_orientation = orientation;
rtl.setOrientation(orientation);
stl.setOrientation(orientation);
}
public int getOrientation() {
return m_orientation;
}
public class OrientAction extends AbstractAction {
private int orientation;
public OrientAction(int orientation) {
this.orientation = orientation;
}
@Override
public void actionPerformed(ActionEvent evt) {
setOrientation(orientation);
getVisualization().cancel("orient");
getVisualization().run("treeLayout");
getVisualization().run("orient");
}
}
public class AutoPanAction extends Action {
private Point2D m_start = new Point2D.Double();
private Point2D m_end = new Point2D.Double();
private Point2D m_cur = new Point2D.Double();
private int m_bias = 150;
@Override
public void run(double frac) {
TupleSet ts = vis.getFocusGroup(Visualization.FOCUS_ITEMS);
if (ts.getTupleCount() == 0) {
return;
}
if (frac == 0.0) {
int xbias = 0, ybias = 0;
switch (m_orientation) {
case Constants.ORIENT_LEFT_RIGHT:
xbias = m_bias;
break;
case Constants.ORIENT_RIGHT_LEFT:
xbias = -m_bias;
break;
case Constants.ORIENT_TOP_BOTTOM:
ybias = m_bias;
break;
case Constants.ORIENT_BOTTOM_TOP:
ybias = -m_bias;
break;
}
VisualItem vi = (VisualItem) ts.tuples().next();
m_cur.setLocation(getWidth() / 2, getHeight() / 2);
getAbsoluteCoordinate(m_cur, m_start);
m_end.setLocation(vi.getX() + xbias, vi.getY() + ybias);
} else {
m_cur.setLocation(m_start.getX() + frac * (m_end.getX() - m_start.getX()),
m_start.getY() + frac * (m_end.getY() - m_start.getY()));
panToAbs(m_cur);
}
}
}
public static class NodeColorAction extends ColorAction {
public NodeColorAction(String group) {
super(group, VisualItem.FILLCOLOR);
}
@Override
public int getColor(VisualItem item) {
if (vis.isInGroup(item, Visualization.SEARCH_ITEMS)) {
return ColorLib.rgb(255, 190, 190);
} else if (vis.isInGroup(item, Visualization.FOCUS_ITEMS)) {
return ColorLib.rgb(198, 229, 229);
} else if (item.getDOI() > -1) {
return ColorLib.rgb(164, 193, 193);
} else {
return ColorLib.rgba(255, 255, 255, 0);
}
}
} // end of inner class TreeMapColorAction
}
答案 0 :(得分：1)
您可以使用TreeWillExpandListener将节点子代的创建代码放在那里。
public void treeWillExpand(TreeExpansionEvent event)