Hi Eugene!
Thanks, again.
Unfortunately, this doesn't solve the problem.
I also wonder how this relates to 'chartClicked' events.
I can't obtain them as well but in contrast to 'chartEntityClicked' no
coordinates should be required.
In any case I would be very thankful for any further advice.
Just for the record: There exists currently no working version of the
jfreechart-extension?
It has to be adapted by me?
Kind regards
Kevin Hirschmann
Hi,
Replace UIChartEntity with this code (there is a difference in handling
coordinates in newer jfreechart libraries)
public class UIChartEntity extends UIProxy {
private Shape fArea;
private String fToolTipText;
private String CONST_RECT = "rect" ;
private String CONST_POLY = "poly" ;
public UIChartEntity() {
super();
}
public Shape getArea() {
return fArea;
}
public String getToolTipText() {
return fToolTipText;
}
public void setChartEntity(HashMap map) {
fToolTipText = (String) map.get("toolTipText");
setArea(map);
}
private void setArea(Map map) {
int[] xCoords = (int[]) map.get("xCoords");
int[] yCoords = (int[]) map.get("yCoords");
String entityShape = map.get("shapeType").toString();
if (entityShape.equals(CONST_RECT)) {
int width = xCoords[1] - xCoords[0];
int height = yCoords[1] - yCoords[0];
fArea = new Rectangle2D.Double(xCoords[0], yCoords[0], width,
height);
} else if (entityShape.equals(CONST_POLY)) {
int nPoints = xCoords.length;
fArea = new Polygon(xCoords, yCoords, nPoints);
}
}
}
Hope it helps.
Thanks,
Eugene
Kevin Hirschmann wrote:
> Hi Eugene!
>
> Thanks for your help!
> Unfortunately, this solves only part of the problem:
> Of course, there is no nullpointer exception now.
> But still I don't get the event.
> The root cause seems to be that the chart entities (which are there) are
not
> retrieved.
>
> I really need to get these events. Exist there any update version? I am
> really
> Wondering because the example on the community page works.
>
> I'm using: jcommon-1.0.12.jar, jfreechart-1.0.9.jar,
> jfreechart-extension-client-1.0.jar, jfreechart-extension-server-1.0.jar
>
> Thanks and kind regards,
> Kevin Hirschmann
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: Kevin Hirschmann [mailto:[email protected]]
> Gesendet: Donnerstag, 12. März 2009 09:22
> An: Bernhard Schüler
> Betreff: WG: [ULC-developer] Nullpointer in JFreechart Extension
>
>
> Hi Kevin ,
>
> Replace the following in UIJFreeChart
>
> private UIChartEntity findEntity(int x, int y) {
> UIChartEntity result = null;
>
> for (Iterator iter = fChartEntities.iterator(); iter.hasNext();) {
> UIChartEntity entity = (UIChartEntity) iter.next();
> if (entity.getArea()!=null){
> if (entity.getArea().contains(x, y)) {
> result = entity;
> }
> }
> }
> return result;
> }
>
> Regards,
> Eugene
>
> Kevin Hirschmann wrote:
>
>> Hi!
>>
>> I encountered a problem using JFreeChart Extension II along with
>> JFreeChart 1.0.9 (and the same for JFreeChart 1.0.0).
>>
>> More precisely: jcommon-1.0.12.jar, jfreechart-1.0.9.jar,
>> jfreechart-extension-client-1.0.jar, jfreechart-extension-server-1.0.jar
>>
>> There is a nullpointer exception when a mouse event occurs and an
>> IChartEventListener has been registered.
>>
>> This appears to be the same problem which has previously been posted
>> on [ULC-developer]
>>
>> (by Eugene Coelho, Wed, 19 Jul 2006 01:20:54 -0700).
>>
>> Unfortunately, no answer has been posted.
>>
>> To produce this error I added an ULCJFreeChart to the template created by
>>
>> New ULC Project Wizard > Simple dialog ULC application template in
>> Eclipse.
>>
>> Please see below for the code and the stack trace.
>>
>> Thanks and kind regards,
>>
>> Kevin Hirschmann
>>
>> Exception in thread "AWT-EventQueue-1" java.lang.NullPointerException
>>
>> at
>>
>>
>
com.canoo.ulc.community.jfreechart.client.UIJFreeChart$MouseEventHandler.fin
> dEntity(UIJFreeChart.java:184)
>
>> at
>>
>>
>
com.canoo.ulc.community.jfreechart.client.UIJFreeChart$MouseEventHandler.mou
> seClicked(UIJFreeChart.java:162)
>
>> at
java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:212)
>>
>> at java.awt.Component.processMouseEvent(Component.java:5520)
>>
>> at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
>>
>> at
>>
>>
>
com.ulcjava.base.client.UILabel$BasicLabel.processMouseEvent(UILabel.java:38
> )
>
>> at java.awt.Component.processEvent(Component.java:5282)
>>
>> at java.awt.Container.processEvent(Container.java:1966)
>>
>> at java.awt.Component.dispatchEventImpl(Component.java:3984)
>>
>> at java.awt.Container.dispatchEventImpl(Container.java:2024)
>>
>> at java.awt.Component.dispatchEvent(Component.java:3819)
>>
>> at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
>>
>> at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3901)
>>
>> at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
>>
>> at java.awt.Container.dispatchEventImpl(Container.java:2010)
>>
>> at java.awt.Window.dispatchEventImpl(Window.java:1791)
>>
>> at java.awt.Component.dispatchEvent(Component.java:3819)
>>
>> at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
>>
>> at
>>
>>
>
com.ulcjava.base.client.FilteringEventQueue.dispatchEvent(FilteringEventQueu
> e.java:61)
>
>> at
>>
>>
>
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.ja
> va:242)
>
>> at
>>
>>
>
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java
> :163)
>
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
>>
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
>>
>> at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
>>
>> public class TestChartEventsBoxPane extends ULCBoxPane {
>>
>> // The structure of the class enables its visualization with ULC
>> Visual Editor Plugin
>>
>> private ULCButton ulcButton = null;
>>
>> private ULCLabel ulcLabel = null;
>>
>> private ULCJFreeChart chartComponent = null;
>>
>> public TestChartEventsBoxPane() {
>>
>> initialize();
>>
>> }
>>
>> private void initialize() {
>>
>> setHorizontalGap(5);
>>
>> set(0, 1, 1, 1, com.ulcjava.base.shared.IDefaults.BOX_CENTER_CENTER,
>> getUlcButton());
>>
>> set(0, 0, 1, 1, com.ulcjava.base.shared.IDefaults.BOX_CENTER_CENTER,
>> getUlcLabel());
>>
>> set(2, 2, 1, 1, com.ulcjava.base.shared.IDefaults.BOX_CENTER_CENTER,
>> getULCJFreeChart());
>>
>> }
>>
>> private ULCButton getUlcButton() {
>>
>> if (ulcButton == null) {
>>
>> ulcButton = new ULCButton();
>>
>> ulcButton.setText("Say Hello");
>>
>> ulcButton.addActionListener(new IActionListener() {
>>
>> public void actionPerformed(ActionEvent e) {
>>
>> new ULCAlert("Title","Hello!","OK").show();
>>
>> }
>>
>> });
>>
>> }
>>
>> return ulcButton;
>>
>> }
>>
>> private ULCLabel getUlcLabel() {
>>
>> if (ulcLabel == null) {
>>
>> ulcLabel = new ULCLabel();
>>
>> ulcLabel.setText("Click button for greeting");
>>
>> }
>>
>> return ulcLabel;
>>
>> }
>>
>> private ULCJFreeChart getULCJFreeChart() {
>>
>> if (this.chartComponent == null) {
>>
>> this.chartComponent = new ULCJFreeChart();
>>
>> double[][] data = new double[][] { { 4257, 4058, 3357 }, { 257, 58,
>> 357 } };
>>
>> CategoryDataset dataset = DatasetUtilities.createCategoryDataset(
>>
>> new String[] { "prognose", "real" },
>>
>> new String[] { "02.09.2008", "03.09.2008", "04.09.2008" },
>>
>> data);
>>
>> JFreeChart chart1 = ChartFactory.createBarChart("TEST", "", "",
>> dataset, PlotOrientation.VERTICAL, false,
>>
>> false, false);
>>
>> this.chartComponent.setChart(chart1, new Dimension(600, 400));
>>
>> this.chartComponent.addChartComponentListener(new
>> IChartComponentListener() {
>>
>> public void chartResized(UlcChartComponentEvent event) {
>>
>> System.out.println("chartResized: latest chart size: " +
>> event.getChartComponentSize());
>>
>> }
>>
>> });
>>
>> this.chartComponent.addChartEventListener(new IChartEventListener() {
>>
>> public void chartClicked(UlcChartEvent event) {
>>
>> System.out.println("chart clicked");
>>
>> }
>>
>> public void chartEntityClicked(UlcChartEvent event) {
>>
>> ChartEntity entity = event.getChartEntity();
>>
>> System.out.println("entity coordinates: " + entity.getShapeCoords());
>>
>> }
>>
>> public void chartZoomed(UlcChartEvent arg0) {
>>
>> ;
>>
>> }
>>
>> });
>>
>> }
>>
>> return chartComponent;
>>
>> }
>>
>> }
>>
>> HUEBINET Informationsmanagement GmbH & Co. KG
>>
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>>
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>>
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>>
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>>
>> HUEBINET GmbH;
>>
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>>
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>>
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>>
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>
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