Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <blockquote> <p>An <em>explanation</em> of why is this happening would be great.</p> </blockquote> <p>You may get some insight from the variation below. Note</p> <ul> <li><p>Swing GUI objects should be constructed and manipulated <em>only</em> on the <a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/initial.html" rel="nofollow noreferrer">event dispatch thread</a> (EDT) for the reason suggested <a href="https://stackoverflow.com/a/13411868/230513">here</a>.</p></li> <li><p>The EDT continues to process events, as shown in the example, even while user interaction is limited to the modal dialog.</p></li> <li><p>Invoking <code>repaint()</code> should <em>not</em> be required when using <code>ChartPanel</code>.</p></li> <li><p>Prefer <a href="https://stackoverflow.com/a/5655843/230513"><code>CardLayout</code></a> or <a href="https://stackoverflow.com/a/11949899/230513"><code>JTabbedPane</code></a> over manual container manipulation.</p></li> <li><p>Rather than invoking <code>setPreferredSize()</code>, override <code>getPreferredSize()</code>, as discussed <a href="https://stackoverflow.com/q/7229226/230513">here</a>.</p></li> </ul> <p>Addendum: <em>You have removed the two lines … that are showing the problem.</em></p> <p><code>ChartRenderingInfo</code> is dynamic data that doesn't exist until the chart has been rendered. The modal dialog handles events while the chart is updated in the background; without it, you can schedule your method by wrapping it in a <code>Runnable</code> suitable for <code>invokeLater()</code>:</p> <pre><code>EventQueue.invokeLater(new Runnable() { @Override public void run() { myPanel.methodCalledOnceDisplayed(); } }); </code></pre> <p>A better scheme is to access the <code>ChartRenderingInfo</code> in listeners where you <em>know</em> the data is valid, i.e. listeners implemented by <code>ChartPanel</code>.</p> <p><img src="https://i.stack.imgur.com/AiLI7.png" alt="image"></p> <pre><code>import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Date; import java.util.Random; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.Timer; import javax.swing.border.EmptyBorder; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.CombinedDomainXYPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.PlotRenderingInfo; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.time.Day; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; /** * @see https://stackoverflow.com/a/14894894/230513 */ public class Test extends JFrame { private JPanel panel; public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Test frame = new Test(); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public Test() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final MyJPanel myPanel = new MyJPanel(); panel = new JPanel() { @Override public Dimension getPreferredSize() { return myPanel.getPreferredSize(); } }; panel.setBorder(new EmptyBorder(5, 5, 5, 5)); panel.setLayout(new BorderLayout()); add(panel); myPanel.start(); JButton clickme = new JButton("Click me"); clickme.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { panel.removeAll(); panel.add(myPanel, BorderLayout.CENTER); validate(); EventQueue.invokeLater(new Runnable() { @Override public void run() { myPanel.methodCalledOnceDisplayed(); } }); } }); panel.add(clickme, BorderLayout.NORTH); JPanel example = new JPanel(); example.add(new JLabel("Example JPanel")); panel.add(example, BorderLayout.CENTER); } private static class MyJPanel extends JPanel { private static final Random r = new Random(); private ChartPanel chartPanel; private JFreeChart chart; private XYPlot subplotTop; private XYPlot subplotBottom; private CombinedDomainXYPlot plot; private Timer timer; private Day now = new Day(new Date()); public MyJPanel() { this.add(new JLabel("Chart panel")); createCombinedChart(); chartPanel = new ChartPanel(chart); this.add(chartPanel); timer = new Timer(1000, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { update(subplotTop); update(subplotBottom); } }); timer.start(); } public void start() { timer.start(); } private void update(XYPlot plot) { TimeSeriesCollection t = (TimeSeriesCollection) plot.getDataset(); for (int i = 0; i &lt; t.getSeriesCount(); i++) { TimeSeries s = t.getSeries(i); s.add(now, Math.abs(r.nextGaussian())); now = (Day) now.next(); } } private void createCombinedChart() { plot = new CombinedDomainXYPlot(); plot.setGap(30); createSubplots(); plot.add(subplotTop, 4); plot.add(subplotBottom, 1); plot.setOrientation(PlotOrientation.VERTICAL); chart = new JFreeChart("Title", JFreeChart.DEFAULT_TITLE_FONT, plot, true); plot.setDomainAxis(new DateAxis("Domain")); } private void createSubplots() { subplotTop = new XYPlot(); subplotBottom = new XYPlot(); subplotTop.setDataset(emptyDataset("Set 1")); subplotTop.setRenderer(new XYLineAndShapeRenderer()); subplotTop.setRangeAxis(new NumberAxis("Range")); subplotBottom.setDataset(emptyDataset("Set 2")); subplotBottom.setRenderer(new XYLineAndShapeRenderer()); subplotBottom.setRangeAxis(new NumberAxis("Range")); } private XYDataset emptyDataset(String title) { TimeSeriesCollection tsc = new TimeSeriesCollection(); TimeSeries ts = new TimeSeries(title); tsc.addSeries(ts); return tsc; } public void methodCalledOnceDisplayed() { PlotRenderingInfo plotInfo = this.chartPanel.getChartRenderingInfo().getPlotInfo(); for (int i = 0; i &lt; plotInfo.getSubplotCount(); i++) { System.out.println(plotInfo.getSubplotInfo(i).getDataArea()); } JOptionPane.showMessageDialog(null, "Magic!"); } } } </code></pre> <p>Addendum: One additional iteration to illustrate <code>ChartMouseListener</code> and clean up a few loose ends.</p> <pre><code>import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Date; import java.util.Random; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.Timer; import org.jfree.chart.ChartMouseEvent; import org.jfree.chart.ChartMouseListener; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.entity.ChartEntity; import org.jfree.chart.plot.CombinedDomainXYPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.time.Day; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; /** * @see https://stackoverflow.com/a/14894894/230513 */ public class Test { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Test t = new Test(); } }); } public Test() { JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final MyJPanel myPanel = new MyJPanel(); f.add(myPanel, BorderLayout.CENTER); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); myPanel.start(); } private static class MyJPanel extends JPanel { private static final Random r = new Random(); private ChartPanel chartPanel; private JFreeChart chart; private XYPlot subplotTop; private XYPlot subplotBottom; private CombinedDomainXYPlot plot; private Timer timer; private Day now = new Day(new Date()); public MyJPanel() { createCombinedChart(); chartPanel = new ChartPanel(chart); this.add(chartPanel); timer = new Timer(1000, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { update(subplotTop); update(subplotBottom); now = (Day) now.next(); } }); chartPanel.addChartMouseListener(new ChartMouseListener() { @Override public void chartMouseClicked(ChartMouseEvent e) { final ChartEntity entity = e.getEntity(); System.out.println(entity + " " + entity.getArea()); } @Override public void chartMouseMoved(ChartMouseEvent e) { } }); } public void start() { timer.start(); } private void update(XYPlot plot) { TimeSeriesCollection t = (TimeSeriesCollection) plot.getDataset(); for (int i = 0; i &lt; t.getSeriesCount(); i++) { TimeSeries s = t.getSeries(i); s.add(now, Math.abs(r.nextGaussian())); } } private void createCombinedChart() { plot = new CombinedDomainXYPlot(); createSubplots(); plot.add(subplotTop, 4); plot.add(subplotBottom, 1); plot.setOrientation(PlotOrientation.VERTICAL); chart = new JFreeChart("Title", JFreeChart.DEFAULT_TITLE_FONT, plot, true); plot.setDomainAxis(new DateAxis("Domain")); } private void createSubplots() { subplotTop = new XYPlot(); subplotBottom = new XYPlot(); subplotTop.setDataset(emptyDataset("Set 1")); subplotTop.setRenderer(new XYLineAndShapeRenderer()); subplotTop.setRangeAxis(new NumberAxis("Range")); subplotBottom.setDataset(emptyDataset("Set 2")); subplotBottom.setRenderer(new XYLineAndShapeRenderer()); subplotBottom.setRangeAxis(new NumberAxis("Range")); } private XYDataset emptyDataset(String title) { TimeSeriesCollection tsc = new TimeSeriesCollection(); TimeSeries ts = new TimeSeries(title); tsc.addSeries(ts); return tsc; } } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POJPanel added but not displayed "in time"
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. UStrashgod
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POJPanel added but not displayed "in time"
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThanks for the explanation, but you have removed the two lines `chartPanel.getChartRenderingInfo().....;` that are showing the problem. I need those lines, as they give me two rectangles that I use to calculate the coordinates of the mouse relative to the plot. The question is why those lines work when the JOptionPane is shown, and not if the JOptionPane is removed?
      singulars
      1. PO
      1. USSalvatorelab
    2. CO_You have removed the two lines … that are showing the problem._ It's a gift! :-) More above.
      singulars
      1. PO
      1. UStrashgod
    3. COThose screens bring tears to my eyes oh the beauty :) +1
      singulars
      1. PO
      1. USDavid Kroukamp
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload