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POJava swing -- Jpanel not rerendering/repainting itself
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  1. POJava swing -- Jpanel not rerendering/repainting itself
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    copied!<p>Im using a JPanel with propertyChangeListener and want it to rerender itself based on whenever a particular variable <code>model</code> changes. My code for the same is as follows --<br></p> <pre><code>public class LabelMacroEditor extends JPanel implements PropertyChangeListener { private static final long serialVersionUID = 1L; private LabelMacroModel model; public LabelMacroEditor(LabelMacroModel bean) { this.model = bean; model.addPropertyChangeListener(this); setupComponents(); validate(); setVisible(true); } public void setupComponents() { Box allButtons = Box.createVerticalBox(); JScrollPane macroModelScroller = new JScrollPane(allButtons); macroModelScroller.setPreferredSize(new Dimension(300, 200)); for(MacroModel macroModel : model.getMacroModelList()) { LabelMacroEditorEditableEntity macroEditorEntity = new LabelMacroEditorEditableEntity(macroModel); Box entityBox = Box.createHorizontalBox(); entityBox.add(macroEditorEntity.getUpButton()); entityBox.add(Box.createHorizontalStrut(15)); entityBox.add(macroEditorEntity.getMacroDetailsButton()); entityBox.add(Box.createHorizontalStrut(15)); entityBox.add(macroEditorEntity.getDownButton()); allButtons.add(entityBox); } add(macroModelScroller); } @Override public void propertyChange(PropertyChangeEvent arg0) { revalidate(); repaint(); } } </code></pre> <p>When i use the debug mode in eclipse i can see that whenever there is a change to <code>model</code> it triggers off the call <code>propertyChange</code> and it also runs over <code>revalidate</code> and <code>repaint</code> but only the <code>JPanel</code> display remains the same. It does not seem to be rerendering itself. Anything fundamental that I'm missing here ?</p> <p>EDIT :</p> <p>An example snippet of a property im changing is as follows --</p> <pre><code>labelMacroModel.addMacroModel(addedMacroModel); </code></pre> <p>where <code>labelMacroModel</code> is of the type <code>LabelMacroModel</code> and <code>addedMacroModel</code> is of the type <code>Macro</code></p> <p>Now the relevant part of <code>LabelMacroModel</code> class that fires off the property change is as follows --</p> <pre><code>private List&lt;MacroModel&gt; macroModelList;// this is the list of all MacroModels public void addMacroModel(MacroModel macroModel) { macroModelList.add(macroModel); pcs.fireIndexedPropertyChange("LabelMacroModel", macroModelList.size(), null, macroModel); } </code></pre>
 

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