public ProjectTreePanel( EntityCollection entityCollection, SymbolGraphic symbolGraphic, String panelName, KinDiagramPanel kinDiagramPanel, GraphPanel graphPanel, MessageDialogHandler dialogHandler, ArbilDataNodeLoader dataNodeLoader) { super(new BorderLayout()); this.setName(panelName); this.entityCollection = entityCollection; this.symbolGraphic = symbolGraphic; this.panelName = panelName; this.kinDiagramPanel = kinDiagramPanel; this.graphPanel = graphPanel; this.dataNodeLoader = dataNodeLoader; this.dialogHandler = dialogHandler; this.rootNode = new ProjectNode(entityCollection, panelName); kinTree = new KinTree(kinDiagramPanel, graphPanel, rootNode); kinTree.setBackground(this.getBackground()); this.add(new JScrollPane(kinTree), BorderLayout.CENTER); progressBar = new JProgressBar(); ActionListener actionListener = new ActionListener() { public void actionPerformed(ActionEvent e) { if ("<".equals(e.getActionCommand())) { currentPage--; } else if (">".equals(e.getActionCommand())) { currentPage++; } showPage(); } }; final JButton previousButton = new JButton("<"); final JButton nextButton = new JButton(">"); currentPageLabel = new JLabel("", JLabel.CENTER); previousButton.setActionCommand("<"); nextButton.setActionCommand(">"); previousButton.addActionListener(actionListener); nextButton.addActionListener(actionListener); final Dimension preferredSize = previousButton.getPreferredSize(); final Dimension buttonDimension = new Dimension(preferredSize.height, preferredSize.height); previousButton.setPreferredSize(buttonDimension); nextButton.setPreferredSize(buttonDimension); pagePanel = new JPanel(new BorderLayout()); pagePanel.add(previousButton, BorderLayout.LINE_START); pagePanel.add(currentPageLabel, BorderLayout.CENTER); pagePanel.add(nextButton, BorderLayout.LINE_END); }