Example usage for javax.swing JComboBox addItemListener

List of usage examples for javax.swing JComboBox addItemListener

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Introduction

In this page you can find the example usage for javax.swing JComboBox addItemListener.

Prototype

public void addItemListener(ItemListener aListener)

Source Link

Document

Adds an ItemListener.

Usage

From source file:Main.java

public static void main(final String args[]) {
    final String labels[] = { "A", "B", "C", "D", "E" };
    JFrame frame = new JFrame("Selecting JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JComboBox comboBox = new JComboBox(labels);
    frame.add(comboBox, BorderLayout.SOUTH);

    ItemListener itemListener = new ItemListener() {
        public void itemStateChanged(ItemEvent itemEvent) {
            int state = itemEvent.getStateChange();
            String stateString = ((state == ItemEvent.SELECTED) ? "Selected" : "Deselected");
            System.out.println("Item: " + itemEvent.getItem());
            System.out.println(", State: " + stateString);
            ItemSelectable is = itemEvent.getItemSelectable();
            System.out.println(", Selected: " + selectedString(is));
        }/*from  w  w w .  j a v a  2s .  c  om*/
    };
    comboBox.addItemListener(itemListener);
    frame.setSize(400, 200);
    frame.setVisible(true);

}

From source file:Main.java

public static void main(String[] args) {
    JPanel ui = new JPanel(new BorderLayout(4, 4));
    ui.setBorder(new EmptyBorder(6, 6, 6, 6));

    JPanel controls = new JPanel(new FlowLayout(FlowLayout.LEADING));
    ui.add(controls, BorderLayout.PAGE_START);
    int s = 100;//from   w  ww .j a  va 2s.  co  m
    Dimension[] sizes = { new Dimension(s * 4, s * 2), new Dimension(s * 6, s * 3),
            new Dimension(s * 8, s * 4) };
    final JComboBox cb = new JComboBox(sizes);
    controls.add(cb);
    final JPanel[] panels = new JPanel[sizes.length];
    for (int ii = 0; ii < sizes.length; ii++) {
        Dimension d = sizes[ii];
        BufferedImage bi = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_RGB);
        JPanel p = new JPanel(new GridLayout());
        JLabel l = new JLabel(new ImageIcon(bi));
        p.add(l);
        panels[ii] = p;
    }
    ItemListener sizeListener = new ItemListener() {

        JPanel current = panels[0];

        @Override
        public void itemStateChanged(ItemEvent e) {
            JPanel next = panels[cb.getSelectedIndex()];
            swapComponentsAndResizeUI(ui, current, next);
            current = next;
        }
    };
    cb.addItemListener(sizeListener);

    ui.add(panels[0], BorderLayout.CENTER);

    JFrame f = new JFrame("Three Sized Panels");
    f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    f.setContentPane(ui);
    f.pack();
    f.setLocationByPlatform(true);
    f.setVisible(true);
}

From source file:SelectingComboSample.java

public static void main(String args[]) {
    String labels[] = { "A", "B", "C", "D", "E", "F", "G", "H", "J", "I" };
    JFrame frame = new JFrame("Selecting JComboBox");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    JComboBox comboBox = new JComboBox(labels);
    contentPane.add(comboBox, BorderLayout.SOUTH);

    final JTextArea textArea = new JTextArea();
    textArea.setEditable(false);/*from   w ww . ja  va 2 s .c  o m*/
    JScrollPane sp = new JScrollPane(textArea);
    contentPane.add(sp, BorderLayout.CENTER);

    ItemListener itemListener = new ItemListener() {
        public void itemStateChanged(ItemEvent itemEvent) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            int state = itemEvent.getStateChange();
            String stateString = ((state == ItemEvent.SELECTED) ? "Selected" : "Deselected");
            pw.print("Item: " + itemEvent.getItem());
            pw.print(", State: " + stateString);
            ItemSelectable is = itemEvent.getItemSelectable();
            pw.print(", Selected: " + selectedString(is));
            pw.println();
            textArea.append(sw.toString());
        }
    };
    comboBox.addItemListener(itemListener);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            pw.print("Command: " + actionEvent.getActionCommand());
            ItemSelectable is = (ItemSelectable) actionEvent.getSource();
            pw.print(", Selected: " + selectedString(is));
            pw.println();
            textArea.append(sw.toString());
        }
    };
    comboBox.addActionListener(actionListener);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

From source file:Main.java

/**
 * remove all items silently/*from www  .  jav  a2s .  c o  m*/
 * @param aComboBox combo box
 * @param aListener listener
 */
public final static void RemoveAllItemsSilently(JComboBox aComboBox, ItemListener aListener) {
    aComboBox.removeItemListener(aListener);
    aComboBox.removeAllItems();
    aComboBox.addItemListener(aListener);
}

From source file:Main.java

/**
 * add item silently//  w  w w  .j  a v  a  2 s.co  m
 * @param aComboBox combo box
 * @param anObject object to be added
 * @param aListener listener
 */
public final static void AddItemSilently(JComboBox aComboBox, Object anObject, ItemListener aListener) {
    aComboBox.removeItemListener(aListener);
    aComboBox.addItem(anObject);
    aComboBox.addItemListener(aListener);
}

From source file:Main.java

/**
 * select index silently/*from   www .j  a  va2 s.  co  m*/
 * @param aComboBox combo box
 * @param anIndex index
 * @param aListener listener to be removed when selecting index
 */
public final static void SelectIndexSilently(JComboBox aComboBox, int anIndex, ItemListener aListener) {
    aComboBox.removeItemListener(aListener);
    aComboBox.setSelectedIndex(anIndex);
    aComboBox.addItemListener(aListener);
}

From source file:cimat.tesis.sna.visualization.ShowLayouts.java

private static JPanel getGraphPanel() {
    g_array = (Graph<? extends Object, ? extends Object>[]) new Graph<?, ?>[graph_names.length];

    Factory<Graph<Integer, Number>> graphFactory = new Factory<Graph<Integer, Number>>() {
        public Graph<Integer, Number> create() {
            return new SparseMultigraph<Integer, Number>();
        }//from   ww  w . ja v a 2 s  .c o  m
    };

    Factory<Integer> vertexFactory = new Factory<Integer>() {
        int count;

        public Integer create() {
            return count++;
        }
    };
    Factory<Number> edgeFactory = new Factory<Number>() {
        int count;

        public Number create() {
            return count++;
        }
    };

    g_array[0] = TestGraphs.createTestGraph(false);
    g_array[1] = MixedRandomGraphGenerator.generateMixedRandomGraph(graphFactory, vertexFactory, edgeFactory,
            new HashMap<Number, Number>(), 20, true, new HashSet<Integer>());
    g_array[2] = TestGraphs.getDemoGraph();
    g_array[3] = TestGraphs.createDirectedAcyclicGraph(4, 4, 0.3);
    g_array[4] = TestGraphs.getOneComponentGraph();
    g_array[5] = TestGraphs.createChainPlusIsolates(18, 5);
    g_array[6] = TestGraphs.createChainPlusIsolates(0, 20);

    Graph<? extends Object, ? extends Object> g = g_array[4]; // initial graph

    final VisualizationViewer<Integer, Number> vv = new VisualizationViewer<Integer, Number>(new FRLayout(g));

    vv.getRenderContext().setVertexFillPaintTransformer(
            new PickableVertexPaintTransformer<Integer>(vv.getPickedVertexState(), Color.red, Color.yellow));

    final DefaultModalGraphMouse<Integer, Number> graphMouse = new DefaultModalGraphMouse<Integer, Number>();
    vv.setGraphMouse(graphMouse);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });
    JButton reset = new JButton("reset");
    reset.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            Layout<Integer, Number> layout = vv.getGraphLayout();
            layout.initialize();
            Relaxer relaxer = vv.getModel().getRelaxer();
            if (relaxer != null) {
                //            if(layout instanceof IterativeContext) {
                relaxer.stop();
                relaxer.prerelax();
                relaxer.relax();
            }
        }
    });

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(((DefaultModalGraphMouse<Integer, Number>) vv.getGraphMouse()).getModeListener());

    JPanel jp = new JPanel();
    jp.setBackground(Color.WHITE);
    jp.setLayout(new BorderLayout());
    jp.add(vv, BorderLayout.CENTER);
    Class[] combos = getCombos();
    final JComboBox jcb = new JComboBox(combos);
    // use a renderer to shorten the layout name presentation
    jcb.setRenderer(new DefaultListCellRenderer() {
        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
                boolean cellHasFocus) {
            String valueString = value.toString();
            valueString = valueString.substring(valueString.lastIndexOf('.') + 1);
            return super.getListCellRendererComponent(list, valueString, index, isSelected, cellHasFocus);
        }
    });
    jcb.addActionListener(new LayoutChooser(jcb, vv));
    jcb.setSelectedItem(FRLayout.class);

    JPanel control_panel = new JPanel(new GridLayout(2, 1));
    JPanel topControls = new JPanel();
    JPanel bottomControls = new JPanel();
    control_panel.add(topControls);
    control_panel.add(bottomControls);
    jp.add(control_panel, BorderLayout.NORTH);

    final JComboBox graph_chooser = new JComboBox(graph_names);

    graph_chooser.addActionListener(new GraphChooser(jcb));

    topControls.add(jcb);
    topControls.add(graph_chooser);
    bottomControls.add(plus);
    bottomControls.add(minus);
    bottomControls.add(modeBox);
    bottomControls.add(reset);
    return jp;
}

From source file:edu.uci.ics.jung.samples.ShowLayouts.java

@SuppressWarnings({ "rawtypes", "unchecked" })
private static JPanel getGraphPanel() {
    g_array = (Graph<? extends Object, ? extends Object>[]) new Graph<?, ?>[graph_names.length];

    Factory<Graph<Integer, Number>> graphFactory = new Factory<Graph<Integer, Number>>() {
        public Graph<Integer, Number> create() {
            return new SparseMultigraph<Integer, Number>();
        }//from  www  .ja v  a  2s .com
    };

    Factory<Integer> vertexFactory = new Factory<Integer>() {
        int count;

        public Integer create() {
            return count++;
        }
    };
    Factory<Number> edgeFactory = new Factory<Number>() {
        int count;

        public Number create() {
            return count++;
        }
    };

    g_array[0] = TestGraphs.createTestGraph(false);
    g_array[1] = MixedRandomGraphGenerator.generateMixedRandomGraph(graphFactory, vertexFactory, edgeFactory,
            new HashMap<Number, Number>(), 20, true, new HashSet<Integer>());
    g_array[2] = TestGraphs.getDemoGraph();
    g_array[3] = TestGraphs.createDirectedAcyclicGraph(4, 4, 0.3);
    g_array[4] = TestGraphs.getOneComponentGraph();
    g_array[5] = TestGraphs.createChainPlusIsolates(18, 5);
    g_array[6] = TestGraphs.createChainPlusIsolates(0, 20);

    Graph<? extends Object, ? extends Object> g = g_array[4]; // initial graph

    final VisualizationViewer<Integer, Number> vv = new VisualizationViewer<Integer, Number>(new FRLayout(g));

    vv.getRenderContext().setVertexFillPaintTransformer(
            new PickableVertexPaintTransformer<Integer>(vv.getPickedVertexState(), Color.red, Color.yellow));

    final DefaultModalGraphMouse<Integer, Number> graphMouse = new DefaultModalGraphMouse<Integer, Number>();
    vv.setGraphMouse(graphMouse);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });
    JButton reset = new JButton("reset");
    reset.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            Layout<Integer, Number> layout = vv.getGraphLayout();
            layout.initialize();
            Relaxer relaxer = vv.getModel().getRelaxer();
            if (relaxer != null) {
                //            if(layout instanceof IterativeContext) {
                relaxer.stop();
                relaxer.prerelax();
                relaxer.relax();
            }
        }
    });

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(((DefaultModalGraphMouse<Integer, Number>) vv.getGraphMouse()).getModeListener());

    JPanel jp = new JPanel();
    jp.setBackground(Color.WHITE);
    jp.setLayout(new BorderLayout());
    jp.add(vv, BorderLayout.CENTER);
    Class[] combos = getCombos();
    final JComboBox jcb = new JComboBox(combos);
    // use a renderer to shorten the layout name presentation
    jcb.setRenderer(new DefaultListCellRenderer() {
        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
                boolean cellHasFocus) {
            String valueString = value.toString();
            valueString = valueString.substring(valueString.lastIndexOf('.') + 1);
            return super.getListCellRendererComponent(list, valueString, index, isSelected, cellHasFocus);
        }
    });
    jcb.addActionListener(new LayoutChooser(jcb, vv));
    jcb.setSelectedItem(FRLayout.class);

    JPanel control_panel = new JPanel(new GridLayout(2, 1));
    JPanel topControls = new JPanel();
    JPanel bottomControls = new JPanel();
    control_panel.add(topControls);
    control_panel.add(bottomControls);
    jp.add(control_panel, BorderLayout.NORTH);

    final JComboBox graph_chooser = new JComboBox(graph_names);

    graph_chooser.addActionListener(new GraphChooser(jcb));

    topControls.add(jcb);
    topControls.add(graph_chooser);
    bottomControls.add(plus);
    bottomControls.add(minus);
    bottomControls.add(modeBox);
    bottomControls.add(reset);
    return jp;
}

From source file:bigdata.explorer.nutch.grapview.ShowLayouts.java

private static JPanel getGraphPanel() throws IOException {
    g_array = (Graph<? extends Object, ? extends Object>[]) new Graph<?, ?>[graph_names.length];

    Factory<Graph<Integer, Number>> graphFactory = new Factory<Graph<Integer, Number>>() {
        public Graph<Integer, Number> create() {
            return new SparseMultigraph<Integer, Number>();
        }//from w  w  w .j a  va2  s.  co  m
    };

    Factory<Integer> vertexFactory = new Factory<Integer>() {
        int count;

        public Integer create() {
            return count++;
        }
    };
    Factory<Number> edgeFactory = new Factory<Number>() {
        int count;

        public Number create() {
            return count++;
        }
    };

    g_array[0] = TestGraphs.createTestGraph(false);
    g_array[1] = MixedRandomGraphGenerator.generateMixedRandomGraph(graphFactory, vertexFactory, edgeFactory,
            new HashMap<Number, Number>(), 20, true, new HashSet<Integer>());
    g_array[2] = TestGraphs.getDemoGraph();
    g_array[3] = TestGraphs.createDirectedAcyclicGraph(4, 4, 0.3);
    g_array[4] = TestGraphs.getOneComponentGraph();
    g_array[5] = TestGraphs.createChainPlusIsolates(18, 5);
    g_array[6] = TestGraphs.createChainPlusIsolates(0, 20);

    g_array[7] = NutchGraphLoader.loadFullGraph("/home/kamir/ANALYSIS/Nutch/YellowMED_CORE");

    Graph<? extends Object, ? extends Object> g = g_array[4]; // initial graph

    final VisualizationViewer<Integer, Number> vv = new VisualizationViewer<Integer, Number>(new FRLayout(g));

    vv.getRenderContext().setVertexFillPaintTransformer(
            new PickableVertexPaintTransformer<Integer>(vv.getPickedVertexState(), Color.red, Color.yellow));

    final DefaultModalGraphMouse<Integer, Number> graphMouse = new DefaultModalGraphMouse<Integer, Number>();
    vv.setGraphMouse(graphMouse);

    final ScalingControl scaler = new CrossoverScalingControl();

    JButton plus = new JButton("+");
    plus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1.1f, vv.getCenter());
        }
    });
    JButton minus = new JButton("-");
    minus.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            scaler.scale(vv, 1 / 1.1f, vv.getCenter());
        }
    });
    JButton reset = new JButton("reset");
    reset.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            Layout<Integer, Number> layout = vv.getGraphLayout();
            layout.initialize();
            Relaxer relaxer = vv.getModel().getRelaxer();
            if (relaxer != null) {
                //            if(layout instanceof IterativeContext) {
                relaxer.stop();
                relaxer.prerelax();
                relaxer.relax();
            }
        }
    });

    JComboBox modeBox = graphMouse.getModeComboBox();
    modeBox.addItemListener(((DefaultModalGraphMouse<Integer, Number>) vv.getGraphMouse()).getModeListener());

    JPanel jp = new JPanel();
    jp.setBackground(Color.WHITE);
    jp.setLayout(new BorderLayout());
    jp.add(vv, BorderLayout.CENTER);
    Class[] combos = getCombos();
    final JComboBox jcb = new JComboBox(combos);
    // use a renderer to shorten the layout name presentation
    jcb.setRenderer(new DefaultListCellRenderer() {
        public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
                boolean cellHasFocus) {
            String valueString = value.toString();
            valueString = valueString.substring(valueString.lastIndexOf('.') + 1);
            return super.getListCellRendererComponent(list, valueString, index, isSelected, cellHasFocus);
        }
    });
    jcb.addActionListener(new LayoutChooser(jcb, vv));
    jcb.setSelectedItem(FRLayout.class);

    JPanel control_panel = new JPanel(new GridLayout(2, 1));
    JPanel topControls = new JPanel();
    JPanel bottomControls = new JPanel();
    control_panel.add(topControls);
    control_panel.add(bottomControls);
    jp.add(control_panel, BorderLayout.NORTH);

    final JComboBox graph_chooser = new JComboBox(graph_names);

    graph_chooser.addActionListener(new GraphChooser(jcb));

    topControls.add(jcb);
    topControls.add(graph_chooser);
    bottomControls.add(plus);
    bottomControls.add(minus);
    bottomControls.add(modeBox);
    bottomControls.add(reset);
    return jp;
}

From source file:Main.java

public Main() {
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);

    String[] sList = new String[] { "Spring", "Summer", "Fall", "Winter" };
    JComboBox<String> seasons = new JComboBox<>(sList);

    seasons.addItemListener((ItemEvent e) -> {
        Object item = e.getItem();
        if (e.getStateChange() == ItemEvent.SELECTED) {
            // Item has been selected
            System.out.println(item + "  has  been  selected");
        } else if (e.getStateChange() == ItemEvent.DESELECTED) {
            // Item has been deselected
            System.out.println(item + "  has  been  deselected");
        }/*from   ww w .  ja v a 2 s  . co m*/
    });

    Container contentPane = this.getContentPane();
    contentPane.add(seasons, BorderLayout.CENTER);
}