Java tutorial
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package components; /* * A 1.4 example that uses the following files: * GenealogyModel.java * Person.java * * Based on an example provided by tutorial reader Olivier Berlanger. */ import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.JScrollPane; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class GenealogyExample extends JPanel implements ActionListener { GenealogyTree tree; private static String SHOW_ANCESTOR_CMD = "showAncestor"; public GenealogyExample() { super(new BorderLayout()); //Construct the panel with the toggle buttons. JRadioButton showDescendant = new JRadioButton("Show descendants", true); final JRadioButton showAncestor = new JRadioButton("Show ancestors"); ButtonGroup bGroup = new ButtonGroup(); bGroup.add(showDescendant); bGroup.add(showAncestor); showDescendant.addActionListener(this); showAncestor.addActionListener(this); showAncestor.setActionCommand(SHOW_ANCESTOR_CMD); JPanel buttonPanel = new JPanel(); buttonPanel.add(showDescendant); buttonPanel.add(showAncestor); //Construct the tree. tree = new GenealogyTree(getGenealogyGraph()); JScrollPane scrollPane = new JScrollPane(tree); scrollPane.setPreferredSize(new Dimension(200, 200)); //Add everything to this panel. add(buttonPanel, BorderLayout.PAGE_START); add(scrollPane, BorderLayout.CENTER); } /** * Required by the ActionListener interface. * Handle events on the showDescendant and * showAncestore buttons. */ public void actionPerformed(ActionEvent ae) { if (ae.getActionCommand() == SHOW_ANCESTOR_CMD) { tree.showAncestor(true); } else { tree.showAncestor(false); } } /** * Constructs the genealogy graph used by the model. */ public Person getGenealogyGraph() { //the greatgrandparent generation Person a1 = new Person("Jack (great-granddaddy)"); Person a2 = new Person("Jean (great-granny)"); Person a3 = new Person("Albert (great-granddaddy)"); Person a4 = new Person("Rae (great-granny)"); Person a5 = new Person("Paul (great-granddaddy)"); Person a6 = new Person("Josie (great-granny)"); //the grandparent generation Person b1 = new Person("Peter (grandpa)"); Person b2 = new Person("Zoe (grandma)"); Person b3 = new Person("Simon (grandpa)"); Person b4 = new Person("James (grandpa)"); Person b5 = new Person("Bertha (grandma)"); Person b6 = new Person("Veronica (grandma)"); Person b7 = new Person("Anne (grandma)"); Person b8 = new Person("Renee (grandma)"); Person b9 = new Person("Joseph (grandpa)"); //the parent generation Person c1 = new Person("Isabelle (mom)"); Person c2 = new Person("Frank (dad)"); Person c3 = new Person("Louis (dad)"); Person c4 = new Person("Laurence (dad)"); Person c5 = new Person("Valerie (mom)"); Person c6 = new Person("Marie (mom)"); Person c7 = new Person("Helen (mom)"); Person c8 = new Person("Mark (dad)"); Person c9 = new Person("Oliver (dad)"); //the youngest generation Person d1 = new Person("Clement (boy)"); Person d2 = new Person("Colin (boy)"); Person.linkFamily(a1, a2, new Person[] { b1, b2, b3, b4 }); Person.linkFamily(a3, a4, new Person[] { b5, b6, b7 }); Person.linkFamily(a5, a6, new Person[] { b8, b9 }); Person.linkFamily(b3, b6, new Person[] { c1, c2, c3 }); Person.linkFamily(b4, b5, new Person[] { c4, c5, c6 }); Person.linkFamily(b8, b7, new Person[] { c7, c8, c9 }); Person.linkFamily(c4, c7, new Person[] { d1, d2 }); return a1; } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Create and set up the window. JFrame frame = new JFrame("GenealogyExample"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. GenealogyExample newContentPane = new GenealogyExample(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } }