beanpanel.java

openmap java写的开源数字地图程序. 用applet实现,可以像google map 那样放大缩小地图.

            if (Debug.debugging("beanpanel"))
                Debug.output("BP::BeanHelper:error " + message);
            e.printStackTrace();
        }

        public void error(String message) {
            if (Debug.debugging("beanpanel"))
                Debug.output("BP::BeanHelper:error " + message);
        }
    }

    private class MyCellRenderer implements ListCellRenderer {

        public Component getListCellRendererComponent(JList list, Object value, // value
                                                                                // to
                                                                                // display
                                                      int index, // cell
                                                                 // index
                                                      boolean isSelected, // is
                                                                          // the
                                                                          // cell
                                                                          // selected
                                                      boolean cellHasFocus) // the
                                                                            // list
                                                                            // and
                                                                            // the
                                                                            // cell
                                                                            // have
                                                                            // the
                                                                            // focus
        {
            String s = value.toString();

            JLabel label = new JLabel(s);
            label.setHorizontalAlignment(JLabel.LEFT);
            int i = beanLabels.indexOf(s);
            ImageIcon icon = (ImageIcon) beanIcons.get(i);
            label.setIcon(icon);

            if (isSelected) {
                label.setBackground(list.getSelectionBackground());
                label.setForeground(list.getSelectionForeground());
            } else {
                label.setBackground(list.getBackground());
                label.setForeground(list.getForeground());
            }

            label.setEnabled(list.isEnabled());
            label.setFont(list.getFont());
            label.setOpaque(true);
            return label;
        }
    }

    /* DnD Listeners */

    private class ComponentDragSourceListener implements DragSourceListener {
        public void dragDropEnd(DragSourceDropEvent dsde) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dragDropEnd (drag)");
        }

        public void dragEnter(DragSourceDragEvent dsde) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dragEnter (drag)");
            int action = dsde.getDropAction();
            if (action == DnDConstants.ACTION_MOVE) {
                dsde.getDragSourceContext().setCursor(customCursor);
            } else {
                dsde.getDragSourceContext()
                        .setCursor(DragSource.DefaultCopyNoDrop);
            }
        }

        public void dragOver(DragSourceDragEvent dsde) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dragOver (drag)");
            int action = dsde.getDropAction();
            if (action == DnDConstants.ACTION_MOVE) {
                dsde.getDragSourceContext().setCursor(customCursor);
            } else {
                dsde.getDragSourceContext()
                        .setCursor(DragSource.DefaultCopyNoDrop);
            }
        }

        public void dropActionChanged(DragSourceDragEvent dsde) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dropActionChanged (drag)");
            int action = dsde.getDropAction();
            if (action == DnDConstants.ACTION_MOVE) {
                dsde.getDragSourceContext().setCursor(customCursor);
            } else {
                dsde.getDragSourceContext()
                        .setCursor(DragSource.DefaultCopyNoDrop);
            }
        }

        public void dragExit(DragSourceEvent dse) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dragExit (drag)");
            dse.getDragSourceContext().setCursor(DragSource.DefaultCopyNoDrop);
        }
    }

    private class ComponentDragGestureListener implements DragGestureListener {
        ComponentDragSourceListener tdsl;

        public ComponentDragGestureListener(ComponentDragSourceListener tdsl) {
            this.tdsl = tdsl;
        }

        public void dragGestureRecognized(DragGestureEvent dge) {
            if (Debug.debugging("beanpanel"))
                Debug.output("dragGestureRecognized");
            JList list = (JList) tabbedPane.getComponentAt(tabbedPane.getSelectedIndex());
            String label = null;
            label = (String) list.getSelectedValue();
            if (label != null) {
                int index = beanLabels.indexOf(label);
                if (index == -1) {
                    System.out.println("ERROR> BP::dragGestureRecognized: "
                            + "no beanlabel found for label=" + label);
                    return;
                }

//                JarInfo ji = (JarInfo) beanJars.get(index);
                String beanName = (String) beanNames.get(index);

                Object bean = null;
                try {
                    bean = Beans.instantiate(null, beanName);
                    if (Debug.debugging("beanpanel"))
                        Debug.output("Instantiated bean: " + bean);
                    setDragCursor(index);

                } catch (Exception ex) {
                    System.out.println("ERROR> BP::dragGestureRecognized: "
                            + " error instantiating bean");
                    ex.printStackTrace();
                    return;
                }

                BeanInfo bi = (BeanInfo) beanInfos.get(index);

                Vector beanTransferData = new Vector();
                beanTransferData.add(bean);
                beanTransferData.add(bi);
                beanTransferData.add(new Boolean(false));
                dragSource.startDrag(dge,
                        customCursor,
                        new DefaultTransferableObject(beanTransferData),
                        tdsl);

                revalidate();
                repaint();
            }
        }
    }

    private class MouseEventForwarder extends MouseInputAdapter {

        public void mousePressed(MouseEvent e) {
            Component comp = (Component) e.getSource();
            Container parent = comp.getParent();
            if (parent != null) {
                Point newPoint = SwingUtilities.convertPoint(comp,
                        e.getPoint(),
                        parent);
                e.translatePoint(newPoint.x - e.getX(), newPoint.y - e.getY());
                MouseEvent me = new MouseEvent(parent, e.getID(), e.getWhen(), e.getModifiers(), e.getX(), e.getY(), e.getClickCount(), e.isPopupTrigger());
                parent.dispatchEvent(me);
            }
        }

        public void mouseReleased(MouseEvent e) {
            Component comp = (Component) e.getSource();
            Container parent = comp.getParent();
            if (parent != null) {
                Point newPoint = SwingUtilities.convertPoint(comp,
                        e.getPoint(),
                        parent);
                e.translatePoint(newPoint.x - e.getX(), newPoint.y - e.getY());
                MouseEvent me = new MouseEvent(parent, e.getID(), e.getWhen(), e.getModifiers(), e.getX(), e.getY(), e.getClickCount(), e.isPopupTrigger());
                parent.dispatchEvent(me);
            }
        }

        public void mouseDragged(MouseEvent e) {
            Component comp = (Component) e.getSource();
            Container parent = comp.getParent();
            if (parent != null) {
                Point newPoint = SwingUtilities.convertPoint(comp,
                        e.getPoint(),
                        parent);
                e.translatePoint(newPoint.x - e.getX(), newPoint.y - e.getY());
                MouseEvent me = new MouseEvent(parent, e.getID(), e.getWhen(), e.getModifiers(), e.getX(), e.getY(), e.getClickCount(), e.isPopupTrigger());
                parent.dispatchEvent(me);
            }
        }
    }

    private static void setDefaultIcon() {
        if (BeanPanel.defaultBeanIcon == null) {
            URL url = BeanPanel.class.getResource("bluebean.gif");
            if (url != null)
                BeanPanel.defaultBeanIcon = new ImageIcon(url);
        }
    }

    private static void augmentBeanInfoSearchPath() {

        if (Debug.debugging("beanpanel"))
            Debug.output("Enter> augmentBeanInfoSearchPath");

        String beanInfoPath = System.getProperty("bean.infos.path");

        if (Debug.debugging("beanpanel"))
            Debug.output("beanInfoPath=" + beanInfoPath);

        if (beanInfoPath == null
                || (beanInfoPath = beanInfoPath.trim()).length() == 0)
            return;

        String[] oldPath = java.beans.Introspector.getBeanInfoSearchPath();

        Vector newPath = new Vector();

        if (oldPath != null && oldPath.length > 0)
            newPath.addAll(Arrays.asList(oldPath));

        if (Debug.debugging("beanpanel"))
            Debug.output("oldPath=" + newPath);

        StringTokenizer st = new StringTokenizer(beanInfoPath, ", ");

        while (st.hasMoreTokens()) {
            String path = st.nextToken();

            if (newPath.contains(path))
                continue;

            newPath.add(path);
        }

        java.beans.Introspector.setBeanInfoSearchPath((String[]) newPath.toArray(new String[0]));

        if (Debug.debugging("beanpanel"))
            Debug.output("UPDATED> beanInfo search path to: " + newPath);

        if (Debug.debugging("beanpanel"))
            Debug.output("Exit> augmentBeanInfoSearchPath");
    }

    public static void main(String[] args) {

        Properties props = new Properties();
        props.setProperty("beanpanel.beans.path", "");
        props.setProperty("beanpanel.tabs", "tab1 tab2 tab3");
        props.setProperty("beanpanel.tab1.name", "Generic");
        props.setProperty("beanpanel.tab1.beans",
                "com.bbn.openmap.examples.beanbox.SimpleBeanObject");
        props.setProperty("beanpanel.tab2.name", "Container");
        props.setProperty("beanpanel.tab2.beans",
                "com.bbn.openmap.examples.beanbox.SimpleBeanContainer");
        props.setProperty("beanpanel.tab3.name", "Military");
        props.setProperty("beanpanel.tab3.beans",
                "com.bbn.openmap.examples.beanbox.Fighter");

        BeanPanel bp = new BeanPanel(props);
        JFrame beanFrame = new JFrame("Bean Box");
        beanFrame.getContentPane().add(bp);
        beanFrame.pack();
        beanFrame.setVisible(true);

        try {
            Thread.sleep(2000);
            beanFrame.setVisible(false);
            Thread.sleep(2000);
            beanFrame.setVisible(true);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}