inspector.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.

        } else {
            // otherwise, show them all, in alphabetical order
            sortedKeys = sortKeys(keySet);
        }

        int num = sortedKeys.size();
        editors = new Hashtable(num);

        JButton doneButton = null, cancelButton = null;

        JPanel component = new JPanel();
        component.setLayout(new BorderLayout());

        JPanel propertyPanel = new JPanel();

        GridBagLayout gridbag = new GridBagLayout();
        GridBagConstraints c = new GridBagConstraints();
        c.insets = new Insets(2, 10, 2, 10);
        propertyPanel.setLayout(gridbag);

        int i = 0;
        for (Iterator it = sortedKeys.iterator(); it.hasNext();) { // iterate
            // properties
            String prop = (String) it.next();

            String marker = prop;
            if (prefix != null && prop.startsWith(prefix)) {
                marker = prop.substring(prefix.length() + 1);
            }

            if (marker.startsWith(".")) {
                marker = marker.substring(1);
            }

            String editorMarker = marker
                    + PropertyConsumer.ScopedEditorProperty;
            String editorClass = info.getProperty(editorMarker);
            if (editorClass == null) {
                editorClass = defaultEditorClass;
            }

            // instantiate PropertyEditor
            Class propertyEditorClass = null;
            PropertyEditor editor = null;
            try {
                propertyEditorClass = Class.forName(editorClass);
                editor = (PropertyEditor) propertyEditorClass.newInstance();
                if (editor instanceof PropertyConsumer) {
                    ((PropertyConsumer) editor).setProperties(marker, info);
                }
                editors.put(prop, editor);
            } catch (Exception e) {
                e.printStackTrace();
                editorClass = null;
            }

            Component editorFace = null;
            if (editor != null && editor.supportsCustomEditor()) {
                editorFace = editor.getCustomEditor();
            } else {
                editorFace = new JLabel("Does not support custom editor");
            }

            if (editor != null) {
                Object propVal = props.get(prop);
                if (Debug.debugging("inspector")) {
                    Debug.output("Inspector loading " + prop + "(" + propVal
                            + ")");
                }
                editor.setValue(propVal);
            }

            // Customized labels for each property, instead of the
            // abbreviated nature of the true property names.
            String labelMarker = marker + PropertyConsumer.LabelEditorProperty;
            String labelText = info.getProperty(labelMarker);
            if (labelText == null) {
                labelText = marker;
            }

            JLabel label = new JLabel(labelText + ":");
            label.setHorizontalAlignment(SwingConstants.RIGHT);

            c.gridx = 0;
            c.gridy = i++;
            c.weightx = 0;
            c.fill = GridBagConstraints.NONE;
            c.anchor = GridBagConstraints.EAST;

            gridbag.setConstraints(label, c);
            propertyPanel.add(label);

            c.gridx = 1;
            c.anchor = GridBagConstraints.WEST;
            c.fill = GridBagConstraints.HORIZONTAL;
            c.weightx = 1f;

            gridbag.setConstraints(editorFace, c);
            propertyPanel.add(editorFace);

            String toolTip = (String) info.get(marker);
            label.setToolTipText(toolTip == null ? "No further information available."
                    : toolTip);
        }

        // create the palette's scroll pane
        JScrollPane scrollPane = new JScrollPane(propertyPanel, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        //      scrollPane.setAlignmentX(Component.LEFT_ALIGNMENT);
        scrollPane.setAlignmentY(Component.TOP_ALIGNMENT);
        component.add(scrollPane, BorderLayout.CENTER);

        JPanel buttons = new JPanel();
        if (print) {
            doneButton = new JButton("Print");
            cancelButton = new JButton("Quit");
        } else {
            doneButton = new JButton("OK");
            cancelButton = new JButton("Cancel");
        }
        doneButton.addActionListener(this);
        doneButton.setActionCommand(doneCommand);
        cancelButton.addActionListener(this);
        cancelButton.setActionCommand(cancelCommand);
        buttons.add(doneButton);
        buttons.add(cancelButton);

        component.add(buttons, BorderLayout.SOUTH);

        component.validate();
        return component;
    }

    /**
     * Implement the ActionListener interface. The actions registering
     * here should be generated by the two buttons in the Inspector
     * GUI.
     */
    public void actionPerformed(ActionEvent e) {
        final String actionCommand = e.getActionCommand();
        String prefix = propertyConsumer.getPropertyPrefix();

        if (actionCommand == doneCommand) {// confirmed
            Properties props = collectProperties();

            if (!print) {
                windowSupport.killWindow();
                propertyConsumer.setProperties(prefix, props);
                if (actionListener != null) {
                    actionListener.actionPerformed(e);
                }
            } else {
                Collection keys = props.keySet();
                Iterator it = keys.iterator();
                while (it.hasNext()) {
                    String next = (String) it.next();
                    System.out.println(next + "=" + props.get(next));
                }
            }

        } else if (actionCommand == cancelCommand) {// canceled
            if (actionListener != null && actionListener != this) {
                actionListener.actionPerformed(e);
            }
            propertyConsumer = null; // to be garb. coll'd
            windowSupport.killWindow();

            if (print) {
                System.exit(0);
            }
        }
    }

    /** Extracts properties from textfield[]. */
    public Properties collectProperties() {
        Properties props = new Properties();

        Iterator values = editors.keySet().iterator();
        while (values.hasNext()) {
            String key = (String) values.next();
            PropertyEditor editor = (PropertyEditor) editors.get(key);
            if (editor != null) {
                String stuff = editor.getAsText();
                // If it's not defined with text, don't put it in the
                // properties. The layer should handle this and use
                // its default settings.
                if (!stuff.equals("")) {
                    props.put(key, stuff);
                }

                if (editor instanceof PropertyConsumer) {
                    ((PropertyConsumer) editor).getProperties(props);
                }
            }
        }
        return props;
    }

    public void setPrint(boolean p) {
        print = p;
    }

    public boolean getPrint() {
        return print;
    }

    public WindowSupport getWindowSupport() {
        return windowSupport;
    }

    /** test cases. */
    public static void main(String[] args) {
        Debug.init();
        String name = (args.length < 1) ? "com.bbn.openmap.layer.shape.ShapeLayer"
                : args[0];
        PropertyConsumer propertyconsumer = null;
        try {
            Class c = Class.forName(name);
            propertyconsumer = (PropertyConsumer) c.newInstance();
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(1);
        }

        Properties props = new Properties(), info = new Properties();
        System.out.println("Inspecting " + name);

        String pp = name.substring(name.lastIndexOf(".") + 1);
        propertyconsumer.setPropertyPrefix(pp.toLowerCase());

        props = propertyconsumer.getProperties(props);
        info = propertyconsumer.getPropertyInfo(info);

        Inspector inspector = new Inspector();
        inspector.setPrint(true);
        inspector.addActionListener(inspector);
        inspector.inspectPropertyConsumer(propertyconsumer);
    }
}