Java HelpSet.createHelpBroker方法代码示例

import javax.help.HelpSet; //导入方法依赖的package包/类
public void actionPerformed(ActionEvent e) {
    try {
        String helpHS = "jhelpset.hs"; //$NON-NLS-1$
        ClassLoader cl = getClass().getClassLoader();
        URL hsURL = HelpSet.findHelpSet(cl, helpHS);
        HelpSet hs = new HelpSet(null, hsURL);
        HelpBroker hb = hs.createHelpBroker();
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
 
        // Default HelpBroker size is too small, make bigger unless on anciente "VGA" resolution
        if (d.width >= 1024 && d.height >= 800) {
            hb.setSize(new Dimension(1024, 700));
        } else {
            hb.setSize(new Dimension(640, 480));
        }
        CSH.DisplayHelpFromSource helpDisplay = new CSH.DisplayHelpFromSource(hb);
        helpDisplay.actionPerformed(e);

    } catch (Exception ev) {
        setEnabled(false);
        SPSUtils.showExceptionDialogNoReport(parentFrame,
                "Could not load help file",
                ev);
    }         
}
 

import javax.help.HelpSet; //导入方法依赖的package包/类
/**
    *
    */

public void startupMapHook() {
	super.startupMapHook();
	// Find the HelpSet file and create the HelpSet object:
	String helpHS = "plugins/help/doc/freemind.hs";
	try {
		ClassLoader classLoader = this.getClass().getClassLoader();
		URL hsURL = HelpSet.findHelpSet(classLoader, helpHS);
		HelpSet hs = new HelpSet(classLoader, hsURL);
		HelpBroker hb = hs.createHelpBroker();
		hb.initPresentation();
		hb.setDisplayed(true);
		hb.setViewDisplayed(true);
	} catch (Exception ee) {
		// Say what the exception really is
		freemind.main.Resources.getInstance().logException(ee);
		logger.warning("HelpSet " + ee.getMessage() + ee);
		logger.warning("HelpSet " + helpHS + " not found");
		return;
	}
}
 

import javax.help.HelpSet; //导入方法依赖的package包/类
/**
 * Initialize the JavaHelp system.
 */
public static void initHelpSystem() {
    // optimization to avoid repeated init
    if (fHelp != null && fDisplayHelp != null)
        return;

    // (uses the classloader mechanism)
    ClassLoader loader = IntroduceHelp.class.getClassLoader();
    URL helpSetURL = HelpSet.findHelpSet(loader, "Introduce.hs");
    try {
        helpSet = new HelpSet(null, helpSetURL);
        fHelp = helpSet.createHelpBroker();
        fDisplayHelp = new CSH.DisplayHelpFromSource(fHelp);

    } catch (HelpSetException ex) {
        logger.warn("Cannot create help system with: " + helpSetURL + " " + ex.getMessage());
    }
}
 

import javax.help.HelpSet; //导入方法依赖的package包/类
public void actionPerformed(ActionEvent e) {
	try {
		String helpHS = "jhelpset.hs";
		ClassLoader cl = getClass().getClassLoader();
		URL hsURL = HelpSet.findHelpSet(cl, helpHS);
		HelpSet hs = new HelpSet(null, hsURL);
		HelpBroker hb = hs.createHelpBroker();
		Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

		// Default HelpBroker size is too small, make bigger unless on anciente "VGA" resolution
		if (d.width >= 1024 && d.height >= 800) {
			hb.setSize(new Dimension(1024, 700));
		} else {
			hb.setSize(new Dimension(640, 480));
		}
		CSH.DisplayHelpFromSource helpDisplay = new CSH.DisplayHelpFromSource(hb);
		helpDisplay.actionPerformed(e);

	} catch (Exception ev) {
		setEnabled(false);
		SPSUtils.showExceptionDialogNoReport(parent,
				"Could not load the help file. The dqguruhelp.jar file either " +
				"doesn't exist or isn't in your classpath.\nThis error usually " +
				"occurrs because you are running the DQguru within an IDE.\n" +
				"The Help function is now disabled",
				ev);
	}         
}
 

import javax.help.HelpSet; //导入方法依赖的package包/类
public TrajStatHelp() {
    f = new JFrame("Menu Example");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JMenuBar mbar = new JMenuBar();

    // a file menu   
    JMenu file = new JMenu("File");
    JMenu help = new JMenu("Help");

    // add an item to the help menu   
    help.add(topics = new JMenuItem("Help Topics"));

    // add the menu items to the menu bar   
    mbar.add(file);
    mbar.add(help);

    // 1. create HelpSet and HelpBroker objects   
    HelpSet hs = getHelpSet("mi.hs");
    HelpBroker hb = hs.createHelpBroker();

    // 2. assign help to components   
    CSH.setHelpIDString(topics, "top");

    // 3. handle events   
    topics.addActionListener(new CSH.DisplayHelpFromSource(hb));

    // attach menubar to frame, set its size, and make it visible   
    f.setJMenuBar(mbar);
    f.setSize(500, 300);
    f.setVisible(true);
}
 

import javax.help.HelpSet; //导入方法依赖的package包/类
/**
 * Tell if help set can be used
 *
 * @return true if the help set can be used, false otherwise.
 */
public static boolean isAvailable() {
    if (_instance == null) {
        _instance = new HelpView();
    }

    if (!_alreadyInitialized) {
        final ClassLoader appClassLoader = _instance.getClass().getClassLoader();

        URL url = null;
        try {
            // Get the helpset file and create the centered help broker 
            url = HelpSet.findHelpSet(appClassLoader, "documentation.hs");

            _logger.debug("HelpSet.findHelpSet(appClassLoader, 'documentation.hs') = '{}'.", url);

            // http://forums.sun.com/thread.jspa?messageID=10522645
            url = UrlUtils.fixJarURL(url);

            _logger.debug("using helpset url = '{}'.", url);

            // check if the url is valid :
            if (url == null) {
                _logger.info("No helpset document found.");

                return false;
            }

            final HelpSet helpSet = new HelpSet(appClassLoader, url);

            _helpBroker = helpSet.createHelpBroker();

        } catch (Exception e) {
            // skip complex case
            _logger.error("Problem during helpset creation (url='{}', classloader={})",
                    url, appClassLoader, e);
        }

        _alreadyInitialized = true;
    }

    return (_helpBroker != null);
}