Examples with HeadlessException java.awt.HeadlessException used on opensource projects

Example 46 with HeadlessException

use of java.awt.HeadlessException in project JMRI by JMRI.

the class InputWindow method storeFile.

/**
     * Save the contents of this input window to a file.
     *
     * @param fileChooser the chooser to select the file with
     * @return true if successful; false otherwise
     */
protected boolean storeFile(JFileChooser fileChooser) {
    boolean results = false;
    File file = getFile(fileChooser);
    if (file != null) {
        try {
            // check for possible overwrite
            if (file.exists()) {
                int selectedValue = JOptionPane.showConfirmDialog(null, "File " + file.getName() + " already exists, overwrite it?", "Overwrite file?", JOptionPane.OK_CANCEL_OPTION);
                if (selectedValue != JOptionPane.OK_OPTION) {
                    // user clicked no to override
                    results = false;
                    return results;
                }
            }
            StringBuilder fileData = new StringBuilder(area.getText());
            try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
                writer.append(fileData);
            }
        } catch (HeadlessException | IOException e) {
            log.error("Unhandled problem in storeFile: " + e);
        }
    } else {
        // If the file is null then the user has clicked cancel.
        results = true;
    }
    return results;
}

Example 47 with HeadlessException

use of java.awt.HeadlessException in project JMRI by JMRI.

the class RosterEntry method updateFile.

/**
     * Write the contents of this RosterEntry back to a file, preserving all
     * existing decoder CV content.
     * <p>
     * This writes the file back in place, with the same decoder-specific
     * content.
     */
public void updateFile() {
    LocoFile df = new LocoFile();
    String fullFilename = LocoFile.getFileLocation() + getFileName();
    // read in the content
    try {
        mRootElement = df.rootFromName(fullFilename);
    } catch (JDOMException | IOException e) {
        log.error("Exception while loading loco XML file: " + getFileName() + " exception: " + e);
    }
    try {
        File f = new File(fullFilename);
        // do backup
        df.makeBackupFile(LocoFile.getFileLocation() + getFileName());
        // and finally write the file
        df.writeFile(f, mRootElement, this.store());
    } catch (Exception e) {
        log.error("error during locomotive file output", e);
        try {
            JOptionPane.showMessageDialog(null, ResourceBundle.getBundle("jmri.jmrit.roster.JmritRosterBundle").getString("ErrorSavingText") + "\n" + e.getMessage(), ResourceBundle.getBundle("jmri.jmrit.roster.JmritRosterBundle").getString("ErrorSavingTitle"), JOptionPane.ERROR_MESSAGE);
        } catch (HeadlessException he) {
        // silently ignore inability to display dialog
        }
    }
}

Example 48 with HeadlessException

use of java.awt.HeadlessException in project processdash by dtuma.

the class WBSEditor method main.

public static void main(String[] args) {
    args = maybeParseJnlpArgs(args);
    if (isDumpAndExitMode())
        System.setProperty("java.awt.headless", "true");
    ExternalLocationMapper.getInstance().loadDefaultMappings();
    RuntimeUtils.autoregisterPropagatedSystemProperties();
    for (String prop : PROPS_TO_PROPAGATE) RuntimeUtils.addPropagatedSystemProperty(prop, null);
    String[] locations = args;
    boolean bottomUp = Boolean.getBoolean("teamdash.wbs.bottomUp");
    boolean indivMode = Boolean.getBoolean("teamdash.wbs.indiv");
    String indivInitials = System.getProperty("teamdash.wbs.indivInitials");
    boolean showTeam = Boolean.getBoolean("teamdash.wbs.showTeamMemberList");
    boolean readOnly = Boolean.getBoolean("teamdash.wbs.readOnly") || TeamServerSelector.isHistoricalModeEnabled();
    String syncURL = System.getProperty("teamdash.wbs.syncURL");
    String itemHref = System.getProperty("teamdash.wbs.showItem");
    String owner = System.getProperty("teamdash.wbs.owner");
    try {
        createAndShowEditor(locations, bottomUp, indivMode, indivInitials, showTeam, syncURL, true, readOnly, itemHref, owner);
    } catch (HeadlessException he) {
        he.printStackTrace();
        System.exit(1);
    }
    new Timer(DAY_MILLIS, new UsageLogAction()).start();
    maybeNotifyOpened();
}

Example 49 with HeadlessException

use of java.awt.HeadlessException in project Lucee by lucee.

the class Image method toBufferedImage.

// This method returns a buffered image with the contents of an image
public static BufferedImage toBufferedImage(java.awt.Image image) {
    if (image instanceof BufferedImage) {
        return (BufferedImage) image;
    }
    // This code ensures that all the pixels in the image are loaded
    image = new ImageIcon(image).getImage();
    // Determine if the image has transparent pixels; for this method's
    boolean hasAlpha = hasAlpha(image);
    // Create a buffered image with a format that's compatible with the screen
    BufferedImage bimage = null;
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    try {
        // Determine the type of transparency of the new buffered image
        int transparency = Transparency.OPAQUE;
        if (hasAlpha) {
            transparency = Transparency.BITMASK;
        }
        // Create the buffered image
        GraphicsDevice gs = ge.getDefaultScreenDevice();
        GraphicsConfiguration gc = gs.getDefaultConfiguration();
        bimage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
    } catch (HeadlessException e) {
    // The system does not have a screen
    }
    if (bimage == null) {
        // Create a buffered image using the default color model
        int type = BufferedImage.TYPE_INT_RGB;
        if (hasAlpha) {
            type = BufferedImage.TYPE_INT_ARGB;
        }
        bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), type);
    }
    // Copy image to buffered image
    Graphics g = bimage.createGraphics();
    // Paint the image onto the buffered image
    g.drawImage(image, 0, 0, null);
    g.dispose();
    return bimage;
}

Example 50 with HeadlessException

use of java.awt.HeadlessException in project eclipse.platform.releng by eclipse.

the class AwtScreenshot method main.

public static void main(String[] args) {
    try {
        System.setProperty("java.awt.headless", "false");
        Robot robot = new Robot();
        Rectangle rect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
        BufferedImage image = robot.createScreenCapture(rect);
        File file = new File(args[0]);
        ImageIO.write(image, "png", file);
        System.out.println("AWT screenshot saved to: " + file.getAbsolutePath());
    } catch (HeadlessException e) {
        e.printStackTrace();
    } catch (AWTException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}