java.awt.Cursor#WAIT_CURSOR源码实例Demo

private static boolean isWaitCursor() {
    Component focus = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
    if (focus != null) {
        if (focus.getCursor().getType() == Cursor.WAIT_CURSOR) {
            LOG.finer("wait cursor on focus owner"); // NOI18N
            return true;
        }
        Window w = SwingUtilities.windowForComponent(focus);
        if (w != null && isWaitCursorOnWindow(w)) {
            LOG.finer("wait cursor on window"); // NOI18N
            return true;
        }
    }
    for (Frame f : Frame.getFrames()) {
        if (isWaitCursorOnWindow(f)) {
            LOG.finer("wait cursor on frame"); // NOI18N
            return true;
        }
    }
    LOG.finest("no wait cursor"); // NOI18N
    return false;
}
 

private static boolean isWaitCursorOnWindow(Window w) {
    if (w.getCursor().getType() == Cursor.WAIT_CURSOR) {
        return true;
    }
    if (w instanceof JFrame) {
        JRootPane root = ((JFrame)w).getRootPane();
        if (null != root) {
            Component glass = root.getGlassPane();
            if (null != glass && glass.getCursor().getType() == Cursor.WAIT_CURSOR) {
                return true;
            }
        }
    }
    return false;
}
 

/**
	 * Set file path.
	 *
	 * @param textField		TextField to set the file path
	 * @param f				File to set.
	 * @param imagePanel	ImagePnel to set the image
	 * @return	true - no problem / false - error occured
	 */
	private boolean setFilePath(JTextField textField, File f, ImagePanel imagePanel) {
		final Cursor defaultCursor = new Cursor(Cursor.DEFAULT_CURSOR);
		final Cursor waitCursor = new Cursor(Cursor.WAIT_CURSOR);
		String prevText = textField.getText();
		try {
			if (textField == null || f == null) {
				if (textField != null) textField.setText("");
				if (imagePanel != null) imagePanel.clear();
				if (imagePanel == splashImage) { this.setSplashBackgroundColor(null); }
				return false;
			}
			this.setCursor(waitCursor);
			textField.setText(f.getCanonicalPath());
			if (imagePanel != null) {
				ImageFile imageFile = checkFile(textField);
				if (imageFile == null) {
					textField.setText("");
					if (imagePanel != null) imagePanel.clear();
					if (imagePanel == splashImage) { this.setSplashBackgroundColor(null); }
					return false;
				}
				if (!this.isBatchMode()) {
					imagePanel.setImage(imageFile.getImage());
					imagePanel.setImageFile(imageFile.getFile());
				}
				selectedDirectory = imageFile.getFile().getParentFile();
				if (IOSImageUtil.isNullOrWhiteSpace(outputPath.getText())) {
					File g = new File(f.getParentFile(), this.generateAsAssetCatalogs.isSelected() ? this.getResource("string.dir.assets", "Images.xcassets") : this.getResource("string.dir.generate", "generated"));
					outputPath.setText(g.getCanonicalPath());
				}
				if (imagePanel == splashImage) {
					Color c = imageFile.getDefaultBackgroundColor();
					this.setSplashBackgroundColor(String.format("%2h%2h%2h%2h", c.getAlpha(), c.getRed(), c.getGreen(), c.getBlue()).replace(' ', '0'));
				}
			}

			final JTextField[] paths = { icon6Path, watchPath, carplayPath, macPath, ipadIconPath, ipadLaunchPath };
			for (int i = 0; i < paths.length; i++) {
				if (paths[i] == textField) {
					optionalImages.setSelectedIndex(i);
				}
			}
		} catch (Throwable t) {
			handleThrowable(t);
			textField.setText("");
			if (imagePanel != null) imagePanel.clear();
			return false;
		} finally {

			boolean mainImageSelected = icon7Image.getImage() != null
									||	splashImage.getImage() != null
									||	watchImage.getImage() != null
									||	icon6Image.getImage() != null;
			boolean optionImageSelected = ipadIconImage.getImage() != null
									||	ipadLaunchImage.getImage() != null
									||	macImage.getImage() != null
									||	carplayImage.getImage() != null;
			forwardButton.setForeground(optionImageSelected ? COLOR_CYAN : COLOR_DARK_GRAY);
//			forwardButton.setText(String.format("%s%s", optionImageSelected ? "* " : "", getResource("label.optional.forward.button", "More >>")));
//			forwardButton.setBorder(new LineBorder(optionImageSelected ? COLOR_CYAN : COLOR_DARK_GRAY, 1));
			backButton.setForeground(mainImageSelected ? COLOR_WINERED : COLOR_DARK_GRAY);
//			backButton.setText(String.format("%s%s", getResource("label.optional.back.button", "<< Back"), mainImageSelected ? " *" : ""));
//			backButton.setBorder(new LineBorder(mainImageSelected ? COLOR_WINERED : COLOR_DARK_GRAY, 1));
			this.setCursor(defaultCursor);
			if (!prevText.equals(textField.getText())) {
				this.setStorePropertiesRequested(true);
			}
		}
		return true;
	}
 

public LogPanel() {
    if (tailer == null) {

        setPreferredSize(new Dimension(400, 300));
        setLayout(new BorderLayout());

        textArea = new JTextArea();
        textArea.setEditable(false);
        textArea.setLineWrap(true);
        textArea.setWrapStyleWord(true);
        JScrollPane scrollPanel = new JScrollPane(textArea);

        linesTextField = new JTextField();
        linesTextField.setPreferredSize(dim);
        linesTextField.setMinimumSize(dim);
        linesTextField.setMaximumSize(dim);
        linesTextField.setText(String.valueOf(LINES));

        JToolBar toolBar = new JToolBar();
        toolBar.setRollover(true);
        toolBar.add(new ClearLogAction(textArea));
        toolBar.add(new ReloadLogAction(textArea, this));

        JPanel topPanel = new JPanel();
        topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.X_AXIS));
        topPanel.add(toolBar);
        topPanel.add(Box.createHorizontalStrut(5));
        topPanel.add(new JLabel(I18NSupport.getString("logpanel.last.lines")));
        topPanel.add(Box.createHorizontalStrut(5));
        topPanel.add(linesTextField);
        topPanel.add(Box.createHorizontalGlue());

        add(topPanel, BorderLayout.NORTH);
        add(scrollPanel, BorderLayout.CENTER);

        final File log = new File(LOG);
        if (!log.exists()) {
            try {
                new File(LOG_DIR).mkdirs();
                boolean created = log.createNewFile();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }

        // read existing text in log
        Thread t = new Thread(new Runnable() {
            public void run() {
                Cursor hourGlassCursor = new Cursor(Cursor.WAIT_CURSOR);
                setCursor(hourGlassCursor);

                //@todo
                //reload(log, textArea);

                tailer = new LogFileTailer(log, 1000, false);
                tailer.addLogFileTailerListener(LogPanel.this);
                tailer.setPriority(Thread.MIN_PRIORITY);

                // very consuming !!!
                //tailer.start();

                Cursor normalCursor = new Cursor(Cursor.DEFAULT_CURSOR);
                setCursor(normalCursor);
            }
        }, "NEXT : " + getClass().getSimpleName());
        t.start();

    }
}