javax.swing.SwingConstants#LEADING源码实例Demo

public ConfigPane(String labelText, String hintText) {
    label = new JBasicLabel(labelText);
    textField = new JBasicTextField();
    saveButton = new JClassicButton(createSaveAction());
    hintLabel = new JBasicLabel(hintText, ConsoleIconFactory.getSwingIcon("question_message.png"), SwingConstants.LEADING);

    double[][] size = {
            { 100, TableLayout.FILL, TableLayout.PREFERRED },
            { TableLayout.PREFERRED, TableLayout.PREFERRED }
    };

    TableLayout tableLayout = new TableLayout(size);
    tableLayout.setHGap(0);
    tableLayout.setVGap(5);

    setLayout(tableLayout);
    add(label, "0, 0");
    add(textField, "1, 0");
    add(saveButton, "2, 0");
    add(hintLabel, "1, 1, 2, 1");
}
 

static boolean isLeadingAlign(Component component) {
    int alignment;
    
    if (component instanceof ProfilerRenderer) {
        alignment = ((ProfilerRenderer)component).getHorizontalAlignment();
    } else if (component instanceof JLabel) {
        alignment = ((JLabel)component).getHorizontalAlignment();
    } else {
        alignment = SwingConstants.LEADING;
    }
    
    return alignment == SwingConstants.LEADING ||
           alignment == SwingConstants.LEFT ||
           alignment == SwingConstants.CENTER;
}
 

@Override
public Object getValueAt(int rowIndex, int columnIndex) {
    ServerResourceDescriptor srd = resources.get(rowIndex);
    if (columnIndex == 0) {
        return srd.getType();
    } else {
        return new JLabel(srd.getName(), srd.getIcon(), SwingConstants.LEADING);
    }
}
 

static boolean isLeadingAlign(Component component) {
    int alignment;
    
    if (component instanceof ProfilerRenderer) {
        alignment = ((ProfilerRenderer)component).getHorizontalAlignment();
    } else if (component instanceof JLabel) {
        alignment = ((JLabel)component).getHorizontalAlignment();
    } else {
        alignment = SwingConstants.LEADING;
    }
    
    return alignment == SwingConstants.LEADING ||
           alignment == SwingConstants.LEFT ||
           alignment == SwingConstants.CENTER;
}
 

@Override
protected JPanel assemble() {
	JPanel ret = new JPanel();
	ret.setLayout(new BoxLayout(ret, BoxLayout.Y_AXIS));

	content = new HyperTextPane("-").withTransparency();
	HTMLEditorKit kit = new HTMLEditorKit();
	content.setEditorKit(kit);
	StyleSheet styleSheet = kit.getStyleSheet();
	styleSheet.addRule("body {color:#292929; font-family:Helvetica, Arial, sans-serif; margin: 4px;}");
	
	if (listener != null) {
		content.addHyperlinkListener(listener);
	}
	JPanel wrapper = new JPanel(false);
	wrapper.setLayout(new GridLayout(1, 0, 0, 0));
	JLabel lbl = new JLabel(title, new ImageIcon(getClass().getResource(
			"/icons/famfam/icons/bell.png")), SwingConstants.LEADING);
	if (color != null) {
		lbl.setForeground(color);
	}
	wrapper.add(lbl);
	wrapper.setBackground(wrapper.getBackground().darker());
	wrapper.setBorder(BorderFactory.createEtchedBorder());

	ret.add(wrapper);
	ret.add(content);
	return ret;
}
 

private boolean isLeftAligned(AbstractButton button, int position) {
	if (position == SwingConstants.WEST) {
		boolean ltr = button.getComponentOrientation().isLeftToRight();
		int hAlign = button.getHorizontalAlignment();
		return ((ltr && (hAlign == SwingConstants.LEFT || hAlign == SwingConstants.LEADING))
				|| (!ltr && (hAlign == SwingConstants.TRAILING)));
	}
	return false;
}
 

private boolean isRightAligned(AbstractButton button, int position) {
	if (position == SwingConstants.EAST) {
		boolean ltr = button.getComponentOrientation().isLeftToRight();
		int hAlign = button.getHorizontalAlignment();
		return ((ltr && (hAlign == SwingConstants.RIGHT || hAlign == SwingConstants.TRAILING))
				|| (!ltr && (hAlign == SwingConstants.LEADING)));
	}
	return false;
}
 

/**
 * Constructs a SimpleInternalFrame with the specified 
 * icon, title, tool bar, and content panel.
 * 
 * @param icon        the initial icon
 * @param title       the initial title
 * @param bar         the initial tool bar
 * @param content     the initial content pane
 */
public SimpleInternalFrame(
    Icon icon,
    String title,
    JToolBar bar,
    JComponent content) {
    super(new BorderLayout());
    this.selected = false;
    this.titleLabel = new JLabel(title, icon, SwingConstants.LEADING);        
    titleLabel.setFont(getTittleFont());        
    
    // Minimizing by double clicking
    this.addMouseListener(this);
    
    this.paintGradient = true;
    this.paintTitleBorder = false;
    
    JPanel top = buildHeader(titleLabel, bar);

    add(top, BorderLayout.NORTH);
    if (content != null) {
        setContent(content);
    }
    setBorder(new ShadowBorder());
    setSelected(true);
    updateHeader();
}
 

static boolean validHorizontalKey(int key) {
  return ((key == SwingConstants.LEFT)    ||
   (key == SwingConstants.CENTER)  ||
   (key == SwingConstants.RIGHT)   ||
   (key == SwingConstants.LEADING) ||
   (key == SwingConstants.TRAILING));
}
 

public ImprovedFileChooser(File currentDirectory, FileSystemView fsv) {
  super(currentDirectory, fsv);

  AbstractButton detailsViewButton = getDetailsViewButton(this);
  if (detailsViewButton == null) {
    // mac osx does not have a details button. It is recommended to use
    // a java.awt.FileDialog box on MacOSX for the proper look and feel.
    // so, don't warn if on a mac.
    // https://developer.apple.com/library/mac/documentation/Java/Conceptual/Java14Development/07-NativePlatformIntegration/NativePlatformIntegration.html
    if (!isMacOs) {
      logger.warn("Couldn't find Details button!");
    }
    return;
  }

  detailsViewButton.doClick(); // Programmatically switch to the Details View.

  List<JTable> tables = SwingUtils.getDescendantsOfType(JTable.class, this);
  JTable detailsTable;

  if (tables.size() != 1) {
    logger.warn("Expected to find 1 JTable in the file chooser, but found " + tables.size());
    return;
  } else if ((detailsTable = tables.get(0)) == null) {
    logger.warn("The details view table was null!");
    return;
  }

  // Set the preferred column widths so that they're big enough to display all data without truncation.
  ColumnWidthsResizer resizer = new ColumnWidthsResizer(detailsTable);
  detailsTable.getModel().addTableModelListener(resizer);
  detailsTable.getColumnModel().addColumnModelListener(resizer);

  // Left-align every cell, including header cells.
  TableAligner aligner = new TableAligner(detailsTable, SwingConstants.LEADING);
  detailsTable.getColumnModel().addColumnModelListener(aligner);

  // Every time the directory is changed in a JFileChooser dialog, a new TableColumnModel is created.
  // This is bad, because it discards the alignment decorators that we installed on the old model.
  // So, we 're going to listen for the creation of new TableColumnModels so that we can reinstall the decorators.
  detailsTable.addPropertyChangeListener(new NewColumnModelListener(detailsTable, SwingConstants.LEADING));

  // It's quite likely that the total width of the table is NOT EQUAL to the sum of the preferred column widths
  // that our TableModelListener calculated. In that case, resize all of the columns an equal percentage.
  // This will ensure that the relative ratios of the *actual* widths match those of the *preferred* widths.
  detailsTable.setAutoResizeMode(JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS);
}
 

/**
 * Updates the parameter panel for the selected {@link Configurable}.
 */
private void updateParameterPanel(Configurable config) {
	parameterPanel.removeAll();

	// save previously edited parameters
	updateModel();
	if (config != null) {
		try {
			// stripped text depending on the size of the panel
			String text = SwingTools.getStrippedJComponentText(outerPanel, config.getName(), outerPanel.getWidth() - 100,
					0);
			nameLabel.setText("<html><b>" + text + "</b></html>");

			// Get parameters based on Configurator implementation
			Parameters parameters = ConfigurationManager.getInstance().getAbstractConfigurator(config.getTypeId())
					.getParameterHandler(config).getParameters();

			// fill in real values of configurable
			for (String key : config.getParameters().keySet()) {
				parameters.setParameter(key, config.getParameters().get(key));
			}
			// init param panel with real values
			configParamPanel = new ConfiguratorParameterPanel(this, parameters);

			parameterLayer = new JLayer<JPanel>(configParamPanel);
			parameterLayer.setGlassPane(simpleGlassPane);
			simpleGlassPane.setVisible(false);

			// add it to wrapper panel
			parameterPanel.add(parameterLayer, BorderLayout.CENTER);

			boolean editingAllowed = true;
			boolean editingPossible = true;

			if (config.getSource() != null) {
				if (config.getSource().isConnected()) {
					if (!remoteControllers.get(config.getSource().getName()).getModel().hasAdminRights()) {
						editingAllowed = false;
					}
					// only interesting if we want to edit remote connections
					editingPossible = remoteControllers.get(config.getSource().getName()).getModel().isEditingPossible();
				}
			}

			if (!editingPossible) {

				SwingTools.setEnabledRecursive(configParamPanel, false);
				simpleGlassPane.setVisible(true);

			} else {
				if (!editingAllowed) {

					SwingTools.setEnabledRecursive(configParamPanel, false);
					simpleGlassPane.setVisible(true);
					renameButton.setVisible(false);
					removeButton.setVisible(false);
					actionPanel.setVisible(false);

				} else {

					if (!configParamPanel.isEnabled()) {
						SwingTools.setEnabledRecursive(configParamPanel, true);
					}

					if (simpleGlassPane.isVisible()) {
						simpleGlassPane.setVisible(false);
					}

					// make editing components visible
					renameButton.setVisible(true);
					removeButton.setVisible(true);
					actionPanel.setVisible(true);
				}
			}
		} catch (Exception e) {
			LogService.getRoot().log(Level.WARNING,
					"com.rapidminer.tools.config.gui.ConfigurableDialog.error_setting_parameters", e);

			// display error in GUI
			parameterPanel.removeAll();

			JLabel errorLabel = new JLabel(
					I18N.getGUIMessage(I18N
							.getGUIMessage("gui.dialog.configurable_dialog.error.display_stored_configurable.label")),
					FAILURE_ICON, SwingConstants.LEADING);
			errorLabel.setHorizontalAlignment(SwingConstants.CENTER);
			parameterPanel.add(errorLabel, BorderLayout.CENTER);
		}
	}
	updateButtonState(true);
	parameterPanel.revalidate();
	parameterPanel.repaint();
}
 

public static void addSeparator(Container container, String text) {
	JLabel l = new JLabel(text, SwingConstants.LEADING);

	container.add(l, "gapbottom 1, span, split 2, aligny center");
	container.add(new JSeparator(), "gapleft rel, growx");
}