Java Code Examples for java.awt.GridBagLayout#getConstraints()

/**
 * Adds the directory or file field.
 *
 * @param label
 *            the label
 * @param defaultPath
 *            the default path
 * @param columns
 *            the columns
 */
public void addDirectoryOrFileField(String label, String defaultPath, int columns) {
	addStringField(label, defaultPath, columns);
	if (isHeadless())
		return;

	TextField text = (TextField) stringField.lastElement();
	GridBagLayout layout = (GridBagLayout) getLayout();
	GridBagConstraints constraints = layout.getConstraints(text);

	Button button = new Button("Browse...");
	DirectoryListener listener = new DirectoryListener("Browse for " + label, text,
			JFileChooser.FILES_AND_DIRECTORIES);
	button.addActionListener(listener);
	button.addKeyListener(this);

	Panel panel = new Panel();
	panel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
	panel.add(text);
	panel.add(button);

	layout.setConstraints(panel, constraints);
	add(panel);
}
 

/**
 * Adds the directory field.
 *
 * @param label
 *            the label
 * @param defaultPath
 *            the default path
 * @param columns
 *            the columns
 */
public void addDirectoryField(String label, String defaultPath, int columns) {
	addStringField(label, defaultPath, columns);
	if (isHeadless())
		return;

	TextField text = (TextField) stringField.lastElement();
	GridBagLayout layout = (GridBagLayout) getLayout();
	GridBagConstraints constraints = layout.getConstraints(text);

	Button button = new Button("Browse...");
	DirectoryListener listener = new DirectoryListener("Browse for " + label, text);
	button.addActionListener(listener);
	button.addKeyListener(this);

	Panel panel = new Panel();
	panel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
	panel.add(text);
	panel.add(button);

	layout.setConstraints(panel, constraints);
	add(panel);
}
 

/**
 * Adds the file field.
 *
 * @param label
 *            the label
 * @param defaultPath
 *            the default path
 * @param columns
 *            the columns
 */
public void addFileField(String label, String defaultPath, int columns) {
	addStringField(label, defaultPath, columns);
	if (isHeadless())
		return;

	TextField text = (TextField) stringField.lastElement();
	GridBagLayout layout = (GridBagLayout) getLayout();
	GridBagConstraints constraints = layout.getConstraints(text);

	Button button = new Button("Browse...");
	FileListener listener = new FileListener("Browse for " + label, text);
	button.addActionListener(listener);
	button.addKeyListener(this);

	Panel panel = new Panel();
	panel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
	panel.add(text);
	panel.add(button);

	layout.setConstraints(panel, constraints);
	add(panel);
}
 

public void testGridBagPanel_fourParams() {
    GridBagLayout gbl = new GridBagLayout();
    JPanel panel = new JPanel(gbl);
    JLabel comp = new JLabel("text");

    final GridBagConstraints gbconstr = GridBagUtils.createDefaultConstraints();
    GridBagUtils.setAttributes(gbconstr, "gridx=2, gridy=4");
    GridBagUtils.addToPanel(panel, comp, gbconstr);

    GridBagConstraints gbc = gbl.getConstraints(comp);
    assertEquals(GridBagConstraints.WEST, gbc.anchor);
    assertEquals(0, gbc.insets.top);
    assertEquals(3, gbc.insets.left);
    assertEquals(0, gbc.insets.bottom);
    assertEquals(3, gbc.insets.right);
    assertEquals(2, gbc.gridx);
    assertEquals(4, gbc.gridy);
    assertEquals(0, gbc.weightx, 0.01);
    assertEquals(0, gbc.weighty, 0.01);
    assertEquals(0, gbc.ipadx);
    assertEquals(0, gbc.ipady);
    assertEquals(1, gbc.gridheight);
    assertEquals(1, gbc.gridwidth);
}
 

public void testGridBagPanel_sevenParams() {
    GridBagLayout gbl = new GridBagLayout();
    JPanel panel = new JPanel(gbl);
    JLabel comp = new JLabel("text");


    final GridBagConstraints gbconstraints = GridBagUtils.createDefaultConstraints();
    GridBagUtils.setAttributes(gbconstraints, "gridx=2, gridy=4, anchor=SOUTHEAST, weighty=1.3, insets.top=5");
    GridBagUtils.addToPanel(panel, comp, gbconstraints);

    GridBagConstraints gbc = gbl.getConstraints(comp);
    assertEquals(GridBagConstraints.SOUTHEAST, gbc.anchor);
    assertEquals(5, gbc.insets.top);
    assertEquals(3, gbc.insets.left);
    assertEquals(0, gbc.insets.bottom);
    assertEquals(3, gbc.insets.right);
    assertEquals(2, gbc.gridx);
    assertEquals(4, gbc.gridy);
    assertEquals(0, gbc.weightx, 0.01);
    assertEquals(1.3, gbc.weighty, 0.01);
    assertEquals(0, gbc.ipadx);
    assertEquals(0, gbc.ipady);
    assertEquals(1, gbc.gridheight);
    assertEquals(1, gbc.gridwidth);
}
 

public void testGridBagPanel_eightParams() {
    GridBagLayout gbl = new GridBagLayout();
    JPanel panel = new JPanel(gbl);
    JLabel comp = new JLabel("text");

    final GridBagConstraints gbconstraints = GridBagUtils.createDefaultConstraints();
    GridBagUtils.setAttributes(gbconstraints,
                               "gridx=2, gridy=4, anchor=SOUTHEAST, weighty=1.3, insets.top=5, gridwidth=3");
    GridBagUtils.addToPanel(panel, comp, gbconstraints);

    GridBagConstraints gbc = gbl.getConstraints(comp);
    assertEquals(GridBagConstraints.SOUTHEAST, gbc.anchor);
    assertEquals(5, gbc.insets.top);
    assertEquals(3, gbc.insets.left);
    assertEquals(0, gbc.insets.bottom);
    assertEquals(3, gbc.insets.right);
    assertEquals(2, gbc.gridx);
    assertEquals(4, gbc.gridy);
    assertEquals(0, gbc.weightx, 0.01);
    assertEquals(1.3, gbc.weighty, 0.01);
    assertEquals(0, gbc.ipadx);
    assertEquals(0, gbc.ipady);
    assertEquals(1, gbc.gridheight);
    assertEquals(3, gbc.gridwidth);
}
 

public static void addSaveAsFileField( final GenericDialogPlus dialog, final String label, final String defaultPath, final int columns) {
	dialog.addStringField( label, defaultPath, columns );

	final TextField text = ( TextField ) dialog.getStringFields().lastElement();
	final GridBagLayout layout = ( GridBagLayout ) dialog.getLayout();
	final GridBagConstraints constraints = layout.getConstraints( text );

	final Button button = new Button( "Browse..." );
	final ChooseXmlFileListener listener = new ChooseXmlFileListener( text );
	button.addActionListener( listener );
	button.addKeyListener( dialog );

	final Panel panel = new Panel();
	panel.setLayout( new FlowLayout( FlowLayout.LEFT, 0, 0 ) );
	panel.add( text );
	panel.add( button );

	layout.setConstraints( panel, constraints );
	dialog.add( panel );
}
 

public synchronized void removeParameter(int index){
    GridBagLayout layout=(GridBagLayout)parametersPanel.getLayout();
    Row row=rows.get(index);
    row.panel.disconnect();
    
    parametersPanel.remove(row.panel);
    parametersPanel.remove(row.removeButton);
    rows.remove(index);
    for(int i=index;i<rows.size();i++){
        row=rows.get(i);
        GridBagConstraints gbc=layout.getConstraints(row.panel);
        gbc.gridy--;
        layout.setConstraints(row.panel, gbc);
        gbc=layout.getConstraints(row.removeButton);
        gbc.gridy--;
        layout.setConstraints(row.removeButton, gbc);
        if(this.orderingHint!=null) row.panel.setOrderingHint(this.orderingHint+i);
    }
    
    this.revalidate();
    parametersPanel.repaint();
}
 

public void removeAddon(AddonPanel addonPanel){
    synchronized(addonPanels){
        int index=addonPanels.indexOf(addonPanel);
        if(index<0) return;
        addonPanel.disconnect();
        GridBagLayout gbl=(GridBagLayout)addonPanelContainer.getLayout();
        for(int i=index+1;i<addonPanels.size();i++){
            AddonPanel p=addonPanels.get(i);
            GridBagConstraints gbc=gbl.getConstraints(p);
            gbc.gridy--;
            gbl.setConstraints(p, gbc);
        }
        addonPanels.remove(index);
        addonPanelContainer.remove(addonPanel);
    }
    this.revalidate();
    addonPanelContainer.repaint();        
}
 

private void scaleLayout( JXHeader header ) {
	if( UIScale.getUserScaleFactor() == 1f )
		return;

	LayoutManager layout = header.getLayout();
	if( !(layout instanceof GridBagLayout) )
		return;

	GridBagLayout gbl = (GridBagLayout) layout;
	for( Component c : header.getComponents() ) {
		GridBagConstraints cons = gbl.getConstraints( c );
		cons.insets = UIScale.scale( cons.insets );
		gbl.setConstraints( c, cons );
	}
}
 

/**
 * Gets the constraints.
 *
 * @return the constraints
 */
// right away)
protected GridBagConstraints getConstraints() {
	GridBagLayout layout = (GridBagLayout) getLayout();
	Panel panel = new Panel();
	addPanel(panel);
	GridBagConstraints constraints = layout.getConstraints(panel);
	remove(panel);
	return constraints;
}
 

/**
	 * A copy of Curtis's method
	 * 
	 * https://github.com/openmicroscopy/bioformats/blob/v4.4.8/components/loci-plugins/src/loci/plugins/util/WindowTools.java#L72
	 * 
	 *
	 * @param pane
	 */
	public static void addScrollBars(Container pane) {
//        * <dependency>
//        * <groupId>${bio-formats.groupId}</groupId>
//        * <artifactId>loci_plugins</artifactId>
//        * <version>${bio-formats.version}</version>
//        * </dependency>

		GridBagLayout layout = (GridBagLayout) pane.getLayout();

		// extract components
		int count = pane.getComponentCount();
		Component[] c = new Component[count];
		GridBagConstraints[] gbc = new GridBagConstraints[count];
		for (int i = 0; i < count; i++) {
			c[i] = pane.getComponent(i);
			gbc[i] = layout.getConstraints(c[i]);
		}

		// clear components
		pane.removeAll();
		layout.invalidateLayout(pane);

		// create new container panel
		Panel newPane = new Panel();
		GridBagLayout newLayout = new GridBagLayout();
		newPane.setLayout(newLayout);
		for (int i = 0; i < count; i++) {
			newLayout.setConstraints(c[i], gbc[i]);
			newPane.add(c[i]);
		}

		// HACK - get preferred size for container panel
		// NB: don't know a better way:
		// - newPane.getPreferredSize() doesn't work
		// - newLayout.preferredLayoutSize(newPane) doesn't work
		Frame f = new Frame();
		f.setLayout(new BorderLayout());
		f.add(newPane, BorderLayout.CENTER);
		f.pack();
		final Dimension size = newPane.getSize();
		f.remove(newPane);
		f.dispose();

		// compute best size for scrollable viewport
		size.width += 25;
		size.height += 15;
		Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
		int maxWidth = 7 * screen.width / 8;
		int maxHeight = 3 * screen.height / 4;
		if (size.width > maxWidth)
			size.width = maxWidth;
		if (size.height > maxHeight)
			size.height = maxHeight;

		// create scroll pane
		ScrollPane scroll = new ScrollPane() {
			private static final long serialVersionUID = 1L;

			public Dimension getPreferredSize() {
				return size;
			}
		};
		scroll.add(newPane);

		// add scroll pane to original container
		GridBagConstraints constraints = new GridBagConstraints();
		constraints.gridwidth = GridBagConstraints.REMAINDER;
		constraints.fill = GridBagConstraints.BOTH;
		constraints.weightx = 1.0;
		constraints.weighty = 1.0;
		layout.setConstraints(scroll, constraints);
		pane.add(scroll);
	}