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Sample Source Code

public class AttachLayoutSample implements AttachConstants {

  public static void main(String[] args) {

    Frame frame = new Frame("AttachLayout Sample");
    frame.setBackground(Color.lightGray);
    frame.setFont(new Font("HELVETICA", Font.PLAIN, 10));

    AttachLayout attachLayout = new AttachLayout();
    Panel panel = new Panel(attachLayout);

    Label title = new Label("This is a sample");

    Label label_1 = new Label("Label..1");
    Label label_2 = new Label("Label....2");
    Label label_3 = new Label("Label......3");

    Button button_1 = new Button("Button..1");
    Button button_2 = new Button("Button....2");
    Button button_3 = new Button("Button......3");

    Button button_yes = new Button("Yes");
    Button button_no = new Button("No");
    Button button_maybe = new Button("Maybe");

    Button button_ok = new Button("OK");
    Button button_cancel = new Button("Cancel");
    Button button_close = new Button("Close");

    TextArea textarea = new TextArea("This sample uses\n"
                                     + "only one panel\n"
                                     + "and one layout manager.");

    AttachLayout.Constraints cts = new AttachLayout.Constraints();

  /*
   * Define column_1
   */
    cts.attachToBorder(LEFT, FIXED, 5);
    cts.attachToBorder(RIGHT, ELASTIC, 120);
    attachLayout.defineColumn("column_1", cts);

  /*
   * Define constraints for label in top-left corner
   */
    cts.attachToBorder(TOP, FIXED, 5);
    cts.addToColumn("column_1", FIXED, 0, ELASTIC, 0);
    cts.attachNone(BOTTOM);

    panel.add(title, cts);


  /*
   * Define constraints for label 1
   */
    cts.attachToComponent(TOP, FIXED, 10, title, BOTTOM);
    cts.attachToComponent(BOTTOM, ELASTIC, 10, button_yes, TOP);
    // LEFT and RIGHT the same as defined for title: no need to redefine

    panel.add(label_1, cts);


  /*
   * Define constraints for label 2
   */
    cts.attachToComponent(TOP, FIXED, 5, label_1, BOTTOM);
    // LEFT, RIGHT and BOTTOM: no need to redefine

    panel.add(label_2, cts);


  /*
   * Define constraints for label 3
   */
    cts.attachToComponent(TOP, FIXED, 5, label_2, BOTTOM);
    // LEFT, RIGHT and BOTTOM: no need to redefine

    panel.add(label_3, cts);


  /*
   * Define constraints for button 1: align bottom with label 1
   */
    cts.attachToComponent(TOP, ELASTIC, 5, title, BOTTOM);
    // cts.attachToComponents(LEFT, FIXED, 3, column_1, RIGHT); //deprecated
    cts.attachToBox(LEFT, FIXED, 3, "column_1", RIGHT);
    cts.attachToComponent(BOTTOM, FIXED, 0, label_1, BOTTOM);
    cts.attachToBorder(RIGHT, ELASTIC, 120);
    cts.setPreferredWidth(80);

    panel.add(button_1, cts);


  /*
   * Define constraints for button 2: align bottom with label 2
   */
    cts.attachToComponent(TOP, ELASTIC, 3, label_1, BOTTOM);
    cts.attachToComponent(BOTTOM, FIXED, 0, label_2, BOTTOM);
    // LEFT, RIGHT and preferred width: no need to redefine

    panel.add(button_2, cts);


  /*
   * Define constraints for button 3: align bottom with label 3
   */
    cts.attachToComponent(TOP, ELASTIC, 3, label_2, BOTTOM);
    cts.attachToComponent(BOTTOM, FIXED, 0, label_3, BOTTOM);
    // LEFT, RIGHT and preferred width: no need to redefine

    panel.add(button_3, cts);


  /*
   * Define constraints for button ok:
   * Center between left border and one third of the panel's width
   */
    cts.attachToComponent(TOP, ELASTIC, 5, title, BOTTOM);
    cts.attachToBorder(LEFT, ELASTIC, 5);
    cts.attachToRelativePosition(RIGHT, ELASTIC, 2, 33);
    cts.attachToBorder(BOTTOM, FIXED, 5);
    // preferred width: no need to redefine

    panel.add(button_ok, cts);


  /*
   * Define constraints for button cancel:
   * Center between one third and two thirds of the panel's width
   */
    cts.attachToRelativePosition(LEFT, ELASTIC, 3, 33);
    cts.attachToRelativePosition(RIGHT, ELASTIC, 3, 67);
    // TOP, BOTTOM and preferred width: no need to redefine

    panel.add(button_cancel, cts);


  /*
   * Define constraints for button close:
   * Center between two thirds of the panel's width and right edge
   */
    cts.attachToRelativePosition(LEFT, ELASTIC, 2, 67);
    cts.attachToBorder(RIGHT, ELASTIC, 5);
    // TOP, BOTTOM and preferred width: no need to redefine

    panel.add(button_close, cts);


  /*
   * Define constraints for button yes
   * Center between left border and one third of the panel's width
   */
    cts.attachToBorder(LEFT, FIXED, 5);
    cts.attachToRelativePosition(RIGHT, FIXED, 2, 33);
    cts.attachToComponent(BOTTOM, FIXED, 5, button_ok, TOP);
    // TOP and preferred width: no need to redefine

    panel.add(button_yes, cts);


  /*
   * Define constraints for button no:
   * Center between one third and two thirds of the panel's width
   */
    cts.attachToRelativePosition(LEFT, FIXED, 3, 33);
    cts.attachToRelativePosition(RIGHT, FIXED, 3, 67);
    // TOP, BOTTOM and preferred width: no need to redefine

    panel.add(button_no, cts);


  /*
   * Define constraints for button maybe:
   * Center between two thirds of the panel's width and right edge
   */
    cts.attachToRelativePosition(LEFT, FIXED, 2, 67);
    cts.attachToBorder(RIGHT, FIXED, 5);
    // TOP, BOTTOM and preferred width: no need to redefine

    panel.add(button_maybe, cts);


  /*
   * Define constraints for textarea
   */
    cts.attachToBorder(TOP, FIXED, 5);
    cts.attachToComponent(LEFT, FIXED, 10, button_1, RIGHT);
    cts.attachToComponent(BOTTOM, FIXED, 10, button_yes, TOP);
    cts.attachToBorder(RIGHT, FIXED, 5);

    cts.setPreferredWidth(145);
    cts.setPreferredHeight(50);

    panel.add(textarea, cts);


  /*
   * Show it
   */
    frame.add(panel);
    frame.pack();
    frame.show();
  }
}