/**
   * Calculates the preferred size dimensions for the specified panel given the components in the
   * specified parent container.
   *
   * @param target The component to be laid out.
   * @return A size deemed suitable for laying out the container.
   * @see #minimumLayoutSize
   */
  public Dimension preferredLayoutSize(Container target) {
    int count;
    Component component;
    Dimension dimension;
    Insets insets;
    Dimension ret;

    synchronized (target.getTreeLock()) {
      // get the the total height and maximum width component
      ret = new Dimension(0, 0);
      count = target.getComponentCount();
      for (int i = 0; i < count; i++) {
        component = target.getComponent(i);
        if (component.isVisible()) {
          dimension = component.getPreferredSize();
          ret.width = Math.max(ret.width, dimension.width);
          ret.height += dimension.height;
        }
      }
      insets = target.getInsets();
      ret.width += insets.left + insets.right;
      ret.height += insets.top + insets.bottom;
    }

    return (ret);
  }
Beispiel #2
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  /**
   * @param aContainer
   * @param aComponentClass
   * @return
   */
  private static Component findComponent(
      final Container aContainer, final Class<? extends Component> aComponentClass) {
    Component result = null;

    final int cnt = aContainer.getComponentCount();
    for (int i = 0; (result == null) && (i < cnt); i++) {
      final Component comp = aContainer.getComponent(i);
      if (aComponentClass.equals(comp.getClass())) {
        result = comp;
      } else if (comp instanceof Container) {
        result = findComponent((Container) comp, aComponentClass);
      }
    }
    return result;
  }
  /**
   * Lays out the container.
   *
   * @param target The container which needs to be laid out.
   */
  public void layoutContainer(Container target) {
    int count;
    Component component;
    Dimension dimension;

    synchronized (target.getTreeLock()) {
      count = target.getComponentCount();
      for (int i = 0; i < count; i++) {
        component = target.getComponent(i);
        if (component.isVisible()) {
          dimension = component.getPreferredSize();
          component.setSize(dimension.width, dimension.height);
        }
      }
    }
  }
  /**
   * Calculates the preferred size dimensions for the specified panel given the components in the
   * specified parent container.
   *
   * @see #minimumLayoutSize
   * @param target The component to be laid out.
   * @return A size deemed suitable for laying out the container.
   */
  public Dimension preferredLayoutSize(Container target) {
    int count;
    Container parent;
    Component component;
    Point point;
    Dimension dimension;
    Insets insets;
    Dimension ret;

    synchronized (target.getTreeLock()) {
      count = target.getComponentCount();
      if (0 == count) {
        // be the same size unless we have a parent
        ret = target.getSize();
        parent = target.getParent();
        if (null != parent) {
          insets = parent.getInsets();
          ret = parent.getSize();
          ret.setSize(
              ret.width - insets.left - insets.right, ret.height - insets.top - insets.bottom);
        }
      } else {
        ret = new Dimension(0, 0);
        for (int i = 0; i < count; i++) {
          component = target.getComponent(i);
          if (component.isVisible()) {
            point = component.getLocation();
            dimension = component.getPreferredSize();
            ret.width = Math.max(ret.width, point.x + dimension.width);
            ret.height = Math.max(ret.height, point.y + dimension.height);
          }
        }
        insets = target.getInsets();
        ret.width += insets.left + insets.right;
        ret.height += insets.top + insets.bottom;
      }
    }

    return (ret);
  }
  /**
   * Lays out the container.
   *
   * @param target The container which needs to be laid out.
   */
  public void layoutContainer(Container target) {
    Insets insets;
    int x;
    int y;
    int count;
    int width;
    Component component;
    Dimension dimension;

    synchronized (target.getTreeLock()) {
      insets = target.getInsets();
      x = insets.left;
      y = insets.top;
      count = target.getComponentCount();
      width = 0;
      for (int i = 0; i < count; i++) {
        component = target.getComponent(i);
        if (component.isVisible()) {
          dimension = component.getPreferredSize();
          width = Math.max(width, dimension.width);
          component.setSize(dimension.width, dimension.height);
          component.setLocation(x, y);
          y += dimension.height;
        }
      }
      // now set them all to the same width
      for (int i = 0; i < count; i++) {
        component = target.getComponent(i);
        if (component.isVisible()) {
          dimension = component.getSize();
          dimension.width = width;
          component.setSize(dimension.width, dimension.height);
        }
      }
    }
  }