DefaultMenuLayout (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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javax.swing.plaf.basic
Class DefaultMenuLayout

java.lang.Object
  |
  +--javax.swing.BoxLayout
        |
        +--javax.swing.plaf.basic.DefaultMenuLayout

All Implemented Interfaces:: LayoutManager, LayoutManager2, Serializable, UIResource

public class DefaultMenuLayout
extends BoxLayout
implements UIResource

The default layout manager for Popup menus and menubars. This class is an extension of BoxLayout which adds the UIResource tag so that plauggable L&Fs can distinguish it from user-installed layout managers on menus.

Field Summary

Fields inherited from class javax.swing.BoxLayout

LINE_AXIS, PAGE_AXIS, X_AXIS, Y_AXIS

Constructor Summary

DefaultMenuLayout(Container target, int axis)

Method Summary

Dimension preferredLayoutSize(Container target)
Returns the preferred dimensions for this layout, given the components in the specified target container.

Methods inherited from class javax.swing.BoxLayout

addLayoutComponent, addLayoutComponent, getLayoutAlignmentX, getLayoutAlignmentY, invalidateLayout, layoutContainer, maximumLayoutSize, minimumLayoutSize, removeLayoutComponent

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultMenuLayout

public DefaultMenuLayout(Container target,
                         int axis)

Method Detail

preferredLayoutSize

public Dimension preferredLayoutSize(Container target)

Description copied from class: BoxLayout

Returns the preferred dimensions for this layout, given the components in the specified target container.

Specified by:: preferredLayoutSize in interface LayoutManager
Overrides:: preferredLayoutSize in class BoxLayout

Parameters:: target - the container that needs to be laid out
Returns:: the dimensions >= 0 && <= Integer.MAX_VALUE
See Also:: Container, BoxLayout.minimumLayoutSize(java.awt.Container), BoxLayout.maximumLayoutSize(java.awt.Container)