public class BasicPopupMenuUI extends PopupMenuUI
Modifier and Type | Field and Description |
---|---|
protected JPopupMenu |
popupMenu |
Constructor and Description |
---|
BasicPopupMenuUI() |
Modifier and Type | Method and Description |
---|---|
static ComponentUI |
createUI(JComponent x) |
void |
installDefaults() |
protected void |
installKeyboardActions() |
protected void |
installListeners() |
void |
installUI(JComponent c)
适当地配置指定的组件的外观和感觉。
|
boolean |
isPopupTrigger(MouseEvent e) |
protected void |
uninstallDefaults() |
protected void |
uninstallKeyboardActions() |
protected void |
uninstallListeners() |
void |
uninstallUI(JComponent c)
在installUI中反转在
installUI 上完成的
installUI 。
|
getPopup
contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMaximumSize, getMinimumSize, getPreferredSize, paint, update
protected JPopupMenu popupMenu
public static ComponentUI createUI(JComponent x)
public void installUI(JComponent c)
ComponentUI
ComponentUI
实例作为指定组件上的UI委托时,将调用此方法。
该方法应该完全配置组件的外观,包括以下内容:
LayoutManager
上安装LayoutManager。 PropertyChangeListener
上创建/安装PropertyChangeListener,以便适当地检测和响应组件属性的更改。 installUI
在
ComponentUI
c
- 正在安装此UI代理的组件
ComponentUI.uninstallUI(javax.swing.JComponent)
,
JComponent.setUI(javax.swing.plaf.ComponentUI)
,
JComponent.updateUI()
public void installDefaults()
protected void installListeners()
protected void installKeyboardActions()
public void uninstallUI(JComponent c)
ComponentUI
installUI
上完成的installUI
。
当将此UIComponent
实例作为指定组件的UI委托删除时,将调用此方法。
该方法应该撤消在installUI中执行的installUI
,小心使JComponent
实例处于干净状态(无外部监听器,外观特定属性对象等)。
这应该包括以下内容:
uninstallUI
在
ComponentUI
c
- 从中删除此UI代理的组件;
这个参数经常被忽略,但如果UI对象是无状态的并且被多个组件共享,则可能会被使用
ComponentUI.installUI(javax.swing.JComponent)
,
JComponent.updateUI()
protected void uninstallDefaults()
protected void uninstallListeners()
protected void uninstallKeyboardActions()
public boolean isPopupTrigger(MouseEvent e)
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2014, Oracle and/or its affiliates. All rights reserved.