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java.lang.Objectjava.awt.MenuComponent
java.awt.MenuItem
java.awt.Menu
java.awt.PopupMenu
public class PopupMenu
A class that implements a menu which can be dynamically popped up at a specified position within a component.
As the inheritance hierarchy implies, a PopupMenu
can be used anywhere a Menu can be used.
However, if you use a PopupMenu like a Menu
(e.g., you add it to a MenuBar), then you cannot
call show on that PopupMenu.
| Nested Class Summary | |
|---|---|
protected class |
PopupMenu.AccessibleAWTPopupMenu
Inner class of PopupMenu used to provide default support for accessibility. |
| Nested classes/interfaces inherited from class java.awt.Menu |
|---|
Menu.AccessibleAWTMenu |
| Nested classes/interfaces inherited from class java.awt.MenuItem |
|---|
MenuItem.AccessibleAWTMenuItem |
| Nested classes/interfaces inherited from class java.awt.MenuComponent |
|---|
MenuComponent.AccessibleAWTMenuComponent |
| Constructor Summary | |
|---|---|
PopupMenu()
Creates a new popup menu with an empty name. |
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PopupMenu(String label)
Creates a new popup menu with the specified name. |
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| Method Summary | |
|---|---|
void |
addNotify()
Creates the popup menu's peer. |
AccessibleContext |
getAccessibleContext()
Gets the AccessibleContext associated with this
PopupMenu. |
MenuContainer |
getParent()
Returns the parent container for this menu component. |
void |
show(Component origin,
int x,
int y)
Shows the popup menu at the x, y position relative to an origin component. |
| Methods inherited from class java.awt.Menu |
|---|
add, add, addSeparator, countItems, getItem, getItemCount, insert, insert, insertSeparator, isTearOff, paramString, remove, remove, removeAll, removeNotify |
| Methods inherited from class java.awt.MenuItem |
|---|
addActionListener, deleteShortcut, disable, disableEvents, enable, enable, enableEvents, getActionCommand, getActionListeners, getLabel, getListeners, getShortcut, isEnabled, processActionEvent, processEvent, removeActionListener, setActionCommand, setEnabled, setLabel, setShortcut |
| Methods inherited from class java.awt.MenuComponent |
|---|
dispatchEvent, getFont, getName, getPeer, getTreeLock, postEvent, setFont, setName, toString |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Methods inherited from interface java.awt.MenuContainer |
|---|
getFont, postEvent |
| Constructor Detail |
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public PopupMenu()
throws HeadlessException
HeadlessException - if GraphicsEnvironment.isHeadless()
returns true.GraphicsEnvironment.isHeadless()
public PopupMenu(String label)
throws HeadlessException
label - a non-null string specifying
the popup menu's label
HeadlessException - if GraphicsEnvironment.isHeadless()
returns true.GraphicsEnvironment.isHeadless()| Method Detail |
|---|
public MenuContainer getParent()
getParent in class MenuComponentnull if this menu component
is the outermost component, the menu bar itselfpublic void addNotify()
addNotify in class Menu
public void show(Component origin,
int x,
int y)
If this PopupMenu is being used as a Menu
(i.e., it has a non-Component parent),
then you cannot call this method on the PopupMenu.
origin - the component which defines the coordinate spacex - the x coordinate position to popup the menuy - the y coordinate position to popup the menu
NullPointerException - if the parent is null
IllegalArgumentException - if this PopupMenu
has a non-Component parent
IllegalArgumentException - if the origin is not in the
parent's heirarchy
RuntimeException - if the parent is not showing on screenpublic AccessibleContext getAccessibleContext()
AccessibleContext associated with this
PopupMenu.
getAccessibleContext in interface AccessiblegetAccessibleContext in class MenuAccessibleContext of this
PopupMenu
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Java™ Platform Standard Ed. 6 |
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