MenuComponent
is the superclass
of all menu-related components. In this respect, the class
MenuComponent
is analogous to the abstract superclass
Component
for AWT components.
Menu components receive and process AWT events, just as components do,
through the method processEvent
.
Modifier and Type | Class and Description |
---|---|
protected class |
MenuComponent.AccessibleAWTMenuComponent
Inner class of
MenuComponent used to provide
default support for accessibility. |
Constructor and Description |
---|
MenuComponent()
Creates a
MenuComponent . |
Modifier and Type | Method and Description |
---|---|
void |
dispatchEvent(AWTEvent e)
Delivers an event to this component or one of its sub components.
|
javax.accessibility.AccessibleContext |
getAccessibleContext()
Gets the
AccessibleContext associated with
this MenuComponent . |
Font |
getFont()
Gets the font used for this menu component.
|
java.lang.String |
getName()
Gets the name of the menu component.
|
MenuContainer |
getParent()
Returns the parent container for this menu component.
|
java.awt.peer.MenuComponentPeer |
getPeer()
Deprecated. As of JDK version 1.1,
programs should not directly manipulate peers.
|
protected java.lang.Object |
getTreeLock()
Gets this component's locking object (the object that owns the thread
sychronization monitor) for AWT component-tree and layout
operations.
|
protected java.lang.String |
paramString()
Returns a string representing the state of this
MenuComponent . |
boolean |
postEvent(Event evt)
Deprecated. As of JDK version 1.1, replaced by
dispatchEvent . |
protected void |
processEvent(AWTEvent e)
Processes events occurring on this menu component.
|
void |
removeNotify()
Removes the menu component's peer.
|
void |
setFont(Font f)
Sets the font to be used for this menu component to the specified
font.
|
void |
setName(java.lang.String name)
Sets the name of the component to the specified string.
|
java.lang.String |
toString()
Returns a representation of this menu component as a string.
|
MenuComponent
.HeadlessException
- if
GraphicsEnvironment.isHeadless
returns true
GraphicsEnvironment.isHeadless()
setName(java.lang.String)
name
- the name of the menu componentgetName()
null
if this menu component
is the outermost component, the menu bar itselfnull
otherwisesetFont(java.awt.Font)
Some platforms may not support setting of all font attributes
of a menu component; in such cases, calling setFont
will have no effect on the unsupported font attributes of this
menu component. Unless subcomponents of this menu component
specify a different font, this font will be used by those
subcomponents if supported by the underlying platform.
f
- the font to be setgetFont()
,
Font.getAttributes()
,
TextAttribute
dispatchEvent
.evt
- the event which is to take placee
- the eventNote that if the event parameter is null
the behavior is unspecified and may result in an
exception.
e
- the eventMenuComponent
. This method is intended to be used
only for debugging purposes, and the content and format of the
returned string may vary between implementations. The returned
string may be empty but may not be null
.toString
in class java.lang.Object
AccessibleContext
associated with
this MenuComponent
.
The method implemented by this base class returns null
.
Classes that extend MenuComponent
should implement this method to return the
AccessibleContext
associated with the subclass.AccessibleContext
of this
MenuComponent