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JavaTM 2 Platform Std. Ed. v1.6.0
javax.swing
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Nested Class Summary | |
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protected class |
JApplet.AccessibleJApplet
This class implements accessibility support for the JApplet class. |
Nested classes/interfaces inherited from class java.applet.Applet |
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Applet.AccessibleApplet |
Nested classes/interfaces inherited from class java.awt.Panel |
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Panel.AccessibleAWTPanel |
Nested classes/interfaces inherited from class java.awt.Container |
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Container.AccessibleAWTContainer |
Nested classes/interfaces inherited from class java.awt.Component |
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Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy |
Field Summary | |
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protected AccessibleContext |
accessibleContext
|
protected JRootPane |
rootPane
|
protected boolean |
rootPaneCheckingEnabled
If true then calls to add and setLayout
will be forwarded to the contentPane . |
Fields inherited from class java.awt.Component |
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BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface java.awt.image.ImageObserver |
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ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
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JApplet()
Creates a swing applet instance. |
Method Summary | |
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protected void |
addImpl(Component comp,
Object constraints,
int index)
Adds the specified child Component . |
protected JRootPane |
createRootPane()
Called by the constructor methods to create the default rootPane. |
AccessibleContext |
getAccessibleContext()
Gets the AccessibleContext associated with this JApplet. |
Container |
getContentPane()
Returns the contentPane object for this applet. |
Component |
getGlassPane()
Returns the glassPane object for this applet. |
Graphics |
getGraphics()
Creates a graphics context for this component. |
JMenuBar |
getJMenuBar()
Returns the menubar set on this applet. |
JLayeredPane |
getLayeredPane()
Returns the layeredPane object for this applet. |
JRootPane |
getRootPane()
Returns the rootPane object for this applet. |
TransferHandler |
getTransferHandler()
Gets the transferHandler property. |
protected boolean |
isRootPaneCheckingEnabled()
Returns whether calls to add and
setLayout are forwarded to the contentPane . |
protected String |
paramString()
Returns a string representation of this JApplet. |
void |
remove(Component comp)
Removes the specified component from the container. |
void |
repaint(long time,
int x,
int y,
int width,
int height)
Repaints the specified rectangle of this component within time milliseconds. |
void |
setContentPane(Container contentPane)
Sets the contentPane property. |
void |
setGlassPane(Component glassPane)
Sets the glassPane property. |
void |
setJMenuBar(JMenuBar menuBar)
Sets the menubar for this applet. |
void |
setLayeredPane(JLayeredPane layeredPane)
Sets the layeredPane property. |
void |
setLayout(LayoutManager manager)
Sets the LayoutManager . |
protected void |
setRootPane(JRootPane root)
Sets the rootPane property. |
protected void |
setRootPaneCheckingEnabled(boolean enabled)
Sets whether calls to add and
setLayout are forwarded to the contentPane . |
void |
setTransferHandler(TransferHandler newHandler)
Sets the transferHandler property, which is a mechanism to
support transfer of data into this component. |
void |
update(Graphics g)
Just calls paint(g) . |
Methods inherited from class java.applet.Applet |
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destroy, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, init, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus, start, stop |
Methods inherited from class java.awt.Panel |
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addNotify |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected JRootPane rootPane
protected boolean rootPaneCheckingEnabled
add
and setLayout
will be forwarded to the contentPane
. This is initially
false, but is set to true when the JApplet
is constructed.
protected AccessibleContext accessibleContext
Constructor Detail |
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public JApplet() throws HeadlessException
This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale
.
HeadlessException
- if GraphicsEnvironment.isHeadless()
returns true.GraphicsEnvironment.isHeadless()
,
JComponent.getDefaultLocale()
Method Detail |
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protected JRootPane createRootPane()
public void setTransferHandler(TransferHandler newHandler)
transferHandler
property, which is a mechanism to
support transfer of data into this component. Use null
if the component does not support data transfer operations.
If the system property suppressSwingDropSupport
is false
(the default) and the current drop target on this component is either
null
or not a user-set drop target, this method will change the
drop target as follows: If newHandler
is null
it will
clear the drop target. If not null
it will install a new
DropTarget
.
Note: When used with JApplet
, TransferHandler
only
provides data import capability, as the data export related methods
are currently typed to JComponent
.
Please see How to Use Drag and Drop and Data Transfer, a section in The Java Tutorial, for more information.
newHandler
- the new TransferHandler
TransferHandler
,
getTransferHandler()
,
Component.setDropTarget(java.awt.dnd.DropTarget)
public TransferHandler getTransferHandler()
transferHandler
property.
transferHandler
propertyTransferHandler
,
setTransferHandler(javax.swing.TransferHandler)
public void update(Graphics g)
paint(g)
. This method was overridden to
prevent an unnecessary call to clear the background.
g
- the specified Graphics windowComponent.update(Graphics)
public void setJMenuBar(JMenuBar menuBar)
menuBar
- the menubar being placed in the appletgetJMenuBar()
public JMenuBar getJMenuBar()
setJMenuBar(javax.swing.JMenuBar)
protected boolean isRootPaneCheckingEnabled()
add
and
setLayout
are forwarded to the contentPane
.
add
and setLayout
are fowarded; false otherwiseaddImpl(java.awt.Component, java.lang.Object, int)
,
setLayout(java.awt.LayoutManager)
,
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
protected void setRootPaneCheckingEnabled(boolean enabled)
add
and
setLayout
are forwarded to the contentPane
.
enabled
- true if add
and setLayout
are forwarded, false if they should operate directly on the
JApplet
.addImpl(java.awt.Component, java.lang.Object, int)
,
setLayout(java.awt.LayoutManager)
,
isRootPaneCheckingEnabled()
,
RootPaneContainer
protected void addImpl(Component comp, Object constraints, int index)
Component
.
This method is overridden to conditionally forward calls to the
contentPane
.
By default, children are added to the contentPane
instead
of the frame, refer to RootPaneContainer
for
details.
comp
- the component to be enhancedconstraints
- the constraints to be respectedindex
- the index
IllegalArgumentException
- if index
is invalid
IllegalArgumentException
- if adding the container's parent
to itself
IllegalArgumentException
- if adding a window to a containersetRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
public void remove(Component comp)
comp
is not the rootPane
, this will forward
the call to the contentPane
. This will do nothing if
comp
is not a child of the JFrame
or
contentPane
.
comp
- the component to be removed
NullPointerException
- if comp
is nullContainer.add(java.awt.Component)
,
RootPaneContainer
public void setLayout(LayoutManager manager)
LayoutManager
.
Overridden to conditionally forward the call to the
contentPane
.
Refer to RootPaneContainer
for
more information.
manager
- the LayoutManager
setRootPaneCheckingEnabled(boolean)
,
RootPaneContainer
public JRootPane getRootPane()
getRootPane
in interface RootPaneContainer
setRootPane(javax.swing.JRootPane)
,
RootPaneContainer.getRootPane()
protected void setRootPane(JRootPane root)
root
- the rootPane object for this appletgetRootPane()
public Container getContentPane()
getContentPane
in interface RootPaneContainer
setContentPane(java.awt.Container)
,
RootPaneContainer.getContentPane()
public void setContentPane(Container contentPane)
setContentPane
in interface RootPaneContainer
contentPane
- the contentPane object for this applet
IllegalComponentStateException
- (a runtime
exception) if the content pane parameter is nullgetContentPane()
,
RootPaneContainer.setContentPane(java.awt.Container)
public JLayeredPane getLayeredPane()
getLayeredPane
in interface RootPaneContainer
IllegalComponentStateException
- (a runtime
exception) if the layered pane parameter is nullsetLayeredPane(javax.swing.JLayeredPane)
,
RootPaneContainer.getLayeredPane()
public void setLayeredPane(JLayeredPane layeredPane)
setLayeredPane
in interface RootPaneContainer
layeredPane
- the layeredPane object for this appletgetLayeredPane()
,
RootPaneContainer.setLayeredPane(javax.swing.JLayeredPane)
public Component getGlassPane()
getGlassPane
in interface RootPaneContainer
setGlassPane(java.awt.Component)
,
RootPaneContainer.getGlassPane()
public void setGlassPane(Component glassPane)
setGlassPane
in interface RootPaneContainer
glassPane
- the glassPane object for this appletgetGlassPane()
,
RootPaneContainer.setGlassPane(java.awt.Component)
public Graphics getGraphics()
null
if this component is currently not
displayable.
getGraphics
in class Component
null
if it has noneComponent.paint(java.awt.Graphics)
public void repaint(long time, int x, int y, int width, int height)
time
milliseconds. Refer to RepaintManager
for details on how the repaint is handled.
time
- maximum time in milliseconds before updatex
- the x coordinatey
- the y coordinatewidth
- the widthheight
- the heightRepaintManager
protected String paramString()
null
.
paramString
in class Container
public AccessibleContext getAccessibleContext()
getAccessibleContext
in interface Accessible
getAccessibleContext
in class Applet