getAlignmentY method to indicate
* that the component wishes to be aligned to the bottom relative to
* other components.
*/
public static final float BOTTOM_ALIGNMENT = (float)1.0;
/**
* Constant returned by the getAlignmentY and
* getAlignmentX methods to indicate
* that the component wishes to be aligned to the center relative to
* other components.
*/
public static final float CENTER_ALIGNMENT = (float)0.5;
/**
* Constant returned by the getAlignmentY method to indicate
* that the component wishes to be aligned to the top relative to
* other components.
*/
public static final float TOP_ALIGNMENT = (float)0.0;
/**
* Constant returned by the getAlignmentX method to indicate
* that the component wishes to be aligned to the right relative to
* other components.
*/
public static final float RIGHT_ALIGNMENT = (float)1.0;
/**
* Constant returned by the getAlignmentX method to indicate
* that the component wishes to be aligned to the left relative to
* other components.
*/
public static final float LEFT_ALIGNMENT = (float)0.0;
/* Make the treelock a String so that it can easily be identified
in debug dumps. We clone the String in order to avoid a conflict in
the unlikely event that some other package uses exactly the same string
as a lock object. */
static Object treeLock = new String("AWT_TREE_LOCK");
/* Serialized fields from the serialization spec. */
// FIXME: Default values?
int x;
int y;
int width;
int height;
Color foreground;
Color background;
Font font;
Font peerFont;
Cursor cursor;
Locale locale;
boolean visible = true; // default (except for Window)
boolean enabled = true;
boolean valid;
boolean hasFocus;
//DropTarget dropTarget;
Vector popups;
String name;
boolean nameExplicitlySet;
Dimension minSize;
Dimension prefSize;
boolean newEventsOnly;
long eventMask = AWTEvent.PAINT_EVENT_MASK;
PropertyChangeSupport changeSupport;
boolean isPacked;
int componentSerializedDataVersion;
/* AccessibleContext accessibleContext; */
/* Anything else is non-serializable, and should be declared "transient". */
transient Container parent;
transient java.awt.peer.ComponentPeer peer;
transient ComponentListener componentListener;
transient FocusListener focusListener;
transient KeyListener keyListener;
transient MouseListener mouseListener;
transient MouseMotionListener mouseMotionListener;
transient InputMethodListener inputMethodListener;
transient HierarchyListener hierarchyListener;
transient HierarchyBoundsListener hierarchyBoundsListener;
transient ComponentOrientation orientation = ComponentOrientation.UNKNOWN;
/**
* Default constructor for subclasses.
*/
protected Component()
{
}
/**
* Returns the name of this component.
*
* @return The name of this component.
*/
public String getName()
{
if (name == null && !nameExplicitlySet)
name = generateName();
return name;
}
/**
* Sets the name of this component to the specified name.
*
* @param name The new name of this component.
*/
public void setName(String name)
{
nameExplicitlySet = true;
this.name = name;
}
/** Subclasses should override this to return unique component names like
* "menuitem0".
*/
String generateName()
{
// Component is abstract.
return null;
}
/**
* Returns the parent of this component.
*
* @return The parent of this component.
*/
public Container getParent()
{
return parent;
}
// Sets the peer for this component.
final void setPeer (ComponentPeer peer)
{
this.peer = peer;
}
/**
* Returns the native windowing system peer for this component.
*
* @return The peer for this component.
* @deprecated
*/
// Classpath's Gtk peers rely on this.
public java.awt.peer.ComponentPeer getPeer()
{
return peer;
}
// FIXME: java.awt.dnd classes not yet implemented
/*
public void setDropTarget(DropTarget dt)
{
this.dropTarget = dt;
}
public DropTarget getDropTarget()
{
return dropTarget;
}
*/
/** @since 1.3 */
public GraphicsConfiguration getGraphicsConfiguration()
{
return getGraphicsConfigurationImpl();
}
/** Implementation method that allows classes such as Canvas and
Window to override the graphics configuration without violating
the published API. */
GraphicsConfiguration getGraphicsConfigurationImpl()
{
if (peer != null)
{
GraphicsConfiguration config = peer.getGraphicsConfiguration();
if (config != null)
return config;
}
if (parent != null)
return parent.getGraphicsConfiguration();
return null;
}
/**
* Returns the object used for synchronization locks on this component
* when performing tree and layout functions.
*
* @return The synchronization lock for this component.
*/
public final Object getTreeLock()
{
return treeLock;
}
// The sync lock object for this component.
final void setTreeLock(Object tree_lock)
{
this.treeLock = tree_lock;
}
/**
* Returns the toolkit in use for this component.
*
* @return The toolkit for this component.
*/
public Toolkit getToolkit()
{
if (peer != null)
{
Toolkit tk = peer.getToolkit();
if (tk != null)
return tk;
}
if (parent != null)
return parent.getToolkit ();
return Toolkit.getDefaultToolkit ();
}
/**
* Tests whether or not this component is valid. A invalid component needs
* to have its layout redone.
*
* @return true if this component is valid, false
* otherwise.
*/
public boolean isValid()
{
return valid;
}
/** @since 1.2 */
public boolean isDisplayable()
{
if (parent != null)
return parent.isDisplayable();
return false;
}
/**
* Tests whether or not this component is visible.
*
* @return true if the component is visible,
* false otherwise.
*/
public boolean isVisible()
{
return visible;
}
/**
* Tests whether or not this component is actually being shown on
* the screen. This will be true if and only if it this component is
* visible and its parent components are all visible.
*
* @return true if the component is showing on the screen,
* false otherwise.
*/
public boolean isShowing()
{
if (! visible || peer == null)
return false;
return parent == null ? true : parent.isShowing ();
}
/**
* Tests whether or not this component is enabled.
*
* @return true if the component is enabled,
* false otherwise.
*/
public boolean isEnabled()
{
return enabled;
}
/**
* Enables or disables this component.
*
* @param enabled true to enable this component,
* false to disable it.
*
* @deprecated Deprecated in favor of setEnabled().
*/
public void setEnabled(boolean b)
{
this.enabled = b;
if (peer != null)
peer.setEnabled(b);
}
/**
* Enables this component.
*
* @deprecated Deprecated in favor of setEnabled().
*/
public void enable()
{
setEnabled(true);
}
/**
* Enables or disables this component.
*
* @param enabled true to enable this component,
* false to disable it.
*
* @deprecated Deprecated in favor of setEnabled().
*/
public void enable(boolean b)
{
setEnabled(b);
}
/**
* Disables this component.
*
* @deprecated Deprecated in favor of setEnabled().
*/
public void disable()
{
setEnabled(false);
}
public boolean isDoubleBuffered()
{
return false;
}
/** @since 1.2 */
public void enableInputMethods(boolean enable)
{
// FIXME
}
/**
* Makes this component visible or invisible.
*
* @param visible true to make this component visible,
* false to make it invisible.
* @specnote Inspection by subclassing shows that Sun's implementation
* calls show(boolean) which then calls show() or hide(). It is
* the show() method that is overriden in subclasses like Window.
* We do the same to preserve compatibility for subclasses.
*/
public void setVisible(boolean b)
{
if (peer != null)
peer.setVisible (b);
this.visible = b;
}
/**
* Makes this component visible on the screen.
*
* @deprecated Deprecated in favor of setVisible().
*/
public void show()
{
setVisible (true);
}
/**
* Makes this component visible or invisible.
*
* @param visible true to make this component visible,
* false to make it invisible.
*
* @deprecated Deprecated in favor of setVisible().
*/
public void show(boolean b)
{
setVisible (b);
}
/**
* Hides this component so that it is no longer shown on the screen.
*
* @deprecated Deprecated in favor of setVisible().
*/
public void hide()
{
setVisible (false);
}
/**
* Returns this component's foreground color.
*
* @return This component's foreground color.
*/
public Color getForeground()
{
if (foreground != null)
return foreground;
if (parent != null)
return parent.getForeground();
return null;
}
/**
* Sets this component's foreground color to the specified color.
*
* @param foreground_color The new foreground color.
*/
public void setForeground(Color c)
{
if (peer != null)
peer.setForeground(c);
this.foreground = c;
}
/**
* Returns this component's background color.
*
* @return the background color of the component. null may be
* returned instead of the actual background color, if this
* method is called before the component is added to the
* component hierarchy.
*/
public Color getBackground()
{
if (background != null)
return background;
if (parent != null)
return parent.getBackground();
return null;
}
/**
* Sets this component's background color to the specified color.
*
* @param background_color The new background color
*/
public void setBackground(Color c)
{
if (peer != null)
peer.setBackground(c);
this.background = c;
}
/**
* Returns the font in use for this component.
*
* @return The font for this component.
*/
public Font getFont()
{
if (font != null)
return font;
if (parent != null)
return parent.getFont();
return null;
}
/**
* Sets the font for this component to the specified font.
*
* @param font The new font for this component.
*/
public void setFont(Font f)
{
if (peer != null)
peer.setFont(f);
this.font = f;
}
/**
* Returns the locale for this component. If this component does not
* have a locale, the locale of the parent component is returned. If the
* component has no parent, the system default locale is returned.
*
* @return The locale for this component.
*/
public Locale getLocale() throws IllegalComponentStateException
{
if (locale != null)
return locale;
if (parent == null)
throw new IllegalComponentStateException
("Component has no parent: Can not determine Locale");
return parent.getLocale();
}
/**
* Sets the locale for this component to the specified locale.
*
* @param locale The new locale for this component.
*/
public void setLocale(Locale l)
{
this.locale = l;
/* new writing/layout direction perhaps, or make more/less
room for localized text labels */
invalidate();
}
/**
* Returns the color model of the device this componet is displayed on.
*
* @return This object's color model.
*/
public ColorModel getColorModel()
{
GraphicsConfiguration config = getGraphicsConfiguration();
if (config != null)
return config.getColorModel();
return getToolkit().getColorModel();
}
/**
* Returns the location of this component's top left corner relative to
* its parent component.
*
* @return The location of this component.
*/
public Point getLocation()
{
return new Point(x, y);
}
/**
* Returns the location of this component's top left corner in screen
* coordinates.
*
* @return The location of this component in screen coordinates.
*/
public Point getLocationOnScreen()
{
if (! isShowing ())
throw new IllegalComponentStateException ("component not showing");
// We know peer != null here.
return peer.getLocationOnScreen ();
}
/**
* Returns the location of this component's top left corner relative to
* its parent component.
*
* @return The location of this component.
*
* @deprecated This method is deprecated in favor of
* getLocation().
*/
public Point location()
{
return getLocation();
}
/**
* Moves this component to the specified location. The coordinates are
* the new upper left corner of this component.
*
* @param x The new X coordinate of this component.
* @param y The new Y coordinate of this component.
*/
public void setLocation (int x, int y)
{
if ((this.x == x) && (this.y == y))
return;
invalidate();
this.x = x;
this.y = y;
if (peer != null)
peer.setBounds(x, y, width, height);
}
/**
* Moves this component to the specified location. The coordinates are
* the new upper left corner of this component.
*
* @param x The new X coordinate of this component.
* @param y The new Y coordinate of this component.
*
* @deprecated Deprecated in favor for setLocation.
*/
public void move(int x, int y)
{
setLocation(x,y);
}
/**
* Moves this component to the specified location. The coordinates are
* the new upper left corner of this component.
*
* @param p New coordinates for this component.
*/
public void setLocation(Point p)
{
setLocation(p.x, p.y);
}
/**
* Returns the size of this object.
*
* @return The size of this object.
*/
public Dimension getSize()
{
return new Dimension(width, height);
}
/**
* Returns the size of this object.
*
* @return The size of this object.
*
* @deprecated This method is deprecated in favor of getSize.
*/
public Dimension size()
{
return getSize();
}
/**
* Sets the size of this component to the specified width and height.
*
* @param width The new width of this component.
* @param height The new height of this component.
*/
public void setSize(int width, int height)
{
if ((this.width == width) && (this.height == height))
return;
invalidate();
this.width = width;
this.height = height;
if (peer != null)
peer.setBounds(x, y, width, height);
}
/**
* Sets the size of this component to the specified value.
*
* @param width The new width of the component.
* @param height The new height of the component.
*
* @deprecated This method is deprecated in favor of setSize.
*/
public void resize(int width, int height)
{
setSize(width, height);
}
/**
* Sets the size of this component to the specified value.
*
* @param dim The new size of this component.
*/
public void setSize(Dimension d)
{
setSize(d.width, d.height);
}
/**
* Sets the size of this component to the specified value.
*
* @param dim The new size of this component.
*
* @deprecated This method is deprecated in favor of setSize.
*/
public void resize(Dimension d)
{
setSize(d.width, d.height);
}
/**
* Returns a bounding rectangle for this component. Note that the
* returned rectange is relative to this component's parent, not to
* the screen.
*
* @return The bounding rectangle for this component.
*/
public Rectangle getBounds()
{
return new Rectangle (x, y, width, height);
}
/**
* Returns a bounding rectangle for this component. Note that the
* returned rectange is relative to this component's parent, not to
* the screen.
*
* @return The bounding rectangle for this component.
*
* @deprecated Deprecated in favor of getBounds().
*/
public Rectangle bounds()
{
return getBounds();
}
/**
* Sets the bounding rectangle for this component to the specified
* values. Note that these coordinates are relative to the parent,
* not to the screen.
*
* @param x The X coordinate of the upper left corner of the rectangle.
* @param y The Y coordinate of the upper left corner of the rectangle.
* @param width The width of the rectangle.
* @param height The height of the rectangle.
*/
public void setBounds(int x, int y, int w, int h)
{
if (this.x == x
&& this.y == y
&& this.width == w
&& this.height == h)
return;
invalidate();
this.x = x;
this.y = y;
this.width = w;
this.height = h;
if (peer != null)
peer.setBounds(x, y, w, h);
}
/**
* Sets the bounding rectangle for this component to the specified
* values. Note that these coordinates are relative to the parent,
* not to the screen.
*
* @param x The X coordinate of the upper left corner of the rectangle.
* @param y The Y coordinate of the upper left corner of the rectangle.
* @param width The width of the rectangle.
* @param height The height of the rectangle.
*
* @deprecated This method is deprecated in favor of
* setBounds(int, int, int, int).
*/
public void reshape(int x, int y, int width, int height)
{
setBounds(x, y, width, height);
}
/**
* Sets the bounding rectangle for this component to the specified
* rectangle. Note that these coordinates are relative to the parent,
* not to the screen.
*
* @param bounding_rectangle The new bounding rectangle.
*/
public void setBounds(Rectangle r)
{
setBounds(r.x, r.y, r.width, r.height);
}
/** @since 1.2 */
public int getX()
{
return x;
}
/** @since 1.2 */
public int getY()
{
return y;
}
/** @since 1.2 */
public int getWidth()
{
return width;
}
/** @since 1.2 */
public int getHeight()
{
return height;
}
public Rectangle getBounds(Rectangle r)
{
r.x = this.x;
r.y = this.y;
r.width = this.width;
r.height = this.height;
return r;
}
public Dimension getSize(Dimension d)
{
d.width = this.width;
d.height = this.height;
return d;
}
public Point getLocation(Point p)
{
p.x = x;
p.y = y;
return p;
}
/** @since 1.2 */
public boolean isOpaque()
{
return !isLightweight();
}
/**
* Return whether the component is lightweight.
*
* @return true if component has a peer and and the peer is lightweight.
*
* @since 1.2
*/
public boolean isLightweight()
{
return (peer != null) && (peer instanceof LightweightPeer);
}
/**
* Returns the component's preferred size.
*
* @return The component's preferred size.
*/
public Dimension getPreferredSize()
{
if (peer == null)
return new Dimension(width, height);
else
return peer.getPreferredSize();
}
/**
* Returns the component's preferred size.
*
* @return The component's preferred size.
*
* @deprecated Deprecated in favor of getPreferredSize().
*/
public Dimension preferredSize()
{
return getPreferredSize();
}
/**
* Returns the component's minimum size.
*
* @return The component's minimum size.
*/
public Dimension getMinimumSize()
{
if (peer == null)
return new Dimension(width, height);
else
return peer.getMinimumSize();
}
/**
* Returns the component's minimum size.
*
* @return The component's minimum size.
*
* @deprecated Deprecated in favor of getMinimumSize()
*/
public Dimension minimumSize()
{
return getMinimumSize();
}
/**
* Returns the component's maximum size.
*
* @return The component's maximum size.
*/
public Dimension getMaximumSize()
{
return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
}
/**
* Returns the preferred horizontal alignment of this component. The
* value returned will be one of the constants defined in this class.
*
* @return The preferred horizontal alignment of this component.
*/
public float getAlignmentX()
{
return CENTER_ALIGNMENT;
}
/**
* Returns the preferred vertical alignment of this component. The
* value returned will be one of the constants defined in this class.
*
* @return The preferred vertical alignment of this component.
*/
public float getAlignmentY()
{
return CENTER_ALIGNMENT;
}
/**
* Calls the layout manager to re-layout the component. This is called
* during validation of a container in most cases.
*/
public void doLayout()
{
// nothing to do unless we're a container
}
/**
* Calls the layout manager to re-layout the component. This is called
* during validation of a container in most cases.
*
* @deprecated This method is deprecated in favor of doLayout().
*/
public void layout()
{
doLayout();
}
/**
* Called to ensure that the layout for this component is valid.
*/
public void validate()
{
valid = true;
}
/**
* Invalidates this component and all of its parent components. This will
* cause them to have their layout redone.
*/
public void invalidate()
{
valid = false;
if ((parent != null) && parent.valid)
parent.invalidate ();
}
/**
* Returns a graphics object for this component. Returns null
* if this component is not currently displayed on the screen.
*
* @return A graphics object for this component.
*/
public Graphics getGraphics()
{
if (peer != null)
{
Graphics gfx = peer.getGraphics();
if (gfx != null)
return gfx;
// create graphics for lightweight:
Container parent = getParent();
if (parent != null)
{
gfx = parent.getGraphics();
Rectangle bounds = getBounds();
gfx.setClip(bounds);
gfx.translate(bounds.x, bounds.y);
return gfx;
}
}
return null;
}
/**
* Returns the font metrics for the specified font in this component.
*
* @param font The font to retrieve metrics for.
*
* @return The font metrics for the specified font.
*/
public FontMetrics getFontMetrics(Font font)
{
if (peer == null)
return getToolkit().getFontMetrics(font);
return peer.getFontMetrics (font);
}
/**
* Sets the cursor for this component to the specified cursor.
*
* @param cursor The new cursor for this component.
*/
public void setCursor(Cursor cursor)
{
this.cursor = cursor;
if (peer != null)
peer.setCursor (cursor);
}
/**
* Returns the cursor for this component.
*
* @return The cursor for this component.
*/
public Cursor getCursor()
{
return this.cursor;
}
/**
* Paints this component on the screen. The clipping region in the
* graphics context will indicate the region that requires painting.
*
* @param graphics The graphics context for this paint job.
*/
public void paint(Graphics g)
{
}
/**
* Updates this component. This method fills the component
* with the background color, then sets the foreground color of the
* specified graphics context to the foreground color of this component
* and calls the paint() method.
* // FIXME: What are the coords relative to?
*
* @param graphics The graphics context for this update.
*/
public void update(Graphics g)
{
paint(g);
}
/**
* Paints this entire component, including any sub-components.
*
* @param graphics The graphics context for this paint job.
*/
public void paintAll(Graphics g)
{
if (!visible)
return;
if (peer != null)
peer.paint(g);
paint(g);
}
/**
* Repaint this entire component. The update() method
* on this component will be called as soon as possible.
* // FIXME: What are the coords relative to?
*/
public void repaint()
{
repaint(0, 0, 0, getWidth(), getHeight());
}
/**
* Repaint this entire component. The update() method
* on this component will be called in approximate the specified number
* of milliseconds.
* // FIXME: What are the coords relative to?
*
* @param tm The number of milliseconds before this component should
* be repainted.
*/
public void repaint(long tm)
{
repaint(tm, 0, 0, getWidth(), getHeight());
}
/**
* Repaints the specified rectangular region within this component.
* This update method on this component will be called as
* soon as possible.
* // FIXME: What are the coords relative to?
*
* @param x The X coordinate of the upper left of the region to repaint
* @param y The Y coordinate of the upper left of the region to repaint
* @param width The width of the region to repaint.
* @param height The height of the region to repaint.
*/
public void repaint(int x, int y, int width, int height)
{
repaint(0, x, y, width, height);
}
/**
* Repaints the specified rectangular region within this component.
* This update method on this component will be called in
* approximately the specified number of milliseconds.
* // FIXME: What are the coords relative to?
*
* @param tm The number of milliseconds before this component should
* be repainted.
* @param x The X coordinate of the upper left of the region to repaint
* @param y The Y coordinate of the upper left of the region to repaint
* @param width The width of the region to repaint.
* @param height The height of the region to repaint.
*/
public void repaint(long tm, int x, int y, int width, int height)
{
// Handle lightweight repainting by forwarding to native parent
if (isLightweight() && (parent != null))
{
if (parent != null)
parent.repaint(tm, x+getX(), y+getY(), width, height);
return;
}
if (peer != null)
peer.repaint(tm, x, y, width, height);
}
/**
* Prints this component. This method is
* provided so that printing can be done in a different manner from
* painting. However, the implementation in this class simply calls
* the paint() method.
*
* @param graphics The graphics context of the print device.
*/
public void print(Graphics g)
{
paint(g);
}
/**
* Prints this component, including all sub-components. This method is
* provided so that printing can be done in a different manner from
* painting. However, the implementation in this class simply calls
* the paintAll() method.
*
* @param graphics The graphics context of the print device.
*/
public void printAll(Graphics g)
{
paintAll(g);
}
/**
* Called when an image has changed so that this component is
* repainted.
*
* @param image The image that has been updated.
* @param flags Flags as specified in ImageObserver.
* @param x The X coordinate
* @param y The Y coordinate
* @param width The width
* @param height The height
*
* @return true if the image has been fully loaded,
* false otherwise.
*/
public boolean imageUpdate (Image img, int infoflags, int x, int y,
int w, int h)
{
// FIXME
return false;
}
/**
* Creates an image from the specified producer.
*
* @param producer The image procedure to create the image from.
*
* @return The resulting image.
*/
public Image createImage(ImageProducer producer)
{
return peer.createImage(producer);
}
/**
* Creates an image with the specified width and height for use in
* double buffering.
*
* @param width The width of the image.
* @param height The height of the image.
*
* @return The requested image.
*/
public Image createImage(int width, int height)
{
return getGraphicsConfiguration().createCompatibleImage(width, height);
}
/**
* Prepares the specified image for rendering on this component.
*
* @param image The image to prepare for rendering.
* @param observer The image observer to notify of the status of the
* image preparation.
*
* @return true if the image is already fully prepared
* for rendering, false otherwise.
*/
public boolean prepareImage(Image image, ImageObserver observer)
{
return prepareImage(image, image.getWidth(observer),
image.getHeight(observer), observer);
}
/**
* Prepares the specified image for rendering on this component at the
* specified scaled width and height
*
* @param image The image to prepare for rendering.
* @param width The scaled width of the image.
* @param height The scaled height of the image.
* @param observer The image observer to notify of the status of the
* image preparation.
*
* @return true if the image is already fully prepared
* for rendering, false otherwise.
*/
public boolean prepareImage(Image image, int width, int height,
ImageObserver observer)
{
return peer.prepareImage(image, width, height, observer);
}
/**
* Returns the status of the loading of the specified image. The value
* returned will be those flags defined in ImageObserver.
*
* @param image The image to check on.
* @param observer The observer to be notified as the image loading
* progresses.
*
* @return The image observer flags indicating the status of the load.
*/
public int checkImage(Image image, ImageObserver observer)
{
return checkImage(image, image.getWidth(observer),
image.getHeight(observer), observer);
}
/**
* Returns the status of the loading of the specified image. The value
* returned will be those flags defined in ImageObserver.
*
* @param image The image to check on.
* @param width The scaled image width.
* @param height The scaled image height.
* @param observer The observer to be notified as the image loading
* progresses.
*
* @return The image observer flags indicating the status of the load.
*/
public int checkImage (Image image, int width, int height,
ImageObserver observer)
{
if (peer != null)
return peer.checkImage (image, width, height, observer);
return getToolkit ().checkImage (image, width, height, observer);
}
/**
* Tests whether or not the specified point is contained within this
* component. Coordinates are relative to this component.
*
* @param x The X coordinate of the point to test.
* @param y The Y coordinate of the point to test.
*
* @return true if the point is within this component,
* false otherwise.
*/
public boolean contains (int x, int y)
{
return (x >= 0) && (y >= 0) && (x < width) && (y < height);
}
/**
* Tests whether or not the specified point is contained within this
* component. Coordinates are relative to this component.
*
* @param x The X coordinate of the point to test.
* @param y The Y coordinate of the point to test.
*
* @return true if the point is within this component,
* false otherwise.
*
* @deprecated Deprecated in favor of contains(int, int).
*/
public boolean inside(int x, int y)
{
return contains(x,y);
}
/**
* Tests whether or not the specified point is contained within this
* component. Coordinates are relative to this component.
*
* @param point The point to test.
*
* @return true if the point is within this component,
* false otherwise.
*/
public boolean contains(Point p)
{
return contains(p.x, p.y);
}
/**
* Returns the component occupying the position (x,y). This will either
* be this component, an immediate child component, or null
* if neither of the first two occupies the specified location.
*
* @param x The X coordinate to search for components at.
* @param y The Y coordinate to search for components at.
*
* @return The component at the specified location, for null
* if there is none.
*/
public Component getComponentAt(int x, int y)
{
if (contains(x,y))
return this;
return null;
}
/**
* Returns the component occupying the position (x,y). This will either
* be this component, an immediate child component, or null
* if neither of the first two occupies the specified location.
*
* @param x The X coordinate to search for components at.
* @param y The Y coordinate to search for components at.
*
* @return The component at the specified location, for null
* if there is none.
*
* @deprecated The method is deprecated in favor of
* getComponentAt().
*/
public Component locate(int x, int y)
{
return getComponentAt(x, y);
}
/**
* Returns the component occupying the specified point This will either
* be this component, an immediate child component, or null
* if neither of the first two occupies the specified location.
*
* @param point The point to search for components at.
*
* @return The component at the specified location, for null
* if there is none.
*/
public Component getComponentAt(Point p)
{
return getComponentAt(p.x, p.y);
}
/**
* AWT 1.0 event dispatcher.
*
* @deprecated Deprecated in favor of dispatchEvent().
*/
public void deliverEvent(Event e)
{
}
/** Forward AWT events to processEvent() if:
* - Events have been enabled for this type of event via enableEvents(),
* OR:
* - There is at least one registered listener for this type of event
*
* @param event The event to dispatch
*
* @specnote This method is final, but we need to be able to
* override it in order to handle other event types in our
* subclasses. The solution is to define a second, non-final
* method - dispatchEventImpl() - to actually do the work.
* Investigations with Thread.dumpStack() on the dispatch thread
* in JDK 1.3 show Sun's implementation is doing the same
* thing.
*/
public final void dispatchEvent(AWTEvent e)
{
dispatchEventImpl(e);
/* Give the peer a chance to handle the event. */
if (peer != null)
peer.handleEvent(e);
}
void dispatchEventImpl(AWTEvent e)
{
// Make use of event id's in order to avoid multiple instanceof tests.
if (e.id <= ComponentEvent.COMPONENT_LAST
&& e.id >= ComponentEvent.COMPONENT_FIRST
&& (componentListener != null
|| (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= KeyEvent.KEY_LAST
&& e.id >= KeyEvent.KEY_FIRST
&& (keyListener != null
|| (eventMask & AWTEvent.KEY_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= MouseEvent.MOUSE_LAST
&& e.id >= MouseEvent.MOUSE_FIRST
&& (mouseListener != null
|| mouseMotionListener != null
|| (eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= FocusEvent.FOCUS_LAST
&& e.id >= FocusEvent.FOCUS_FIRST
&& (focusListener != null
|| (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= InputMethodEvent.INPUT_METHOD_LAST
&& e.id >= InputMethodEvent.INPUT_METHOD_FIRST
&& (inputMethodListener != null
|| (eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= HierarchyEvent.HIERARCHY_LAST
&& e.id >= HierarchyEvent.HIERARCHY_FIRST
&& (hierarchyListener != null
|| hierarchyBoundsListener != null
|| (eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0))
processEvent(e);
else if (e.id <= PaintEvent.PAINT_LAST
&& e.id >= PaintEvent.PAINT_FIRST
&& (eventMask & AWTEvent.PAINT_EVENT_MASK) != 0)
processEvent(e);
}
/**
* AWT 1.0 event dispatcher.
*
* @deprecated Deprecated in favor of dispatchEvent().
*/
public boolean postEvent(Event e)
{
return false;
}
/**
* Adds the specified listener to this component.
*
* @param listener The new listener to add.
*/
public synchronized void addComponentListener(ComponentListener l)
{
componentListener = AWTEventMulticaster.add(componentListener, l);
if (componentListener != null)
enableEvents(AWTEvent.COMPONENT_EVENT_MASK);
}
/**
* Removes the specified listener from the component.
*
* @param listener The listener to remove.
*/
public synchronized void removeComponentListener(ComponentListener l)
{
componentListener = AWTEventMulticaster.remove(componentListener, l);
}
/**
* Adds the specified listener to this component.
*
* @param listener The new listener to add.
*/
public synchronized void addFocusListener(FocusListener l)
{
focusListener = AWTEventMulticaster.add(focusListener, l);
if (focusListener != null)
enableEvents(AWTEvent.FOCUS_EVENT_MASK);
}
/**
* Removes the specified listener from the component.
*
* @param listener The listener to remove.
*/
public synchronized void removeFocusListener(FocusListener l)
{
focusListener = AWTEventMulticaster.remove(focusListener, l);
}
/** @since 1.3 */
public synchronized void addHierarchyListener(HierarchyListener l)
{
hierarchyListener = AWTEventMulticaster.add(hierarchyListener, l);
if (hierarchyListener != null)
enableEvents(AWTEvent.HIERARCHY_EVENT_MASK);
}
/** @since 1.3 */
public synchronized void removeHierarchyListener(HierarchyListener l)
{
hierarchyListener = AWTEventMulticaster.remove(hierarchyListener, l);
}
/** @since 1.3 */
public synchronized void addHierarchyBoundsListener(HierarchyBoundsListener l)
{
hierarchyBoundsListener =
AWTEventMulticaster.add(hierarchyBoundsListener, l);
if (hierarchyBoundsListener != null)
enableEvents(AWTEvent.HIERARCHY_EVENT_MASK);
}
/** @since 1.3 */
public synchronized void
removeHierarchyBoundsListener(HierarchyBoundsListener l)
{
hierarchyBoundsListener =
AWTEventMulticaster.remove(hierarchyBoundsListener, l);
}
/**
* Adds the specified listener to this component.
*
* @param listener The new listener to add.
*/
public synchronized void addKeyListener(KeyListener l)
{
keyListener = AWTEventMulticaster.add(keyListener, l);
if (keyListener != null)
enableEvents(AWTEvent.KEY_EVENT_MASK);
}
/**
* Removes the specified listener from the component.
*
* @param listener The listener to remove.
*/
public synchronized void removeKeyListener(KeyListener l)
{
keyListener = AWTEventMulticaster.remove(keyListener, l);
}
/**
* Adds the specified listener to this component.
*
* @param listener The new listener to add.
*/
public synchronized void addMouseListener(MouseListener l)
{
mouseListener = AWTEventMulticaster.add(mouseListener, l);
if (mouseListener != null)
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
}
/**
* Removes the specified listener from the component.
*
* @param listener The listener to remove.
*/
public synchronized void removeMouseListener(MouseListener l)
{
mouseListener = AWTEventMulticaster.remove(mouseListener, l);
}
/**
* Adds the specified listener to this component.
*
* @param listener The new listener to add.
*/
public synchronized void addMouseMotionListener(MouseMotionListener l)
{
mouseMotionListener = AWTEventMulticaster.add(mouseMotionListener, l);
if (mouseMotionListener != null)
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
}
/**
* Removes the specified listener from the component.
*
* @param listener The listener to remove.
*/
public synchronized void removeMouseMotionListener(MouseMotionListener l)
{
mouseMotionListener = AWTEventMulticaster.remove(mouseMotionListener, l);
}
/** @since 1.2 */
public synchronized void addInputMethodListener(InputMethodListener l)
{
inputMethodListener = AWTEventMulticaster.add(inputMethodListener, l);
if (inputMethodListener != null)
enableEvents(AWTEvent.INPUT_METHOD_EVENT_MASK);
}
/** @since 1.2 */
public synchronized void removeInputMethodListener(InputMethodListener l)
{
inputMethodListener = AWTEventMulticaster.remove(inputMethodListener, l);
}
/** Returns all registered EventListers of the given listenerType.
* listenerType must be a subclass of EventListener, or a
* ClassClassException is thrown.
* @since 1.3
*/
public EventListener[] getListeners(Class listenerType)
{
if (listenerType == ComponentListener.class)
return getListenersImpl(listenerType, componentListener);
else if (listenerType == FocusListener.class)
return getListenersImpl(listenerType, focusListener);
else if (listenerType == KeyListener.class)
return getListenersImpl(listenerType, keyListener);
else if (listenerType == MouseListener.class)
return getListenersImpl(listenerType, mouseListener);
else if (listenerType == MouseMotionListener.class)
return getListenersImpl(listenerType, mouseMotionListener);
else if (listenerType == InputMethodListener.class)
return getListenersImpl(listenerType, inputMethodListener);
else if (listenerType == HierarchyListener.class)
return getListenersImpl(listenerType, hierarchyListener);
else if (listenerType == HierarchyBoundsListener.class)
return getListenersImpl(listenerType, hierarchyBoundsListener);
else
return getListenersImpl(listenerType, null);
}
static EventListener[] getListenersImpl(Class listenerType, EventListener el)
{
if (! EventListener.class.isAssignableFrom(listenerType))
throw new ClassCastException();
Vector v = new Vector();
if (el != null)
getListenerList (el, v);
EventListener[] el_a = (EventListener[]) Array.newInstance(listenerType,
v.size());
v.copyInto(el_a);
return el_a;
}
static void getListenerList(EventListener el, Vector v)
{
if (el instanceof AWTEventMulticaster)
{
AWTEventMulticaster mc = (AWTEventMulticaster) el;
getListenerList(mc.a, v);
getListenerList(mc.b, v);
}
else
v.addElement(el);
}
// The input method framework is currently unimplemented.
// /** @since 1.2 */
//
//public InputMethodRequests getInputMethodRequests()
//
// /** @since 1.2 */
//
// public InputContext getInputContext()
/**
* Enables the specified events. The events to enable are specified
* by OR-ing together the desired masks from AWTEvent.
*
* Events are enabled by default when a listener is attached to the
* component for that event type. This method can be used by subclasses
* to ensure the delivery of a specified event regardless of whether
* or not a listener is attached.
*
* @param enable_events The desired events to enable.
*/
protected final void enableEvents(long eventsToEnable)
{
eventMask |= eventsToEnable;
// TODO: Unlike Sun's implementation, I think we should try and
// enable/disable events at the peer (gtk/X) level. This will avoid
// clogging the event pipeline with useless mousemove events that
// we arn't interested in, etc. This will involve extending the peer
// interface, but thats okay because the peer interfaces have been
// deprecated for a long time, and no longer feature in the
// API specification at all.
if (isLightweight() && (parent != null))
parent.enableEvents(eventsToEnable);
else if (peer != null)
peer.setEventMask (eventMask);
}
/**
* Disables the specified events. The events to disable are specified
* by OR-ing together the desired masks from AWTEvent.
*
* @param disable_events The desired events to disable.
*/
protected final void disableEvents(long eventsToDisable)
{
eventMask &= ~eventsToDisable;
// forward new event mask to peer?
}
/** coalesceEvents is called by the EventQueue if two events with the same
* event id are queued. Returns a new combined event, or null if no
* combining is done.
*/
protected AWTEvent coalesceEvents(AWTEvent existingEvent, AWTEvent newEvent)
{
switch (existingEvent.id)
{
case MouseEvent.MOUSE_MOVED:
case MouseEvent.MOUSE_DRAGGED:
// Just drop the old (intermediate) event and return the new one.
return newEvent;
case PaintEvent.PAINT:
case PaintEvent.UPDATE:
return coalescePaintEvents((PaintEvent) existingEvent,
(PaintEvent) newEvent);
}
return null;
}
/**
* Coalesce paint events. Current heuristic is: Merge if the union of
* areas is less than twice that of the sum of the areas. The X server
* tend to create a lot of paint events that are adjacent but not
* overlapping.
*
*
* +------+ * | +-----+ ...will be merged * | | | * | | | * +------+ | * +-----+ * * +---------------+--+ * | | | ...will not be merged * +---------------+ | * | | * | | * | | * | | * | | * +--+ **/ private PaintEvent coalescePaintEvents(PaintEvent queuedEvent, PaintEvent newEvent) { Rectangle r1 = queuedEvent.getUpdateRect(); Rectangle r2 = newEvent.getUpdateRect(); Rectangle union = r1.union(r2); int r1a = r1.width * r1.height; int r2a = r2.width * r2.height; int ua = union.width * union.height; if (ua > (r1a+r2a)*2) return null; /* The 2 factor should maybe be reconsidered. Perhaps 3/2 would be better? */ newEvent.setUpdateRect(union); return newEvent; } /** * Processes the specified event. In this class, this method simply * calls one of the more specific event handlers. * * @param event The event to process. */ protected void processEvent(AWTEvent e) { /* Note: the order of these if statements are important. Subclasses must be checked first. Eg. MouseEvent must be checked before ComponentEvent, since a MouseEvent object is also an instance of a ComponentEvent. */ if (e instanceof FocusEvent) processFocusEvent((FocusEvent) e); else if (e instanceof PaintEvent) processPaintEvent((PaintEvent) e); else if (e instanceof MouseEvent) { if (e.id == MouseEvent.MOUSE_MOVED || e.id == MouseEvent.MOUSE_DRAGGED) processMouseMotionEvent((MouseEvent) e); else processMouseEvent((MouseEvent) e); } else if (e instanceof KeyEvent) processKeyEvent((KeyEvent) e); else if (e instanceof InputMethodEvent) processInputMethodEvent((InputMethodEvent) e); else if (e instanceof ComponentEvent) processComponentEvent((ComponentEvent) e); else if (e instanceof HierarchyEvent) { if (e.id == HierarchyEvent.HIERARCHY_CHANGED) processHierarchyEvent((HierarchyEvent) e); else processHierarchyBoundsEvent((HierarchyEvent) e); } } /** * Called when a component event is dispatched and component events are * enabled. This method passes the event along to any listeners * that are attached. * * @param event The
ComponentEvent to process.
*/
protected void processComponentEvent(ComponentEvent e)
{
if (componentListener == null)
return;
switch (e.id)
{
case ComponentEvent.COMPONENT_HIDDEN:
componentListener.componentHidden(e);
break;
case ComponentEvent.COMPONENT_MOVED:
componentListener.componentMoved(e);
break;
case ComponentEvent.COMPONENT_RESIZED:
componentListener.componentResized(e);
break;
case ComponentEvent.COMPONENT_SHOWN:
componentListener.componentShown(e);
break;
}
}
/**
* Called when a focus event is dispatched and component events are
* enabled. This method passes the event along to any listeners
* that are attached.
*
* @param event The FocusEvent to process.
*/
protected void processFocusEvent(FocusEvent e)
{
if (focusListener == null)
return;
switch (e.id)
{
case FocusEvent.FOCUS_GAINED:
focusListener.focusGained(e);
break;
case FocusEvent.FOCUS_LOST:
focusListener.focusLost(e);
break;
}
}
/**
* Called when a key event is dispatched and component events are
* enabled. This method passes the event along to any listeners
* that are attached.
*
* @param event The KeyEvent to process.
*/
protected void processKeyEvent(KeyEvent e)
{
if (keyListener == null)
return;
switch (e.id)
{
case KeyEvent.KEY_PRESSED:
keyListener.keyPressed(e);
break;
case KeyEvent.KEY_RELEASED:
keyListener.keyReleased(e);
break;
case KeyEvent.KEY_TYPED:
keyListener.keyTyped(e);
break;
}
}
/**
* Called when a regular mouse event is dispatched and component events are
* enabled. This method passes the event along to any listeners
* that are attached.
*
* @param event The MouseEvent to process.
*/
protected void processMouseEvent(MouseEvent e)
{
if (mouseListener == null)
return;
switch (e.id)
{
case MouseEvent.MOUSE_CLICKED:
mouseListener.mouseClicked(e);
break;
case MouseEvent.MOUSE_ENTERED:
mouseListener.mouseEntered(e);
break;
case MouseEvent.MOUSE_EXITED:
mouseListener.mouseExited(e);
break;
case MouseEvent.MOUSE_PRESSED:
mouseListener.mousePressed(e);
break;
case MouseEvent.MOUSE_RELEASED:
mouseListener.mouseReleased(e);
break;
}
}
/**
* Called when a mouse motion event is dispatched and component events are
* enabled. This method passes the event along to any listeners
* that are attached.
*
* @param event The MouseMotionEvent to process.
*/
protected void processMouseMotionEvent(MouseEvent e)
{
if (mouseMotionListener == null)
return;
switch (e.id)
{
case MouseEvent.MOUSE_DRAGGED:
mouseMotionListener.mouseDragged(e);
break;
case MouseEvent.MOUSE_MOVED:
mouseMotionListener.mouseMoved(e);
break;
}
}
/** @since 1.2 */
protected void processInputMethodEvent(InputMethodEvent e)
{
if (inputMethodListener == null)
return;
switch (e.id)
{
case InputMethodEvent.CARET_POSITION_CHANGED:
inputMethodListener.caretPositionChanged(e);
break;
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
inputMethodListener.inputMethodTextChanged(e);
break;
}
}
/** @since 1.3 */
protected void processHierarchyEvent(HierarchyEvent e)
{
if (hierarchyListener == null)
return;
if (e.id == HierarchyEvent.HIERARCHY_CHANGED)
hierarchyListener.hierarchyChanged(e);
}
/** @since 1.3 */
protected void processHierarchyBoundsEvent(HierarchyEvent e)
{
if (hierarchyBoundsListener == null)
return;
switch (e.id)
{
case HierarchyEvent.ANCESTOR_MOVED:
hierarchyBoundsListener.ancestorMoved(e);
break;
case HierarchyEvent.ANCESTOR_RESIZED:
hierarchyBoundsListener.ancestorResized(e);
break;
}
}
private void processPaintEvent(PaintEvent event)
{
// Can't do graphics without peer
if (peer == null)
return;
Graphics gfx = getGraphics();
Shape clip = event.getUpdateRect();
gfx.setClip(clip);
switch (event.id)
{
case PaintEvent.PAINT:
paint(gfx);
break;
case PaintEvent.UPDATE:
update(gfx);
break;
default:
throw new IllegalArgumentException("unknown paint event");
}
}
/**
* AWT 1.0 event processor.
*
* @deprecated Deprecated in favor of processEvent.
*/
public boolean handleEvent(Event evt)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseEvent().
*/
public boolean mouseDown(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseMotionEvent().
*/
public boolean mouseDrag(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseEvent().
*/
public boolean mouseUp(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseMotionEvent().
*/
public boolean mouseMove(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseEvent().
*/
public boolean mouseEnter(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 mouse event.
*
* @deprecated Deprecated in favor of processMouseEvent().
*/
public boolean mouseExit(Event evt, int x, int y)
{
return false;
}
/**
* AWT 1.0 key press event.
*
* @deprecated Deprecated in favor of processKeyEvent.
*/
public boolean keyDown(Event evt, int key)
{
return false;
}
/**
* AWT 1.0 key press event.
*
* @deprecated Deprecated in favor of processKeyEvent.
*/
public boolean keyUp(Event evt, int key)
{
return false;
}
/**
* AWT 1.0 action event processor.
*
* @deprecated Deprecated in favor of the ActionListener
* interface.
*/
public boolean action(Event evt, Object what)
{
return false;
}
/**
* Called to inform this component it has been added to a container.
* A native peer - if any - is created at this time. This method is
* called automatically by the AWT system and should not be called by
* user level code.
*/
public void addNotify()
{
if (peer == null)
peer = getToolkit().createComponent(this);
/* Now that all the children has gotten their peers, we should
have the event mask needed for this component and its
lightweight subcomponents. */
peer.setEventMask(eventMask);
/* We do not invalidate here, but rather leave that job up to
the peer. For efficiency, the peer can choose not to
invalidate if it is happy with the current dimensions,
etc. */
}
/**
* Called to inform this component is has been removed from its
* container. Its native peer - if any - is destroyed at this time.
* This method is called automatically by the AWT system and should
* not be called by user level code.
*/
public void removeNotify()
{
if (peer != null)
peer.dispose();
peer = null;
}
/** @deprecated */
public boolean gotFocus(Event evt, Object what)
{
return false;
}
/** @deprecated */
public boolean lostFocus(Event evt, Object what)
{
return false;
}
/**
* Tests whether or not this component is in the group that can
* be traversed using the keyboard traversal mechanism (such as the TAB
* key).
*
* @return true if the component is traversed via the TAB
* key, false otherwise.
*/
public boolean isFocusTraversable()
{
return enabled && visible && (peer == null || peer.isFocusTraversable ());
}
/**
* Requests that this component be given focus. The gotFocus()
* method on this event will be called when and if this request was
* successful.
*/
public void requestFocus()
{
// If there's no peer then this component can't get the focus. We
// treat it as a silent rejection of the request.
if (peer != null)
peer.requestFocus ();
}
// This method is used to implement transferFocus().
// CHILD is the child making the request.
// This is overridden by Container; when called for an ordinary
// component there is no child and so we always return null.
Component findNextFocusComponent (Component child)
{
return null;
}
/**
* Transfers focus to the next component in the focus traversal order.
*/
public void transferFocus()
{
Component next;
if (parent == null)
next = findNextFocusComponent (null);
else
next = parent.findNextFocusComponent (this);
if (next != null && next != this)
next.requestFocus ();
}
/**
* AWT 1.0 focus event processor.
*
* @deprecated Deprecated in favor of transferFocus().
*/
public void nextFocus()
{
transferFocus();
}
/** @since 1.2 */
public boolean hasFocus()
{
return hasFocus;
}
/**
* Adds the specified popup menu to this component.
*
* @param menu The popup menu to be added.
*/
public synchronized void add(PopupMenu popup)
{
if (popups == null)
popups = new Vector();
popups.addElement(popup);
}
/**
* Removes the specified popup menu from this component.
*
* @param menu The popup menu to remove.
*/
public synchronized void remove(MenuComponent popup)
{
popups.removeElement(popup);
}
/**
* Returns a debugging string representing this component.
*
* @return A string representing this component.
*/
protected String paramString()
{
StringBuffer param = new StringBuffer();
String name = getName();
if (name != null)
{
param.append(name);
param.append(",");
}
param.append(width);
param.append("x");
param.append(height);
param.append("+");
param.append(x);
param.append("+");
param.append(y);
if (!isValid())
param.append(",invalid");
if (!isVisible())
param.append(",invisible");
if (!isEnabled())
param.append(",disabled");
if (!isOpaque())
param.append(",translucent");
if (isDoubleBuffered())
param.append(",doublebuffered");
return param.toString();
}
/**
* Returns a string representation of this component.
*
* @return A string representation of this component
*/
public String toString()
{
return this.getClass().getName() + "[" + paramString() + "]";
}
/**
* Prints a listing of this component to the standard output.
*/
public void list ()
{
list (System.out, 0);
}
/**
* Prints a listing of this component to the specified print stream.
*
* @param stream The PrintStream to print to.
*/
public void list (PrintStream out)
{
list (out, 0);
}
/**
* Prints a listing of this component to the specified print stream,
* starting at the specified indentation point.
*
* @param stream The PrintStream to print to.
* @param indent The indentation point.
*/
public void list (PrintStream out, int indent)
{
for (int i = 0; i < indent; ++i)
out.print (' ');
out.println (toString ());
}
/**
* Prints a listing of this component to the specified print writer.
*
* @param writer The PrintWrinter to print to.
*/
public void list (PrintWriter out)
{
list (out, 0);
}
/**
* Prints a listing of this component to the specified print writer,
* starting at the specified indentation point.
*
* @param writer The PrintWriter to print to.
* @param indent The indentation point.
*/
public void list (PrintWriter out, int indent)
{
for (int i = 0; i < indent; ++i)
out.print (' ');
out.println (toString ());
}
public void addPropertyChangeListener(PropertyChangeListener listener)
{
if (changeSupport == null)
changeSupport = new PropertyChangeSupport(this);
changeSupport.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener)
{
if (changeSupport != null)
changeSupport.removePropertyChangeListener(listener);
}
public void addPropertyChangeListener(String propertyName,
PropertyChangeListener listener)
{
if (changeSupport == null)
changeSupport = new PropertyChangeSupport(this);
changeSupport.addPropertyChangeListener(propertyName, listener);
}
public void removePropertyChangeListener(String propertyName,
PropertyChangeListener listener)
{
if (changeSupport != null)
changeSupport.removePropertyChangeListener(propertyName, listener);
}
protected void firePropertyChange(String propertyName, Object oldValue,
Object newValue)
{
if (changeSupport != null)
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
}
public void setComponentOrientation(ComponentOrientation o)
{
orientation = o;
}
public ComponentOrientation getComponentOrientation()
{
return orientation;
}
/*
public AccessibleContext getAccessibleContext()
{
return accessibleContext;
}
*/
/**
* AWT 1.0 focus event processor.
*
* @deprecated Deprecated in favor of processFocusEvent.
public boolean
gotFocus(Event event, Object what)
{
return(true);
}
*/
/**
* AWT 1.0 focus event processor.
*
* @deprecated Deprecated in favor of processFocusEvent.
public boolean
lostFocus(Event event, Object what)
{
return(true);
}
*/
}