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Class awt.DisplayItem

java.lang.Object
   |
   +----browser.Observable
           |
           +----awt.DisplayItem

public class DisplayItem

extends Observable

implements Layoutable

See Also:

DisplayItemWindow

Version:

1.13 14 Mar 1995

Author:

Jonathan Payne

fgColor

height

parent

valid

Item is not valid if it has been resized.

width

x

y

DisplayItem()

DisplayItem(int, int, int, int)

containsPoint(int, int)

Return true if x,y are contained inside this DisplayItem.

deactivate()

Called when this item is no longer needed.

getChild(String)

getFGColor()

getPreferredSize()

gotFocus()

invalidate()

keyPressed(int)

layout()

lostFocus()

minDimension()

move(int, int)

paint(Window, int, int)

refresh()

requestUpdate()

reshape(int, int, int, int)

resize(int, int)

setColor(Color)

setParent(DisplayItemWindow)

toString()

trackEnter(Event)

Enter with mouse button already down.

trackExit(Event)

Exit with mouse button already down.

trackMotion(Event)

trackStart(Event)

trackStop(Event)

update(Window, int, int)

This is called when the display item needs updating.

validate()

  public DisplayItemWindow parent

  public int x

  public int y

  public int width

  public int height

  protected Color fgColor

  protected boolean valid

Item is not valid if it has been resized.

  public DisplayItem()

  public DisplayItem(int x,
                     int y,
                     int width,
                     int height)

  public void setParent(DisplayItemWindow p)

  public Dimension getPreferredSize()

  public Dimension minDimension()

  public void layout()

  public Color getFGColor()

  public String toString()

  public void move(int x,
                   int y)

  public void reshape(int x,
                      int y,
                      int width,
                      int height)

  public Layoutable getChild(String name)

  public void resize(int w,
                     int h)

  public void setColor(Color c)

  public void refresh()

  public boolean containsPoint(int x,
                               int y)

Return true if x,y are contained inside this DisplayItem. By default, this method will test x,y against the bounding box for this item.

deactivate

  public void deactivate()

Called when this item is no longer needed. This is used, for example, to cancel backgroud tasks associated with animations

invalidate

  public void invalidate()

  public void validate()

  public void paint(Window window,
                    int x,
                    int y)

  public void update(Window window,
                     int x,
                     int y)

This is called when the display item needs updating. The background is not cleared, so it is possible for the display item to do incremental updating with no flashing. By default, this clears the background and calls paint.

requestUpdate

  public void requestUpdate()

  public void trackStart(Event e)

  public void trackMotion(Event e)

  public void trackStop(Event e)

  public void trackEnter(Event e)

Enter with mouse button already down. Only possible if sticky tracking is turned off.

trackExit

  public void trackExit(Event e)

Exit with mouse button already down. Only possible if sticky tracking is turned off.

gotFocus

  public void gotFocus()

  public void lostFocus()

  public void keyPressed(int key)

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