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-package gjt;
-
-import java.awt.Event;
-import java.awt.Graphics;
-
-/**
- * An ImageButtonController that causes its associated
- * ImageButton to "stick" when activated. If the ImageButton
- * is raised it depresses<b>[1]</b> upon a mouse down and stays
- * down upon a subsequent mouse up event. The same "sticky"
- * behaviour occurs when a depressed ImageButton encounters a
- * mouse down followed by a subsequent mouse up.<p>
- *
- * Note that false is returned from mouse event handlers;
- * therefore mouse events will be propagated to the
- * ImageButton's container. While this is not always
- * desirable, it was deemed a better default than swallowing
- * the event here. Subclasses may, of course, modify this
- * behavior.<p>
- *
- * <b>[1]</b> No psychiatric consultation is necessary.<p>
- *
- * @version 1.0, Apr 1 1996
- * @author David Geary
- * @see ImageButton
- * @see ImageButtonController
- * @see SpringyImageButtonController
- */
-public class StickyImageButtonController
- extends ImageButtonController {
- private boolean buttonUpOnLastMouseDown = true;
-
- public StickyImageButtonController(ImageButton ib) {
- super(ib);
- }
- public boolean mouseDown(Event event, int x, int y) {
- ImageButton button = getButton();
-
- if(event.modifiers == 0) {
- if(button.isRaised()) button.paintInset();
- else button.paintRaised();
-
- buttonUpOnLastMouseDown = getButton().isRaised();
- armButton(event);
- }
- return false;
- }
- public boolean mouseUp(Event event, int x, int y) {
- activateButton(event);
- return false;
- }
- public boolean mouseDrag(Event event, int x, int y) {
- ImageButton button = getButton();
-
- if(event.modifiers == 0) {
- if(button.isInside(x,y)) {
- if(buttonUpOnLastMouseDown) {
- if(button.isRaised() == false) {
- button.paintRaised();
- armButton(event);
- }
- }
- else {
- if(button.isRaised()) {
- button.paintInset();
- armButton(event);
- }
- }
- }
- else {
- if(buttonUpOnLastMouseDown) {
- if(button.isRaised()) {
- button.paintInset();
- disarmButton(event);
- }
- }
- else {
- if(button.isRaised() == false) {
- button.paintRaised();
- disarmButton(event);
- }
- }
- }
- }
- return false;
- }
-}