+++ /dev/null
-package javajs.util;
-
-import java.awt.Toolkit;
-import java.awt.event.InvocationEvent;
-
-//import javajs.J2SRequireImport;
-import javajs.api.JSFunction;
-
-
-/**
- * An abstract class that takes care of simple threading in Java or JavaScript.
- *
- * To use it, subclass it and complete the necessary methods.
- *
- *
- * There are three states: INIT, LOOP, and DONE.
- *
- * These states are passed into run1
- *
- *
- * @author Bob Hanson
- *
- */
-//@J2SRequireImport(swingjs.JSToolkit.class)
-public abstract class JSThread extends Thread {
-
- public static final int INIT = 0;
- public static final int LOOP = 1;
- public static final int DONE = 2;
-
- public static int threadCount = 0;
-
- protected boolean isJS = /** @j2sNative true || */false;
-
- public JSThread() {
- this(null, "JSThread-" + (++threadCount));
- }
-
- public JSThread(String name) {
- this(null, name);
- }
-
- public JSThread(ThreadGroup group, String name) {
- super(group, name);
- }
-
- @Override
- public void run() {
- run1(INIT);
- }
-
- @Override
- public synchronized void start() {
-
-
- /**
- * @j2sNative
- *
- * Clazz.load("swingjs.JSToolkit").dispatch$O$I$I(this, 1, 0);
- *
- */
- {
- super.start();
- }
-
- }
-
- /**
- * thread initialization
- *
- * @return false to exit thread before any looping
- */
- protected abstract boolean myInit();
-
- /**
- * check for continuing to loop
- *
- * @return true if we are to continue looping
- */
- protected abstract boolean isLooping();
-
- /**
- *
- * @return false to handle sleepAndReturn yourself
- */
- protected abstract boolean myLoop();
- /**
- * what to do when the DONE state is reached
- *
- */
- protected abstract void whenDone();
-
- /**
- *
- * @return the sleep time in milliseconds
- */
- protected abstract int getDelayMillis();
-
- /**
- * handle an exception -- state will be set to DONE no matter what you do here
- *
- * @param e
- */
- protected abstract void onException(Exception e);
-
- /**
- * anything you want done in try{}catch(}finally().
- * Note that this method is not fired if we are in JavaScript
- * mode and the normal return from sleepAndReturn() is taken.
- *
- */
- protected abstract void doFinally();
-
- /**
- * a generic method that loops until done, either in Java or JavaScript.
- *
- * In JavaScript it will reenter and continue at the appropriate spot.
- *
- * This method may be overridden if desired.
- *
- * @see org.uwi.SimThread
- *
- * @param state
- */
- protected void run1(int state) {
- boolean executeFinally = true;
- // called by thisThread.run();
- try {
- while (!interrupted()) {
- switch (state) {
- case INIT:
- if (!myInit())
- return;
- // initial code here
- state = LOOP;
- continue;
- case LOOP:
- // to stop looping, return false from isLooping()
- if (!isLooping()) {
- state = DONE;
- continue;
- }
- // To handle sleepAndReturn yourself, or to skip the
- // sleep when desired, return false from myLoop();
- // Note that doFinally must not be executed in this case.
- // This is because JavaScript will do a return here
- // for every loop, and Java will not.
- if (myLoop() && sleepAndReturn(getDelayMillis(), state)) {
- executeFinally = false;
- return;
- }
- continue;
- case DONE:
- whenDone();
- // whatever
- return;
- }
- }
- } catch (Exception e) {
- onException(e);
- state = DONE;
- } finally {
- if (executeFinally)
- doFinally();
- }
- // normal exit
- }
-
- /**
- *
- * @param r2
- * @param state
- * @return true if we should interrupt (i.e. JavaScript)
- * @throws InterruptedException
- */
- protected boolean sleepAndReturn(final int delay, final int state)
- throws InterruptedException {
- if (!isJS) {
- sleep(delay);
- return false;
- }
-
- // in JavaScript, we need to do this through the system event queue,
- // which in JSToolkit takes care of all the "thread" handling.
-
- final JSThread me = this;
- Runnable r = new Runnable() {
- @Override
- public void run() {
- me.run1(state);
- }
- };
- /**
- * @j2sNative
- *
- * setTimeout(
- * function() {
- * java.awt.Toolkit.getDefaultToolkit$().getSystemEventQueue$().postEvent$java_awt_AWTEvent(
- * Clazz.new_(java.awt.event.InvocationEvent.c$$O$Runnable,[me, r]))},
- * delay);
- *
- */
- {
- Toolkit.getDefaultToolkit().getSystemEventQueue()
- .postEvent(new InvocationEvent(me, r));
- }
- return true;
- }
-
-}
git://source.jalview.org / jalview.git / blobdiff