--- /dev/null
+package javajs.async;
+
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.BufferedInputStream;
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.stream.Collectors;
+
+import javax.imageio.ImageIO;
+import javax.swing.Timer;
+
+/**
+ * A set of generally useful SwingJS-related methods. Includes:
+ *
+ * alternatives to using getCodeBase() for loading resources, due to issues in
+ * Eclipse setting that incorrectly (but no problem in JavaScript)
+ *
+ *
+ *
+ * @author hansonr
+ *
+ */
+public class SwingJSUtils {
+ /**
+ * Set the dimension for the applet prior to j2sApplet's call to
+ * run the applet. Must be used to create a static field:
+ *
+ * <code>
+ * private static Dimension dim =
+ * </code>
+ *
+ *
+ * Then, if it is desired also to have Java also set this, add
+ *
+ * if (dim != null) setSize(dim);
+ *
+ * to the applet's init() method.
+ *
+ * @param w
+ * @param h
+ * @return the Dimension
+ *
+ * @author hansonr
+ */
+ public static Dimension setDim(int w, int h) {
+ String baseURI = (/** @j2sNative document.body.baseURI || */
+ null);
+ boolean isTest = (baseURI == null || baseURI.indexOf("_applet.html") >= 0);
+ if (!isTest)
+ return null;
+ /**
+ * @j2sNative
+ *
+ * J2S.thisApplet.__Info.width = w; J2S.thisApplet.__Info.height = h;
+ */
+ return new Dimension(w, h);
+ }
+
+ /**
+ * Reliably load a resource of a specific type from the code directory
+ *
+ * adaptable - here we are returning an image or a string
+ *
+ * @param cl the classname of the object to return (Image.class,
+ * String.class) null for InputStream
+ * @param filename
+ * @return
+ *
+ * @author hansonr
+ */
+ public static Object getResource(Class<?> baseClass, String filename, Class<?> cl) {
+ System.out.println("mpUtils.SwingJSUtils.getResource " + baseClass.getCanonicalName() + " " + filename);
+ InputStream is = baseClass.getResourceAsStream(filename);
+ if (cl == Image.class) {
+ try {
+ return ImageIO.read(is);
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ } else if (cl == String.class) {
+ return new BufferedReader(new InputStreamReader(is)).lines().collect(Collectors.joining("\n"));
+ }
+ return is;
+ }
+
+ /**
+ * Pre-fetch images during the static entry of the class. This should provide
+ * plenty of clock ticks, since the file transfer is synchronous, and all we are
+ * waiting for is the DOM image object to initialize.
+ *
+ * @param cl
+ * @param images
+ * @param root
+ * @param nImages
+ * @param ext
+ */
+ public static void loadImagesStatic(Class<?> cl, Image[] images, String root, String ext, int nImages) {
+ for (int i = nImages; --i >= 0;) {
+
+ // Bild laden und beim MediaTracker registrieren
+ // MediaTracker ladekontrolle = new MediaTracker(this);
+
+ // BH SwingJS -- adding generally useful method for loading data
+ // avoiding the use of getCodeBase(), which for some reason does not work in
+ // Eclipse.
+
+ images[i] = (Image) getResource(cl, root + i + "." + ext, Image.class);
+// /**
+// * @j2sNative
+// * $("body").append(images[i]._imgNode);
+// *
+// */
+// ladekontrolle.addImage(scharf[i],i);
+ // Warten , bis Bild ganz geladen ist
+
+// try {ladekontrolle.waitForID(i);}
+// catch (InterruptedException e)
+// {}
+ }
+ }
+
+ /**
+ * Fill an array with images based on a String[] listing
+ * @param cl reference class
+ * @param root optional root path, ending in "/"
+ * @param names source file names
+ * @param images array to fill
+ */
+ public static void loadImagesStatic(Class<?> cl, String root, String[] names, Image[] images) {
+ for (int i = names.length; --i >= 0;) {
+ images[i] = (Image) getResource(cl, root + names[i], Image.class);
+ }
+ }
+
+ /**
+ * Eclipse-friendly image getting
+ *
+ * @param c
+ * @param fileName
+ * @return
+ */
+ public static Image getImage(Component c, String fileName) {
+ return getImage(c.getClass(), fileName);
+ }
+
+ /**
+ * Eclipse-friendly image getting
+ *
+ * @param c
+ * @param fileName
+ * @return
+ */
+ public static Image getImage(Class<?> c, String fileName) {
+ return (Image) getResource(c, fileName, Image.class);
+ }
+
+ /**
+ * Clear the component graphic. BH added this for JavaScript because changing
+ * the browser zoom can change the size of the canvas for unknown reasons.
+ *
+ * @param c
+ */
+ public static void clearComponent(Component c) {
+ Graphics gc = c.getGraphics();
+ gc.clearRect(0, 0, c.getWidth(), c.getHeight());
+ gc.dispose();
+ }
+
+
+ /**
+ * A simple interface to the machine loop, generally of the form
+ * <code>
+ * public boolean stateLoop() {
+ * while (stateHepler.isAlive()) {
+ * switch (stateHelper.getState()) {
+ * case STATE_XXX:
+ * ...
+ * return stateHelper.delayState(100,STATE_YYY);
+ * case STATE_YYY:
+ * ...
+ * stateHelper.setState(STATE_ZZZ);
+ * continue;
+ * case STATE_ZZZ:
+ * ...
+ * return stateHelper.delayAction(100, MY_ID, "myCommand", myListener, STATE_XXX); *
+ * case STATE_DONE:
+ * ...
+ * stateHelper.interrupt();
+ * return false;
+ * }
+ * return true;
+ * }
+ * return false;
+ * }
+ * </code>
+ * @author hansonr
+ *
+ */
+ public interface StateMachine {
+
+ public boolean stateLoop();
+
+ }
+ /**
+ * StateHelper is a class that facilitates moving from an asychronous multithreaded model to a state-oriented model of programming
+ * for SwingJS animations and other asynchronous business.
+ *
+ * @author hansonr
+ *
+ */
+ public static class StateHelper {
+
+ public static final int UNCHANGED = Integer.MIN_VALUE;
+
+ private StateMachine machine;
+ private int state;
+ private int level;
+
+ private boolean interrupted;
+
+
+ public StateHelper(StateMachine machine) {
+ this.machine = machine;
+ }
+
+ public void interrupt() {
+ interrupted = true;
+ }
+
+ public boolean isInterrupted() {
+ return interrupted;
+ }
+
+ public boolean isAlive() {
+ return !interrupted;
+ }
+
+ public void restart() {
+ interrupted = false;
+ }
+
+ public void setState(int state) {
+ this.state = this.stateNext = state;
+ }
+
+ public int getState() {
+ return state;
+ }
+
+ public void setLevel(int level) {
+ this.level = this.levelNext = level;
+ }
+
+ public int getLevel() {
+ return level;
+ }
+
+ public void setNextState(int next) {
+ stateNext = next;
+ }
+
+ public int getNextState() {
+ return stateNext;
+ }
+
+ public int getNextLevel() {
+ return levelNext;
+ }
+
+ public void setNextLevel(int next) {
+ levelNext = next;
+ }
+
+ /**
+ *
+ * NOTE: this method must remain private; it is accessed via p$1
+ *
+ * @return
+ */
+ private boolean nextState() {
+ return next(stateNext, levelNext);
+ }
+ /**
+ * Set the state and run machine.stateLoop().
+ *
+ * @param state something meaningful to the machine
+ *
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean next(int state) {
+ return next(state, 0);
+ }
+
+ /**
+ * Set the state and level, and then run machine.stateLoop(). Driven directly or via delayedState or delayedAction
+ *
+ * @param state something meaningful to the machine
+ * @param level something meaningful to the machine
+ *
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean next(int state, int level) {
+ return nextStatePriv(this, state, level);
+ }
+
+ private static boolean nextStatePriv(Object oThis, int state, int level) {
+ StateHelper me = (StateHelper) oThis;
+ if (me.interrupted)
+ return false;
+ if (level != UNCHANGED)
+ me.level = level;
+ if (state != UNCHANGED)
+ me.state = state;
+ return me.machine.stateLoop();
+ }
+
+ /**
+ * After the given number of milliseseconds, set the new state and run the machines stateLoop with unchanged level
+ *
+ * @param ms the number of milliseconds to delay; 0 to execute synchronously *
+ * @param stateNext the next state to run
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean delayedState(int ms, int stateNext) {
+ return delayedState(ms, stateNext, level);
+ }
+
+ private Timer stateTimer;
+
+ private int stateNext;
+ private int levelNext;
+
+ /**
+ * After the given number of milliseseconds, set the new state and level, and
+ * run the machines stateLoop
+ *
+ * @param ms the number of milliseconds to delay; 0 to execute
+ * synchronously *
+ * @param stateNext the next state
+ * @param levelNext the next level
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+
+ public boolean delayedState(int ms, int stateNext, int levelNext) {
+ if (interrupted)
+ return false;
+ if (ms == 0)
+ return next(stateNext, levelNext);
+ if (stateNext != UNCHANGED)
+ this.stateNext = stateNext;
+ if (levelNext != UNCHANGED)
+ this.levelNext = levelNext;
+
+ /**
+ * @j2sNative
+ * var me = this;
+ * setTimeout(function(){
+ * p$1.nextState.apply(me, []);
+ * },ms);
+ */
+ {
+ // Java only
+
+ if (stateTimer == null) {
+ stateTimer = new Timer(ms, new ActionListener() {
+ @Override
+ public void actionPerformed(ActionEvent e) {
+ nextState();
+ }
+
+ });
+ stateTimer.setRepeats(false);
+ stateTimer.start();
+ } else {
+ stateTimer.restart();
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Fire an actionPerformed event after a given number of milliseconds
+ *
+ * @param ms delay milliseconds. if 0, then this action will be called
+ * synchronously
+ * @param id id for this event, possibly ACTION_PERFORMED (1001), but not
+ * necessarily
+ * @param command key for ActionEvent.getCommand()
+ * @param listener ActionListener to be called.
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean delayedAction(int ms, int id, String command, ActionListener listener) {
+ return delayedAction(ms, id, command, listener, UNCHANGED, UNCHANGED);
+ }
+
+ /**
+ * Fire an actionPerformed event after a given number of milliseconds
+ *
+ * @param ms delay milliseconds. if 0, then this action will be called
+ * synchronously
+ * @param id id for this event, possibly ACTION_PERFORMED (1001), but not
+ * necessarily
+ * @param command key for ActionEvent.getCommand()
+ * @param listener ActionListener to be called.
+ *
+ * @param state the next state to go to after this listener is called; UNCHANGED to let the listener take care of this.
+ *
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean delayedAction(int ms, int id, String command, ActionListener listener, int state) {
+ return delayedAction(ms, id, command, listener, state, UNCHANGED);
+ }
+
+ /**
+ * Fire an actionPerformed event after a given number of milliseconds. Setting BOTH stateNext and levelNext to UNCHANGED (Integer.MIN_VALUE)
+ * allows the listener to handle continuing the loop.
+ *
+ * @param ms delay milliseconds. if 0, then this action will be called
+ * synchronously
+ * @param id id for this event, possibly ACTION_PERFORMED (1001), but not
+ * necessarily
+ * @param command key for ActionEvent.getCommand()
+ * @param listener ActionListener to be called.
+ * @param stateNext state to run after the event is processed by the listener, or UNCHANGED (Integer.MIN_VALUE) to allow listener to handle this.
+ * @param levelNext level to run after the event is processed by the listener, or UNCHANGED (Integer.MIN_VALUE) to allow listener to handle this.
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean delayedAction(int ms, int id, String command, ActionListener listener, int stateNext, int levelNext) {
+ if (interrupted)
+ return false;
+ ActionEvent event = new ActionEvent(this, id, command);
+ if (ms == 0) {
+ listener.actionPerformed(event);
+ return (stateNext == UNCHANGED && levelNext == UNCHANGED || nextStatePriv(this, stateNext == UNCHANGED ? state : stateNext, levelNext == UNCHANGED ? level : levelNext));
+ }
+
+ StateHelper me = this;
+
+ Timer timer = new Timer(ms, id == ActionEvent.ACTION_PERFORMED ? listener : new ActionListener() {
+ @Override
+ public void actionPerformed(ActionEvent e) {
+ if (!interrupted)
+ listener.actionPerformed(event);
+ if (!interrupted && (stateNext != UNCHANGED || levelNext != UNCHANGED))
+ nextStatePriv(me, stateNext == UNCHANGED ? state : stateNext, levelNext == UNCHANGED ? level : levelNext);
+ }
+
+ });
+ timer.setRepeats(false);
+ timer.start();
+ return true;
+ }
+
+ public static void delayedRun(int ms, Runnable runnable) {
+ new StateHelper(null).delayedRun(ms, runnable, UNCHANGED, UNCHANGED);
+ }
+
+
+ /**
+ * Fire an actionPerformed event after a given number of milliseconds. Setting
+ * BOTH stateNext and levelNext to UNCHANGED (Integer.MIN_VALUE) allows the
+ * listener to handle continuing the loop.
+ *
+ * @param ms delay milliseconds. if 0, then this action will be called
+ * synchronously
+ * @param id id for this event, possibly ACTION_PERFORMED (1001), but not
+ * necessarily
+ * @param command key for ActionEvent.getCommand()
+ * @param listener ActionListener to be called.
+ * @param stateNext state to run after the event is processed by the listener,
+ * or UNCHANGED (Integer.MIN_VALUE) to allow listener to handle
+ * this.
+ * @param levelNext level to run after the event is processed by the listener,
+ * or UNCHANGED (Integer.MIN_VALUE) to allow listener to handle
+ * this.
+ * @return not interrupted
+ *
+ * @author Bob Hanson hansonr@stolaf.edu
+ */
+ public boolean delayedRun(int ms, Runnable runnable, int stateNext, int levelNext) {
+ if (interrupted)
+ return false;
+ if (ms == 0) {
+ return (stateNext == UNCHANGED && levelNext == UNCHANGED || nextStateIfUnchanged(this, runnable,
+ stateNext == UNCHANGED ? state : stateNext, levelNext == UNCHANGED ? level : levelNext));
+ }
+ StateHelper me = this;
+ /**
+ * @j2sNative
+ *
+ * setTimeout(function() {
+ *
+ * me.nextStateIfUnchanged$O$O$I$I.apply(me, [me, runnable, stateNext, levelNext]);
+ *
+ * },ms);
+ */
+ {
+ Timer timer = new Timer(ms, new ActionListener() {
+ @Override
+ public void actionPerformed(ActionEvent e) {
+ nextStateIfUnchanged(me, runnable, stateNext, levelNext);
+ }
+
+ });
+ timer.setRepeats(false);
+ timer.start();
+ }
+ return true;
+ }
+
+ protected boolean nextStateIfUnchanged(Object oThis, Object runnable, int stateNext, int levelNext) {
+ StateHelper me = (StateHelper)(oThis);
+ if (!me.interrupted)
+ ((Runnable) runnable).run();
+ if (!me.interrupted && (stateNext != UNCHANGED || levelNext != UNCHANGED))
+ nextStatePriv(oThis, stateNext == UNCHANGED ? me.state : stateNext,
+ levelNext == UNCHANGED ? me.level : levelNext);
+ return true;
+ }
+
+ /**
+ * sleep and then execute the next state
+ * @param ms
+ */
+ public void sleep(int ms) {
+ int next = stateNext;
+ delayedState(ms, next);
+ }
+ }
+
+ /**
+ * open a "url-like" input stream
+ * @param base
+ * @param fileName
+ * @return
+ */
+ public static BufferedInputStream openStream(Class<?> base, String fileName) {
+ String s = (String) getResource(base, fileName, String.class);
+ return new BufferedInputStream(new ByteArrayInputStream(s.getBytes()));
+ }
+
+
+ public static class Performance {
+
+ public final static int TIME_RESET = 0;
+
+ public final static int TIME_MARK = 1;
+
+ public static final int TIME_SET = 2;
+
+ public static final int TIME_GET = 3;
+
+ public static long time, mark, set, duration;
+
+ /**
+ * typical usage:
+ *
+ * Performance.timeCheck(null, Platform.TIME_MARK);
+ *
+ * ...
+ *
+ * Performance.timeCheck("some message", Platform.TIME_MARK);
+ *
+ * reset...[set/mark]n...get (total time) (time spent between set and mark)
+ *
+ * set...get (total time) (time spent between set and get)
+ *
+ * long t0 = now(0); ........ ; dt = now(t0); (time since t0)e
+ *
+ * @param msg
+ * @param mode
+ */
+ public static void timeCheck(String msg, int mode) {
+ msg = timeCheckStr(msg, mode);
+ if (msg != null)
+ System.err.println(msg);
+ }
+
+ public static long now(long t) {
+ return System.currentTimeMillis() - t;
+ }
+
+ public static String timeCheckStr(String msg, int mode) {
+ long t = System.currentTimeMillis();
+ switch (mode) {
+ case TIME_RESET:
+ time = mark = t;
+ duration = set = 0;
+ if (msg != null) {
+ return ("Platform: timer reset\t\t\t" + msg);
+ }
+ break;
+ case TIME_SET:
+ if (time == 0)
+ time = t;
+ set = t;
+ break;
+ case TIME_MARK:
+ if (set > 0) {
+ // total time between set/mark points
+ duration += (t - set);
+ } else {
+ if (time == 0) {
+ time = mark = t;
+ }
+ if (msg != null) {
+ long m0 = mark;
+ mark = t;
+ return ("Platform: timer mark\t" + ((t - time) / 1000f) + "\t" + ((t - m0) / 1000f) + "\t"
+ + msg);
+ }
+ mark = t;
+ }
+ break;
+ case TIME_GET:
+ if (msg != null) {
+ if (mark < set)
+ duration = t - set;
+ return ("Platform: timer get\t" + ((t - time) / 1000f) + "\t" + ((duration) / 1000f) + "\t" + msg);
+ }
+ set = 0;
+ break;
+ }
+ return null;
+ }
+
+ }
+
+}
\ No newline at end of file
git://source.jalview.org / jalview.git / blobdiff