/**
* Centralized behavior instantiation <i>factory</i>: <b>instantiate all behaviors through this
* method</b> -- never use <code>new <var>behavior</var>(...)</code>.
*
* <ul>
* <li>remapping of names so can dynamically replace references in old hubs
* <li>centralized, correct instantiation and error handling
* </ul>
*
* {@link #restore(ESISNode, Map, Layer)} is called as part of instantiation, serving the place of
* arguments to a constructor. Logical names are normalized to all lowercase.
*/
public static Behavior getInstance(
String logicalname,
String behaviorclass,
ESISNode children,
Map<String, Object> attr,
Layer layer) {
assert logicalname != null
&& behaviorclass != null /*&& (layer!=null || xxx instanceof Layer)--topmost Layer*/
: "logical=" + logicalname + ", class=" + behaviorclass;
if (behaviorclass == null) return null; // if not testing (asserts on), keep on truckin'
if (multivalent.Meta.MONITOR /*false*/ && layer != null && layer.getBrowser() != null) {
Browser br = layer.getBrowser();
Graphics g = br.getGraphics(); // -- works, but not well
if (Behavior.rainbowi_ == Behavior.RAINBOW.length) Behavior.rainbowi_ = 0;
if (g != null) { // !Multivalent.standalone_ / embedded in Swing
g.setColor(Behavior.RAINBOW[Behavior.rainbowi_++]);
g.fillRect(0, 0, 10 /*rainbowi_*/, 10); // g.drawLine(0,10, 10,0);
}
/* g.setColor(Color.WHITE); g.fillRect(250,y_, 600,20);
g.setColor(Color.BLACK); rfont_.drawString(g, logicalname+" / "+behaviorclass, 300, y_+15);
y_ += 20; if (y_>20*10) y_ = 0; // set to 600 to conver page, but can only take in 10 lines at a time
*/
}
// long start = System.currentTimeMillis();
// String oname = logicalname;
logicalname = logicalname.toLowerCase();
// if (!(oname.equals(logicalname))) System.out.println("uppercase logical: "+oname); // warn of
// this inefficiency
Multivalent v = Multivalent.getInstance();
String bname = v.remapBehavior(behaviorclass);
Logger log = getLogger();
// getLogger().finest((/*"getInstance "+logicalname+"/"+behaviorclass+"=>"+bname);
if (Behavior.deadbe__.get(bname) == null)
try {
ClassLoader cl = /*v.getJARsClassLoader();*/ v.getClass().getClassLoader();
// assert cl == Behavior.class.getClassLoader(); // true now with new bootstrapping
Object bc = Class.forName(bname, true, cl).newInstance();
Behavior be = (Behavior) bc;
// be.setName(logicalname); // can't save uppercase
be.name_ = logicalname;
// be.name_ = (logicalname!=null? logicalname.toLowerCase(): null);
be.classname_ = behaviorclass;
// System.out.println(bname);
// see save() -- this still ok
// if (attr==null) {} else if (attr.get(ATTR_BEHAVIOR)!=null) { if (attr.size()==1)
// attr=null; else attr.remove(ATTR_BEHAVIOR); }
/*
long time = System.currentTimeMillis() - start;
if (false && g!=null/* && time > 0L* /) {
g.drawString(Long.toString(time), 250,15);
try { Thread.currentThread().sleep(2000L); } catch (Exception e) {}
}
*/
be.restore(
children, attr,
layer); // after added to layer, so can climb around and find things during restore
// log.finest("created "+bname);
// assert layer!=null || be instanceof Layer; // => temporary use of behavior that don't
// want to make logical part of document
return be;
} catch (ClassNotFoundException e) {
log.warning("couldn't find behavior " + bname + " -- ignored");
} catch (ClassCastException e) {
log.severe(
"class " + bname + " is not a behavior (does not subclass from Behavior) -- ignored");
} catch (InstantiationException e) {
log.severe("couldn't instantiate " + bname + " -- is it abstract?");
} catch (IllegalAccessException e) {
log.severe(bname + ": " + e + " -- perhaps class or constructor needs to be public");
} catch (Exception e) {
e.printStackTrace();
log.severe("unanticipated error while restoring " + logicalname + "/" + bname + ": " + e);
}
// error fall through
Behavior.deadbe__.put(bname, bname);
return null;
}
/** Convenience method to fetch Browser from Layer. */
public Browser getBrowser() {
Layer l = getLayer();
return l != null ? l.getBrowser() : null;
}