private WebkitRemoteObject getIndexAt(WebkitRemoteObject listObject, int offset)
throws IOException {
final WebkitRemoteObject[] results = new WebkitRemoteObject[1];
final CountDownLatch latch = new CountDownLatch(1);
getConnection()
.getRuntime()
.callFunctionOn(
listObject.getObjectId(),
"function(){return this[" + offset + "];}",
null,
false,
new WebkitCallback<WebkitRemoteObject>() {
@Override
public void handleResult(WebkitResult<WebkitRemoteObject> result) {
results[0] = result.getResult();
latch.countDown();
}
});
try {
latch.await(3, TimeUnit.SECONDS);
} catch (InterruptedException e) {
return null;
}
return results[0];
}
@Override
public IVariable getVariable(int offset) throws DebugException {
try {
WebkitRemoteObject result = getIndexAt(value, offset);
if (result == null) {
result = WebkitRemoteObject.createNull();
}
return new WebkitDebugVariable(
getTarget(), WebkitPropertyDescriptor.createIndexProperty(offset, result));
} catch (IOException e) {
throw createDebugException(e);
}
}