@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
eventList = EventFactory.generateDiverseEventList();
iterator = new EventIterator(eventList);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setMax(iterator.getSize() - 1);
myText = (TextView) findViewById(R.id.m_description);
myTitle = (TextView) findViewById(R.id.title);
displayEvent(iterator.current());
}
/**
* Get the next event in the sequence. This will never be an EventIterator.
*
* @return the next event, or null when the sequence is exhausted
* @throws org.orbeon.saxon.trans.XPathException if a dynamic evaluation error occurs
*/
public PullEvent next() throws XPathException {
if (eventStack.isEmpty()) {
return null;
}
EventIterator iter = (EventIterator) eventStack.peek();
PullEvent next = iter.next();
if (next == null) {
eventStack.pop();
return next();
} else if (next instanceof EventIterator) {
eventStack.push(next);
return next();
} else {
return next;
}
}
/**
* Factory method to create an iterator that flattens the sequence of PullEvents received from a
* base iterator, that is, it returns an EventIterator that will never return any nested
* iterators.
*
* @param base the base iterator. Any nested EventIterator returned by the base iterator will be
* flattened, recursively.
*/
public static EventIterator flatten(EventIterator base) {
if (base.isFlatSequence()) {
return base;
}
return new EventStackIterator(base);
}
public void updateProgressBar() {
if (progressBar.getMax() > (iterator.getSize() - 1)) {
progressBar.setMax(iterator.getSize() - 1);
}
progressBar.setProgress(iterator.getIndexNum());
}
public void displayEvent(Event event) {
String titleString = event.getEventName();
String displayString = event.toString();
myText.setText(displayString.toString() + iterator.getIndexNum());
myTitle.setText(titleString.toString());
}
public void updateDisplay() {
updateProgressBar();
displayEvent(iterator.current());
}
public void nextOnClick(View v) {
iterator.advance();
updateDisplay();
}
public void likeOnClick(View v) {
likedEventList.add(iterator.remove());
updateDisplay();
}
public void hateOnClick(View v) {
iterator.delete();
updateDisplay();
}