public OrderChanger(final Indexed container, final Object itemId) {
HorizontalLayout layout = new HorizontalLayout();
layout.addComponent(up);
up.setIcon(new ThemeResource("../runo/icons/32/arrow-up.png"));
up.addStyleName(BaseTheme.BUTTON_LINK);
up.addListener(
new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
int newIndex = container.indexOfId(itemId) - 1;
container.removeItem(itemId);
container.addItemAt(newIndex, itemId);
up.setEnabled(newIndex > 0);
}
});
up.setEnabled(container.indexOfId(itemId) > 0);
layout.addComponent(down);
down.setIcon(new ThemeResource("../runo/icons/32/arrow-down.png"));
down.addStyleName(BaseTheme.BUTTON_LINK);
down.addListener(
new ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
int newIndex = container.indexOfId(itemId) + 1;
container.removeItem(itemId);
container.addItemAt(newIndex, itemId);
down.setEnabled(newIndex < container.size() - 1);
}
});
down.setEnabled(container.indexOfId(itemId) < container.size() - 1);
setCompositionRoot(layout);
}
/*
* (non-Javadoc)
*
* @see
* com.vaadin.addon.calendar.event.CalendarEventProvider#getEvents(java.
* util.Date, java.util.Date)
*/
@Override
public List<CalendarEvent> getEvents(Date startDate, Date endDate) {
eventCache.clear();
int[] rangeIndexes = getFirstAndLastEventIndex(startDate, endDate);
for (int i = rangeIndexes[0]; i <= rangeIndexes[1] && i < container.size(); i++) {
eventCache.add(getEvent(i));
}
return Collections.unmodifiableList(eventCache);
}
/**
* Get the first event for a date
*
* @param date The date to search for, NUll returns first event in container
* @return Returns an array where the first item is the start index and the second item is the end
* item
*/
private int[] getFirstAndLastEventIndex(Date start, Date end) {
int startIndex = 0;
int size = container.size();
assert size >= 0;
int endIndex = size - 1;
if (start != null) {
/*
* Iterating from the start of the container, if range is in the end
* of the container then this will be slow TODO This could be
* improved by using some sort of divide and conquer algorithm
*/
while (startIndex < size) {
Object id = container.getIdByIndex(startIndex);
Item item = container.getItem(id);
Date d = (Date) item.getItemProperty(startDateProperty).getValue();
if (d.compareTo(start) >= 0) {
break;
}
startIndex++;
}
}
if (end != null) {
/*
* Iterate from the start index until range ends
*/
endIndex = startIndex;
while (endIndex < size - 1) {
Object id = container.getIdByIndex(endIndex);
Item item = container.getItem(id);
Date d = (Date) item.getItemProperty(endDateProperty).getValue();
if (d == null) {
// No end date present, use start date
d = (Date) item.getItemProperty(startDateProperty).getValue();
}
if (d.compareTo(end) >= 0) {
endIndex--;
break;
}
endIndex++;
}
}
return new int[] {startIndex, endIndex};
}