/**
* Adds values to list of {@link UserItem}s which are above the first shown {@link UserItem}.
*
* @param values list of {@link UserItem}s
*/
public void prependValues(List<UserItem> values) {
if (values.size() > 0) {
List<UserItem> newItems = new ArrayList<UserItem>();
Set<Key> newKeys = new HashSet<Key>();
for (UserItem ui : values) {
RowWidget rowWidget = rows.get(ui.getKey());
boolean add = true;
if (rowWidget != null) {
setValue(ui);
add = false;
}
if (add) {
if (headKeys.contains(ui.getKey())) {
add = false;
int index = head.indexOf(ui);
head.set(index, ui);
}
}
if (add) {
newItems.add(ui);
newKeys.add(ui.getKey());
}
}
if (!newItems.isEmpty()) {
head.addAll(0, newItems);
headKeys.addAll(newKeys);
NewDataEvent.fire(this, NewDataType.NEW_DATA_AVAILABLE);
}
}
}
/**
* Does the actual value setting.
*
* @param value new value to show
*/
private void doSetValue(UserItem value) {
RowWidget row = rows.get(value.getKey());
if (row != null) {
Item itemObject = row.getValue().getItemObject();
value.setItemObject(itemObject);
row.setValue(value);
}
}
/** Makes all pending {@link UserItem}s below the last one show. */
public void showTail() {
Set<Key> labels = new HashSet<Key>();
for (UserItem ui : tail) {
labels.addAll(ui.getLabels());
}
if (!hasAllLabels(labels)) {
Managers.LABELS_MANAGER.refresh(
new AsyncCallback<Void>() {
public void onSuccess(Void result) {
addTail();
}
public void onFailure(Throwable caught) {}
});
} else {
addTail();
}
}
/**
* Sets new value of row if the {@link UserItem} is already shown.
*
* @param value new value to show
*/
public void setValue(final UserItem value) {
if (!hasAllLabels(value.getLabels())) {
Managers.LABELS_MANAGER.refresh(
new AsyncCallback<Void>() {
public void onSuccess(Void result) {
doSetValue(value);
}
public void onFailure(Throwable caught) {}
});
} else {
doSetValue(value);
}
}