/**
* Collapses an item.
*
* @param itemId the item id.
* @return True iff the collapse operation succeeded
*/
public boolean collapseItem(Object itemId) {
// Succeeds if the node is already collapsed
if (!isExpanded(itemId)) {
return true;
}
// Collapse
expanded.remove(itemId);
markAsDirty();
fireCollapseEvent(itemId);
return true;
}
/*
* (non-Javadoc)
*
* @see com.vaadin.ui.AbstractSelect#changeVariables(java.lang.Object,
* java.util.Map)
*/
@Override
public void changeVariables(Object source, Map<String, Object> variables) {
if (variables.containsKey("clickedKey")) {
String key = (String) variables.get("clickedKey");
Object id = itemIdMapper.get(key);
MouseEventDetails details =
MouseEventDetails.deSerialize((String) variables.get("clickEvent"));
Item item = getItem(id);
if (item != null) {
fireEvent(new ItemClickEvent(this, item, id, null, details));
}
}
if (!isSelectable() && variables.containsKey("selected")) {
// Not-selectable is a special case, AbstractSelect does not support
// TODO could be optimized.
variables = new HashMap<String, Object>(variables);
variables.remove("selected");
}
// Collapses the nodes
if (variables.containsKey("collapse")) {
final String[] keys = (String[]) variables.get("collapse");
for (int i = 0; i < keys.length; i++) {
final Object id = itemIdMapper.get(keys[i]);
if (id != null && isExpanded(id)) {
expanded.remove(id);
if (expandedItemId == id) {
expandedItemId = null;
}
fireCollapseEvent(id);
}
}
}
// Expands the nodes
if (variables.containsKey("expand")) {
boolean sendChildTree = false;
if (variables.containsKey("requestChildTree")) {
sendChildTree = true;
}
final String[] keys = (String[]) variables.get("expand");
for (int i = 0; i < keys.length; i++) {
final Object id = itemIdMapper.get(keys[i]);
if (id != null) {
expandItem(id, sendChildTree);
}
}
}
// AbstractSelect cannot handle multiselection so we handle
// it ourself
if (variables.containsKey("selected")
&& isMultiSelect()
&& multiSelectMode == MultiSelectMode.DEFAULT) {
handleSelectedItems(variables);
variables = new HashMap<String, Object>(variables);
variables.remove("selected");
}
// Selections are handled by the select component
super.changeVariables(source, variables);
// Actions
if (variables.containsKey("action")) {
final StringTokenizer st = new StringTokenizer((String) variables.get("action"), ",");
if (st.countTokens() == 2) {
final Object itemId = itemIdMapper.get(st.nextToken());
final Action action = actionMapper.get(st.nextToken());
if (action != null && (itemId == null || containsId(itemId)) && actionHandlers != null) {
for (Handler ah : actionHandlers) {
ah.handleAction(action, this, itemId);
}
}
}
}
}
