/**
* Add a binding in the BindingNode of the specified path.
*
* @param path the path of the specified BindingNode in the tree.
* @param binding the binding to be added to the specified BindingNode.
* @param varnameSet set with all _var names
*/
public void addBinding(String path, Binding binding, Set varnameSet) {
final List nodeids = DataBinder.parseExpression(path, ".");
if (nodeids.size() <= 0) {
throw new UiException("Incorrect bean expression: " + path);
}
boolean var = varnameSet.contains(nodeids.get(0));
BindingNode currentNode = this;
for (final Iterator it = nodeids.iterator(); it.hasNext(); ) {
final String nodeid = (String) it.next();
if (nodeid == null) {
throw new UiException("Incorrect bean expression: " + path);
}
BindingNode kidNode = currentNode.getKidNode(nodeid);
if (kidNode == null) { // if not found, then add one
if ("/".equals(currentNode._path)) {
kidNode = new BindingNode(nodeid, var, nodeid, true);
} else {
kidNode = new BindingNode(currentNode._path + "." + nodeid, var, nodeid, false);
}
currentNode.addKidNode(nodeid, kidNode);
} else {
var = var || kidNode._var;
}
currentNode = kidNode;
}
if (currentNode == this) {
throw new UiException("Incorrect bean expression: " + path);
}
currentNode.addBinding(binding);
if ("_var".equals(binding.getAttr())) {
currentNode._innerCollectionNode = DataBinder.hasTemplateOwner(binding.getComponent());
}
}
protected void handleEvent(Event event) {
for (BindingInfo bi : _dataTargets) {
final Component dt = bi.getComponent();
final Binding binding = bi.getBinding();
final DataBinder binder = binding.getBinder();
final Component dataTarget =
DataBinder.isTemplate(dt) ? DataBinder.lookupClone(event.getTarget(), dt) : dt;
if (dataTarget != null) {
binding.loadAttribute(dataTarget);
} else { // #bug 2897202
final List<Component> clones = scanClones(binder, dt);
for (final Component dataTarget1 : clones) {
binding.loadAttribute(dataTarget1);
}
}
}
}
protected void handleEvent(Event event) {
final Component target = event.getTarget();
final String triggerEventName = event.getName();
final List<BindingInfo> tmplist = new ArrayList<BindingInfo>(_dataTargets.size());
final List<Object> values = new LinkedList<Object>();
final List<Component> refs = new LinkedList<Component>();
final List<Binding> bindings = new LinkedList<Binding>();
// fire onSave for each binding
for (BindingInfo bi : _dataTargets) {
final Component dt = bi.getComponent();
final Binding binding = bi.getBinding();
final DataBinder binder = binding.getBinder();
final Component dataTarget =
DataBinder.isTemplate(dt) ? DataBinder.lookupClone(target, dt) : dt;
// bug# 1904389: NullPointerException if save-when in collection binding
// event.getTarget() might not inside the collection item (i.e. row, listitem, etc.)
// then binder.lookupClone() will return null dataTarget.
if (dataTarget != null) {
final Object[] vals = binding.getAttributeValues(dataTarget);
if (vals != null) {
tmplist.add(new BindingInfo(binding, dataTarget, vals));
values.add(vals[0]);
refs.add(dataTarget);
bindings.add(binding);
Events.sendEvent(
new BindingSaveEvent("onBindingSave", dataTarget, target, binding, vals[0]));
}
} else {
// bi.getComponent a template and a null dataTarget, meaning all collection items has to
// be handled. Search the owner to iterate all cloned items.
final List<Component> clones = scanClones(binder, dt);
for (Component dataTarget1 : clones) {
final Object[] vals = binding.getAttributeValues(dataTarget1);
if (vals != null) {
tmplist.add(new BindingInfo(binding, dataTarget1, vals));
values.add(vals[0]);
refs.add(dataTarget1);
bindings.add(binding);
Events.sendEvent(
new BindingSaveEvent("onBindingSave", dataTarget1, target, binding, vals[0]));
}
}
}
}
// fire onValidate for target component
Events.sendEvent(
new BindingValidateEvent("onBindingValidate", target, refs, bindings, values));
// saveAttribute for each binding
Component loadOnSaveProxy = null;
Component dataTarget = null;
DataBinder binder = null;
final List<Object> loadOnSaveInfos = new ArrayList<Object>(tmplist.size());
for (BindingInfo bi : tmplist) {
dataTarget = bi.getComponent();
final Binding binding = bi.getBinding();
if (binder == null) {
binder = binding.getBinder();
}
final Object[] vals = bi.getAttributeValues();
binding.saveAttributeValue(dataTarget, vals, loadOnSaveInfos, triggerEventName);
if (loadOnSaveProxy == null && dataTarget.isListenerAvailable("onLoadOnSave", true)) {
loadOnSaveProxy = dataTarget;
}
}
// bug #1895856 : data binding LoadOnSave works only on the last save-when component
// do loadOnSave
// if (dataTarget != null) {
// Events.postEvent(new Event("onLoadOnSave", dataTarget, loadOnSaveInfos));
// }
// (use first working dataTarget as proxy)
// feature#2990932, allow disable load-on-save mechanism
if (loadOnSaveProxy != null && binder.isLoadOnSave()) {
Events.postEvent(new Event("onLoadOnSave", loadOnSaveProxy, loadOnSaveInfos));
}
}
