// scan up the component hierarchy until the real owner is found and collect all cloned
// components.
private static List<Component> scanClones(DataBinder binder, Component comp) {
if (DataBinder.isTemplate(comp)) {
final List<Component> owners =
scanClones(binder, binder.getCollectionOwner(comp)); // recursive
final List<Component> kidowners = new LinkedList<Component>();
for (Component owner : owners) {
final CollectionItem decor = binder.getCollectionItemByOwner(owner);
// backward compatible, CollectionItemEx.getItems() is faster
if (decor instanceof CollectionItemExt) {
final CollectionItemExt decorex = (CollectionItemExt) decor;
for (final Iterator iti = decorex.getItems(owner).iterator(); iti.hasNext(); ) {
final Component item = (Component) iti.next();
kidowners.add(DataBinder.lookupClone(item, comp));
}
} else {
try {
for (int j = 0; true; ++j) { // iterate until out of bound
final Component item = decor.getComponentAtIndexByOwner(owner, j);
kidowners.add(DataBinder.lookupClone(item, comp));
}
} catch (IndexOutOfBoundsException ex) {
// ignore, iterate until out of bound
}
}
}
return kidowners;
} else {
final List<Component> owners = new ArrayList<Component>();
owners.add(comp);
return owners;
}
}
/** Get converted value and original value of this Binding. */
private Object[] getAttributeValues(Component comp) {
if (!isSavable()
|| _attr.startsWith("_")
|| DataBinder.isTemplate(comp)
|| comp.getPage() == null) {
return null; // cannot save, a control attribute, or a detached component, skip!
}
Object rawval = null;
try {
rawval = Fields.get(comp, _attr);
} catch (NoSuchMethodException ex) {
// Bug #1813278, Annotations do not work with xhtml tags
if (comp instanceof DynamicPropertied) {
final DynamicPropertied dpcomp = (DynamicPropertied) comp;
if (dpcomp.hasDynamicProperty(_attr)) {
rawval = dpcomp.getDynamicProperty(_attr);
} else {
throw UiException.Aide.wrap(ex);
}
} else if (comp.getAttributes()
.containsKey(
_attr)) { // Feature #2855116. Get value from component custom-attribute(also a
// variable in ZK5).
rawval = comp.getAttribute(_attr);
} else {
throw UiException.Aide.wrap(ex);
}
}
try {
final Object val = (_converter == null) ? rawval : _converter.coerceToBean(rawval, comp);
return val == TypeConverter.IGNORE ? null : new Object[] {val, rawval};
} catch (ClassCastException ex) {
throw UiException.Aide.wrap(ex);
}
}
/**
* load bean value into the attribute of the specified component.
*
* @param comp the component.
* @param bean the bean value.
*/
public void loadAttribute(Component comp, Object bean) {
if (!isLoadable()
|| _attr.startsWith("_")
|| DataBinder.isTemplate(comp)
|| comp.getPage() == null) {
return; // cannot load, a control attribute, or a detached component, skip!
}
myLoadAttribute(comp, bean);
}
/**
* load bean value into the attribute of the specified component.
*
* @param comp the component.
*/
public void loadAttribute(Component comp) {
if (!isLoadable()
|| _attr.startsWith("_")
|| DataBinder.isTemplate(comp)
|| comp == null // bug #1941947 Cannot find associated CollectionItem
|| comp.getPage() == null) {
return; // cannot load, a control attribute, or a detached component, skip!
}
Object bean = _binder.getBeanAndRegisterBeanSameNodes(comp, _expression);
myLoadAttribute(comp, bean);
}
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));
}
}
