/**
* Returns the parent {@link Element} for this component, if there is one, else null. If the
* component's immediate parent is an {@link Element}, returns the parent, else, goes up in the
* hierarchy until it finds one. Returns null if none found.
*/
public Element getParentElement() {
AXIComponent parent = (AXIComponent) getParent();
if (parent == null) return null;
if (parent instanceof Element) return (Element) parent;
return parent.getParentElement();
}
/**
* Removing a content model is special. For example, if element shipTo and billTo are of type
* USAddress, and USAddress gets deleted, then delete the proxy children of shipTo and billTo and
* finally delete USAddress.
*/
private void onContentModelDeleted(ContentModel contentModel) {
List<AXIComponent> removeList = new ArrayList<AXIComponent>();
for (AXIComponent child : getChildren()) {
if (child.getContentModel() == contentModel) {
removeList.add(child);
}
}
for (AXIComponent child : removeList) {
child.getParent().removeChild(Util.getProperty(child), child);
}
}
/**
* Returns the content model, this AXI component belongs to. Returns null for a local component.
*/
public ContentModel getContentModel() {
if (getComponentType() == ComponentType.PROXY) {
return getOriginal().getContentModel();
}
if (this instanceof ContentModel) return (ContentModel) this;
AXIComponent parent = getParent();
if (parent == null || parent instanceof AXIDocument || parent instanceof Element) return null;
return parent.getContentModel();
}
/** Overwritten so that it can fire events to the proxies. */
public void removeChild(String property, AXIComponent child) {
if (getModel() != child.getModel()) return;
super.removeChild(property, child);
if (pcs != null) {
// fire event so that proxy children get deleted from their parents
pcs.firePropertyChange(PROP_CHILD_REMOVED, child, null);
// finally, remove all listeners from the shared child
child.removeAllListeners();
}
if (this instanceof AXIDocumentImpl) ((AXIDocumentImpl) this).removeFromCache(child);
}
/**
* Returns this component's index (relative or absolute) in the parent's children list. Returns -1
* if child or parent are not in model or the child is not found in the parent's children list.
*
* @param absolute - true, relative (to its type in parent) - false
*/
public int getIndex(boolean absolute) {
AXIComponent parent = getParent();
if (parent == null || !isInModel()) return -1;
List<AXIComponent> childs = Collections.emptyList();
if (absolute) childs = parent.getChildren();
else childs = parent.getChildren((Class<AXIComponent>) this.getClass());
for (int i = 0; i < childs.size(); i++) {
if (childs.get(i) == this) {
return i;
}
}
return -1;
}
/** Sets the shared component. */
protected void setSharedComponent(AXIComponent sharedComponent) {
this.sharedComponent = sharedComponent;
if (sharedComponent == null) {
return;
}
AXIModelImpl thisModel = (AXIModelImpl) getModel();
if (thisModel == sharedComponent.getModel()) {
sharedComponent.addListener(this);
return;
}
// keep listening to the other model
thisModel.listenToReferencedModel(sharedComponent.getModel());
}
/** Sets the type. */
public void setType(AXIType type) {
if (type instanceof Attribute) {
setRef((Attribute) type);
return;
}
int index = this.getIndex();
AXIComponent parent = getParent();
Attribute a = getModel().getComponentFactory().createAttribute();
a.setName(getReferent().getName());
parent.removeChild(this);
parent.insertAtIndex(Attribute.PROP_ATTRIBUTE, a, index);
a.setType(type);
}
/**
* Convenient method to remove a child. If the parent is a proxy, delegates to the shared
* component.
*/
public final void removeChild(AXIComponent child) {
if (child.getComponentType() == ComponentType.REFERENCE) {
removeChild(Util.getProperty(child), child);
return;
}
// proxy child delete from UI: delete original child
if (child.getComponentType() == ComponentType.PROXY && !getModel().inSync()) {
AXIComponent oChild = child.getOriginal();
oChild.getParent().removeChild(oChild);
return;
}
removeChild(Util.getProperty(child), child);
}
private void onChildAdded(PropertyChangeEvent evt) {
if (!isChildrenInitialized()) return;
AXIComponent parent = (AXIComponent) evt.getSource();
AXIComponent child = (AXIComponent) evt.getNewValue();
int index = -1;
for (int i = 0; i < parent.getChildren().size(); i++) {
if (parent.getChildren().get(i) == child) {
index = i;
break;
}
}
if (index == -1) return;
AXIComponentFactory factory = getModel().getComponentFactory();
AXIComponent proxy = factory.createProxy(child);
insertAtIndex(Util.getProperty(child), proxy, index);
}
/** Add a listener to the shared component. */
public void addListener(AXIComponent proxy) {
if (getModel() != proxy.getModel()) return;
if (pcs == null) pcs = new PropertyChangeSupport(this);
PropertyChangeListener l = getWeakListener(proxy, false);
if (l != null) pcs.addPropertyChangeListener(l);
}
/** Overwritten so that it can fire events to the proxies. */
public void insertAtIndex(String property, AXIComponent child, int index) {
if (getModel() != child.getModel()) return;
super.insertAtIndex(property, child, index);
if (pcs != null) pcs.firePropertyChange(PROP_CHILD_ADDED, null, child);
if (this instanceof AXIDocumentImpl) ((AXIDocumentImpl) this).addToCache(child);
}
/** Overwritten so that it can fire events to the proxies. */
protected void appendChild(String property, AXIComponent child) {
if (getModel() != child.getModel()) return;
super.appendChild(property, child);
if (pcs != null) pcs.firePropertyChange(PROP_CHILD_ADDED, null, child);
if (this instanceof AXIDocumentImpl) ((AXIDocumentImpl) this).addToCache(child);
}
private void onChildDeleted(PropertyChangeEvent evt) {
AXIComponent parent = (AXIComponent) evt.getSource();
AXIComponent child = (AXIComponent) evt.getOldValue();
if (child instanceof ContentModel) {
onContentModelDeleted((ContentModel) child);
return;
}
AXIComponent deletedChild = null;
for (AXIComponent c : getChildren()) {
if (c.getSharedComponent() == child) {
deletedChild = c;
break;
}
}
if (deletedChild == null) return;
removeChild(Util.getProperty(deletedChild), deletedChild);
}
private void populateChildElements(
List<AbstractElement> childrenElements, AXIComponent component) {
for (AXIComponent child : component.getChildren()) {
if (child instanceof ContentModel) continue;
if (child instanceof AbstractElement) {
childrenElements.add((AbstractElement) child);
continue;
}
populateChildElements(childrenElements, child);
}
}
/** The proxy component receives an event notification. */
public void propertyChange(PropertyChangeEvent evt) {
AXIComponent source = (AXIComponent) evt.getSource();
String property = evt.getPropertyName();
if (!isInModel()) {
// Ideally it shouldn't come here. Remove this as listener
// and make shared as null, so that it'll be GCed.
source.removeListener(this);
// setSharedComponent(null);
return;
}
// if(evt.getOldValue() == null && evt.getNewValue() != null) {
if (PROP_CHILD_ADDED.equals(property)) {
onChildAdded(evt);
return;
}
// if(evt.getOldValue() != null && evt.getNewValue() == null) {
if (PROP_CHILD_REMOVED.equals(property)) {
onChildDeleted(evt);
return;
}
firePropertyChangeEvent(evt.getPropertyName(), evt.getOldValue(), evt.getNewValue());
}
private PropertyChangeListener getWeakListener(AXIComponent proxy, boolean remove) {
if (listenerMap == null) {
listenerMap = new WeakHashMap<AXIComponent, PropertyChangeListener>();
}
if (remove) return listenerMap.remove(proxy);
if (proxy.getComponentType() != ComponentType.PROXY) {
Set<AXIComponent> keySet = listenerMap.keySet();
for (AXIComponent key : keySet) {
if (key.getPeer() == proxy.getPeer()) return null;
}
}
PropertyChangeListener listener = listenerMap.get(proxy);
if (listener == null) {
listener =
(PropertyChangeListener) WeakListeners.create(PropertyChangeListener.class, proxy, this);
listenerMap.put(proxy, listener);
return listener;
}
// if exists, return null.
return null;
}
public AXIComponent copy(AXIComponent parent) {
AXIComponentFactory f = parent.getModel().getComponentFactory();
return f.copy(this);
}
