// to write out
session.getService().runPendingAccessTasks(session);
ArrayList<ClientConnector> dirtyVisibleConnectors = ui
.getConnectorTracker().getDirtyVisibleConnectors();
LegacyCommunicationManager manager = session.getCommunicationManager();
// Paints components
ConnectorTracker uiConnectorTracker = ui.getConnectorTracker();
getLogger().log(Level.FINE, "* Creating response to client");
getLogger().log(
Level.FINE,
"Found " + dirtyVisibleConnectors.size()
+ " dirty connectors to paint");
for (ClientConnector connector : dirtyVisibleConnectors) {
boolean initialized = uiConnectorTracker
.isClientSideInitialized(connector);
connector.beforeClientResponse(!initialized);
}
uiConnectorTracker.setWritingResponse(true);
try {
writer.write("\"changes\" : ");
JsonPaintTarget paintTarget = new JsonPaintTarget(manager, writer,
!repaintAll);
new LegacyUidlWriter().write(ui, writer, paintTarget);
paintTarget.close();
writer.write(", "); // close changes
// send shared state to client
// for now, send the complete state of all modified and new
// components
// Ideally, all this would be sent before "changes", but that causes
// complications with legacy components that create sub-components
// in their paint phase. Nevertheless, this will be processed on the
// client after component creation but before legacy UIDL
// processing.
writer.write("\"state\":");
new SharedStateWriter().write(ui, writer);
writer.write(", "); // close states
// TODO This should be optimized. The type only needs to be
// sent once for each connector id + on refresh. Use the same cache
// as
// widget mapping
writer.write("\"types\":");
new ConnectorTypeWriter().write(ui, writer, paintTarget);
writer.write(", "); // close states
// Send update hierarchy information to the client.
// This could be optimized aswell to send only info if hierarchy has
// actually changed. Much like with the shared state. Note though
// that an empty hierarchy is information aswell (e.g. change from 1
// child to 0 children)
writer.write("\"hierarchy\":");
new ConnectorHierarchyWriter().write(ui, writer);
writer.write(", "); // close hierarchy
// send server to client RPC calls for components in the UI, in call
// order
// collect RPC calls from components in the UI in the order in
// which they were performed, remove the calls from components
writer.write("\"rpc\" : ");
new ClientRpcWriter().write(ui, writer);
writer.write(", "); // close rpc
uiConnectorTracker.markAllConnectorsClean();
writer.write("\"meta\" : ");
SystemMessages messages = ui.getSession().getService()
.getSystemMessages(ui.getLocale(), null);
// TODO hilightedConnector
new MetadataWriter().write(ui, writer, repaintAll, async, messages);
writer.write(", ");
writer.write("\"resources\" : ");
new ResourceWriter().write(ui, writer, paintTarget);
Collection<Class<? extends ClientConnector>> usedClientConnectors = paintTarget
.getUsedClientConnectors();
boolean typeMappingsOpen = false;
ClientCache clientCache = manager.getClientCache(ui);
List<Class<? extends ClientConnector>> newConnectorTypes = new ArrayList<Class<? extends ClientConnector>>();
for (Class<? extends ClientConnector> class1 : usedClientConnectors) {
if (clientCache.cache(class1)) {
// client does not know the mapping key for this type, send
// mapping to client
newConnectorTypes.add(class1);
if (!typeMappingsOpen) {
typeMappingsOpen = true;
writer.write(", \"typeMappings\" : { ");
} else {
writer.write(" , ");
}
String canonicalName = class1.getCanonicalName();
writer.write("\"");
writer.write(canonicalName);
writer.write("\" : ");
writer.write(manager.getTagForType(class1));
}
}
if (typeMappingsOpen) {
writer.write(" }");
}
// TODO PUSH Refactor to TypeInheritanceWriter or something
boolean typeInheritanceMapOpen = false;
if (typeMappingsOpen) {
// send the whole type inheritance map if any new mappings
for (Class<? extends ClientConnector> class1 : usedClientConnectors) {
if (!ClientConnector.class.isAssignableFrom(class1
.getSuperclass())) {
continue;
}
if (!typeInheritanceMapOpen) {
typeInheritanceMapOpen = true;
writer.write(", \"typeInheritanceMap\" : { ");
} else {
writer.write(" , ");
}
writer.write("\"");
writer.write(manager.getTagForType(class1));
writer.write("\" : ");
writer.write(manager
.getTagForType((Class<? extends ClientConnector>) class1
.getSuperclass()));
}
if (typeInheritanceMapOpen) {
writer.write(" }");
}
}
// TODO Refactor to DependencyWriter or something
/*
* Ensure super classes come before sub classes to get script
* dependency order right. Sub class @JavaScript might assume that
*
* @JavaScript defined by super class is already loaded.
*/
Collections.sort(newConnectorTypes, new Comparator<Class<?>>() {
@Override
public int compare(Class<?> o1, Class<?> o2) {
// TODO optimize using Class.isAssignableFrom?
return hierarchyDepth(o1) - hierarchyDepth(o2);
}
private int hierarchyDepth(Class<?> type) {
if (type == Object.class) {
return 0;
} else {
return hierarchyDepth(type.getSuperclass()) + 1;
}
}
});
List<String> scriptDependencies = new ArrayList<String>();
List<String> styleDependencies = new ArrayList<String>();
for (Class<? extends ClientConnector> class1 : newConnectorTypes) {
JavaScript jsAnnotation = class1
.getAnnotation(JavaScript.class);
if (jsAnnotation != null) {
for (String uri : jsAnnotation.value()) {
scriptDependencies.add(manager.registerDependency(uri,
class1));
}
}
StyleSheet styleAnnotation = class1
.getAnnotation(StyleSheet.class);
if (styleAnnotation != null) {
for (String uri : styleAnnotation.value()) {
styleDependencies.add(manager.registerDependency(uri,
class1));
}
}
}
// Include script dependencies in output if there are any
if (!scriptDependencies.isEmpty()) {
writer.write(", \"scriptDependencies\": "
+ new JSONArray(scriptDependencies).toString());
}
// Include style dependencies in output if there are any
if (!styleDependencies.isEmpty()) {
writer.write(", \"styleDependencies\": "
+ new JSONArray(styleDependencies).toString());
}
if (manager.getDragAndDropService() != null) {
manager.getDragAndDropService().printJSONResponse(writer);
}
for (ClientConnector connector : dirtyVisibleConnectors) {
uiConnectorTracker.markClientSideInitialized(connector);
}