protected void addViewParameters(
FacesContext ctx, String viewId, Map<String, List<String>> existingParameters) {
UIViewRoot currentRoot = ctx.getViewRoot();
String currentViewId = currentRoot.getViewId();
Collection<UIViewParameter> toViewParams;
Collection<UIViewParameter> currentViewParams;
boolean currentIsSameAsNew = false;
currentViewParams = ViewMetadata.getViewParameters(currentRoot);
if (currentViewId.equals(viewId)) {
currentIsSameAsNew = true;
toViewParams = currentViewParams;
} else {
ViewDeclarationLanguage pdl = getViewDeclarationLanguage(ctx, viewId);
ViewMetadata viewMetadata = pdl.getViewMetadata(ctx, viewId);
UIViewRoot root = viewMetadata.createMetadataView(ctx);
toViewParams = ViewMetadata.getViewParameters(root);
}
if (toViewParams.isEmpty()) {
return;
}
for (UIViewParameter viewParam : toViewParams) {
String value;
// don't bother looking at view parameter if it's been overridden
if (existingParameters.containsKey(viewParam.getName())) {
continue;
} else if (paramHasValueExpression(viewParam)) {
value = viewParam.getStringValueFromModel(ctx);
} else {
// Anonymous view parameter:
// Get string value from UIViewParameter instance stored in current view
if (currentIsSameAsNew) {
value = viewParam.getStringValue(ctx);
}
// ...or transfer string value from matching UIViewParameter instance stored in current view
else {
value = getStringValueToTransfer(ctx, viewParam, currentViewParams);
}
}
if (value != null) {
List<String> existing = existingParameters.get(viewParam.getName());
if (existing == null) {
existing = new ArrayList<String>(4);
existingParameters.put(viewParam.getName(), existing);
}
existing.add(value);
}
}
}
private static String getChainedHandler(
FacesContext context,
UIComponent component,
List<ClientBehavior> behaviors,
Collection<ClientBehaviorContext.Parameter> params,
String behaviorEventName,
String userHandler) {
StringBuilder builder = new StringBuilder(100);
builder.append("jsf.util.chain(this,event,");
appendScriptToChain(builder, userHandler);
boolean submitting =
appendBehaviorsToChain(builder, context, component, behaviors, behaviorEventName, params);
boolean hasParams = ((null != params) && !params.isEmpty());
if (!submitting && hasParams) {
String submitHandler = getSubmitHandler(context, component, params, false);
appendScriptToChain(builder, submitHandler);
submitting = true;
}
builder.append(")");
if (submitting && ("action".equals(behaviorEventName) || "click".equals(behaviorEventName))) {
builder.append(";return false");
}
return builder.toString();
}
private static String getSubmitHandler(
FacesContext context,
UIComponent component,
Collection<ClientBehaviorContext.Parameter> params,
boolean preventDefault) {
StringBuilder builder = new StringBuilder(256);
String formClientId = getFormClientId(component, context);
String componentClientId = component.getClientId(context);
builder.append("qab.sf(document.getElementById('");
builder.append(formClientId);
builder.append("'),{");
appendProperty(builder, componentClientId, componentClientId);
if ((null != params) && (!params.isEmpty())) {
for (ClientBehaviorContext.Parameter param : params) {
appendProperty(builder, param.getName(), param.getValue());
}
}
builder.append("})");
if (preventDefault) {
builder.append(";return false");
}
return builder.toString();
}
private static HandlerType getHandlerType(
List<ClientBehavior> behaviors,
Collection<ClientBehaviorContext.Parameter> params,
String userHandler) {
if ((behaviors == null) || (behaviors.isEmpty())) {
if (params.isEmpty()) return HandlerType.USER_HANDLER_ONLY;
return (userHandler == null) ? HandlerType.SUBMIT_ONLY : HandlerType.CHAIN;
}
if ((behaviors.size() == 1) && (userHandler == null)) {
ClientBehavior behavior = behaviors.get(0);
if (isSubmitting(behavior) || params.isEmpty()) return HandlerType.SINGLE_BEHAVIOR_ONLY;
}
return HandlerType.CHAIN;
}
private static String getStringValueToTransfer(
FacesContext context, UIViewParameter param, Collection<UIViewParameter> viewParams) {
if (viewParams != null && !viewParams.isEmpty()) {
for (UIViewParameter candidate : viewParams) {
if ((null != candidate.getName() && null != param.getName())
&& candidate.getName().equals(param.getName())) {
return candidate.getStringValue(context);
} else {
return param.getStringValue(context);
}
}
}
return null;
}