/**
* Gets the appropriate CSS class to use based on the state of the current {@link
* org.springframework.web.servlet.support.BindStatus} object.
*/
protected String resolveCssClass() throws JspException {
if (getBindStatus().isError() && StringUtils.hasText(getCssErrorClass())) {
return ObjectUtils.getDisplayString(evaluate("cssErrorClass", getCssErrorClass()));
} else {
return ObjectUtils.getDisplayString(evaluate("cssClass", getCssClass()));
}
}
/** Copy & Paste, 无修正. */
@Override
protected int writeTagContent(TagWriter tagWriter) throws JspException {
Object items = getItems();
Object itemsObject = items instanceof String ? evaluate("items", items) : items;
String itemValue = getItemValue();
String itemLabel = getItemLabel();
String valueProperty =
itemValue != null ? ObjectUtils.getDisplayString(evaluate("itemValue", itemValue)) : null;
String labelProperty =
itemLabel != null ? ObjectUtils.getDisplayString(evaluate("itemLabel", itemLabel)) : null;
Class<?> boundType = getBindStatus().getValueType();
if ((itemsObject == null) && (boundType != null) && boundType.isEnum()) {
itemsObject = boundType.getEnumConstants();
}
if (itemsObject == null) {
throw new IllegalArgumentException(
"Attribute 'items' is required and must be a Collection, an Array or a Map");
}
if (itemsObject.getClass().isArray()) {
Object[] itemsArray = (Object[]) itemsObject;
for (int i = 0; i < itemsArray.length; i++) {
Object item = itemsArray[i];
writeObjectEntry(tagWriter, valueProperty, labelProperty, item, i);
}
} else if (itemsObject instanceof Collection) {
final Collection<?> optionCollection = (Collection<?>) itemsObject;
int itemIndex = 0;
for (Iterator<?> it = optionCollection.iterator(); it.hasNext(); itemIndex++) {
Object item = it.next();
writeObjectEntry(tagWriter, valueProperty, labelProperty, item, itemIndex);
}
} else if (itemsObject instanceof Map) {
final Map<?, ?> optionMap = (Map<?, ?>) itemsObject;
int itemIndex = 0;
for (Iterator<?> it = optionMap.entrySet().iterator(); it.hasNext(); itemIndex++) {
@SuppressWarnings("rawtypes")
Map.Entry entry = (Map.Entry) it.next();
writeMapEntry(tagWriter, valueProperty, labelProperty, entry, itemIndex);
}
} else {
throw new IllegalArgumentException(
"Attribute 'items' must be an array, a Collection or a Map");
}
return SKIP_BODY;
}
/**
* Writes the optional attributes configured via this base class to the supplied {@link
* TagWriter}. The set of optional attributes that will be rendered includes any non-standard
* dynamic attributes. Called by {@link #writeDefaultAttributes(TagWriter)}.
*/
protected void writeOptionalAttributes(TagWriter tagWriter) throws JspException {
tagWriter.writeOptionalAttributeValue(CLASS_ATTRIBUTE, resolveCssClass());
tagWriter.writeOptionalAttributeValue(
STYLE_ATTRIBUTE, ObjectUtils.getDisplayString(evaluate("cssStyle", getCssStyle())));
writeOptionalAttribute(tagWriter, LANG_ATTRIBUTE, getLang());
writeOptionalAttribute(tagWriter, TITLE_ATTRIBUTE, getTitle());
writeOptionalAttribute(tagWriter, DIR_ATTRIBUTE, getDir());
writeOptionalAttribute(tagWriter, TABINDEX_ATTRIBUTE, getTabindex());
writeOptionalAttribute(tagWriter, ONCLICK_ATTRIBUTE, getOnclick());
writeOptionalAttribute(tagWriter, ONDBLCLICK_ATTRIBUTE, getOndblclick());
writeOptionalAttribute(tagWriter, ONMOUSEDOWN_ATTRIBUTE, getOnmousedown());
writeOptionalAttribute(tagWriter, ONMOUSEUP_ATTRIBUTE, getOnmouseup());
writeOptionalAttribute(tagWriter, ONMOUSEOVER_ATTRIBUTE, getOnmouseover());
writeOptionalAttribute(tagWriter, ONMOUSEMOVE_ATTRIBUTE, getOnmousemove());
writeOptionalAttribute(tagWriter, ONMOUSEOUT_ATTRIBUTE, getOnmouseout());
writeOptionalAttribute(tagWriter, ONKEYPRESS_ATTRIBUTE, getOnkeypress());
writeOptionalAttribute(tagWriter, ONKEYUP_ATTRIBUTE, getOnkeyup());
writeOptionalAttribute(tagWriter, ONKEYDOWN_ATTRIBUTE, getOnkeydown());
if (!CollectionUtils.isEmpty(this.dynamicAttributes)) {
for (String attr : this.dynamicAttributes.keySet()) {
tagWriter.writeOptionalAttributeValue(
attr, getDisplayString(this.dynamicAttributes.get(attr)));
}
}
}
protected void configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext wac) {
if (ObjectUtils.identityToString(wac).equals(wac.getId())) {
// The application context id is still set to its original default value
// -> assign a more useful id based on available information
if (this.contextId != null) {
wac.setId(this.contextId);
} else {
// Generate default id...
wac.setId(
ConfigurableWebApplicationContext.APPLICATION_CONTEXT_ID_PREFIX
+ ObjectUtils.getDisplayString(getServletContext().getContextPath())
+ "/"
+ getServletName());
}
}
wac.setServletContext(getServletContext());
wac.setServletConfig(getServletConfig());
wac.setNamespace(getNamespace());
wac.addApplicationListener(new SourceFilteringListener(wac, new ContextRefreshListener()));
// The wac environment's #initPropertySources will be called in any case when the context
// is refreshed; do it eagerly here to ensure servlet property sources are in place for
// use in any post-processing or initialization that occurs below prior to #refresh
ConfigurableEnvironment env = wac.getEnvironment();
if (env instanceof ConfigurableWebEnvironment) {
((ConfigurableWebEnvironment) env)
.initPropertySources(getServletContext(), getServletConfig());
}
postProcessWebApplicationContext(wac);
applyInitializers(wac);
wac.refresh();
}
