/** 重载方法，调整元素的输出顺序。 */
private void writeElementTag(
TagWriter tagWriter, Object item, Object value, Object label, int itemIndex)
throws JspException {
String id = resolveId();
String resolvedLabelClass = getInputType();
if (labelCssClass != null) {
resolvedLabelClass += " " + labelCssClass;
}
tagWriter.startTag("label");
tagWriter.writeAttribute("for", id);
tagWriter.writeAttribute("class", resolvedLabelClass);
if (itemIndex > 0) {
Object resolvedDelimiter = evaluate("delimiter", getDelimiter());
if (resolvedDelimiter != null) {
tagWriter.appendValue(resolvedDelimiter.toString());
}
}
tagWriter.startTag("input");
writeOptionalAttribute(tagWriter, "id", id);
writeOptionalAttribute(tagWriter, "name", getName());
writeOptionalAttributes(tagWriter);
tagWriter.writeAttribute("type", getInputType());
renderFromValue(item, value, tagWriter);
tagWriter.endTag();
tagWriter.appendValue(convertToDisplayString(label));
tagWriter.endTag();
}
/**
* Creates messagesPanel tag
*
* @throws JspException In case when {@link JspException} is generated later in the chain when tag
* configured by messagesPanel could not be created
* @see org.springframework.web.servlet.tags.RequestContextAwareTag#doStartTagInternal()
*/
@Override
protected int doStartTagInternal() throws JspException {
if (!StringUtils.hasText(this.panelElement)
&& !StringUtils.hasText(this.outerElement)
&& !StringUtils.hasText(this.innerElement)) {
throw new JspTagException(
"At least one out of panelElement, outerElement, innerElement should be set");
}
TagWriter tagWriter = createTagWriter();
Object messages = this.pageContext.findAttribute(messagesAttributeName);
if (messages != null) {
if (StringUtils.hasText(panelElement)) {
tagWriter.startTag(panelElement); // <div>
StringBuilder className = new StringBuilder(panelClassName);
String type = getType(messages);
if (panelTypeClassPrefix != null && StringUtils.hasText(type)) {
if (StringUtils.hasLength(className)) {
className.append(" ");
}
className.append(panelTypeClassPrefix);
}
className.append(type);
if (StringUtils.hasText(className)) {
tagWriter.writeAttribute("class", className.toString());
}
}
{
if (StringUtils.hasText(outerElement)) {
tagWriter.startTag(outerElement); // <ul>
}
writeMessages(tagWriter, messages);
if (StringUtils.hasText(outerElement)) {
tagWriter.endTag(); // </ul>
}
}
if (StringUtils.hasText(panelElement)) {
tagWriter.endTag(); // </div>
}
}
return EVAL_BODY_INCLUDE;
}
@Override
protected void renderDefaultContent(TagWriter tagWriter) throws JspException {
String[] errorMessages = getBindStatus().getErrorMessages();
if (CollectionUtils.size(errorMessages) > 1) {
tagWriter.startTag(getElement());
writeDefaultAttributes(tagWriter);
for (String errorMessage : errorMessages) {
tagWriter.startTag("li");
tagWriter.appendValue(errorMessage);
tagWriter.endTag();
}
tagWriter.endTag();
} else {
tagWriter.startTag("span");
for (String errorMessage : errorMessages) {
tagWriter.appendValue(errorMessage);
}
tagWriter.endTag();
}
}
@Override
protected void writeInputContent(TagWriter tagWriter) throws JspException {
tagWriter.startTag("textarea");
if (isAutoValidate() || getValidConf() != null) {
writeOptionalAttribute(tagWriter, ATTR_VALID_CONF, getValidConf());
setOnblur("validateEventHandler();");
}
writeDefaultAttributes(tagWriter);
writeOptionalAttribute(tagWriter, ROWS_ATTRIBUTE, getRows());
writeOptionalAttribute(tagWriter, COLS_ATTRIBUTE, getCols());
writeOptionalAttribute(tagWriter, ONSELECT_ATTRIBUTE, getOnselect());
tagWriter.appendValue(getDisplayString(getBoundValue(), getPropertyEditor()));
tagWriter.endTag();
}
/**
* writes the message tag.
*
* <p>If {@link #innerElement} is specified, the tag specified in it will be applied around the
* message.<br>
*
* @param tagWriter a TagWriter instance
* @param message message
* @throws JspException Occurs when {@link JspTagException} occurs in case when nothing is set in
* the configuration of the tag that configures messagesPanel using tagWriter.
*/
protected void writeMessage(TagWriter tagWriter, Object message) throws JspException {
if (message != null) {
if (StringUtils.hasText(innerElement)) {
tagWriter.startTag(innerElement); // <li>
}
if (disableHtmlEscape) {
tagWriter.appendValue(getText(message));
} else {
tagWriter.appendValue(HtmlEscapeUtils.htmlEscape(getText(message)));
}
if (StringUtils.hasText(innerElement)) {
tagWriter.endTag(); // </li>
}
}
}
@Override
protected int writeTagContent(TagWriter tagWriter) throws JspException {
super.writeTagContent(tagWriter);
if (!isDisabled()) {
// Write out the 'field was present' marker.
tagWriter.startTag("input");
tagWriter.writeAttribute("type", "hidden");
String name = WebDataBinder.DEFAULT_FIELD_MARKER_PREFIX + getName();
tagWriter.writeAttribute("name", name);
tagWriter.writeAttribute("value", processFieldValue(name, "on", getInputType()));
tagWriter.endTag();
}
return SKIP_BODY;
}