/**
* Search the child's markup in the header section of the markup
*
* @param container
* @param child
* @return Null, if not found
*/
public IMarkupFragment findMarkupInAssociatedFileHeader(
final MarkupContainer container, final Component child) {
// Get the associated markup
IMarkupFragment markup = container.getAssociatedMarkup();
IMarkupFragment childMarkup = null;
// MarkupStream is good at searching markup
MarkupStream stream = new MarkupStream(markup);
while (stream.skipUntil(ComponentTag.class) && (childMarkup == null)) {
ComponentTag tag = stream.getTag();
if (TagUtils.isWicketHeadTag(tag)) {
if (tag.getMarkupClass() == null) {
// find() can still fail an return null => continue the search
childMarkup = stream.getMarkupFragment().find(child.getId());
}
} else if (TagUtils.isHeadTag(tag)) {
// find() can still fail an return null => continue the search
childMarkup = stream.getMarkupFragment().find(child.getId());
}
// Must be a direct child. We are not interested in grand children
if (tag.isOpen() && !tag.hasNoCloseTag()) {
stream.skipToMatchingCloseTag(tag);
}
stream.next();
}
return childMarkup;
}
/**
* Handle tag <head>
*
* @param tag
*/
private void handleHeadTag(ComponentTag tag) {
// we found <head>
if (tag.isOpen()) {
if (foundHead) {
throw new MarkupException(
new MarkupStream(markup),
"Tag <head> is not allowed at this position (do you have multiple <head> tags in your markup?).");
}
foundHead = true;
if (tag.getId() == null) {
tag.setId(HEADER_ID);
tag.setAutoComponentTag(true);
tag.setModified(true);
}
} else if (tag.isClose()) {
if (foundHeaderItemsTag) {
// revert the settings from above
ComponentTag headOpenTag = tag.getOpenTag();
// change the id because it is special. See HtmlHeaderResolver
headOpenTag.setId(HEADER_ID + "-Ignored");
headOpenTag.setAutoComponentTag(false);
headOpenTag.setModified(false);
headOpenTag.setFlag(ComponentTag.RENDER_RAW, true);
}
foundClosingHead = true;
}
}
/**
* Resolves the child component which is the controller of this Enclosure
*
* @param markupStream the markup stream of this Enclosure
* @param enclosureParent the non-auto parent component of this Enclosure
* @return The component associated with the {@linkplain #childId}
*/
private Component getChildComponent(
final MarkupStream markupStream, MarkupContainer enclosureParent) {
String fullChildId = getChildId();
Component controller = enclosureParent.get(fullChildId);
if (controller == null) {
int orgIndex = markupStream.getCurrentIndex();
try {
while (markupStream.hasMore()) {
markupStream.next();
if (markupStream.skipUntil(ComponentTag.class)) {
ComponentTag tag = markupStream.getTag();
if ((tag != null) && (tag.isOpen() || tag.isOpenClose())) {
String tagId = tag.getId();
if (fullChildId.equals(tagId)) {
ComponentTag fullComponentTag = new ComponentTag(tag);
fullComponentTag.setId(childId.toString());
controller =
ComponentResolvers.resolve(
enclosureParent,
markupStream,
fullComponentTag,
new ResolverFilter() {
@Override
public boolean ignoreResolver(final IComponentResolver resolver) {
return resolver instanceof EnclosureHandler;
}
});
break;
} else if (fullChildId.startsWith(tagId + PATH_SEPARATOR)) {
fullChildId = Strings.afterFirst(fullChildId, PATH_SEPARATOR);
}
}
}
}
} finally {
markupStream.setCurrentIndex(orgIndex);
}
}
checkChildComponent(controller);
return controller;
}
/**
* Process next header markup fragment.
*
* @param associatedMarkupStream
* @return index or -1 when done
*/
private int nextHeaderMarkup(final MarkupStream associatedMarkupStream) {
// No associated markup => no header section
if (associatedMarkupStream == null) {
return -1;
}
// Scan the markup for <wicket:head>.
MarkupElement elem = associatedMarkupStream.get();
while (elem != null) {
if (elem instanceof WicketTag) {
WicketTag tag = (WicketTag) elem;
if (tag.isOpen() && tag.isHeadTag()) {
if (noMoreWicketHeadTagsAllowed == true) {
throw new MarkupException(
"<wicket:head> tags are only allowed before <body>, </head>, <wicket:panel> etc. tag");
}
return associatedMarkupStream.getCurrentIndex();
}
// wicket:head must be before border, panel or extend
// @TODO why is that? Why can't it be anywhere? (except inside wicket:fragment)
else if (tag.isOpen() && (tag.isPanelTag() || tag.isBorderTag() || tag.isExtendTag())) {
noMoreWicketHeadTagsAllowed = true;
}
} else if (elem instanceof ComponentTag) {
ComponentTag tag = (ComponentTag) elem;
// wicket:head must be before </head>
// @TODO why??
if (tag.isClose() && TagUtils.isHeadTag(tag)) {
noMoreWicketHeadTagsAllowed = true;
}
// wicket:head must be before <body>
// @TODO why??
else if (tag.isOpen() && TagUtils.isBodyTag(tag)) {
noMoreWicketHeadTagsAllowed = true;
}
}
elem = associatedMarkupStream.next();
}
// No (more) wicket:head found
return -1;
}
/**
* Search for <wicket:panel ...> on the same level.
*
* @param markup
* @return null, if not found
*/
private final IMarkupFragment findStartTag(final IMarkupFragment markup) {
MarkupStream stream = new MarkupStream(markup);
while (stream.skipUntil(ComponentTag.class)) {
ComponentTag tag = stream.getTag();
if (tag.isOpen() || tag.isOpenClose()) {
if (tag instanceof WicketTag) {
WicketTag wtag = (WicketTag) tag;
if (tagName.equalsIgnoreCase(wtag.getName())) {
return stream.getMarkupFragment();
}
}
stream.skipToMatchingCloseTag(tag);
}
stream.next();
}
return null;
}
@Override
public IMarkupFragment getMarkup() {
if (getParent() == null) {
throw new WicketRuntimeException(
"Bug: The Wicket internal instance of HtmlHeaderContainer is not connected to a parent");
}
// Get the page markup
IMarkupFragment markup = getPage().getMarkup();
if (markup == null) {
throw new MarkupException("Unable to get page markup: " + getPage().toString());
}
// Find the markup fragment
MarkupStream stream = new MarkupStream(markup);
IMarkupFragment headerMarkup = null;
while (stream.skipUntil(ComponentTag.class) && (headerMarkup == null)) {
ComponentTag tag = stream.getTag();
if (tag.isOpen() || tag.isOpenClose()) {
if (tag instanceof WicketTag) {
WicketTag wtag = (WicketTag) tag;
if (wtag.isHeadTag()) {
if (tag.getMarkupClass() == null) {
headerMarkup = stream.getMarkupFragment();
}
}
} else if (tag.getName().equalsIgnoreCase("head")) {
headerMarkup = stream.getMarkupFragment();
}
}
stream.next();
}
setMarkup(headerMarkup);
return headerMarkup;
}
@Override
protected MarkupElement onComponentTag(final ComponentTag tag) throws ParseException {
// We only need ComponentTags
if (tag instanceof WicketTag) {
return tag;
}
// Has wicket:enclosure attribute?
String enclosureAttr = getAttribute(tag, null);
if (enclosureAttr != null) {
if (tag.isOpen()) {
// Make sure 'wicket:id' and 'id' are consistent
String htmlId = tag.getAttribute("id");
if ((tag.getId() != null) && !Strings.isEmpty(htmlId) && !htmlId.equals(tag.getId())) {
throw new ParseException(
"Make sure that 'id' and 'wicket:id' are the same if both are provided. Tag:"
+ tag.toString(),
tag.getPos());
}
// if it doesn't have a wicket-id already, then assign one now.
if (Strings.isEmpty(tag.getId())) {
if (Strings.isEmpty(htmlId)) {
String id =
getWicketNamespace() + "_" + INLINE_ENCLOSURE_ID_PREFIX + getRequestUniqueId();
tag.setId(id);
} else {
tag.setId(htmlId);
}
tag.setAutoComponentTag(true);
tag.setAutoComponentFactory(
new ComponentTag.IAutoComponentFactory() {
@Override
public Component newComponent(MarkupContainer container, ComponentTag tag) {
String attributeName = getInlineEnclosureAttributeName(null);
String childId = tag.getAttribute(attributeName);
return new InlineEnclosure(tag.getId(), childId);
}
});
tag.setModified(true);
}
// Put the enclosure on the stack. The most current one will be on top
if (enclosures == null) {
enclosures = new ArrayDeque<>();
}
enclosures.push(tag);
} else {
throw new ParseException(
"Open-close tags don't make sense for InlineEnclosure. Tag:" + tag.toString(),
tag.getPos());
}
}
// Are we within an enclosure?
else if ((enclosures != null) && (enclosures.size() > 0)) {
// In case the enclosure tag did not provide a child component id, then assign the
// first ComponentTag's id found as the controlling child to the enclosure.
if (tag.isOpen()
&& (tag.getId() != null)
&& !(tag instanceof WicketTag)
&& !tag.isAutoComponentTag()) {
Iterator<ComponentTag> componentTagIterator = enclosures.descendingIterator();
while (componentTagIterator.hasNext()) {
ComponentTag lastEnclosure = componentTagIterator.next();
String attr = getAttribute(lastEnclosure, null);
if (Strings.isEmpty(attr) == true) {
lastEnclosure.getAttributes().put(getInlineEnclosureAttributeName(null), tag.getId());
lastEnclosure.setModified(true);
}
}
} else if (tag.isClose() && tag.closes(enclosures.peek())) {
ComponentTag lastEnclosure = enclosures.pop();
String attr = getAttribute(lastEnclosure, null);
if (Strings.isEmpty(attr) == true) {
throw new ParseException(
"Did not find any child for InlineEnclosure. Tag:" + lastEnclosure.toString(),
tag.getPos());
}
}
}
return tag;
}
