/**
* {@inheritDoc}
*
* @see AbstractSelectionExecutable#execute(String)
*/
public boolean execute(String param) {
// Get the selected anchor
AnchorElement selectedAnchor = LinkExecutableUtils.getSelectedAnchor(rta);
if (selectedAnchor == null) {
return false;
}
Range range = rta.getDocument().getSelection().getRangeAt(0);
// unlink
// but first check where is the selection. If the selection is a caret and is at one side of the
// anchor, just
// move the caret out instead of removing the link
boolean moveSelection = range.isCollapsed();
boolean isBeginning = false;
boolean isEnd = false;
if (moveSelection) {
// check if it's at the beginning or at the end
isBeginning =
(domUtils.getFirstAncestor(
domUtils.getPreviousLeaf(range), LinkExecutableUtils.ANCHOR_TAG_NAME)
!= selectedAnchor)
&& range.getStartOffset() == 0;
isEnd =
(domUtils.getFirstAncestor(
domUtils.getNextLeaf(range), LinkExecutableUtils.ANCHOR_TAG_NAME)
!= selectedAnchor)
&& range.getEndOffset() == domUtils.getLength(range.getEndContainer());
}
if (moveSelection && (isEnd || isBeginning) && selectedAnchor.getOffsetWidth() > 0) {
// cursor it's at the beginning or at the end, move it out of the anchor
moveCaretOuside(rta, Element.as(selectedAnchor), isEnd);
} else {
Element.as(selectedAnchor).unwrap();
}
return true;
}
/**
* Updates the meta data of the given anchor.
*
* @param anchor the anchor whose meta data will be updated
* @param reference the new link reference
* @param linkType the new link type
*/
private void updateMetaData(AnchorElement anchor, String reference, LinkType linkType) {
Document document = (Document) anchor.getOwnerDocument();
DocumentFragment metaData = document.createDocumentFragment();
metaData.appendChild(
document.createComment("startwikilink:" + EscapeUtils.escapeComment(reference)));
metaData.appendChild(document.createSpanElement());
if (CLASS_NAME_MAPPING.containsKey(linkType)) {
Element.as(metaData.getChild(1)).setClassName(CLASS_NAME_MAPPING.get(linkType));
}
metaData.getChild(1).appendChild(document.createTextNode(Element.INNER_HTML_PLACEHOLDER));
metaData.appendChild(document.createComment("stopwikilink"));
Element.as(anchor).setMetaData(metaData);
}
/**
* {@inheritDoc}
*
* @see ConfigDOMWriter#write(Object, com.google.gwt.dom.client.Element)
*/
public void write(LinkConfig config, AnchorElement anchor) {
// Required attributes.
updateMetaData(anchor, config.getReference(), config.getType());
anchor.setHref(config.getUrl());
// Optional attributes.
updateAttribute(anchor, "title", config.getTooltip());
if (config.isOpenInNewWindow()) {
anchor.setRel(TARGET_BLANK);
} else if (TARGET_BLANK.equalsIgnoreCase(anchor.getRel())) {
anchor.removeAttribute("rel");
}
// Update the content.
if (!anchor.getInnerHTML().equals(config.getLabel())) {
// Inner HTML listeners have to be notified in order to extract the meta data.
Element.as(anchor).xSetInnerHTML(config.getLabel());
}
}