public String[] getValidMorphElements() {
VEXDocument doc = this.getDocument();
if (doc == null) return new String[0];
Validator validator = doc.getValidator();
if (validator == null) return new String[0];
VEXElement element = doc.getElementAt(this.getCaretOffset());
VEXElement parent = element.getParent();
if (parent == null) {
// can't morph the root
return new String[0];
}
Set<String> validItems = validator.getValidItems(parent.getName());
List<String> result = new ArrayList<String>(validItems);
result.remove(Validator.PCDATA);
result.remove(element.getName()); // exclude converting to the same
// root out those that can't contain the current content
EList<String> content = doc.getNodeNames(element.getStartOffset() + 1, element.getEndOffset());
for (Iterator<String> iter = result.iterator(); iter.hasNext(); ) {
String candidate = iter.next();
if (!validator.isValidSequence(candidate, content, true)) {
iter.remove();
}
}
Collections.sort(result);
return result.toArray(new String[result.size()]);
}
/**
* Returns true if the given offset represents the boundary between two different elements with
* the same name and parent. This is used to determine if the elements can be joined via
* joinElementsAt.
*
* @param int offset The offset to check.
*/
private boolean isBetweenMatchingElements(int offset) {
if (offset <= 1 || offset >= this.getDocument().getLength() - 1) {
return false;
}
VEXElement e1 = this.getDocument().getElementAt(offset - 1);
VEXElement e2 = this.getDocument().getElementAt(offset + 1);
return e1 != e2 && e1.getParent() == e2.getParent() && e1.getName().equals(e2.getName());
}
public String[] getValidInsertElements() {
VEXDocument doc = this.getDocument();
if (doc == null) return new String[0];
Validator validator = doc.getValidator();
if (validator == null) return new String[0];
int startOffset = this.getCaretOffset();
int endOffset = this.getCaretOffset();
if (this.hasSelection()) {
startOffset = this.getSelectionStart();
endOffset = this.getSelectionEnd();
}
VEXElement parent = doc.getElementAt(startOffset);
Set<String> validItems = validator.getValidItems(parent.getName());
List<String> candidates = new ArrayList<String>(validItems);
candidates.remove(Validator.PCDATA);
// filter invalid sequences
EList<String> nodesBefore = doc.getNodeNames(parent.getStartOffset() + 1, startOffset);
EList<String> nodesAfter = doc.getNodeNames(endOffset, parent.getEndOffset());
int sequenceLength = nodesBefore.size() + 1 + nodesAfter.size();
for (Iterator<String> iter = candidates.iterator(); iter.hasNext(); ) {
String candidate = iter.next();
EList<String> sequence = new BasicEList<String>(sequenceLength);
sequence.addAll(nodesBefore);
sequence.add(candidate);
sequence.addAll(nodesAfter);
if (!validator.isValidSequence(parent.getName(), sequence, true)) {
iter.remove();
}
}
// If there's a selection, root out those candidates that can't
// contain it.
if (hasSelection()) {
EList<String> selectedNodes = doc.getNodeNames(startOffset, endOffset);
for (Iterator<String> iter = candidates.iterator(); iter.hasNext(); ) {
String candidate = iter.next();
if (!validator.isValidSequence(candidate, selectedNodes, true)) {
iter.remove();
}
}
}
Collections.sort(candidates);
return (String[]) candidates.toArray(new String[candidates.size()]);
}
public boolean canUnwrap() {
VEXDocument doc = this.getDocument();
if (doc == null) {
return false;
}
Validator validator = doc.getValidator();
if (validator == null) {
return false;
}
VEXElement element = doc.getElementAt(this.getCaretOffset());
VEXElement parent = element.getParent();
if (parent == null) {
// can't unwrap the root
return false;
}
EList<String> seq1 = doc.getNodeNames(parent.getStartOffset() + 1, element.getStartOffset());
EList<String> seq2 = doc.getNodeNames(element.getStartOffset() + 1, element.getEndOffset());
EList<String> seq3 = doc.getNodeNames(element.getEndOffset() + 1, parent.getEndOffset());
return validator.isValidSequence(parent.getName(), seq1, seq2, seq3, true);
}
/** Returns true if text can be inserted at the current position. */
public boolean canInsertText() {
VEXDocument doc = this.getDocument();
if (doc == null) {
return false;
}
Validator validator = this.document.getValidator();
if (validator == null) {
return true;
}
int startOffset = this.getCaretOffset();
int endOffset = this.getCaretOffset();
if (this.hasSelection()) {
startOffset = this.getSelectionStart();
endOffset = this.getSelectionEnd();
}
VEXElement parent = this.getDocument().getElementAt(startOffset);
EList<String> seq1 = doc.getNodeNames(parent.getStartOffset() + 1, startOffset);
EList<String> seq2 = new BasicEList<String>();
seq2.add(Validator.PCDATA);
EList<String> seq3 = doc.getNodeNames(endOffset, parent.getEndOffset());
return validator.isValidSequence(parent.getName(), seq1, seq2, seq3, true);
}
public void split() throws DocumentValidationException {
long start = System.currentTimeMillis();
VEXDocument doc = this.getDocument();
VEXElement element = doc.getElementAt(this.getCaretOffset());
Styles styles = this.getStyleSheet().getStyles(element);
while (!styles.isBlock()) {
element = element.getParent();
styles = this.getStyleSheet().getStyles(element);
}
boolean success = false;
try {
this.beginWork();
if (styles.getWhiteSpace().equals(CSS.PRE)) {
// can't call this.insertText() or we'll get an infinite loop
int offset = this.getCaretOffset();
doc.insertText(offset, "\n");
this.moveTo(offset + 1);
} else {
VEXDocumentFragment frag = null;
int offset = this.getCaretOffset();
boolean atEnd = (offset == element.getEndOffset());
if (!atEnd) {
this.moveTo(element.getEndOffset(), true);
frag = this.getSelectedFragment();
this.deleteSelection();
}
// either way, we are now at the end offset for the element
// let's move just outside
this.moveTo(this.getCaretOffset() + 1);
this.insertElement(new Element(element.getName()));
// TODO: clone attributes
if (!atEnd) {
offset = this.getCaretOffset();
this.insertFragment(frag);
this.moveTo(offset, false);
}
}
success = true;
} finally {
this.endWork(success);
}
if (this.isDebugging()) {
long end = System.currentTimeMillis();
System.out.println("split() took " + (end - start) + "ms");
}
}
public void testSetElementName() throws Exception {
VEXElement element = getFixture();
element.setName("book");
assertEquals("Element name not set", "book", element.getName());
}
