public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
List<ICompletionProposal> result = new ArrayList<ICompletionProposal>();
try {
IDocument document = viewer.getDocument();
ITypedRegion partition = document.getPartition(offset);
if (isOffsetValidForProposal(document, offset, partition.getOffset())) {
result.add(
new CompletionProposal("1 ", offset, 0, 2, null, "1 Heading level 1", null, null));
result.add(
new CompletionProposal("1.1 ", offset, 0, 4, null, "1.1 Heading level 2", null, null));
result.add(
new CompletionProposal(
"1.1.1 ", offset, 0, 6, null, "1.1.1 Heading level 3", null, null));
result.add(
new CompletionProposal(
"1.1.1.1 ", offset, 0, 8, null, "1.1.1.1 Heading level 4", null, null));
result.add(
new CompletionProposal(
"1.1.1.1.1 ", offset, 0, 10, null, "1.1.1.1.1 Heading level 5", null, null));
result.add(
new CompletionProposal(
"1.1.1.1.1.1 ", offset, 0, 12, null, "1.1.1.1.1.1 Heading level 6", null, null));
}
} catch (BadLocationException e) {
CoreLog.logError("Content assist error", e);
}
if (result.size() > 0) {
return result.toArray(new ICompletionProposal[result.size()]);
}
return null;
}
private ITypedRegion getPartition(IDocument document, ITextSelection textSelection) {
ITypedRegion region = null;
if (textSelection != null) {
try {
region = document.getPartition(textSelection.getOffset());
} catch (BadLocationException e) {
region = null;
}
}
return region;
}
/**
* Returns null when no match found! Assumes the document has been partitioned via HTML partition
* scanner
*
* @param document
* @param offset
* @param partitionsToSearch A collection of the string partition names to search for tags.
* Optimization to avoid looking in non HTML/XML tags!
* @return
*/
public static IRegion findMatchingTag(
IDocument document, int offset, Collection<String> partitionsToSearch) {
try {
ITypedRegion region = document.getPartition(offset);
if (!partitionsToSearch.contains(region.getType())) {
return null;
}
String src = document.get(region.getOffset(), region.getLength());
if (src.startsWith("</")) // $NON-NLS-1$
{
return findMatchingOpen(document, region, partitionsToSearch);
}
// Handle self-closing tags!
if (src.endsWith("/>")) // $NON-NLS-1$
{
return null;
}
return findMatchingClose(document, region, partitionsToSearch);
} catch (BadLocationException e) {
XMLPlugin.logError(e.getMessage(), e);
}
return null;
}
/**
* Returns the partition type located at offset in the document
*
* @param document - assumes document is not null
* @param offset
* @return String partition type
*/
protected String getPartitionType(IDocument document, int offset) {
String type = null;
try {
// TODO: provide partitioning information so we're not using a default like this
if (document instanceof IStructuredDocument) {
type =
TextUtilities.getContentType(
document, IStructuredPartitioning.DEFAULT_STRUCTURED_PARTITIONING, offset, false);
}
} catch (BadLocationException e1) {
} finally {
if (type == null) {
try {
ITypedRegion region = document.getPartition(offset);
if (region != null) {
type = region.getType();
}
} catch (BadLocationException e) {
type = null;
}
}
}
return type;
}