/**
* Computes the relevance to match the relevance values generated by the core content assistant.
*
* @return a sensible relevance value.
*/
private int computeRelevance() {
// see org.eclipse.jdt.internal.codeassist.RelevanceConstants
final int R_DEFAULT = 0;
final int R_INTERESTING = 5;
final int R_CASE = 10;
final int R_NON_RESTRICTED = 3;
final int R_EXACT_NAME = 4;
final int R_INLINE_TAG = 31;
int base = R_DEFAULT + R_INTERESTING + R_NON_RESTRICTED;
try {
if (fContext instanceof DocumentTemplateContext) {
DocumentTemplateContext templateContext = (DocumentTemplateContext) fContext;
IDocument document = templateContext.getDocument();
String content = document.get(fRegion.getOffset(), fRegion.getLength());
if (content.length() > 0 && fTemplate.getName().startsWith(content)) base += R_CASE;
if (fTemplate.getName().equalsIgnoreCase(content)) base += R_EXACT_NAME;
if (fContext instanceof JavaDocContext) base += R_INLINE_TAG;
}
} catch (BadLocationException e) {
// ignore - not a case sensitive match then
}
// see CompletionProposalCollector.computeRelevance
// just under keywords, but better than packages
final int TEMPLATE_RELEVANCE = 1;
return base * 16 + TEMPLATE_RELEVANCE;
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension6#getStyledDisplayString()
* @since 3.4
*/
@Override
public StyledString getStyledDisplayString() {
if (fDisplayString == null) {
String[] arguments = new String[] {fTemplate.getName(), fTemplate.getDescription()};
String decorated =
Messages.format(TemplateContentAssistMessages.TemplateProposal_displayString, arguments);
StyledString string = new StyledString(fTemplate.getName(), StyledString.COUNTER_STYLER);
fDisplayString =
StyledCellLabelProvider.styleDecoratedString(
decorated, StyledString.QUALIFIER_STYLER, string);
}
return fDisplayString;
}
/*
* @see TemplateContext#canEvaluate(Template templates)
*/
@Override
public boolean canEvaluate(Template template) {
if (!hasCompatibleContextType(template)) return false;
if (fForceEvaluation) return true;
String key = getKey();
return (key.length() > 0 || !isAfterDot())
&& template.getName().toLowerCase().startsWith(key.toLowerCase());
}
private int getRelevance(Template template, int lineOffset, String prefix) {
boolean blockTemplate = templates == null ? false : templates.isBlock(template);
if (blockTemplate) {
if (template.getName().startsWith(prefix)) {
return lineOffset == 0 ? 95 : 75;
}
return lineOffset == 0 ? 85 : 0;
}
return super.getRelevance(template, prefix);
}
public CodeClipDialog(
Shell parentShell, Shell contextShell, TemplatePersistenceData templatePersistenceData) {
super(parentShell);
this.contextShell = contextShell;
this.templatePersistenceData = templatePersistenceData;
Template template = templatePersistenceData.getTemplate();
abbrev = template.getName();
description = template.getDescription();
expansion = template.getPattern();
contentType = template.getContextTypeId();
setHelpAvailable(false);
}
private Template indentTemplatePattern(final Template template, final boolean indentFrom0) {
String pattern = template.getPattern();
final String whiteSpacePrefix = indentFrom0 ? "" : getWhiteSpacePrefix();
try {
pattern = IndentAction.indentLines(0, 0, pattern, true, whiteSpacePrefix);
} catch (final RpcException e) {
ErlLogger.error(e);
}
return new Template(
template.getName(),
template.getDescription(),
template.getContextTypeId(),
pattern,
template.isAutoInsertable());
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension2#validate(org.eclipse.jface.text.IDocument, int, org.eclipse.jface.text.DocumentEvent)
*/
@Override
public boolean validate(IDocument document, int offset, DocumentEvent event) {
try {
int replaceOffset = getReplaceOffset();
if (offset >= replaceOffset) {
String content = document.get(replaceOffset, offset - replaceOffset);
String templateName = fTemplate.getName().toLowerCase();
boolean valid = templateName.startsWith(content.toLowerCase());
if (!valid
&& fContext instanceof JavaDocContext
&& templateName.startsWith("<")) { // $NON-NLS-1$
valid = templateName.startsWith(content.toLowerCase(), 1);
}
return valid;
}
} catch (BadLocationException e) {
// concurrent modification - ignore
}
return false;
}
@NotNull
private ICompletionProposal[] makeTemplateProposals(
ITextViewer viewer, int documentOffset, String wordPart) {
wordPart = wordPart.toLowerCase();
final List<SQLTemplateCompletionProposal> templateProposals = new ArrayList<>();
// Templates
for (Template template : editor.getTemplatesPage().getTemplateStore().getTemplates()) {
if (template.getName().toLowerCase().startsWith(wordPart)) {
templateProposals.add(
new SQLTemplateCompletionProposal(
template,
new SQLContext(
SQLTemplatesRegistry.getInstance()
.getTemplateContextRegistry()
.getContextType(template.getContextTypeId()),
viewer.getDocument(),
new Position(wordDetector.getStartOffset(), wordDetector.getLength()),
editor),
new Region(documentOffset, 0),
null));
}
}
return templateProposals.toArray(new ICompletionProposal[templateProposals.size()]);
}
/**
* Saves the templates as XML.
*
* @param templates the templates to save
* @param result the stream result to write to
* @throws IOException if writing the templates fails
*/
private void save(TemplatePersistenceData[] templates, StreamResult result) throws IOException {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.newDocument();
Node root = document.createElement(TEMPLATE_ROOT);
document.appendChild(root);
for (int i = 0; i < templates.length; i++) {
TemplatePersistenceData data = templates[i];
Template template = data.getTemplate();
Node node = document.createElement(TEMPLATE_ELEMENT);
root.appendChild(node);
NamedNodeMap attributes = node.getAttributes();
String id = data.getId();
if (id != null) {
Attr idAttr = document.createAttribute(ID_ATTRIBUTE);
idAttr.setValue(id);
attributes.setNamedItem(idAttr);
}
if (template != null) {
Attr name = document.createAttribute(NAME_ATTRIBUTE);
name.setValue(template.getName());
attributes.setNamedItem(name);
}
if (template != null) {
Attr proposalDesc = document.createAttribute(PROPOSAL_POPUP_DESCRIPTION);
if (template instanceof SQLTemplate) {
proposalDesc.setValue(((SQLTemplate) template).getProposalPopupDescription());
}
attributes.setNamedItem(proposalDesc);
}
if (template != null) {
Attr description = document.createAttribute(DESCRIPTION_ATTRIBUTE);
description.setValue(template.getDescription());
attributes.setNamedItem(description);
}
if (template != null) {
Attr context = document.createAttribute(CONTEXT_ATTRIBUTE);
context.setValue(template.getContextTypeId());
attributes.setNamedItem(context);
}
Attr enabled = document.createAttribute(ENABLED_ATTRIBUTE);
enabled.setValue(data.isEnabled() ? Boolean.toString(true) : Boolean.toString(false));
attributes.setNamedItem(enabled);
Attr deleted = document.createAttribute(DELETED_ATTRIBUTE);
deleted.setValue(data.isDeleted() ? Boolean.toString(true) : Boolean.toString(false));
attributes.setNamedItem(deleted);
if (template != null) {
Attr autoInsertable = document.createAttribute(AUTO_INSERTABLE_ATTRIBUTE);
autoInsertable.setValue(
template.isAutoInsertable() ? Boolean.toString(true) : Boolean.toString(false));
attributes.setNamedItem(autoInsertable);
}
if (template != null) {
Text pattern = document.createTextNode(template.getPattern());
node.appendChild(pattern);
}
}
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.METHOD, "xml"); // $NON-NLS-1$
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); // $NON-NLS-1$
DOMSource source = new DOMSource(document);
transformer.transform(source, result);
} catch (ParserConfigurationException e) {
Assert.isTrue(false);
} catch (TransformerException e) {
if (e.getException() instanceof IOException) throw (IOException) e.getException();
Assert.isTrue(false);
}
}
/** Override to improve matching accuracy */
@Override
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
ITextSelection selection = (ITextSelection) viewer.getSelectionProvider().getSelection();
// adjust offset to end of normalized selection
if (selection.getOffset() == offset) {
offset = selection.getOffset() + selection.getLength();
}
String prefix = extractPrefix(viewer, offset);
Region region = new Region(offset - prefix.length(), prefix.length());
TemplateContext context = createContext(viewer, region);
if (context == null) {
return new ICompletionProposal[0];
}
Region selectionRegion = new Region(selection.getOffset(), selection.getLength());
TemplateContext selectionContext = createContext(viewer, selectionRegion);
int lineOffset = 0;
try {
IRegion lineInformationOfOffset = viewer.getDocument().getLineInformationOfOffset(offset);
lineOffset = offset - lineInformationOfOffset.getOffset();
} catch (BadLocationException e1) {
// ignore
}
String selectionText = selection.getText();
context.setVariable("selection", selectionText); // $NON-NLS-1$
selectionContext.setVariable("selection", selectionText); // $NON-NLS-1$
context.setVariable("text", selectionText); // $NON-NLS-1$
selectionContext.setVariable("text", selectionText); // $NON-NLS-1$
Template[] templates = getTemplates(context.getContextType().getId());
List<ICompletionProposal> matches = new ArrayList<>(templates.length);
for (Template template : templates) {
try {
context.getContextType().validate(template.getPattern());
} catch (TemplateException e) {
continue;
}
if (!template.matches(prefix, context.getContextType().getId())) {
continue;
}
boolean selectionBasedMatch = isSelectionBasedMatch(template, context);
if (template.getName().startsWith(prefix) || selectionBasedMatch) {
int relevance = getRelevance(template, lineOffset, prefix);
if (selectionBasedMatch) {
matches.add(
createProposal(template, selectionContext, (IRegion) selectionRegion, relevance));
} else {
matches.add(createProposal(template, context, (IRegion) region, relevance));
}
}
}
Collections.sort(matches, proposalComparator);
return matches.toArray(new ICompletionProposal[matches.size()]);
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalExtension3#getReplacementString()
*/
@Override
public CharSequence getPrefixCompletionText(IDocument document, int completionOffset) {
// bug 114360 - don't make selection templates prefix-completable
if (isSelectionTemplate()) return ""; // $NON-NLS-1$
return fTemplate.getName();
}
@Override
public boolean canEvaluate(final Template template) {
final String key = getKey();
return key.length() != 0 && template.getName().toLowerCase().startsWith(key.toLowerCase());
}