/**
* Returns <code>true</code> if the proposal has a selection, e.g. will wrap some code.
*
* @return <code>true</code> if the proposals completion length is non zero
* @since 3.2
*/
private boolean isSelectionTemplate() {
if (fContext instanceof DocumentTemplateContext) {
DocumentTemplateContext ctx = (DocumentTemplateContext) fContext;
if (ctx.getCompletionLength() > 0) return true;
}
return false;
}
/**
* 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;
}
/**
* Returns the end offset of the range in the document that will be replaced by applying this
* template.
*
* @return the end offset of the range in the document that will be replaced by applying this
* template
*/
protected final int getReplaceEndOffset() {
int end;
if (fContext instanceof DocumentTemplateContext) {
DocumentTemplateContext docContext = (DocumentTemplateContext) fContext;
end = docContext.getEnd();
} else {
end = fRegion.getOffset() + fRegion.getLength();
}
return end;
}
/**
* Returns the offset of the range in the document that will be replaced by applying this
* template.
*
* @return the offset of the range in the document that will be replaced by applying this template
*/
protected final int getReplaceOffset() {
int start;
if (fContext instanceof DocumentTemplateContext) {
DocumentTemplateContext docContext = (DocumentTemplateContext) fContext;
start = docContext.getStart();
} else {
start = fRegion.getOffset();
}
return start;
}
/** @param template */
protected void drop(Template template, int dropCaretOffset, int length) {
IDocument document = editor.getTextEditor().getTextViewer().getDocument();
ContextTypeRegistry registry = XMLUIPlugin.getDefault().getTemplateContextRegistry();
if (registry != null) {
TemplateContextType type = registry.getContextType(template.getContextTypeId());
DocumentTemplateContext templateContext =
new DocumentTemplateContext(type, document, new Position(dropCaretOffset, length));
if (templateContext.canEvaluate(template)) {
try {
TemplateBuffer templateBuffer = templateContext.evaluate(template);
String templateString = templateBuffer.getString();
document.replace(dropCaretOffset, length, templateString);
StyledText styledText = editor.getTextWidget();
int position = getCursorOffset(templateBuffer) + dropCaretOffset;
styledText.setCaretOffset(position);
styledText.setFocus();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
