Examples with SearchEngine org.eclipse.jdt.core.search.SearchEngine used on opensource projects

Example 21 with SearchEngine

use of org.eclipse.jdt.core.search.SearchEngine in project bndtools by bndtools.

the class PkgPatternsProposalProvider method doGenerateProposals.

@Override
protected Collection<? extends IContentProposal> doGenerateProposals(String contents, int position) {
    String prefix = contents.substring(0, position);
    final int replaceFromPos;
    if (prefix.startsWith("!")) {
        //$NON-NLS-1$
        prefix = prefix.substring(1);
        replaceFromPos = 1;
    } else {
        replaceFromPos = 0;
    }
    Comparator<PkgPatternProposal> comparator = new Comparator<PkgPatternProposal>() {

        public int compare(PkgPatternProposal o1, PkgPatternProposal o2) {
            int result = o1.getPackageFragment().getElementName().compareTo(o2.getPackageFragment().getElementName());
            if (result == 0) {
                result = Boolean.valueOf(o1.isWildcard()).compareTo(Boolean.valueOf(o2.isWildcard()));
            }
            return result;
        }
    };
    final TreeSet<PkgPatternProposal> result = new TreeSet<PkgPatternProposal>(comparator);
    final IJavaSearchScope scope = SearchEngine.createJavaSearchScope(new IJavaElement[] { searchContext.getJavaProject() });
    final SearchPattern pattern = SearchPattern.createPattern("*" + prefix + "*", IJavaSearchConstants.PACKAGE, IJavaSearchConstants.DECLARATIONS, SearchPattern.R_PATTERN_MATCH);
    final SearchRequestor requestor = new SearchRequestor() {

        @Override
        public void acceptSearchMatch(SearchMatch match) throws CoreException {
            IPackageFragment pkg = (IPackageFragment) match.getElement();
            // "java." since these cannot be imported
            if (pkg.isDefaultPackage() || pkg.getElementName().startsWith("java."))
                return;
            result.add(new PkgPatternProposal(pkg, false, replaceFromPos));
            result.add(new PkgPatternProposal(pkg, true, replaceFromPos));
        }
    };
    IRunnableWithProgress runnable = new IRunnableWithProgress() {

        public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
            try {
                new SearchEngine().search(pattern, new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() }, scope, requestor, monitor);
            } catch (CoreException e) {
                throw new InvocationTargetException(e);
            }
        }
    };
    try {
        IRunnableContext runContext = searchContext.getRunContext();
        if (runContext != null) {
            runContext.run(false, false, runnable);
        } else {
            runnable.run(new NullProgressMonitor());
        }
        return result;
    } catch (InvocationTargetException e) {
        logger.logError("Error searching for packages.", e);
        return Collections.emptyList();
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
        return Collections.emptyList();
    }
}