Examples with PrefixMatcher org.eclipse.xtext.ui.editor.contentassist.PrefixMatcher used on opensource projects

Example 6 with PrefixMatcher

use of org.eclipse.xtext.ui.editor.contentassist.PrefixMatcher in project xtext-eclipse by eclipse.

the class CrossReferenceProposalTest method testBug356185.

@Test
public void testBug356185() throws Exception {
    final String content = "Foo {}";
    XtextResourceSet rs = new XtextResourceSet() {

        @Override
        protected void demandLoad(Resource resource) throws IOException {
            resource.load(new StringInputStream(content), null);
        }
    };
    rs.setClasspathURIContext(getClass());
    XtextResource resource1 = (XtextResource) rs.createResource(URI.createURI("test1." + getCurrentFileExtension()));
    resource1.load(new StringInputStream(content), null);
    Model model = (Model) resource1.getContents().get(0);
    URI classToShowURI = EcoreUtil.getURI(model.getElements().get(0));
    resource1.unload();
    ClassImpl classToShow = (ClassImpl) CrossReferenceProposalTestFactory.eINSTANCE.createClass();
    classToShow.eSetProxyURI(classToShowURI);
    ResourceSet resourceSet = resource1.getResourceSet();
    XtextResource resource2 = (XtextResource) resourceSet.createResource(URI.createURI("test." + getCurrentFileExtension()));
    resource2.load(new StringInputStream("Foo <- Bar {}"), null);
    ContentAssistContext.Builder builder = get(ContentAssistContext.Builder.class);
    builder.setResource(resource2);
    builder.setReplaceRegion(new Region(0, 0));
    model = (Model) resource2.getContents().get(0);
    Class contextClass = model.getElements().get(0);
    ICompositeNode node = NodeModelUtils.getNode(contextClass);
    builder.setCurrentNode(node);
    builder.setMatcher(new PrefixMatcher() {

        @Override
        public boolean isCandidateMatchingPrefix(String name, String prefix) {
            return true;
        }
    });
    ContentAssistContext context = builder.toContext();
    ContentProposalProvider proposalProvider = get(ContentProposalProvider.class);
    proposalProvider.setConflictHelper(new IProposalConflictHelper() {

        @Override
        public boolean existsConflict(String proposal, ContentAssistContext context) {
            return false;
        }
    });
    Function<IEObjectDescription, ICompletionProposal> proposalFactory = proposalProvider.getProposalFactory(context);
    ConfigurableCompletionProposal proposal = (ConfigurableCompletionProposal) proposalFactory.apply(new EObjectDescription(QualifiedName.create("Foo"), classToShow, null));
    assertTrue(classToShow.eIsProxy());
    Object additionalProposalInfo = proposal.getAdditionalProposalInfo(new NullProgressMonitor());
    assertNotNull(additionalProposalInfo);
}