Examples with XmlRefCountHolder com.intellij.xml.util.XmlRefCountHolder used on opensource projects

Example 1 with XmlRefCountHolder

use of com.intellij.xml.util.XmlRefCountHolder in project intellij-community by JetBrains.

the class XmlUnusedNamespaceInspection method buildVisitor.

@NotNull
@Override
public PsiElementVisitor buildVisitor(@NotNull final ProblemsHolder holder, boolean isOnTheFly) {
    return new XmlElementVisitor() {

        @Override
        public void visitXmlAttribute(XmlAttribute attribute) {
            PsiFile file = holder.getFile();
            if (!(file instanceof XmlFile))
                return;
            XmlRefCountHolder refCountHolder = XmlRefCountHolder.getRefCountHolder((XmlFile) file);
            if (refCountHolder == null)
                return;
            if (!attribute.isNamespaceDeclaration()) {
                checkUnusedLocations(attribute, holder, refCountHolder);
                return;
            }
            String namespace = attribute.getValue();
            String declaredPrefix = getDeclaredPrefix(attribute);
            if (namespace != null && !refCountHolder.isInUse(declaredPrefix)) {
                ImplicitUsageProvider[] implicitUsageProviders = Extensions.getExtensions(ImplicitUsageProvider.EP_NAME);
                for (ImplicitUsageProvider provider : implicitUsageProviders) {
                    if (provider.isImplicitUsage(attribute))
                        return;
                }
                XmlAttributeValue value = attribute.getValueElement();
                assert value != null;
                holder.registerProblem(attribute, XmlBundle.message("xml.inspections.unused.schema.declaration"), ProblemHighlightType.LIKE_UNUSED_SYMBOL, new RemoveNamespaceDeclarationFix(declaredPrefix, false, !refCountHolder.isUsedNamespace(namespace)));
                XmlTag parent = attribute.getParent();
                if (declaredPrefix.isEmpty()) {
                    XmlAttribute location = getDefaultLocation(parent);
                    if (location != null) {
                        holder.registerProblem(location, XmlBundle.message("xml.inspections.unused.schema.location"), ProblemHighlightType.LIKE_UNUSED_SYMBOL, new RemoveNamespaceDeclarationFix(declaredPrefix, true, true));
                    }
                } else if (!refCountHolder.isUsedNamespace(namespace)) {
                    for (PsiReference reference : getLocationReferences(namespace, parent)) {
                        if (!XmlHighlightVisitor.hasBadResolve(reference, false))
                            holder.registerProblemForReference(reference, ProblemHighlightType.LIKE_UNUSED_SYMBOL, XmlBundle.message("xml.inspections.unused.schema.location"), new RemoveNamespaceDeclarationFix(declaredPrefix, true, true));
                    }
                }
            }
        }
    };
}