package org.angularjs.lang;
import com.intellij.codeInsight.highlighting.HighlightErrorFilter;
import com.intellij.lang.Language;
import com.intellij.lang.html.HTMLLanguage;
import com.intellij.lang.injection.InjectedLanguageManager;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiErrorElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlAttribute;
import com.intellij.psi.xml.XmlTag;
import com.intellij.xml.XmlElementDescriptor;
import org.angularjs.codeInsight.tags.AngularJSTagDescriptor;
import org.angularjs.index.AngularIndexUtil;
import org.jetbrains.annotations.NotNull;
/**
* @author Dennis.Ushakov
*/
public class AngularJSErrorFilter extends HighlightErrorFilter {
@Override
public boolean shouldHighlightErrorElement(@NotNull PsiErrorElement error) {
final Project project = error.getProject();
final Language language = error.getLanguage();
if ("CSS".equals(language.getID()) && PsiTreeUtil.getParentOfType(error, XmlAttribute.class) != null &&
AngularIndexUtil.hasAngularJS(project)) {
final PsiFile file = error.getContainingFile();
PsiErrorElement nextError = error;
while (nextError != null) {
if (hasAngularInjectionAt(project, file, nextError.getTextOffset())) return false;
nextError = PsiTreeUtil.getNextSiblingOfType(nextError, PsiErrorElement.class);
}
}
if (HTMLLanguage.INSTANCE.is(language) && error.getErrorDescription().endsWith("not closed")) {
final PsiElement parent = error.getParent();
final XmlElementDescriptor descriptor = parent instanceof XmlTag ? ((XmlTag)parent).getDescriptor() : null;
return !(descriptor instanceof AngularJSTagDescriptor);
}
return true;
}
private static boolean hasAngularInjectionAt(final Project project, final PsiFile file, final int offset) {
final PsiElement injection =
InjectedLanguageManager.getInstance(project).findInjectedElementAt(file, offset);
return injection != null && injection.getContainingFile().getLanguage() == AngularJSLanguage.INSTANCE;
}
}