/*
* Copyright (c) 2000-2007 JetBrains s.r.o. All Rights Reserved.
*/
package com.intellij.psi.impl.source.resolve.reference.impl.providers;
import com.intellij.codeInsight.daemon.EmptyResolveMessageProvider;
import com.intellij.codeInsight.daemon.JavaErrorMessages;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiPackage;
import com.intellij.psi.PsiReferenceBase;
import com.intellij.util.ArrayUtil;
import org.jetbrains.annotations.Nullable;
public class PsiPackageReference extends PsiReferenceBase<PsiElement> implements EmptyResolveMessageProvider {
private final PackageReferenceSet myReferenceSet;
private final int myIndex;
public PsiPackageReference(final PackageReferenceSet set, final TextRange range, final int index) {
super(set.getElement(), range);
myReferenceSet = set;
myIndex = index;
}
@Nullable
private PsiPackage getPsiPackage() {
return myIndex == 0 ? getElement().getManager().findPackage("") : myReferenceSet.getReference(myIndex - 1).resolve();
}
public boolean isSoft() {
return true;
}
@Nullable
public PsiPackage resolve() {
final PsiPackage parentPackage = getPsiPackage();
if (parentPackage != null) {
for (PsiPackage aPackage : parentPackage.getSubPackages()) {
if (Comparing.equal(aPackage.getName(), getCanonicalText())) {
return aPackage;
}
}
}
return null;
}
public Object[] getVariants() {
final PsiPackage psiPackage = getPsiPackage();
if (psiPackage == null) return ArrayUtil.EMPTY_OBJECT_ARRAY;
final PsiPackage[] psiPackages = psiPackage.getSubPackages();
final Object[] variants = new Object[psiPackages.length];
System.arraycopy(psiPackages, 0, variants, 0, variants.length);
return variants;
}
public String getUnresolvedMessagePattern() {
return JavaErrorMessages.message("cannot.resolve.symbol");
}
}