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/*
* Copyright 2000-2010 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.android.dom.converters;
import com.android.resources.ResourceType;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.psi.xml.XmlAttributeValue;
import com.intellij.util.ArrayUtil;
import com.intellij.util.xml.ConvertContext;
import com.intellij.util.xml.GenericDomValue;
import org.jetbrains.android.dom.resources.ResourceNameConverter;
import org.jetbrains.android.dom.resources.ResourceValue;
import org.jetbrains.android.facet.AndroidFacet;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.List;
/**
* @author Eugene.Kudelevsky
*/
public class ParentStyleConverter extends ResourceReferenceConverter {
public ParentStyleConverter() {
super(ResourceType.STYLE.getName(), false, false);
setAllowAttributeReferences(false);
}
@NotNull
@Override
public PsiReference[] createReferences(GenericDomValue<ResourceValue> value, PsiElement element, ConvertContext context) {
if (element instanceof XmlAttributeValue) {
// parent="" is allowed; it's used to deliberately allow style A.B.C to not be a child of A.B
XmlAttributeValue attributeValue = (XmlAttributeValue)element;
if (attributeValue.isValid() && attributeValue.getValue().isEmpty()) {
return PsiReference.EMPTY_ARRAY;
}
}
final PsiReference[] refsFromSuper = super.createReferences(value, element, context);
final ResourceValue resValue = value.getValue();
if (resValue == null || resValue.getPackage() != null) {
return refsFromSuper;
}
final AndroidFacet facet = AndroidFacet.getInstance(context);
if (facet != null) {
final PsiReference[] refs = getReferencesInStyleName(value, facet);
if (refs.length > 0) {
return ArrayUtil.mergeArrays(refsFromSuper, refs);
}
}
return refsFromSuper;
}
@NotNull
private static PsiReference[] getReferencesInStyleName(@NotNull GenericDomValue<?> value, @NotNull AndroidFacet facet) {
String s = value.getStringValue();
if (s == null) {
return PsiReference.EMPTY_ARRAY;
}
int start = 0;
final int idx = s.indexOf('/');
if (idx >= 0) {
start = idx + 1;
s = s.substring(start);
}
final String[] ids = s.split("\\.");
if (ids.length < 2) {
return PsiReference.EMPTY_ARRAY;
}
final List<PsiReference> result = new ArrayList<PsiReference>(ids.length - 1);
int offset = s.length();
for (int i = ids.length - 1; i >= 0; i--) {
final String styleName = s.substring(0, offset);
if (i < ids.length - 1) {
final ResourceValue val = ResourceValue.referenceTo((char)0, null, ResourceType.STYLE.getName(), styleName);
result.add(new ResourceNameConverter.MyParentStyleReference(value, new TextRange(1 + start, 1 + start + offset), val, facet));
}
if (ResourceNameConverter.hasExplicitParent(facet, styleName)) {
break;
}
offset = offset - ids[i].length() - 1;
}
return result.toArray(new PsiReference[result.size()]);
}
}
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