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/*
* Copyright 2007 Sascha Weinreuter
*
* 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.intellij.plugins.relaxNG.model.descriptors;
import com.intellij.openapi.util.Comparing;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiReference;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlElement;
import com.intellij.psi.xml.XmlTag;
import com.intellij.util.ArrayUtil;
import com.intellij.util.Function;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.xml.impl.BasicXmlAttributeDescriptor;
import com.intellij.xml.util.XmlEnumeratedValueReference;
import gnu.trove.THashSet;
import gnu.trove.TObjectHashingStrategy;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.kohsuke.rngom.digested.DAttributePattern;
import org.xml.sax.Locator;
import javax.xml.namespace.QName;
import java.util.*;
public class RngXmlAttributeDescriptor extends BasicXmlAttributeDescriptor {
@NonNls
private static final QName UNKNOWN = new QName("", "#unknown");
private static final TObjectHashingStrategy<Locator> HASHING_STRATEGY = new TObjectHashingStrategy<Locator>() {
public int computeHashCode(Locator o) {
final String s = o.getSystemId();
return o.getLineNumber() * 31 + o.getColumnNumber() * 23 + (s != null ? s.hashCode() * 11 : 0);
}
public boolean equals(Locator o, Locator o1) {
if ((o.getLineNumber() == o1.getLineNumber() && o.getColumnNumber() == o1.getColumnNumber())) {
if (Comparing.equal(o.getSystemId(), o1.getSystemId())) {
return true;
}
}
return false;
}
};
private final Map<String, String> myValues;
private final boolean myOptional;
private final RngElementDescriptor myElementDescriptor;
private final THashSet<Locator> myDeclarations = new THashSet<Locator>(HASHING_STRATEGY);
private final QName myName;
RngXmlAttributeDescriptor(RngElementDescriptor elementDescriptor, DAttributePattern pattern, Map<String, String> values, boolean optional) {
this(elementDescriptor, getName(pattern), values, optional, pattern.getLocation());
}
private static QName getName(DAttributePattern pattern) {
final Iterator<QName> iterator = pattern.getName().listNames().iterator();
return iterator.hasNext() ? iterator.next() : UNKNOWN;
}
private RngXmlAttributeDescriptor(RngElementDescriptor elementDescriptor, QName name, Map<String, String> values, boolean optional, Locator... locations) {
myElementDescriptor = elementDescriptor;
myValues = values;
myOptional = optional;
myName = name;
myDeclarations.addAll(Arrays.asList(locations));
}
public RngXmlAttributeDescriptor mergeWith(RngXmlAttributeDescriptor d) {
final QName name = d.myName.equals(UNKNOWN) ? myName : d.myName;
final HashMap<String, String> values = new HashMap<String, String>(myValues);
values.putAll(d.myValues);
final THashSet<Locator> locations = new THashSet<Locator>(myDeclarations, HASHING_STRATEGY);
locations.addAll(d.myDeclarations);
return new RngXmlAttributeDescriptor(myElementDescriptor, name, values, myOptional || d.myOptional, locations.toArray(new Locator[locations.size()]));
}
public boolean isRequired() {
return !myOptional;
}
public boolean isFixed() {
return isEnumerated() && myValues.size() == 1;
}
public boolean hasIdType() {
return myValues.values().contains("ID");
}
public boolean hasIdRefType() {
return myValues.values().contains("IDREF");
}
@Nullable
public String getDefaultValue() {
return isEnumerated() ? myValues.keySet().iterator().next() : null;
}
public boolean isEnumerated() {
return myValues.size() > 0 && myValues.get(null) == null;
}
public String[] getEnumeratedValues() {
if (myValues.size() > 0) {
final Map<String, String> copy;
if (myValues.get(null) != null) {
copy = new HashMap<String, String>(myValues);
copy.remove(null);
} else {
copy = myValues;
}
return copy.keySet().toArray(new String[copy.size()]);
} else {
return ArrayUtil.EMPTY_STRING_ARRAY;
}
}
public PsiElement getDeclaration() {
final Iterator<Locator> it = myDeclarations.iterator();
if (!it.hasNext()) return null;
return myElementDescriptor.getDeclaration(it.next());
}
public Collection<PsiElement> getDeclarations() {
return ContainerUtil.map2List(myDeclarations, new Function<Locator, PsiElement>() {
public PsiElement fun(Locator locator) {
return myElementDescriptor.getDeclaration(locator);
}
});
}
@Override
public String getName(PsiElement context) {
final XmlTag tag = PsiTreeUtil.getParentOfType(context, XmlTag.class, false, PsiFile.class);
if (tag != null) {
final String uri = myName.getNamespaceURI();
final String prefix = tag.getPrefixByNamespace(uri);
if (prefix != null) {
if (prefix.length() == 0) {
return myName.getLocalPart();
} else {
return prefix + ":" + myName.getLocalPart();
}
}
}
if (myName.getNamespaceURI().length() > 0) {
final String prefix2 = myName.getPrefix();
if (prefix2 != null && prefix2.length() > 0) {
return prefix2 + ":" + myName.getLocalPart();
}
}
return myName.getLocalPart();
}
@NonNls
public String getName() {
return myName.getLocalPart();
}
public void init(PsiElement element) {
}
public Object[] getDependences() {
return myElementDescriptor.getDependences();
}
@Override
public String validateValue(XmlElement context, String value) {
if (isTokenDatatype(value)) {
value = normalizeSpace(value);
}
return super.validateValue(context, value);
}
private boolean isTokenDatatype(String value) {
if (myValues.containsKey(value)) {
return "token".equals(myValues.get(value));
}
value = normalizeSpace(value);
return myValues.containsKey(value) && "token".equals(myValues.get(value));
}
private static String normalizeSpace(String value) {
return value.replaceAll("\\s+", " ").trim();
}
@Override
public PsiReference[] getValueReferences(final XmlElement element, @NotNull String text) {
return new PsiReference[] { new XmlEnumeratedValueReference(element, this) {
@Nullable
@Override
public PsiElement resolve() {
if (isTokenDatatype(getValue())) {
return getElement();
}
return super.resolve();
}
}};
}
}
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