| /* |
| * Copyright 2000-2014 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 com.intellij.psi.impl.source.xml; |
| |
| import com.intellij.openapi.util.NullableLazyValue; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.meta.PsiMetaOwner; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.util.ArrayUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.xml.XmlAttributeDescriptor; |
| import com.intellij.xml.XmlElementDescriptor; |
| import com.intellij.xml.impl.XmlAttributeDescriptorEx; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class XmlAttributeReference implements PsiReference { |
| private final NullableLazyValue<XmlAttributeDescriptor> myDescriptor = new NullableLazyValue<XmlAttributeDescriptor>() { |
| @Override |
| protected XmlAttributeDescriptor compute() { |
| return myAttribute.getDescriptor(); |
| } |
| }; |
| private final XmlAttributeImpl myAttribute; |
| |
| public XmlAttributeReference(XmlAttributeImpl attribute) { |
| myAttribute = attribute; |
| } |
| |
| @Override |
| public XmlAttribute getElement() { |
| return myAttribute; |
| } |
| |
| @Override |
| public TextRange getRangeInElement() { |
| final int parentOffset = myAttribute.getNameElement().getStartOffsetInParent(); |
| int nsLen = myAttribute.getNamespacePrefix().length(); |
| nsLen += nsLen > 0 && !myAttribute.getRealLocalName().isEmpty() ? 1 : -nsLen; |
| return new TextRange(parentOffset + nsLen, parentOffset + myAttribute.getNameElement().getTextLength()); |
| } |
| |
| @Override |
| public PsiElement resolve() { |
| final XmlAttributeDescriptor descriptor = getDescriptor(); |
| return descriptor != null ? descriptor.getDeclaration() : null; |
| } |
| |
| @Override |
| @NotNull |
| public String getCanonicalText() { |
| return myAttribute.getName(); |
| } |
| |
| @Override |
| public PsiElement handleElementRename(String newElementName) throws IncorrectOperationException { |
| String newName = newElementName; |
| if (getDescriptor() instanceof XmlAttributeDescriptorEx) { |
| final XmlAttributeDescriptorEx xmlAttributeDescriptorEx = (XmlAttributeDescriptorEx)getDescriptor(); |
| final String s = xmlAttributeDescriptorEx.handleTargetRename(newElementName); |
| if (s != null) { |
| final String prefix = myAttribute.getNamespacePrefix(); |
| newName = StringUtil.isEmpty(prefix) ? s : prefix + ":" + s; |
| } |
| } |
| return myAttribute.setName(newName); |
| } |
| |
| @Override |
| public PsiElement bindToElement(@NotNull PsiElement element) throws IncorrectOperationException { |
| if (element instanceof PsiMetaOwner) { |
| final PsiMetaOwner owner = (PsiMetaOwner)element; |
| if (owner.getMetaData() instanceof XmlElementDescriptor) { |
| myAttribute.setName(owner.getMetaData().getName()); |
| } |
| } |
| throw new IncorrectOperationException("Cant bind to not a xml element definition!"); |
| } |
| |
| @Override |
| public boolean isReferenceTo(PsiElement element) { |
| return myAttribute.getManager().areElementsEquivalent(element, resolve()); |
| } |
| |
| @Override |
| @NotNull |
| public Object[] getVariants() { |
| return ArrayUtil.EMPTY_OBJECT_ARRAY; // moved to XmlAttributeReferenceCompletionProvider |
| } |
| |
| @Override |
| public boolean isSoft() { |
| return getDescriptor() == null; |
| } |
| |
| @Nullable |
| private XmlAttributeDescriptor getDescriptor() { |
| return myDescriptor.getValue(); |
| } |
| } |