| /* |
| * Copyright 2000-2012 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.xml.util; |
| |
| import com.intellij.psi.PsiAnchor; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiInvalidElementAccessException; |
| import com.intellij.psi.impl.light.LightElement; |
| import com.intellij.psi.search.PsiElementProcessor; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlElement; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.psi.xml.XmlText; |
| import com.intellij.reference.SoftReference; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author peter |
| */ |
| public abstract class IncludedXmlElement<T extends XmlElement> extends LightElement implements XmlElement { |
| private final PsiAnchor myOriginal; |
| private SoftReference<T> myRef; |
| private final PsiElement myParent; |
| |
| public IncludedXmlElement(@NotNull T original, @Nullable PsiElement parent) { |
| super(original.getManager(), original.getLanguage()); |
| //noinspection unchecked |
| T realOriginal = original instanceof IncludedXmlElement ? ((IncludedXmlElement<T>)original).getOriginal() : original; |
| myOriginal = PsiAnchor.create(realOriginal); |
| myRef = new SoftReference<T>(realOriginal); |
| myParent = parent; |
| } |
| |
| @Override |
| public boolean isValid() { |
| T t = myRef.get(); |
| if (t != null) { |
| return t.isValid(); |
| } |
| |
| return myOriginal.retrieve() != null; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| IncludedXmlElement element = (IncludedXmlElement)o; |
| |
| if (!myParent.equals(element.myParent)) return false; |
| if (!myOriginal.equals(element.myOriginal)) return false; |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = myOriginal.hashCode(); |
| result = 31 * result + myParent.hashCode(); |
| return result; |
| } |
| |
| public T getOriginal() { |
| T element = myRef.get(); |
| if (element != null) { |
| return element; |
| } |
| |
| element = (T)myOriginal.retrieve(); |
| if (element == null) { |
| throw new PsiInvalidElementAccessException(this); |
| } |
| myRef = new SoftReference<T>(element); |
| return element; |
| } |
| |
| @NotNull |
| @Override |
| public T getNavigationElement() { |
| return getOriginal(); |
| } |
| |
| @Override |
| public PsiFile getContainingFile() { |
| return myParent.getContainingFile(); |
| } |
| |
| @Override |
| public PsiElement getParent() { |
| return myParent; |
| } |
| |
| @Override |
| public String toString() { |
| return getClass().getSimpleName(); |
| } |
| |
| @Override |
| public boolean processElements(final PsiElementProcessor processor, PsiElement place) { |
| final IncludedXmlElement<T> self = this; |
| return getOriginal().processElements(new PsiElementProcessor() { |
| @SuppressWarnings("unchecked") |
| @Override |
| public boolean execute(@NotNull PsiElement element) { |
| if (element instanceof XmlTag) { |
| XmlTag theirParent = ((XmlTag)element).getParentTag(); |
| PsiElement parent = getOriginal().equals(theirParent) ? (XmlTag)self : theirParent; |
| return processor.execute(new IncludedXmlTag((XmlTag)element, parent)); |
| } |
| if (element instanceof XmlAttribute) { |
| XmlTag theirParent = ((XmlAttribute)element).getParent(); |
| XmlTag parent = getOriginal().equals(theirParent) ? (XmlTag)self : theirParent; |
| return processor.execute(new IncludedXmlAttribute((XmlAttribute)element, parent)); |
| } |
| if (element instanceof XmlText) { |
| XmlTag theirParent = ((XmlText)element).getParentTag(); |
| XmlTag parent = getOriginal().equals(theirParent) ? (XmlTag)self : theirParent; |
| return processor.execute(new IncludedXmlText((XmlText)element, parent)); |
| } |
| return processor.execute(element); |
| } |
| }, place); |
| } |
| |
| |
| } |