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DummyHolderViewProvider.java
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DummyHolderViewProvider.java
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/*
* Copyright 2000-2009 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;
import com.intellij.lang.Language;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.util.UserDataHolderBase;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.impl.PsiManagerEx;
import com.intellij.psi.impl.SharedPsiElementImplUtil;
import com.intellij.psi.impl.source.DummyHolder;
import com.intellij.psi.impl.source.PsiFileImpl;
import com.intellij.psi.impl.source.tree.LeafElement;
import com.intellij.testFramework.LightVirtualFile;
import com.intellij.util.LocalTimeCounter;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collections;
import java.util.List;
import java.util.Set;
public class DummyHolderViewProvider extends UserDataHolderBase implements FileViewProvider{
private DummyHolder myHolder;
private final PsiManager myManager;
private final long myModificationStamp;
private final LightVirtualFile myLightVirtualFile = new LightVirtualFile("DummyHolder");
public DummyHolderViewProvider(@NotNull PsiManager manager) {
myManager = manager;
myModificationStamp = LocalTimeCounter.currentTime();
}
@Override
@NotNull
public PsiManager getManager() {
return myManager;
}
@Override
@Nullable
public Document getDocument() {
return FileDocumentManager.getInstance().getDocument(getVirtualFile());
}
@Override
@NotNull
public CharSequence getContents() {
return myHolder != null ? myHolder.getNode().getText() : "";
}
@Override
@NotNull
public VirtualFile getVirtualFile() {
return myLightVirtualFile;
}
@Override
@NotNull
public Language getBaseLanguage() {
return myHolder.getLanguage();
}
@Override
@NotNull
public Set<Language> getLanguages() {
return Collections.singleton(getBaseLanguage());
}
@Override
public PsiFile getPsi(@NotNull Language target) {
((PsiManagerEx)myManager).getFileManager().setViewProvider(getVirtualFile(), this);
return target == getBaseLanguage() ? myHolder : null;
}
@Override
@NotNull
public List<PsiFile> getAllFiles() {
return Collections.singletonList(getPsi(getBaseLanguage()));
}
@Override
public void beforeContentsSynchronized() {}
@Override
public void contentsSynchronized() {}
@Override
public boolean isEventSystemEnabled() {
return false;
}
@Override
public boolean isPhysical() {
return false;
}
@Override
public long getModificationStamp() {
return myModificationStamp;
}
@Override
public boolean supportsIncrementalReparse(@NotNull final Language rootLanguage) {
return true;
}
@Override
public void rootChanged(@NotNull PsiFile psiFile) {
}
public void setDummyHolder(@NotNull DummyHolder dummyHolder) {
myHolder = dummyHolder;
myLightVirtualFile.setFileType(dummyHolder.getFileType());
}
@Override
public FileViewProvider clone(){
throw new RuntimeException("Clone is not supported for DummyHolderProviders. Use DummyHolder clone directly.");
}
@Override
public PsiReference findReferenceAt(final int offset) {
return SharedPsiElementImplUtil.findReferenceAt(getPsi(getBaseLanguage()), offset);
}
@Override
@Nullable
public PsiElement findElementAt(final int offset, @NotNull final Language language) {
return language == getBaseLanguage() ? findElementAt(offset) : null;
}
@Override
public PsiElement findElementAt(int offset, @NotNull Class<? extends Language> lang) {
if (!lang.isAssignableFrom(getBaseLanguage().getClass())) return null;
return findElementAt(offset);
}
@Override
public PsiReference findReferenceAt(final int offsetInElement, @NotNull final Language language) {
return language == getBaseLanguage() ? findReferenceAt(offsetInElement) : null;
}
@NotNull
@Override
public FileViewProvider createCopy(@NotNull final VirtualFile copy) {
throw new RuntimeException("Clone is not supported for DummyHolderProviders. Use DummyHolder clone directly.");
}
@NotNull
@Override
public PsiFile getStubBindingRoot() {
return getPsi(getBaseLanguage());
}
@Override
public PsiElement findElementAt(final int offset) {
final LeafElement element = ((PsiFileImpl)getPsi(getBaseLanguage())).calcTreeElement().findLeafElementAt(offset);
return element != null ? element.getPsi() : null;
}
}