/*
* 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 com.intellij.psi.impl.smartPointers;
import com.intellij.lang.Language;
import com.intellij.lang.LanguageUtil;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.Segment;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.impl.PsiDocumentManagerBase;
import consulo.annotations.RequiredReadAction;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* User: cdr
*/
class FileElementInfo extends SmartPointerElementInfo {
private final VirtualFile myVirtualFile;
private final Project myProject;
private final Language myLanguage;
private final Class<? extends PsiFile> myFileClass;
public FileElementInfo(@NotNull final PsiFile file) {
myVirtualFile = file.getVirtualFile();
myProject = file.getProject();
myLanguage = LanguageUtil.getRootLanguage(file);
myFileClass = file.getClass();
}
@RequiredReadAction
@Override
public PsiElement restoreElement() {
PsiFile file = SelfElementInfo.restoreFileFromVirtual(myVirtualFile, myProject, myLanguage);
return myFileClass.isInstance(file) ? file : null;
}
@Override
public PsiFile restoreFile() {
PsiElement element = restoreElement();
return element == null ? null : element.getContainingFile(); // can be directory
}
@Override
public int elementHashCode() {
return myVirtualFile.hashCode();
}
@Override
public boolean pointsToTheSameElementAs(@NotNull SmartPointerElementInfo other) {
return other instanceof FileElementInfo && Comparing.equal(myVirtualFile, ((FileElementInfo)other).myVirtualFile);
}
@Override
public VirtualFile getVirtualFile() {
return myVirtualFile;
}
@Override
public Segment getRange() {
return new TextRange(0, (int)myVirtualFile.getLength());
}
@NotNull
@Override
public Project getProject() {
return myProject;
}
@Nullable
@Override
public Segment getPsiRange() {
Document currentDoc = FileDocumentManager.getInstance().getCachedDocument(myVirtualFile);
Document committedDoc = currentDoc == null ? null :
((PsiDocumentManagerBase)PsiDocumentManager.getInstance(myProject)).getLastCommittedDocument(currentDoc);
return committedDoc == null ? getRange() : new TextRange(0, committedDoc.getTextLength());
}
@Override
public String toString() {
return "file{" + myVirtualFile + ", " + myLanguage + "}";
}
}