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/*
* 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.ide.projectView.impl;
import com.intellij.ide.projectView.ProjectViewNode;
import com.intellij.ide.projectView.SelectableTreeStructureProvider;
import com.intellij.ide.projectView.ViewSettings;
import com.intellij.ide.projectView.impl.nodes.ClassTreeNode;
import com.intellij.ide.projectView.impl.nodes.PsiFileNode;
import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ProjectFileIndex;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.*;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jps.model.java.JavaModuleSourceRootTypes;
import java.util.ArrayList;
import java.util.Collection;
public class ClassesTreeStructureProvider implements SelectableTreeStructureProvider, DumbAware {
private final Project myProject;
public ClassesTreeStructureProvider(Project project) {
myProject = project;
}
@NotNull
@Override
public Collection<AbstractTreeNode> modify(@NotNull AbstractTreeNode parent, @NotNull Collection<AbstractTreeNode> children, ViewSettings settings) {
ArrayList<AbstractTreeNode> result = new ArrayList<AbstractTreeNode>();
for (final AbstractTreeNode child : children) {
Object o = child.getValue();
if (o instanceof PsiClassOwner && !(o instanceof ServerPageFile)) {
final ViewSettings settings1 = ((ProjectViewNode)parent).getSettings();
final PsiClassOwner classOwner = (PsiClassOwner)o;
final VirtualFile file = classOwner.getVirtualFile();
if (!(classOwner instanceof PsiCompiledElement)) {
//do not show duplicated items if jar file contains classes and sources
final ProjectFileIndex fileIndex = ProjectRootManager.getInstance(myProject).getFileIndex();
if (file != null && fileIndex.isInLibrarySource(file)) {
final PsiElement originalElement = classOwner.getOriginalElement();
if (originalElement instanceof PsiFile) {
PsiFile classFile = (PsiFile)originalElement;
final VirtualFile virtualClassFile = classFile.getVirtualFile();
if (virtualClassFile != null && fileIndex.isInLibraryClasses(virtualClassFile) &&
classOwner.getManager().areElementsEquivalent(classOwner.getContainingDirectory(), classFile.getContainingDirectory())) {
continue;
}
}
}
}
if (fileInRoots(file)) {
PsiClass[] classes = ApplicationManager.getApplication().runReadAction(new Computable<PsiClass[]>() {
@Override
public PsiClass[] compute() {
return classOwner.getClasses();
}
});
if (classes.length == 1 && !(classes[0] instanceof SyntheticElement) &&
(file == null || file.getNameWithoutExtension().equals(classes[0].getName()))) {
result.add(new ClassTreeNode(myProject, classes[0], settings1));
} else {
result.add(new PsiClassOwnerTreeNode(classOwner, settings1));
}
continue;
}
}
result.add(child);
}
return result;
}
private boolean fileInRoots(VirtualFile file) {
final ProjectFileIndex index = ProjectRootManager.getInstance(myProject).getFileIndex();
return file != null && (index.isUnderSourceRootOfType(file, JavaModuleSourceRootTypes.SOURCES) || index.isInLibraryClasses(file) || index.isInLibrarySource(file));
}
@Override
public Object getData(Collection<AbstractTreeNode> selected, String dataName) {
return null;
}
@Override
public PsiElement getTopLevelElement(final PsiElement element) {
PsiFile baseRootFile = getBaseRootFile(element);
if (baseRootFile == null) return null;
if (!fileInRoots(baseRootFile.getVirtualFile())) return baseRootFile;
PsiElement current = element;
while (current != null) {
if (isSelectable(current)) break;
if (isTopLevelClass(current, baseRootFile)) break;
current = current.getParent();
}
if (current instanceof PsiClassOwner) {
PsiClass[] classes = ((PsiClassOwner)current).getClasses();
if (classes.length == 1 && !(classes[0] instanceof SyntheticElement) && isTopLevelClass(classes[0], baseRootFile)) {
current = classes[0];
}
}
return current != null ? current : baseRootFile;
}
private static boolean isSelectable(PsiElement element) {
if (element instanceof PsiFileSystemItem) return true;
if (element instanceof PsiField || element instanceof PsiClass || element instanceof PsiMethod) {
return !(element.getParent() instanceof PsiAnonymousClass) && !(element instanceof PsiAnonymousClass);
}
return false;
}
@Nullable
private static PsiFile getBaseRootFile(PsiElement element) {
final PsiFile containingFile = element.getContainingFile();
if (containingFile == null) return null;
final FileViewProvider viewProvider = containingFile.getViewProvider();
return viewProvider.getPsi(viewProvider.getBaseLanguage());
}
private static boolean isTopLevelClass(final PsiElement element, PsiFile baseRootFile) {
if (!(element instanceof PsiClass)) {
return false;
}
if (element instanceof PsiAnonymousClass) {
return false;
}
final PsiFile parentFile = parentFileOf((PsiClass)element);
// do not select JspClass
return parentFile != null && parentFile.getLanguage() == baseRootFile.getLanguage();
}
@Nullable
private static PsiFile parentFileOf(final PsiClass psiClass) {
return psiClass.getContainingClass() == null ? psiClass.getContainingFile() : null;
}
private static class PsiClassOwnerTreeNode extends PsiFileNode {
public PsiClassOwnerTreeNode(PsiClassOwner classOwner, ViewSettings settings) {
super(classOwner.getProject(), classOwner, settings);
}
@Override
public Collection<AbstractTreeNode> getChildrenImpl() {
final ViewSettings settings = getSettings();
final ArrayList<AbstractTreeNode> result = new ArrayList<AbstractTreeNode>();
for (PsiClass aClass : ((PsiClassOwner)getValue()).getClasses()) {
if (!(aClass instanceof SyntheticElement)) {
result.add(new ClassTreeNode(myProject, aClass, settings));
}
}
return result;
}
}
}
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