/*
* Copyright 2000-2016 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.todo.nodes;
import com.intellij.ide.projectView.impl.nodes.PackageElement;
import com.intellij.ide.projectView.impl.nodes.PackageUtil;
import com.intellij.ide.todo.TodoTreeBuilder;
import com.intellij.ide.util.treeView.AbstractTreeNode;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootManager;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.*;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.Nullable;
import java.util.*;
public class TodoJavaTreeHelper extends TodoTreeHelper {
public TodoJavaTreeHelper(final Project project) {
super(project);
}
@Override
public boolean skipDirectory(final PsiDirectory directory) {
return JavaDirectoryService.getInstance().getPackage(directory) != null;
}
@Override
public PsiElement getSelectedElement(final Object userObject) {
if (userObject instanceof TodoPackageNode) {
TodoPackageNode descriptor = (TodoPackageNode)userObject;
final PackageElement packageElement = descriptor.getValue();
return packageElement != null ? packageElement.getPackage() : null;
}
return super.getSelectedElement(userObject);
}
@Override
public void addPackagesToChildren(final ArrayList<AbstractTreeNode> children, final Module module, final TodoTreeBuilder builder) {
Project project = getProject();
final PsiManager psiManager = PsiManager.getInstance(project);
final List<VirtualFile> sourceRoots = new ArrayList<>();
if (module == null) {
final ProjectRootManager projectRootManager = ProjectRootManager.getInstance(project);
ContainerUtil.addAll(sourceRoots, projectRootManager.getContentSourceRoots());
} else {
ModuleRootManager moduleRootManager = ModuleRootManager.getInstance(module);
ContainerUtil.addAll(sourceRoots, moduleRootManager.getSourceRoots());
}
final Set<PsiPackage> topLevelPackages = new HashSet<>();
for (final VirtualFile root : sourceRoots) {
final PsiDirectory directory = psiManager.findDirectory(root);
if (directory == null) {
continue;
}
final PsiPackage directoryPackage = JavaDirectoryService.getInstance().getPackage(directory);
if (directoryPackage == null || PackageUtil.isPackageDefault(directoryPackage)) {
// add subpackages
final PsiDirectory[] subdirectories = directory.getSubdirectories();
for (PsiDirectory subdirectory : subdirectories) {
final PsiPackage aPackage = JavaDirectoryService.getInstance().getPackage(subdirectory);
if (aPackage != null && !PackageUtil.isPackageDefault(aPackage)) {
topLevelPackages.add(aPackage);
} else {
final Iterator<PsiFile> files = builder.getFiles(subdirectory);
if (!files.hasNext()) continue;
TodoDirNode dirNode = new TodoDirNode(project, subdirectory, builder);
if (!children.contains(dirNode)){
children.add(dirNode);
}
}
}
// add non-dir items
final Iterator<PsiFile> filesUnderDirectory = builder.getFilesUnderDirectory(directory);
for (;filesUnderDirectory.hasNext();) {
final PsiFile file = filesUnderDirectory.next();
TodoFileNode todoFileNode = new TodoFileNode(project, file, builder, false);
if (!children.contains(todoFileNode)){
children.add(todoFileNode);
}
}
}
else {
// this is the case when a source root has pakage prefix assigned
topLevelPackages.add(directoryPackage);
}
}
GlobalSearchScope scope = module != null ? GlobalSearchScope.moduleScope(module) : GlobalSearchScope.projectScope(project);
ArrayList<PsiPackage> packages = new ArrayList<>();
for (PsiPackage psiPackage : topLevelPackages) {
final PsiPackage aPackage = findNonEmptyPackage(psiPackage, module, project, builder, scope);
if (aPackage != null){
packages.add(aPackage);
}
}
for (PsiPackage psiPackage : packages) {
if (!builder.getTodoTreeStructure().getIsFlattenPackages()) {
PackageElement element = new PackageElement(module, psiPackage, false);
TodoPackageNode packageNode = new TodoPackageNode(project, element, builder, psiPackage.getQualifiedName());
if (!children.contains(packageNode)) {
children.add(packageNode);
}
} else {
Set<PsiPackage> allPackages = new HashSet<>();
traverseSubPackages(psiPackage, module, builder, project, allPackages);
for (PsiPackage aPackage : allPackages) {
TodoPackageNode packageNode = new TodoPackageNode(project, new PackageElement(module, aPackage, false), builder);
if (!children.contains(packageNode)) {
children.add(packageNode);
}
}
}
}
final List<VirtualFile> roots = collectContentRoots(module);
roots.removeAll(sourceRoots);
addDirsToChildren(roots, children, builder);
}
@Nullable
public static PsiPackage findNonEmptyPackage(PsiPackage rootPackage, Module module, Project project, TodoTreeBuilder builder, GlobalSearchScope scope){
if (!isPackageEmpty(new PackageElement(module, rootPackage, false), builder, project)){
return rootPackage;
}
final PsiPackage[] subPackages = rootPackage.getSubPackages(scope);
PsiPackage suggestedNonEmptyPackage = null;
int count = 0;
for (PsiPackage aPackage : subPackages) {
if (!isPackageEmpty(new PackageElement(module, aPackage, false), builder, project)){
if (++ count > 1) return rootPackage;
suggestedNonEmptyPackage = aPackage;
}
}
for (PsiPackage aPackage : subPackages) {
if (aPackage != suggestedNonEmptyPackage) {
PsiPackage subPackage = findNonEmptyPackage(aPackage, module, project, builder, scope);
if (subPackage != null){
if (count > 0){
return rootPackage;
} else {
count ++;
suggestedNonEmptyPackage = subPackage;
}
}
}
}
return suggestedNonEmptyPackage;
}
private static void traverseSubPackages(PsiPackage psiPackage, Module module, TodoTreeBuilder builder, Project project, Set<PsiPackage> packages){
if (!isPackageEmpty(new PackageElement(module, psiPackage, false), builder, project)){
packages.add(psiPackage);
}
GlobalSearchScope scope = module != null ? GlobalSearchScope.moduleScope(module) : GlobalSearchScope.projectScope(project);
final PsiPackage[] subPackages = psiPackage.getSubPackages(scope);
for (PsiPackage subPackage : subPackages) {
traverseSubPackages(subPackage, module, builder, project, packages);
}
}
private static boolean isPackageEmpty(PackageElement packageElement, TodoTreeBuilder builder, Project project) {
if (packageElement == null) return true;
final PsiPackage psiPackage = packageElement.getPackage();
final Module module = packageElement.getModule();
GlobalSearchScope scope = module != null ? GlobalSearchScope.moduleScope(module) : GlobalSearchScope.projectScope(project);
final PsiDirectory[] directories = psiPackage.getDirectories(scope);
boolean isEmpty = true;
for (PsiDirectory psiDirectory : directories) {
isEmpty &= builder.isDirectoryEmpty(psiDirectory);
}
return isEmpty;
}
}