/*
* 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.ide.impl.dataRules;
import com.intellij.openapi.actionSystem.DataProvider;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
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.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiDirectoryContainer;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.usages.Usage;
import com.intellij.usages.UsageDataUtil;
import com.intellij.usages.UsageTarget;
import com.intellij.usages.UsageView;
import com.intellij.util.containers.ContainerUtil;
import java.util.ArrayList;
import java.util.HashSet;
public class VirtualFileArrayRule implements GetDataRule {
@Override
public Object getData(final DataProvider dataProvider) {
// Try to detect multiselection.
Project project = PlatformDataKeys.PROJECT_CONTEXT.getData(dataProvider);
if (project != null && !project.isDisposed()) {
return ProjectRootManager.getInstance(project).getContentRoots();
}
Module[] selectedModules = LangDataKeys.MODULE_CONTEXT_ARRAY.getData(dataProvider);
if (selectedModules != null && selectedModules.length > 0) {
return getFilesFromModules(selectedModules);
}
Module selectedModule = LangDataKeys.MODULE_CONTEXT.getData(dataProvider);
if (selectedModule != null && !selectedModule.isDisposed()) {
return ModuleRootManager.getInstance(selectedModule).getContentRoots();
}
PsiElement[] psiElements = LangDataKeys.PSI_ELEMENT_ARRAY.getData(dataProvider);
if (psiElements != null && psiElements.length != 0) {
return getFilesFromPsiElements(psiElements);
}
// VirtualFile -> VirtualFile[]
VirtualFile vFile = PlatformDataKeys.VIRTUAL_FILE.getData(dataProvider);
if (vFile != null) {
return new VirtualFile[]{vFile};
}
//
PsiFile psiFile = LangDataKeys.PSI_FILE.getData(dataProvider);
if (psiFile != null && psiFile.getVirtualFile() != null) {
return new VirtualFile[]{psiFile.getVirtualFile()};
}
PsiElement elem = LangDataKeys.PSI_ELEMENT.getData(dataProvider);
if (elem != null) {
return getFilesFromPsiElement(elem);
}
Usage[] usages = UsageView.USAGES_KEY.getData(dataProvider);
UsageTarget[] usageTargets = UsageView.USAGE_TARGETS_KEY.getData(dataProvider);
if (usages != null || usageTargets != null) {
return UsageDataUtil.provideVirtualFileArray(usages, usageTargets);
}
return null;
}
private static Object getFilesFromPsiElement(PsiElement elem) {
if (elem instanceof PsiFile) {
VirtualFile virtualFile = ((PsiFile)elem).getVirtualFile();
return virtualFile != null ? new VirtualFile[]{virtualFile} : null;
}
else if (elem instanceof PsiDirectory) {
return new VirtualFile[]{((PsiDirectory)elem).getVirtualFile()};
}
else {
PsiFile file = elem.getContainingFile();
return file != null && file.getVirtualFile() != null ? new VirtualFile[]{file.getVirtualFile()} : null;
}
}
private static Object getFilesFromPsiElements(PsiElement[] psiElements) {
HashSet<VirtualFile> files = new HashSet<VirtualFile>();
for (PsiElement elem : psiElements) {
if (elem instanceof PsiDirectory) {
files.add(((PsiDirectory)elem).getVirtualFile());
}
else if (elem instanceof PsiFile) {
VirtualFile virtualFile = ((PsiFile)elem).getVirtualFile();
if (virtualFile != null) {
files.add(virtualFile);
}
}
else if (elem instanceof PsiDirectoryContainer) {
PsiDirectory[] dirs = ((PsiDirectoryContainer)elem).getDirectories();
for (PsiDirectory dir : dirs) {
files.add(dir.getVirtualFile());
}
}
else {
PsiFile file = elem.getContainingFile();
if (file != null) {
VirtualFile virtualFile = file.getVirtualFile();
if (virtualFile != null) {
files.add(virtualFile);
}
}
}
}
VirtualFile[] result = VfsUtil.toVirtualFileArray(files);
files.clear();
return result;
}
private static Object getFilesFromModules(Module[] selectedModules) {
ArrayList<VirtualFile> result = new ArrayList<VirtualFile>();
for (Module selectedModule : selectedModules) {
ContainerUtil.addAll(result, ModuleRootManager.getInstance(selectedModule).getContentRoots());
}
return VfsUtil.toVirtualFileArray(result);
}
}