java/java-impl/src/com/intellij/ide/impl/PackagesPaneSelectInTarget.java

/*
 * 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;

import com.intellij.ide.SelectInContext;
import com.intellij.ide.SelectInManager;
import com.intellij.ide.StandardTargetWeights;
import com.intellij.ide.projectView.impl.PackageViewPane;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ProjectFileIndex;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFileSystemItem;
import com.intellij.psi.util.PsiUtilBase;

public class PackagesPaneSelectInTarget extends ProjectViewSelectInTarget {
  public PackagesPaneSelectInTarget(Project project) {
    super(project);
  }

  public String toString() {
    return SelectInManager.PACKAGES;
  }

  public boolean canSelect(PsiFileSystemItem file) {
    if (!super.canSelect(file)) return false;
    final VirtualFile vFile = PsiUtilBase.getVirtualFile(file);

    return canSelect(vFile);
  }

  private boolean canSelect(final VirtualFile vFile) {
    if (vFile != null && vFile.isValid()) {
      final ProjectFileIndex fileIndex = ProjectRootManager.getInstance(myProject).getFileIndex();
      return fileIndex.isInSourceContent(vFile) || isInLibraryContentOnly(vFile);
    }
    else {
      return false;
    }
  }

  public boolean isSubIdSelectable(String subId, SelectInContext context) {
    return canSelect(context);
  }

  private boolean isInLibraryContentOnly(final VirtualFile vFile) {
    if (vFile == null) {
      return false;
    }
    ProjectFileIndex projectFileIndex = ProjectRootManager.getInstance(myProject).getFileIndex();
    return (projectFileIndex.isInLibraryClasses(vFile) || projectFileIndex.isInLibrarySource(vFile)) && !projectFileIndex.isInSourceContent(vFile);
  }

  public String getMinorViewId() {
    return PackageViewPane.ID;
  }

  public float getWeight() {
    return StandardTargetWeights.PACKAGES_WEIGHT;
  }

  protected boolean canWorkWithCustomObjects() {
    return false;
  }
}