/*
 * Copyright 2000-2013 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.jetbrains.python;

import com.intellij.ide.IconProvider;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiElement;
import com.intellij.util.PlatformIcons;
import org.jetbrains.annotations.NotNull;

import javax.swing.*;

/**
 * @author yole
 */
public class PyDirectoryIconProvider extends IconProvider {
  @Override
  public Icon getIcon(@NotNull PsiElement element, int flags) {
    if (element instanceof PsiDirectory) {
      final PsiDirectory directory = (PsiDirectory)element;
      if (directory.findFile(PyNames.INIT_DOT_PY) != null) {
        final VirtualFile vFile = directory.getVirtualFile();
        final VirtualFile root = ProjectRootManager.getInstance(directory.getProject()).getFileIndex().getSourceRootForFile(vFile);
        if (!Comparing.equal(root, vFile)) {
          return PlatformIcons.PACKAGE_ICON;
        }
      }
    }
    return null;
  }
}