PsiElementFromSelectionRule.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.dataRules;

import com.intellij.openapi.actionSystem.DataProvider;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.psi.PsiElement;

public class PsiElementFromSelectionRule implements GetDataRule {
  @Override
  public Object getData(DataProvider dataProvider) {
    final Object element = dataProvider.getData(PlatformDataKeys.SELECTED_ITEM.getName());
    if (element instanceof PsiElement) {
      PsiElement psiElement = (PsiElement)element;
      if (psiElement.isValid()) {
        return element;
      }
    }

    return null;
  }
}