/*
* Copyright 2003-2011 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 jetbrains.mps.plugin;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DataKeys;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
public class PluginUtil {
public static PsiElement getCurrentElement(AnActionEvent e) {
Editor editor = e.getData(DataKeys.EDITOR);
if (editor == null) return null;
Project project = e.getData(DataKeys.PROJECT);
assert project != null;
PsiFile file = PsiDocumentManager.getInstance(project).getCachedPsiFile(editor.getDocument());
if (file == null) return null;
return file.findElementAt(editor.getCaretModel().getOffset());
}
@SuppressWarnings("unchecked")
public static <PE extends PsiElement> PE getElement(PsiElement current, Class<PE> elementClass) {
if (current == null) return null;
if (elementClass.isInstance(current)) {
return (PE) current;
}
if (current.getParent() == null) return null;
return getElement(current.getParent(), elementClass);
}
}