| /* |
| * Copyright 2000-2011 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 com.siyeh.ipp.psiutils; |
| |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.SelectionModel; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.openapi.util.UnfairTextRange; |
| import com.intellij.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * @author Konstantin Bulenkov |
| */ |
| public class PsiSelectionSearcher { |
| private PsiSelectionSearcher() { |
| } |
| |
| /** |
| * Searches elements in selection |
| * |
| * @param editor editor to get text selection |
| * @param project Project |
| * @param filter PsiElement filter, e.g. PsiMethodCallExpression.class |
| * @param searchChildrenOfFound if true, visitor will look for matching elements in the children of a found element, otherwise will not look inside found element. |
| * @param <T> type based on PsiElement type |
| * @return elements in selection |
| */ |
| @NotNull |
| public static <T extends PsiElement> List<T> searchElementsInSelection(Editor editor, |
| Project project, |
| final Class<T> filter, |
| final boolean searchChildrenOfFound) { |
| final SelectionModel selectionModel = editor.getSelectionModel(); |
| if (!selectionModel.hasSelection()) { |
| return Collections.emptyList(); |
| } |
| final TextRange selection = new UnfairTextRange(selectionModel.getSelectionStart(), selectionModel.getSelectionEnd()); |
| final PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument()); |
| if (file == null || file instanceof PsiCompiledElement) { |
| return Collections.emptyList(); |
| } |
| final List<T> results = new ArrayList<T>(); |
| |
| final PsiElementVisitor visitor = new JavaRecursiveElementWalkingVisitor() { |
| @Override |
| public void visitElement(PsiElement element) { |
| if (!selection.intersects(element.getTextRange())) { |
| return; |
| } |
| if (filter.isAssignableFrom(element.getClass())) { |
| results.add((T)element); |
| if (!searchChildrenOfFound) { |
| return; |
| } |
| } |
| super.visitElement(element); |
| } |
| }; |
| |
| file.accept(visitor); |
| return results; |
| } |
| } |