| /* |
| * Copyright 2000-2014 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.psi; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.util.ClassExtension; |
| import com.intellij.openapi.util.TextRange; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author peter |
| */ |
| public class ElementManipulators extends ClassExtension<ElementManipulator> { |
| |
| @NonNls public static final String EP_NAME = "com.intellij.lang.elementManipulator"; |
| public static final ElementManipulators INSTANCE = new ElementManipulators(); |
| |
| |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.ElementManipulators"); |
| |
| private ElementManipulators() { |
| super(EP_NAME); |
| } |
| |
| /** |
| * @see #getNotNullManipulator(PsiElement) |
| */ |
| public static <T extends PsiElement> ElementManipulator<T> getManipulator(@NotNull T element) { |
| //noinspection unchecked |
| return INSTANCE.forClass(element.getClass()); |
| } |
| |
| public static int getOffsetInElement(@NotNull PsiElement element) { |
| final ElementManipulator<PsiElement> manipulator = getNotNullManipulator(element); |
| return manipulator.getRangeInElement(element).getStartOffset(); |
| } |
| |
| @NotNull |
| public static <T extends PsiElement> ElementManipulator<T> getNotNullManipulator(@NotNull T element) { |
| final ElementManipulator<T> manipulator = getManipulator(element); |
| LOG.assertTrue(manipulator != null, element.getClass().getName()); |
| return manipulator; |
| } |
| |
| public static TextRange getValueTextRange(@NotNull PsiElement element) { |
| final ElementManipulator<PsiElement> manipulator = getManipulator(element); |
| return manipulator == null ? TextRange.from(0, element.getTextLength()) : manipulator.getRangeInElement(element); |
| } |
| |
| @NotNull |
| public static String getValueText(@NotNull PsiElement element) { |
| final TextRange valueTextRange = getValueTextRange(element); |
| if (valueTextRange.isEmpty()) return ""; |
| |
| final String text = element.getText(); |
| if (valueTextRange.getEndOffset() > text.length()) { |
| LOG.error("Wrong range for " + element + " text: " + text + " range " + valueTextRange); |
| } |
| |
| return valueTextRange.substring(text); |
| } |
| |
| public static <T extends PsiElement> T handleContentChange(@NotNull T element, String text) { |
| final ElementManipulator<T> manipulator = getNotNullManipulator(element); |
| return manipulator.handleContentChange(element, text); |
| } |
| } |