2 * Copyright 2000-2016 JetBrains s.r.o.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package com.intellij.refactoring.changeSignature.inplace;
18 import com.intellij.openapi.fileTypes.FileType;
19 import com.intellij.openapi.util.TextRange;
20 import com.intellij.psi.PsiElement;
21 import com.intellij.refactoring.changeSignature.ChangeInfo;
22 import org.jetbrains.annotations.NotNull;
23 import org.jetbrains.annotations.Nullable;
25 import java.util.List;
31 public interface LanguageChangeSignatureDetector<C extends ChangeInfo> {
33 @NotNull C createInitialChangeInfo(final @NotNull PsiElement element);
34 boolean ignoreChanges(PsiElement element);
35 @Nullable C createNextChangeInfo(String signature, @NotNull C currentInfo, boolean delegate);
37 void performChange(C changeInfo, @NotNull String oldText);
39 boolean isChangeSignatureAvailableOnElement(@NotNull PsiElement element, C currentInfo);
41 TextRange getHighlightingRange(@NotNull C changeInfo);
43 default @NotNull String extractSignature(@NotNull C initialChangeInfo) {
44 final TextRange signatureRange = getHighlightingRange(initialChangeInfo);
45 return signatureRange.shiftRight(-signatureRange.getStartOffset()).substring(initialChangeInfo.getMethod().getText());
48 default String getMethodSignaturePreview(C info, final List<TextRange> deleteRanges, final List<TextRange> newRanges) {
49 return extractSignature(info);
52 FileType getFileType();