| /* |
| * Copyright 2000-2012 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.openapi.diff.impl.external; |
| |
| import com.intellij.openapi.diff.DiffContent; |
| import com.intellij.openapi.diff.DiffRequest; |
| import com.intellij.openapi.diff.impl.DiffUtil; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author Konstantin Bulenkov |
| */ |
| class ExtCompareFiles extends BaseExternalTool { |
| public static final BaseExternalTool INSTANCE = new ExtCompareFiles(); |
| |
| private ExtCompareFiles() { |
| super(DiffManagerImpl.ENABLE_FILES, DiffManagerImpl.FILES_TOOL); |
| } |
| |
| public boolean isAvailable(@NotNull DiffRequest request) { |
| final DiffContent[] contents = request.getContents(); |
| for (DiffContent content : contents) { |
| final VirtualFile file = getLocalFile(content.getFile()); |
| if (file != null && file.isDirectory()) { |
| return false; |
| } |
| |
| if (LocalFileExternalizer.canExternalizeAsFile(file)) { |
| continue; |
| } |
| |
| if (DiffUtil.isWritable(content)) { |
| return false; |
| } |
| } |
| if (contents.length != 2) return false; |
| if (externalize(request, 0) == null) return false; |
| if (externalize(request, 1) == null) return false; |
| return true; |
| } |
| } |