| /* |
| * Copyright 2000-2009 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.ide.highlighter.ArchiveFileType; |
| import com.intellij.openapi.Disposable; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.diff.*; |
| import com.intellij.openapi.fileTypes.FileType; |
| import com.intellij.openapi.fileTypes.UIBasedFileType; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.awt.*; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| class CompositeDiffTool implements DiffTool { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.diff.impl.external.CompositeDiffTool"); |
| private final List<DiffTool> myTools; |
| |
| public CompositeDiffTool(List<DiffTool> tools) { |
| myTools = new ArrayList<DiffTool>(tools); |
| } |
| |
| public void show(DiffRequest data) { |
| checkDiffData(data); |
| DiffTool tool = chooseTool(data); |
| if (tool != null) tool.show(data); |
| else LOG.error("No diff tool found which is able to handle request " + data); |
| } |
| |
| public boolean canShow(DiffRequest data) { |
| checkDiffData(data); |
| return chooseTool(data) != null; |
| } |
| |
| @Override |
| public DiffViewer createComponent(String title, DiffRequest request, Window window, @NotNull Disposable parentDisposable) { |
| // should not be called for it |
| throw new IllegalStateException(); |
| } |
| |
| @Nullable |
| private DiffTool chooseTool(DiffRequest data) { |
| final DiffContent[] contents = data.getContents(); |
| |
| if (contents.length == 2) { |
| final FileType type1 = contents[0].getContentType(); |
| final FileType type2 = contents[1].getContentType(); |
| if (type1 == type2 && type1 instanceof UIBasedFileType) { |
| return BinaryDiffTool.INSTANCE; |
| } |
| |
| //todo[kb] register or not this instance in common diff tools ? |
| if (type1 == type2 && type1 instanceof ArchiveFileType) { |
| return ArchiveDiffTool.INSTANCE; |
| } |
| } |
| |
| for (DiffTool tool : myTools) { |
| if (tool.canShow(data)) return tool; |
| } |
| return null; |
| } |
| |
| private static void checkDiffData(@NotNull DiffRequest data) { |
| DiffContent[] contents = data.getContents(); |
| for (DiffContent content : contents) { |
| LOG.assertTrue(content != null, "Null content in diff request"); |
| } |
| } |
| } |