/*
* Copyright 2000-2015 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.diff.actions;
import com.intellij.diff.DiffRequestFactory;
import com.intellij.diff.contents.DiffContent;
import com.intellij.diff.contents.DocumentContent;
import com.intellij.diff.requests.ContentDiffRequest;
import com.intellij.diff.requests.DiffRequest;
import com.intellij.diff.util.DiffUserDataKeys;
import com.intellij.diff.util.Side;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorFactory;
import com.intellij.openapi.fileEditor.ex.FileEditorManagerEx;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class CompareFileWithEditorAction extends BaseShowDiffAction {
@Override
protected boolean isAvailable(@NotNull AnActionEvent e) {
VirtualFile selectedFile = getSelectedFile(e);
if (selectedFile == null) {
return false;
}
VirtualFile currentFile = getEditingFile(e);
if (currentFile == null) {
return false;
}
if (!canCompare(selectedFile, currentFile)) {
return false;
}
return true;
}
@Nullable
private static VirtualFile getSelectedFile(@NotNull AnActionEvent e) {
VirtualFile[] array = e.getData(CommonDataKeys.VIRTUAL_FILE_ARRAY);
if (array == null || array.length != 1 || array[0].isDirectory()) {
return null;
}
return array[0];
}
@Nullable
private static VirtualFile getEditingFile(@NotNull AnActionEvent e) {
Project project = e.getProject();
if (project == null) return null;
return FileEditorManagerEx.getInstanceEx(project).getCurrentFile();
}
private static boolean canCompare(@NotNull VirtualFile file1, @NotNull VirtualFile file2) {
return !file1.equals(file2) && hasContent(file1) && hasContent(file2);
}
@Nullable
@Override
protected DiffRequest getDiffRequest(@NotNull AnActionEvent e) {
Project project = e.getProject();
VirtualFile selectedFile = getSelectedFile(e);
VirtualFile currentFile = getEditingFile(e);
assert selectedFile != null && currentFile != null;
ContentDiffRequest request = DiffRequestFactory.getInstance().createFromFiles(project, selectedFile, currentFile);
DiffContent editorContent = request.getContents().get(1);
if (editorContent instanceof DocumentContent) {
Editor[] editors = EditorFactory.getInstance().getEditors(((DocumentContent)editorContent).getDocument());
if (editors.length != 0) {
request.putUserData(DiffUserDataKeys.SCROLL_TO_LINE, Pair.create(Side.RIGHT, editors[0].getCaretModel().getLogicalPosition().line));
}
}
return request;
}
}