| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * 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.google.idea.blaze.base.buildmodifier; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.command.CommandProcessor; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.DocumentRunnable; |
| import com.intellij.openapi.fileEditor.FileDocumentManager; |
| import com.intellij.openapi.fileEditor.FileDocumentManagerAdapter; |
| import com.intellij.openapi.vfs.VirtualFile; |
| |
| /** |
| * Runs the buildifier command on file save. |
| */ |
| public class FileSaveHandler extends FileDocumentManagerAdapter { |
| |
| @Override |
| public void beforeDocumentSaving(final Document document) { |
| if (!document.isWritable()) { |
| return; |
| } |
| FileDocumentManager fileDocumentManager = FileDocumentManager.getInstance(); |
| VirtualFile file = fileDocumentManager.getFile(document); |
| if (file == null || !file.isValid()) { |
| return; |
| } |
| |
| if (!isBuildFile(file)) { |
| return; |
| } |
| int lines = document.getLineCount(); |
| if (lines > 0) { |
| String text = document.getText(); |
| String formattedText = BuildFileFormatter.formatText(text); |
| updateDocument(document, formattedText); |
| } |
| } |
| |
| private void updateDocument(final Document document, final String formattedContent) { |
| ApplicationManager.getApplication().runWriteAction(new DocumentRunnable(document, null) { |
| @Override |
| public void run() { |
| CommandProcessor.getInstance().runUndoTransparentAction(() -> document.setText(formattedContent)); |
| } |
| }); |
| } |
| |
| private static boolean isBuildFile(VirtualFile file) { |
| return file.getName().equals("BUILD"); |
| } |
| } |