| /******************************************************************************* |
| * Copyright (c) 2000, 2019 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Pivotal Inc - Adapted for use in quicksearch |
| *******************************************************************************/ |
| package org.eclipse.text.quicksearch.internal.util; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.filebuffers.FileBuffers; |
| import org.eclipse.core.filebuffers.ITextFileBuffer; |
| import org.eclipse.core.filebuffers.ITextFileBufferManager; |
| import org.eclipse.core.filebuffers.LocationKind; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.text.quicksearch.internal.ui.QuickSearchActivator; |
| import org.eclipse.ui.IEditorInput; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.IEditorReference; |
| import org.eclipse.ui.IFileEditorInput; |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.editors.text.TextFileDocumentProvider; |
| import org.eclipse.ui.texteditor.IDocumentProvider; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| |
| /** |
| * Useful utilities (private methods) copied from org.eclipse.search.internal.core.text.TextSearchVisitor |
| * and rearanged / massaged to be a more reusable utility class. |
| * <p> |
| * These utilities allow us to access the contents of dirty editors so we can search/read in them as though they |
| * are already saved but without actually requiring the user to save them. |
| * |
| * @author Kris De Volder |
| */ |
| public class DocumentFetcher { |
| |
| private Map<IFile, IDocument> dirtyEditors; |
| |
| //Simple cache remembers the last fetched file and document. |
| private IFile lastFile = null; |
| private IDocument lastDocument = null; |
| |
| IDocumentProvider provider = new TextFileDocumentProvider(); |
| |
| public DocumentFetcher() { |
| if (PlatformUI.isWorkbenchRunning()) { |
| dirtyEditors = evalNonFileBufferDocuments(); |
| } else { |
| dirtyEditors = Collections.emptyMap(); |
| } |
| } |
| |
| /** |
| * Obtains a {@link IDocument} containing the contents of a |
| * {@link IFile}. Two different scenarios are supported depending |
| * on whether or not the file is currently opened in a editor. |
| * <p> |
| * If the IFile is opened in an editor, then the document reflects |
| * the editor contents (including any not-yet saved edits). |
| * <p> |
| * If the file is not open, then the document just reflects the |
| * contents of the file. |
| * |
| * @param file |
| * @return Document containing the contents of the file or editor buffer, |
| * or null if the content can not be found (it exists neither as a editor |
| * buffer nor corresponds to an existing file in the workspace. |
| */ |
| public IDocument getDocument(IFile file) { |
| if (file==lastFile) { |
| return lastDocument; |
| } |
| lastFile = file; |
| lastDocument = dirtyEditors.get(file); |
| if (lastDocument==null) { |
| lastDocument = getOpenDocument(file); |
| if (lastDocument==null) { |
| lastDocument = getClosedDocument(file); |
| } |
| } |
| return lastDocument; |
| } |
| |
| private IDocument getOpenDocument(IFile file) { |
| ITextFileBufferManager bufferManager= FileBuffers.getTextFileBufferManager(); |
| ITextFileBuffer textFileBuffer= bufferManager.getTextFileBuffer(file.getFullPath(), LocationKind.IFILE); |
| if (textFileBuffer != null) { |
| return textFileBuffer.getDocument(); |
| } |
| return null; |
| } |
| |
| private IDocument getClosedDocument(IFile file) { |
| //No in the manager yet. Try to create a temporary buffer then remove it again. |
| ITextFileBufferManager bufferManager = FileBuffers.getTextFileBufferManager(); |
| IPath location = file.getFullPath(); //Must use workspace location, not fs location for API below. |
| ITextFileBuffer buffer = null; |
| try { |
| bufferManager.connect(location, LocationKind.IFILE, new NullProgressMonitor()); |
| buffer = bufferManager.getTextFileBuffer(location, LocationKind.IFILE); |
| if (buffer!=null) { |
| return buffer.getDocument(); |
| } |
| } catch (Throwable e) { |
| QuickSearchActivator.log(e); |
| } finally { |
| try { |
| bufferManager.disconnect(location, LocationKind.IFILE, new NullProgressMonitor()); |
| } catch (CoreException e) { |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @return returns a map from IFile to IDocument for all open, dirty editors. |
| */ |
| private Map<IFile, IDocument> evalNonFileBufferDocuments() { |
| Map<IFile, IDocument> result= new HashMap<IFile, IDocument>(); |
| IWorkbench workbench= PlatformUI.getWorkbench(); |
| IWorkbenchWindow[] windows= workbench.getWorkbenchWindows(); |
| for (int i= 0; i < windows.length; i++) { |
| IWorkbenchPage[] pages= windows[i].getPages(); |
| for (int x= 0; x < pages.length; x++) { |
| IEditorReference[] editorRefs= pages[x].getEditorReferences(); |
| for (int z= 0; z < editorRefs.length; z++) { |
| IEditorPart ep= editorRefs[z].getEditor(false); |
| if (ep instanceof ITextEditor && ep.isDirty()) { // only dirty editors |
| evaluateTextEditor(result, ep); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| private void evaluateTextEditor(Map<IFile, IDocument> result, IEditorPart ep) { |
| IEditorInput input= ep.getEditorInput(); |
| if (input instanceof IFileEditorInput) { |
| IFile file= ((IFileEditorInput) input).getFile(); |
| if (!result.containsKey(file)) { // take the first editor found |
| ITextFileBufferManager bufferManager= FileBuffers.getTextFileBufferManager(); |
| ITextFileBuffer textFileBuffer= bufferManager.getTextFileBuffer(file.getFullPath(), LocationKind.IFILE); |
| if (textFileBuffer != null) { |
| // file buffer has precedence |
| result.put(file, textFileBuffer.getDocument()); |
| } else { |
| // use document provider |
| IDocument document= ((ITextEditor) ep).getDocumentProvider().getDocument(input); |
| if (document != null) { |
| result.put(file, document); |
| } |
| } |
| } |
| } |
| } |
| |
| } |