| /******************************************************************************* |
| * Copyright (c) 2017 Red Hat Inc. and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Alexander Kurtakov - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.sh.internal.ui.text.hyperlink; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.Region; |
| import org.eclipse.jface.text.hyperlink.AbstractHyperlinkDetector; |
| import org.eclipse.jface.text.hyperlink.IHyperlink; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.ide.IDE; |
| import org.eclipse.ui.part.FileEditorInput; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| |
| public class SourceHyperlinkDetector extends AbstractHyperlinkDetector { |
| |
| private static final String SOURCE = "source"; |
| |
| @Override |
| public IHyperlink[] detectHyperlinks(ITextViewer textViewer, IRegion inputRegion, |
| boolean canShowMultipleHyperlinks) { |
| if ((inputRegion == null) || (textViewer == null)) { |
| return null; |
| } |
| try { |
| final IDocument doc = textViewer.getDocument(); |
| final int lineNumber = doc.getLineOfOffset(inputRegion.getOffset()); |
| final IRegion region = doc.getLineInformation(lineNumber); |
| final String line = doc.get(region.getOffset(), region.getLength()); |
| if ((line != null) && (line.length() != 0)) { |
| final IHyperlink link = checkLine(region.getOffset(), line); |
| if (link != null) { |
| return new IHyperlink[] { link }; |
| } |
| } |
| } catch (BadLocationException e) { |
| e.printStackTrace(); |
| } |
| return null; |
| } |
| |
| /** |
| * Checks if the specified line matches the <code>require</code> statement |
| * |
| * @param offset |
| * @param line |
| */ |
| private IHyperlink checkLine(int offset, final String line) { |
| int begin = 0; |
| int end = line.length(); |
| while ((begin < end) && Character.isWhitespace(line.charAt(begin))) { |
| ++begin; |
| } |
| while ((begin < end) && Character.isWhitespace(line.charAt(end - 1))) { |
| --end; |
| } |
| if (((begin + SOURCE.length()) < end) && line.startsWith(SOURCE, begin)) { |
| begin += SOURCE.length(); |
| while ((begin < end) && Character.isWhitespace(line.charAt(begin))) { |
| ++begin; |
| } |
| if (((begin + 2) < end) && (line.charAt(begin) == '(') && (line.charAt(end - 1) == ')')) { |
| ++begin; |
| --end; |
| while ((begin < end) && Character.isWhitespace(line.charAt(begin))) { |
| ++begin; |
| } |
| while ((begin < end) && Character.isWhitespace(line.charAt(end - 1))) { |
| --end; |
| } |
| } |
| |
| return createLink(offset, line, begin, end); |
| } |
| return null; |
| } |
| |
| /** |
| * Creates {@link IHyperlink} instance. |
| * |
| * This method is extracted to simplify testing. |
| * |
| * @param offset |
| * @param line |
| * @param begin |
| * @param end |
| * @return |
| */ |
| private IHyperlink createLink(int offset, final String line, int begin, int end) { |
| final ITextEditor editor = getAdapter(ITextEditor.class); |
| if (editor != null) { |
| final String requiredFile = line.substring(begin, end); |
| final Region region = new Region(offset + begin, end - begin); |
| IContainer container = ((FileEditorInput) getAdapter(ITextEditor.class).getEditorInput()).getFile() |
| .getParent(); |
| IResource resourceToOpen = container.findMember(requiredFile); |
| if ((resourceToOpen != null) && (resourceToOpen.getType() == IResource.FILE)) { |
| return new IHyperlink() { |
| |
| @Override |
| public void open() { |
| IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); |
| try { |
| IDE.openEditor(page, (IFile) resourceToOpen); |
| } catch (PartInitException e) { |
| } |
| |
| } |
| |
| @Override |
| public String getTypeLabel() { |
| return "Shell: source"; |
| } |
| |
| @Override |
| public String getHyperlinkText() { |
| return requiredFile; |
| } |
| |
| @Override |
| public IRegion getHyperlinkRegion() { |
| return region; |
| } |
| }; |
| } |
| } |
| return null; |
| } |
| |
| } |