| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * 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 |
| *******************************************************************************/ |
| package org.eclipse.team.internal.ccvs.ui.tags; |
| |
| import java.util.*; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.contentassist.*; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.text.*; |
| import org.eclipse.jface.text.contentassist.*; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Text; |
| import org.eclipse.team.internal.ccvs.core.CVSTag; |
| import org.eclipse.ui.contentassist.ContentAssistHandler; |
| |
| /** |
| * A content assist processor for tags for use with Text widgets. |
| */ |
| public class TagContentAssistProcessor implements ISubjectControlContentAssistProcessor { |
| |
| private FilteredTagList tags; |
| private Map<ImageDescriptor, Image> images = new HashMap<>(); |
| |
| public static void createContentAssistant(Text text, TagSource tagSource, int includeFlags) { |
| final TagContentAssistProcessor tagContentAssistProcessor = new TagContentAssistProcessor(tagSource, includeFlags); |
| text.addDisposeListener(e -> tagContentAssistProcessor.dispose()); |
| ContentAssistHandler.createHandlerForText(text, createSubjectContentAssistant(tagContentAssistProcessor)); |
| } |
| |
| private static SubjectControlContentAssistant createSubjectContentAssistant(IContentAssistProcessor processor) { |
| final SubjectControlContentAssistant contentAssistant= new SubjectControlContentAssistant(); |
| |
| contentAssistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE); |
| |
| //ContentAssistPreference.configure(contentAssistant, JavaPlugin.getDefault().getPreferenceStore()); |
| |
| contentAssistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE); |
| contentAssistant.setInformationControlCreator(parent -> new DefaultInformationControl(parent)); |
| |
| return contentAssistant; |
| } |
| |
| public TagContentAssistProcessor(TagSource tagSource, int includeFlags) { |
| tags = new FilteredTagList(tagSource, TagSource.convertIncludeFlaqsToTagTypes(includeFlags)); |
| } |
| |
| @Override |
| public ICompletionProposal[] computeCompletionProposals(IContentAssistSubjectControl contentAssistSubjectControl, int documentOffset) { |
| Control c = contentAssistSubjectControl.getControl(); |
| int docLength = contentAssistSubjectControl.getDocument().getLength(); |
| if (c instanceof Text) { |
| Text t = (Text)c; |
| String filter = t.getText(); |
| tags.setPattern(filter); |
| CVSTag[] matching = tags.getMatchingTags(); |
| if (matching.length > 0) { |
| List<CompletionProposal> proposals = new ArrayList<>(); |
| for (int i = 0; i < matching.length; i++) { |
| CVSTag tag = matching[i]; |
| String name = tag.getName(); |
| ImageDescriptor desc = TagElement.getImageDescriptor(tag); |
| Image image = null; |
| if (desc != null) { |
| image = images.get(desc); |
| if (image == null) { |
| image = desc.createImage(); |
| images.put(desc, image); |
| } |
| } |
| CompletionProposal proposal = new CompletionProposal(name, 0, docLength, name.length(), image, name, null, null); |
| proposals.add(proposal); |
| } |
| return proposals.toArray(new ICompletionProposal[proposals.size()]); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public IContextInformation[] computeContextInformation(IContentAssistSubjectControl contentAssistSubjectControl, int documentOffset) { |
| return null; |
| } |
| |
| @Override |
| public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) { |
| Assert.isTrue(false, "ITextViewer not supported"); //$NON-NLS-1$ |
| return null; |
| } |
| |
| @Override |
| public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) { |
| return null; |
| } |
| |
| @Override |
| public char[] getCompletionProposalAutoActivationCharacters() { |
| return null; |
| } |
| |
| @Override |
| public char[] getContextInformationAutoActivationCharacters() { |
| return null; |
| } |
| |
| @Override |
| public String getErrorMessage() { |
| return null; |
| } |
| |
| @Override |
| public IContextInformationValidator getContextInformationValidator() { |
| return null; |
| } |
| |
| /** |
| * Dispose of any images created by the assistant |
| */ |
| public void dispose() { |
| for (Iterator iter = images.values().iterator(); iter.hasNext();) { |
| Image image = (Image) iter.next(); |
| image.dispose(); |
| } |
| } |
| |
| } |