| /******************************************************************************* |
| * Copyright (c) 2016 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: |
| * - Mickael Istria (Red Hat Inc.) |
| *******************************************************************************/ |
| package org.eclipse.ui.internal.genericeditor; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.contentassist.ICompletionProposal; |
| import org.eclipse.jface.text.contentassist.IContentAssistProcessor; |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| import org.eclipse.jface.text.contentassist.IContextInformationValidator; |
| |
| /** |
| * A content assist processor that delegates all content assist |
| * operations to children provided in constructor and aggregates |
| * the results. |
| * |
| * @since 1.0 |
| */ |
| public class CompositeContentAssistProcessor implements IContentAssistProcessor { |
| |
| private List<IContentAssistProcessor> fContentAssistProcessors; |
| |
| /** |
| * Constructor |
| * @param contentAssistProcessors the children that will actually populate the output |
| * of this content assist processor. |
| */ |
| public CompositeContentAssistProcessor(List<IContentAssistProcessor> contentAssistProcessors) { |
| fContentAssistProcessors= contentAssistProcessors; |
| } |
| |
| @Override |
| public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) { |
| List<ICompletionProposal> res = new ArrayList<>(); |
| for (IContentAssistProcessor processor : this.fContentAssistProcessors) { |
| ICompletionProposal[] proposals = processor.computeCompletionProposals(viewer, offset); |
| if (proposals != null) { |
| res.addAll(Arrays.asList(proposals)); |
| } |
| } |
| return res.toArray(new ICompletionProposal[res.size()]); |
| } |
| |
| @Override |
| public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) { |
| List<IContextInformation> res = new ArrayList<>(); |
| for (IContentAssistProcessor processor : this.fContentAssistProcessors) { |
| res.addAll(Arrays.asList(processor.computeContextInformation(viewer, offset))); |
| } |
| return res.toArray(new IContextInformation[res.size()]); |
| } |
| |
| @Override |
| public char[] getCompletionProposalAutoActivationCharacters() { |
| Set<Character> res = new HashSet<>(); |
| for (IContentAssistProcessor processor : this.fContentAssistProcessors) { |
| char[] chars = processor.getCompletionProposalAutoActivationCharacters(); |
| if (chars != null) { |
| for (char c : chars) { |
| res.add(Character.valueOf(c)); |
| } |
| } |
| } |
| return toCharArray(res); |
| } |
| |
| private static char[] toCharArray(Set<Character> chars) { |
| char[] res = new char[chars.size()]; |
| int i = 0; |
| for (Character c : chars) { |
| res[i] = c.charValue(); |
| i++; |
| } |
| return res; |
| } |
| |
| @Override |
| public char[] getContextInformationAutoActivationCharacters() { |
| Set<Character> res = new HashSet<>(); |
| for (IContentAssistProcessor processor : this.fContentAssistProcessors) { |
| char[] chars = processor.getContextInformationAutoActivationCharacters(); |
| if (chars != null) { |
| for (char c : chars) { |
| res.add(Character.valueOf(c)); |
| } |
| } |
| } |
| return toCharArray(res); |
| } |
| |
| @Override |
| public String getErrorMessage() { |
| StringBuilder res = new StringBuilder(); |
| for (IContentAssistProcessor processor : this.fContentAssistProcessors) { |
| String errorMessage = processor.getErrorMessage(); |
| if (errorMessage != null) { |
| res.append(errorMessage); |
| res.append('\n'); |
| } |
| } |
| if (res.length() == 0) { |
| return null; |
| } |
| return res.toString(); |
| } |
| |
| @Override |
| public IContextInformationValidator getContextInformationValidator() { |
| return null; |
| } |
| |
| } |