| /******************************************************************************* |
| * Copyright (c) 2005, 2007 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| * Bjorn Freeman-Benson - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.examples.ui.pda.editor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.contentassist.CompletionProposal; |
| 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; |
| |
| public class PDAContentAssistProcessor implements IContentAssistProcessor { |
| |
| public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) { |
| int index = offset - 1; |
| StringBuffer prefix = new StringBuffer(); |
| IDocument document = viewer.getDocument(); |
| while (index > 0) { |
| try { |
| char prev = document.getChar(index); |
| if (Character.isWhitespace(prev)) { |
| break; |
| } |
| prefix.insert(0, prev); |
| index--; |
| } catch (BadLocationException e) { |
| } |
| } |
| |
| List proposals = new ArrayList(); |
| String[] keywords = PDAScanner.fgKeywords; |
| if (prefix.length() > 0) { |
| String word = prefix.toString(); |
| for (int i = 0; i < keywords.length; i++) { |
| String keyword = keywords[i]; |
| if (keyword.startsWith(word) && word.length() < keyword.length()) { |
| proposals.add(new CompletionProposal(keyword + " ", index + 1, offset - (index + 1), keyword.length() + 1)); |
| } |
| } |
| } else { |
| // propose all keywords |
| for (int i = 0; i < keywords.length; i++) { |
| String keyword = keywords[i]; |
| proposals.add(new CompletionProposal(keyword + " ", offset, 0, keyword.length() + 1)); |
| } |
| } |
| if (!proposals.isEmpty()) { |
| return (ICompletionProposal[]) proposals.toArray(new ICompletionProposal[proposals.size()]); |
| } |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#computeContextInformation(org.eclipse.jface.text.ITextViewer, int) |
| */ |
| public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getCompletionProposalAutoActivationCharacters() |
| */ |
| public char[] getCompletionProposalAutoActivationCharacters() { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationAutoActivationCharacters() |
| */ |
| public char[] getContextInformationAutoActivationCharacters() { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getErrorMessage() |
| */ |
| public String getErrorMessage() { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.text.contentassist.IContentAssistProcessor#getContextInformationValidator() |
| */ |
| public IContextInformationValidator getContextInformationValidator() { |
| return null; |
| } |
| |
| } |