1 /**********************************************************************
2 Copyright (c) 2000, 2002 IBM Corp. and others.
3 All rights reserved. This program and the accompanying materials
4 are made available under the terms of the Common Public License v1.0
5 which accompanies this distribution, and is available at
6 http://www.eclipse.org/legal/cpl-v10.html
9 IBM Corporation - Initial implementation
10 Klaus Hartlage - www.eclipseproject.de
11 **********************************************************************/
12 package net.sourceforge.phpeclipse.phpeditor.php;
14 import java.util.ArrayList;
15 import java.util.Arrays;
16 import java.util.List;
18 import net.sourceforge.phpdt.internal.corext.template.ContextType;
19 import net.sourceforge.phpdt.internal.corext.template.ContextTypeRegistry;
20 import net.sourceforge.phpdt.internal.ui.text.java.IPHPCompletionProposal;
21 import net.sourceforge.phpdt.internal.ui.text.java.PHPCompletionProposalComparator;
22 import net.sourceforge.phpdt.internal.ui.text.template.TemplateEngine;
24 import org.eclipse.jface.text.IDocument;
25 import org.eclipse.jface.text.ITextViewer;
26 import org.eclipse.jface.text.TextPresentation;
27 import org.eclipse.jface.text.contentassist.ICompletionProposal;
28 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
29 import org.eclipse.jface.text.contentassist.IContextInformation;
30 import org.eclipse.jface.text.contentassist.IContextInformationExtension;
31 import org.eclipse.jface.text.contentassist.IContextInformationPresenter;
32 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
33 import org.eclipse.swt.graphics.Image;
36 * HTML completion processor.
38 public class HTMLCompletionProcessor implements IContentAssistProcessor {
41 * Simple content assist tip closer. The tip is valid in a range
42 * of 5 characters around its popup location.
44 protected static class Validator implements IContextInformationValidator, IContextInformationPresenter {
46 protected int fInstallOffset;
49 * @see IContextInformationValidator#isContextInformationValid(int)
51 public boolean isContextInformationValid(int offset) {
52 return Math.abs(fInstallOffset - offset) < 5;
56 * @see IContextInformationValidator#install(IContextInformation, ITextViewer, int)
58 public void install(IContextInformation info, ITextViewer viewer, int offset) {
59 fInstallOffset = offset;
63 * @see org.eclipse.jface.text.contentassist.IContextInformationPresenter#updatePresentation(int, TextPresentation)
65 public boolean updatePresentation(int documentPosition, TextPresentation presentation) {
70 private static class ContextInformationWrapper implements IContextInformation, IContextInformationExtension {
72 private final IContextInformation fContextInformation;
73 private int fPosition;
75 public ContextInformationWrapper(IContextInformation contextInformation) {
76 fContextInformation = contextInformation;
80 * @see IContextInformation#getContextDisplayString()
82 public String getContextDisplayString() {
83 return fContextInformation.getContextDisplayString();
87 * @see IContextInformation#getImage()
89 public Image getImage() {
90 return fContextInformation.getImage();
94 * @see IContextInformation#getInformationDisplayString()
96 public String getInformationDisplayString() {
97 return fContextInformation.getInformationDisplayString();
101 * @see IContextInformationExtension#getContextInformationPosition()
103 public int getContextInformationPosition() {
107 public void setContextInformationPosition(int position) {
108 fPosition = position;
112 protected IContextInformationValidator fValidator = new Validator();
113 private TemplateEngine fTemplateEngine;
114 private char[] fProposalAutoActivationSet;
115 private PHPCompletionProposalComparator fComparator;
116 private int fNumberOfComputedResults = 0;
118 public HTMLCompletionProcessor() {
120 ContextType contextType = ContextTypeRegistry.getInstance().getContextType("html"); //$NON-NLS-1$
121 if (contextType != null)
122 fTemplateEngine = new TemplateEngine(contextType);
124 fComparator = new PHPCompletionProposalComparator();
128 * Method declared on IContentAssistProcessor
130 public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int documentOffset) {
131 int contextInformationPosition = guessContextInformationPosition(viewer, documentOffset);
132 return internalComputeCompletionProposals(viewer, documentOffset, contextInformationPosition);
135 private ICompletionProposal[] internalComputeCompletionProposals(ITextViewer viewer, int offset, int contextOffset) {
136 IDocument document = viewer.getDocument();
138 if (fTemplateEngine != null) {
139 ICompletionProposal[] results;
141 fTemplateEngine.reset();
142 fTemplateEngine.complete(viewer, offset); //, unit);
143 // } catch (JavaModelException x) {
144 // Shell shell= viewer.getTextWidget().getShell();
145 // ErrorDialog.openError(shell, JavaTextMessages.getString("CompletionProcessor.error.accessing.title"), JavaTextMessages.getString("CompletionProcessor.error.accessing.message"), x.getStatus()); //$NON-NLS-2$ //$NON-NLS-1$
148 IPHPCompletionProposal[] templateResults = fTemplateEngine.getResults();
150 // concatenate arrays
151 IPHPCompletionProposal[] total;
152 total = new IPHPCompletionProposal[templateResults.length];
153 System.arraycopy(templateResults, 0, total, 0, templateResults.length);
156 fNumberOfComputedResults = (results == null ? 0 : results.length);
158 * Order here and not in result collector to make sure that the order
159 * applies to all proposals and not just those of the compilation unit.
161 return order(results);
163 return new IPHPCompletionProposal[0];
166 private int guessContextInformationPosition(ITextViewer viewer, int offset) {
167 int contextPosition = offset;
168 IDocument document = viewer.getDocument();
169 return contextPosition;
173 * Method declared on IContentAssistProcessor
175 // public IContextInformation[] computeContextInformation(ITextViewer viewer, int documentOffset) {
176 // IContextInformation[] result = new IContextInformation[5];
177 // for (int i = 0; i < result.length; i++)
178 // result[i] = new ContextInformation(MessageFormat.format(PHPEditorMessages.getString("CompletionProcessor.ContextInfo.display.pattern"), new Object[] { new Integer(i), new Integer(documentOffset)}), //$NON-NLS-1$
179 // MessageFormat.format(PHPEditorMessages.getString("CompletionProcessor.ContextInfo.value.pattern"), new Object[] { new Integer(i), new Integer(documentOffset - 5), new Integer(documentOffset + 5)})); //$NON-NLS-1$
183 * @see IContentAssistProcessor#computeContextInformation(ITextViewer, int)
185 public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
186 int contextInformationPosition = guessContextInformationPosition(viewer, offset);
187 List result = addContextInformations(viewer, contextInformationPosition);
188 return (IContextInformation[]) result.toArray(new IContextInformation[result.size()]);
191 private List addContextInformations(ITextViewer viewer, int offset) {
192 ICompletionProposal[] proposals = internalComputeCompletionProposals(viewer, offset, -1);
194 List result = new ArrayList();
195 for (int i = 0; i < proposals.length; i++) {
196 IContextInformation contextInformation = proposals[i].getContextInformation();
197 if (contextInformation != null) {
198 ContextInformationWrapper wrapper = new ContextInformationWrapper(contextInformation);
199 wrapper.setContextInformationPosition(offset);
207 * Order the given proposals.
209 private ICompletionProposal[] order(ICompletionProposal[] proposals) {
210 Arrays.sort(proposals, fComparator);
215 * Tells this processor to order the proposals alphabetically.
217 * @param order <code>true</code> if proposals should be ordered.
219 public void orderProposalsAlphabetically(boolean order) {
220 fComparator.setOrderAlphabetically(order);
224 * @see IContentAssistProcessor#getCompletionProposalAutoActivationCharacters()
226 public char[] getCompletionProposalAutoActivationCharacters() {
227 return fProposalAutoActivationSet;
231 * Sets this processor's set of characters triggering the activation of the
232 * completion proposal computation.
234 * @param activationSet the activation set
236 public void setCompletionProposalAutoActivationCharacters(char[] activationSet) {
237 fProposalAutoActivationSet= activationSet;
241 * Method declared on IContentAssistProcessor
243 public char[] getContextInformationAutoActivationCharacters() {
249 * Method declared on IContentAssistProcessor
251 public IContextInformationValidator getContextInformationValidator() {
256 * Method declared on IContentAssistProcessor
258 public String getErrorMessage() {