| /******************************************************************************* |
| * Copyright (c) 2015 QNX Software Systems 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 |
| *******************************************************************************/ |
| package org.eclipse.cdt.internal.qt.ui.editor; |
| |
| import java.io.File; |
| import java.util.Collection; |
| |
| import javax.script.ScriptException; |
| |
| import org.eclipse.cdt.internal.qt.ui.Activator; |
| import org.eclipse.cdt.qt.core.IQMLAnalyzer; |
| import org.eclipse.cdt.qt.core.QMLTernCompletion; |
| 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; |
| import org.eclipse.ui.IFileEditorInput; |
| |
| public class QMLContentAssistProcessor implements IContentAssistProcessor { |
| private static final IContextInformation[] NO_CONTEXTS = {}; |
| private static final ICompletionProposal[] NO_COMPLETIONS = {}; |
| |
| private final IQMLAnalyzer analyzer = Activator.getService(IQMLAnalyzer.class); |
| private final QMLEditor editor; |
| |
| public QMLContentAssistProcessor(QMLEditor editor) { |
| this.editor = editor; |
| } |
| |
| @Override |
| public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) { |
| if (analyzer == null || !analyzer.isSupported()) { |
| return NO_COMPLETIONS; |
| } |
| IDocument document = viewer.getDocument(); |
| String prefix = lastWord(document, offset); |
| // Save the file |
| IFileEditorInput fileInput = (IFileEditorInput) editor.getEditorInput(); |
| String fileName = new File(fileInput.getFile().getLocationURI()).getAbsolutePath(); |
| |
| try { |
| String contents = document.get(); |
| Collection<QMLTernCompletion> completions = analyzer.getCompletions(fileName, contents, offset); |
| if (!completions.isEmpty()) { |
| ICompletionProposal[] proposals = new ICompletionProposal[completions.size()]; |
| int i = 0; |
| for (QMLTernCompletion completion : completions) { |
| String name = completion.getName(); |
| String type = completion.getType(); |
| String displayString = name; |
| if (type != null) { |
| displayString += " : " + completion.getType(); //$NON-NLS-1$ |
| } |
| proposals[i++] = new CompletionProposal(name, offset - prefix.length(), prefix.length(), |
| name.length(), null, displayString, null, completion.getOrigin()); |
| } |
| return proposals; |
| } |
| } catch (NoSuchMethodException | ScriptException e) { |
| Activator.log(e); |
| } |
| return NO_COMPLETIONS; |
| } |
| |
| private String lastWord(IDocument document, int offset) { |
| try { |
| for (int n = offset - 1; n >= 0; n--) { |
| char c = document.getChar(n); |
| if (!Character.isJavaIdentifierPart(c)) { |
| return document.get(n + 1, offset - n - 1); |
| } |
| } |
| return document.get(0, offset); |
| } catch (BadLocationException e) { |
| Activator.log(e); |
| } |
| return ""; //$NON-NLS-1$ |
| } |
| |
| @Override |
| public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) { |
| return NO_CONTEXTS; |
| } |
| |
| @Override |
| public char[] getCompletionProposalAutoActivationCharacters() { |
| return new char[] { '.' }; |
| } |
| |
| @Override |
| public char[] getContextInformationAutoActivationCharacters() { |
| // TODO not sure |
| return null; |
| } |
| |
| @Override |
| public String getErrorMessage() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public IContextInformationValidator getContextInformationValidator() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| } |