| /** |
| * Copyright (c) 2010, 2019 Darmstadt University of Technology 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: |
| * Marcel Bruch - initial API and implementation. |
| */ |
| package org.eclipse.jdt.internal.ui.text.java; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.eclipse.jdt.core.dom.IBinding; |
| import org.eclipse.jdt.core.dom.IMethodBinding; |
| |
| import org.eclipse.jdt.internal.ui.text.Chain; |
| import org.eclipse.jdt.internal.ui.text.ChainElement; |
| import org.eclipse.jdt.internal.ui.text.template.contentassist.TemplateProposal; |
| import org.eclipse.jdt.ui.text.java.IJavaCompletionProposal; |
| import org.eclipse.jface.text.DocumentEvent; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IInformationControlCreator; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension2; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension3; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension4; |
| import org.eclipse.jface.text.contentassist.ICompletionProposalExtension6; |
| import org.eclipse.jface.text.contentassist.IContextInformation; |
| import org.eclipse.jface.viewers.StyledString; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| |
| /** |
| * This class basically delegates all events to a {@link TemplateProposal} but provides some |
| * auxiliary methods for testing such as {@link #getChainElementNames()}. It may be extended to |
| * track user click feedback to continuously improve chain completion. |
| */ |
| public class ChainCompletionProposal implements IJavaCompletionProposal, ICompletionProposalExtension2, |
| ICompletionProposalExtension3, ICompletionProposalExtension4, ICompletionProposalExtension6 { |
| |
| private static final int CHAIN_PROPOSAL_BOOST= 100; |
| |
| private final Chain chain; |
| |
| private final TemplateProposal completion; |
| |
| public ChainCompletionProposal(final TemplateProposal completion, final Chain chain) { |
| this.completion= completion; |
| this.chain= chain; |
| } |
| |
| public List<String> getChainElementNames() { |
| final List<String> b= new LinkedList<>(); |
| for (final ChainElement edge : chain.getElements()) { |
| final IBinding bind= edge.getElementBinding(); |
| final char[] name= bind instanceof IMethodBinding ? ((IMethodBinding) bind).getName().toCharArray() : bind.getName().toCharArray(); |
| b.add(String.valueOf(name)); |
| } |
| return b; |
| } |
| |
| @Override |
| public void apply(final IDocument document) { |
| throw new IllegalStateException("Applying proposals to documents is deprecated"); //$NON-NLS-1$ |
| } |
| |
| @Override |
| public void apply(final ITextViewer viewer, final char trigger, final int stateMask, final int offset) { |
| completion.apply(viewer, trigger, stateMask, offset); |
| } |
| |
| @Override |
| public String getAdditionalProposalInfo() { |
| return completion.getAdditionalProposalInfo(); |
| } |
| |
| @Override |
| public String getDisplayString() { |
| return completion.getDisplayString(); |
| } |
| |
| @Override |
| public IContextInformation getContextInformation() { |
| return completion.getContextInformation(); |
| } |
| |
| @Override |
| public int getRelevance() { |
| return -chain.getElements().size() - CHAIN_PROPOSAL_BOOST; |
| } |
| |
| @Override |
| public Point getSelection(final IDocument document) { |
| return completion.getSelection(document); |
| } |
| |
| @Override |
| public Image getImage() { |
| return completion.getImage(); |
| } |
| |
| @Override |
| public void selected(final ITextViewer viewer, final boolean smartToggle) { |
| completion.selected(viewer, smartToggle); |
| |
| } |
| |
| @Override |
| public void unselected(final ITextViewer viewer) { |
| completion.unselected(viewer); |
| } |
| |
| @Override |
| public boolean validate(final IDocument document, final int offset, final DocumentEvent event) { |
| return completion.validate(document, offset, event); |
| } |
| |
| @Override |
| public String toString() { |
| return completion.getDisplayString(); |
| } |
| |
| @Override |
| public StyledString getStyledDisplayString() { |
| return completion.getStyledDisplayString(); |
| } |
| |
| @Override |
| public boolean isAutoInsertable() { |
| return completion.isAutoInsertable(); |
| } |
| |
| @Override |
| public IInformationControlCreator getInformationControlCreator() { |
| return completion.getInformationControlCreator(); |
| } |
| |
| @Override |
| public CharSequence getPrefixCompletionText(final IDocument document, final int completionOffset) { |
| return completion.getPrefixCompletionText(document, completionOffset); |
| } |
| |
| @Override |
| public int getPrefixCompletionStart(final IDocument document, final int completionOffset) { |
| return completion.getPrefixCompletionStart(document, completionOffset); |
| } |
| } |