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/*******************************************************************************
* Copyright (c) 2019 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.html.ui.internal.contentassist;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.core.runtime.content.IContentTypeManager;
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.source.ISourceViewer;
import org.eclipse.ui.internal.genericeditor.ContentAssistProcessorRegistry;
import org.eclipse.ui.internal.genericeditor.GenericEditorPlugin;
import org.eclipse.wst.html.core.internal.provisional.contenttype.ContentTypeIdForHTML;
import org.eclipse.wst.sse.ui.contentassist.CompletionProposalInvocationContext;
import org.eclipse.wst.sse.ui.contentassist.ICompletionProposalComputer;
public class GenericCompletionProposalComputer implements ICompletionProposalComputer {
List<IContentAssistProcessor> fContentAssistProcessors = null;
public void sessionEnded() {
fContentAssistProcessors = null;
}
@Override
public void sessionStarted() {
}
@Override
public List computeCompletionProposals(CompletionProposalInvocationContext context, IProgressMonitor monitor) {
ISourceViewer viewer = null;
if (context.getViewer() instanceof ISourceViewer) {
viewer = (ISourceViewer) context.getViewer();
}
if (fContentAssistProcessors == null && viewer != null) {
IContentTypeManager contentTypeManager = Platform.getContentTypeManager();
ContentAssistProcessorRegistry contentAssistProcessorRegistry = GenericEditorPlugin.getDefault().getContentAssistProcessorRegistry();
Set<IContentType> types = new HashSet<>();
IContentType contentType = contentTypeManager.getContentType(ContentTypeIdForHTML.ContentTypeID_HTML);
types.add(contentType);
contentType = contentTypeManager.getContentType("org.eclipse.core.runtime.text");
types.add(contentType);
fContentAssistProcessors = contentAssistProcessorRegistry.getContentAssistProcessors(viewer, null, types);
}
List<ICompletionProposal> proposals = new ArrayList<>();
for (IContentAssistProcessor processor : fContentAssistProcessors) {
ICompletionProposal[] computed = processor.computeCompletionProposals(context.getViewer(), context.getInvocationOffset());
proposals.addAll(Arrays.asList(computed));
}
return proposals;
}
@Override
public List computeContextInformation(CompletionProposalInvocationContext context, IProgressMonitor monitor) {
ISourceViewer viewer = null;
if (context.getViewer() instanceof ISourceViewer) {
viewer = (ISourceViewer) context.getViewer();
}
if (fContentAssistProcessors == null && viewer != null) {
IContentTypeManager contentTypeManager = Platform.getContentTypeManager();
ContentAssistProcessorRegistry contentAssistProcessorRegistry = GenericEditorPlugin.getDefault().getContentAssistProcessorRegistry();
Set<IContentType> types = new HashSet<>();
IContentType contentType = contentTypeManager.getContentType(ContentTypeIdForHTML.ContentTypeID_HTML);
types.add(contentType);
contentType = contentTypeManager.getContentType("org.eclipse.core.runtime.text");
types.add(contentType);
fContentAssistProcessors = contentAssistProcessorRegistry.getContentAssistProcessors(viewer, null, types);
}
List<IContextInformation> infos = new ArrayList<>();
for (IContentAssistProcessor processor : fContentAssistProcessors) {
IContextInformation[] computed = processor.computeContextInformation(context.getViewer(), context.getInvocationOffset());
infos.addAll(Arrays.asList(computed));
}
return infos;
}
@Override
public String getErrorMessage() {
// TODO Auto-generated method stub
return null;
}
}
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