/*******************************************************************************
* Copyright (c) 2008, 2017 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
* Tasktop Technologies - changes for bug 219692
*******************************************************************************/
package org.eclipse.dltk.internal.mylyn.editor;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.dltk.core.CompletionProposal;
import org.eclipse.dltk.internal.mylyn.DLTKUiUtil;
import org.eclipse.dltk.ui.DLTKUIPlugin;
import org.eclipse.dltk.ui.text.completion.ContentAssistInvocationContext;
import org.eclipse.dltk.ui.text.completion.ScriptCompletionProposalCollector;
import org.eclipse.dltk.ui.text.completion.ScriptCompletionProposalComputer;
import org.eclipse.dltk.ui.text.completion.ScriptContentAssistInvocationContext;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.templates.TemplateCompletionProcessor;
/**
* Based on org.eclipse.jdt.internal.ui.text.java.JavaAllCompletionProposalComputer.
*
* @author Mik Kersten
* @author Steffen Pingel
*/
// TODO e3.5 extend org.eclipse.jdt.internal.ui.text.java.JavaAllCompletionProposalComputer
public class FocusedDLTKAllProposalComputer extends ScriptCompletionProposalComputer {
/**
* @see CompletionProposal#METHOD_REF_WITH_CASTED_RECEIVER
*/
// TODO e3.4 replace by CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER
public static final int METHOD_REF_WITH_CASTED_RECEIVER = 24;
/**
* @see CompletionProposal#METHOD_REF_WITH_CASTED_RECEIVER
*/
// TODO e3.4 replace by CompletionProposal.METHOD_REF_WITH_CASTED_RECEIVER
public static final int FIELD_REF_WITH_CASTED_RECEIVER = 25;
/**
* @see CompletionProposal#CONSTRUCTOR_INVOCATION
*/
// TODO e3.5 replace by CompletionProposal.CONSTRUCTOR_INVOCATION
public static final int CONSTRUCTOR_INVOCATION = 26;
/**
* @see CompletionProposal#ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION
*/
// TODO e3.5 replace by CompletionProposal.ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION
public static final int ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION = 27;
public FocusedDLTKAllProposalComputer() {
FocusedDLTKProposalProcessor.getDefault().addMonitoredComputer(this);
}
@Override
public List<ICompletionProposal> computeCompletionProposals(ContentAssistInvocationContext context,
IProgressMonitor monitor) {
if (shouldReturnResults()) {
List<ICompletionProposal> proposals = super.computeCompletionProposals(context, monitor);
return FocusedDLTKProposalProcessor.getDefault().projectInterestModel(this, proposals);
} else {
return Collections.emptyList();
}
}
private boolean shouldReturnResults() {
if (DLTKUiUtil.isDefaultAssistActive(DLTKUiUtil.ASSIST_DLTK_ALL)) {
// do not return duplicates if the default JDT processor is already enabled on Eclipse 3.5
return false;
}
Set<String> disabledIds = DLTKUiUtil.getDisabledIds(DLTKUIPlugin.getDefault().getPreferenceStore());
if (!disabledIds.contains(DLTKUiUtil.ASSIST_DLTK_NOTYPE)
&& !disabledIds.contains(DLTKUiUtil.ASSIST_DLTK_TYPE)) {
// do not return duplicates if the default JDT processors are already enabled on on Eclipse 3.3 and 3.4
return false;
}
return true;
}
@Override
protected ScriptCompletionProposalCollector createCollector(ScriptContentAssistInvocationContext context) {
ScriptCompletionProposalCollector collector = null;
// FIXME super.createCollector(context);
if (collector == null) {
return null;
}
// collector.setIgnored(CompletionProposal.ANNOTATION_ATTRIBUTE_REF, false);
// collector.setIgnored(CompletionProposal.ANONYMOUS_CLASS_DECLARATION, false);
try {
collector.setIgnored(ANONYMOUS_CLASS_CONSTRUCTOR_INVOCATION, false);
} catch (IllegalArgumentException e) {
// ignore
}
collector.setIgnored(CompletionProposal.FIELD_REF, false);
try {
collector.setIgnored(FIELD_REF_WITH_CASTED_RECEIVER, false);
} catch (IllegalArgumentException e) {
// ignore
}
collector.setIgnored(CompletionProposal.KEYWORD, false);
collector.setIgnored(CompletionProposal.LABEL_REF, false);
collector.setIgnored(CompletionProposal.LOCAL_VARIABLE_REF, false);
collector.setIgnored(CompletionProposal.METHOD_DECLARATION, false);
collector.setIgnored(CompletionProposal.METHOD_NAME_REFERENCE, false);
collector.setIgnored(CompletionProposal.METHOD_REF, false);
try {
collector.setIgnored(CONSTRUCTOR_INVOCATION, false);
} catch (IllegalArgumentException e) {
// ignore
}
try {
collector.setIgnored(METHOD_REF_WITH_CASTED_RECEIVER, false);
} catch (IllegalArgumentException e) {
// ignore
}
collector.setIgnored(CompletionProposal.PACKAGE_REF, false);
collector.setIgnored(CompletionProposal.POTENTIAL_METHOD_DECLARATION, false);
collector.setIgnored(CompletionProposal.VARIABLE_DECLARATION, false);
collector.setIgnored(CompletionProposal.TYPE_REF, false);
return collector;
}
@Override
protected int guessContextInformationPosition(ContentAssistInvocationContext context) {
int invocationOffset = context.getInvocationOffset();
int typeContext = super.guessContextInformationPosition(context);
int methodContext = guessMethodContextInformationPosition2(context);
if (typeContext != invocationOffset && typeContext > methodContext) {
return typeContext;
} else if (methodContext != invocationOffset) {
return methodContext;
} else {
return invocationOffset;
}
}
// renamed, since guessMethodContextInformationPosition(ContentAssistInvocationContext) is final
protected final int guessMethodContextInformationPosition2(ContentAssistInvocationContext context) {
final int contextPosition = context.getInvocationOffset();
// IDocument document = context.getDocument();
// ScriptHeuristicScanner scanner = new ScriptHeuristicScanner(document);
// int bound = Math.max(-1, contextPosition - 200);
//
// // try the innermost scope of parentheses that looks like a method call
// int pos = contextPosition - 1;
// do {
// int paren = scanner.findOpeningPeer(pos, bound, '(', ')');
// if (paren == ScriptHeuristicScanner.NOT_FOUND) {
// break;
// }
// int token = scanner.previousToken(paren - 1, bound);
// // next token must be a method name (identifier) or the closing angle of a
// // constructor call of a parameterized type.
// if (token == Symbols.TokenIDENT || token == Symbols.TokenGREATERTHAN) {
// return paren + 1;
// }
// pos = paren - 1;
// } while (true);
return contextPosition;
}
@Override
protected TemplateCompletionProcessor createTemplateProposalComputer(ScriptContentAssistInvocationContext context) {
return null;
}
}