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/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation 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
*
* Contributors:
* IBM Corporation - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.spelling;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.cdt.internal.ui.text.IHtmlTagConstants;
import org.eclipse.cdt.internal.ui.text.correction.CorrectionContext;
import org.eclipse.cdt.internal.ui.text.spelling.engine.ISpellCheckEngine;
import org.eclipse.cdt.internal.ui.text.spelling.engine.ISpellChecker;
import org.eclipse.cdt.internal.ui.text.spelling.engine.ISpellEvent;
import org.eclipse.cdt.internal.ui.text.spelling.engine.RankedWordProposal;
import org.eclipse.cdt.ui.text.ICCompletionProposal;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.osgi.util.NLS;
import org.eclipse.ui.texteditor.spelling.SpellingProblem;
/**
* A {@link SpellingProblem} that adapts a {@link ISpellEvent}.
* <p>
* TODO: remove {@link ISpellEvent} notification mechanism
* </p>
*/
public class CSpellingProblem extends SpellingProblem {
/** Spell event */
private ISpellEvent fSpellEvent;
/**
* The associated document.
*/
private IDocument fDocument;
/**
* Initialize with the given spell event.
*
* @param spellEvent the spell event
* @param document the document
*/
public CSpellingProblem(ISpellEvent spellEvent, IDocument document) {
Assert.isLegal(document != null);
Assert.isLegal(spellEvent != null);
fSpellEvent = spellEvent;
fDocument = document;
}
/*
* @see org.eclipse.ui.texteditor.spelling.SpellingProblem#getOffset()
*/
@Override
public int getOffset() {
return fSpellEvent.getBegin();
}
/*
* @see org.eclipse.ui.texteditor.spelling.SpellingProblem#getLength()
*/
@Override
public int getLength() {
return fSpellEvent.getEnd() - fSpellEvent.getBegin() + 1;
}
/*
* @see org.eclipse.ui.texteditor.spelling.SpellingProblem#getMessage()
*/
@Override
public String getMessage() {
if (isSentenceStart() && isDictionaryMatch())
return NLS.bind(Messages.Spelling_error_case_label, fSpellEvent.getWord());
return NLS.bind(Messages.Spelling_error_label, fSpellEvent.getWord());
}
/*
* @see org.eclipse.ui.texteditor.spelling.SpellingProblem#getProposals()
*/
@Override
public ICompletionProposal[] getProposals() {
String[] arguments = getArguments();
if (arguments == null)
return new ICompletionProposal[0];
final int threshold = SpellingPreferences.spellingProposalThreshold();
int size = 0;
List<RankedWordProposal> proposals = null;
RankedWordProposal proposal = null;
ICCompletionProposal[] result = null;
int index = 0;
boolean fixed = false;
boolean match = false;
boolean sentence = false;
final ISpellCheckEngine engine = SpellCheckEngine.getInstance();
final ISpellChecker checker = engine.getSpellChecker();
if (checker != null) {
CorrectionContext context = new CorrectionContext(null, getOffset(), getLength());
// Hack borrowed from JDT.
fixed = arguments[0].charAt(0) == IHtmlTagConstants.HTML_TAG_PREFIX;
if ((sentence && match) && !fixed) {
result = new ICCompletionProposal[] {
new ChangeCaseProposal(arguments, getOffset(), getLength(), context, engine.getLocale()) };
} else {
proposals = new ArrayList<>(checker.getProposals(arguments[0], sentence));
size = proposals.size();
if (threshold > 0 && size > threshold) {
Collections.sort(proposals);
proposals = proposals.subList(size - threshold - 1, size - 1);
size = proposals.size();
}
boolean extendable = !fixed ? (checker.acceptsWords() || AddWordProposal.canAskToConfigure()) : false;
result = new ICCompletionProposal[size + (extendable ? 3 : 2)];
for (index = 0; index < size; index++) {
proposal = proposals.get(index);
result[index] = new WordCorrectionProposal(proposal.getText(), arguments, getOffset(), getLength(),
context, proposal.getRank());
}
if (extendable)
result[index++] = new AddWordProposal(arguments[0], context);
result[index++] = new WordIgnoreProposal(arguments[0], context);
result[index++] = new DisableSpellCheckingProposal(context);
}
}
return result;
}
public String[] getArguments() {
String prefix = ""; //$NON-NLS-1$
String postfix = ""; //$NON-NLS-1$
String word;
try {
word = fDocument.get(getOffset(), getLength());
} catch (BadLocationException e) {
return null;
}
try {
IRegion line = fDocument.getLineInformationOfOffset(getOffset());
int end = getOffset() + getLength();
prefix = fDocument.get(line.getOffset(), getOffset() - line.getOffset());
postfix = fDocument.get(end + 1, line.getOffset() + line.getLength() - end);
} catch (BadLocationException exception) {
// Do nothing
}
return new String[] { word, prefix, postfix,
isSentenceStart() ? Boolean.toString(true) : Boolean.toString(false),
isDictionaryMatch() ? Boolean.toString(true) : Boolean.toString(false) };
}
/**
* Returns <code>true</code> iff the corresponding word was found in the dictionary.
* <p>
* NOTE: to be removed, see {@link #getProposals()}
* </p>
*
* @return <code>true</code> iff the corresponding word was found in the dictionary
*/
public boolean isDictionaryMatch() {
return fSpellEvent.isMatch();
}
/**
* Returns <code>true</code> iff the corresponding word starts a sentence.
* <p>
* NOTE: to be removed, see {@link #getProposals()}
* </p>
*
* @return <code>true</code> iff the corresponding word starts a sentence
*/
public boolean isSentenceStart() {
return fSpellEvent.isStart();
}
}
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