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/*******************************************************************************
* 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
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.qt.ui.editor;
import java.util.Map;
import org.eclipse.cdt.ui.CDTUITools;
import org.eclipse.cdt.ui.PreferenceConstants;
import org.eclipse.cdt.ui.text.ICColorConstants;
import org.eclipse.cdt.ui.text.IColorManager;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
import org.eclipse.jface.text.rules.IRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.ITokenScanner;
import org.eclipse.jface.text.rules.IWordDetector;
import org.eclipse.jface.text.rules.RuleBasedScanner;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WordRule;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.ui.editors.text.TextSourceViewerConfiguration;
/**
* Performs syntax highlighting for the {@link QMLEditor}.
*/
public class QMLSourceViewerConfiguration extends TextSourceViewerConfiguration {
private Token defaultToken;
private Token multiLineCommentToken;
private Token singleLineCommentToken;
private Token keywordToken;
private Token stringToken;
private Token taskTagToken;
private final QMLEditor editor;
public QMLSourceViewerConfiguration(QMLEditor editor, IPreferenceStore prefs) {
super(prefs);
this.editor = editor;
initTokens(prefs);
}
@Override
public IPresentationReconciler getPresentationReconciler(ISourceViewer viewer) {
PresentationReconciler reconciler = new PresentationReconciler();
reconciler.setDocumentPartitioning(IQMLPartitions.QML_PARTITIONING);
DefaultDamagerRepairer dr;
dr = new DefaultDamagerRepairer(createMultiLineCommentTokenScanner());
reconciler.setDamager(dr, IQMLPartitions.QML_MULTI_LINE_COMMENT);
reconciler.setRepairer(dr, IQMLPartitions.QML_MULTI_LINE_COMMENT);
dr = new DefaultDamagerRepairer(createSingleLineCommentTokenScanner());
reconciler.setDamager(dr, IQMLPartitions.QML_SINGLE_LINE_COMMENT);
reconciler.setRepairer(dr, IQMLPartitions.QML_SINGLE_LINE_COMMENT);
dr = new DefaultDamagerRepairer(createStringTokenScanner());
reconciler.setDamager(dr, IQMLPartitions.QML_STRING);
reconciler.setRepairer(dr, IQMLPartitions.QML_STRING);
dr = new DefaultDamagerRepairer(createDefaultTokenScanner());
reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
return reconciler;
}
private ITokenScanner createMultiLineCommentTokenScanner() {
RuleBasedScanner scanner = new RuleBasedScanner();
scanner.setDefaultReturnToken(multiLineCommentToken);
scanner.setRules(new IRule[] { createTaskTagRule(multiLineCommentToken) });
return scanner;
}
private ITokenScanner createSingleLineCommentTokenScanner() {
RuleBasedScanner scanner = new RuleBasedScanner();
scanner.setDefaultReturnToken(singleLineCommentToken);
scanner.setRules(new IRule[] { createTaskTagRule(singleLineCommentToken) });
return scanner;
}
private ITokenScanner createStringTokenScanner() {
RuleBasedScanner scanner = new RuleBasedScanner();
scanner.setDefaultReturnToken(stringToken);
return scanner;
}
private ITokenScanner createDefaultTokenScanner() {
RuleBasedScanner scanner = new RuleBasedScanner();
WordRule wordRule = new WordRule(new IWordDetector() {
@Override
public boolean isWordStart(char c) {
return Character.isJavaIdentifierStart(c);
}
@Override
public boolean isWordPart(char c) {
return Character.isJavaIdentifierPart(c);
}
}, defaultToken);
// Works decently well for now. However, some keywords like 'color' can
// also be used as identifiers. Can only fix this with
// semantic highlighting after the parser is completed.
for (String keyword : QMLKeywords.getKeywords(true)) {
wordRule.addWord(keyword, keywordToken);
}
scanner.setRules(new IRule[] { wordRule });
return scanner;
}
private IRule createTaskTagRule(IToken defaultToken) {
WordRule wordRule = new WordRule(new IWordDetector() {
@Override
public boolean isWordStart(char c) {
return Character.isJavaIdentifierStart(c);
}
@Override
public boolean isWordPart(char c) {
return Character.isJavaIdentifierPart(c);
}
}, defaultToken);
// TODO: Add preference page for task tags
wordRule.addWord("TODO", taskTagToken); //$NON-NLS-1$
wordRule.addWord("FIXME", taskTagToken); //$NON-NLS-1$
wordRule.addWord("XXX", taskTagToken); //$NON-NLS-1$
return wordRule;
}
@Override
public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
ContentAssistant contentAssistant = new ContentAssistant();
IContentAssistProcessor processor = new QMLContentAssistProcessor(editor);
contentAssistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE);
contentAssistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));
return contentAssistant;
}
@Override
protected Map<String, IAdaptable> getHyperlinkDetectorTargets(ISourceViewer sourceViewer) {
Map<String, IAdaptable> targets = super.getHyperlinkDetectorTargets(sourceViewer);
targets.put("org.eclipse.cdt.qt.ui.qml", editor); //$NON-NLS-1$
return targets;
}
private void initTokens(IPreferenceStore prefStore) {
IColorManager colorManager = CDTUITools.getColorManager();
defaultToken = new Token(null);
multiLineCommentToken = new Token(createTextAttribute(colorManager, ICColorConstants.C_MULTI_LINE_COMMENT));
singleLineCommentToken = new Token(createTextAttribute(colorManager, ICColorConstants.C_SINGLE_LINE_COMMENT));
keywordToken = new Token(createTextAttribute(colorManager, ICColorConstants.C_KEYWORD));
stringToken = new Token(createTextAttribute(colorManager, ICColorConstants.C_STRING));
taskTagToken = new Token(createTextAttribute(colorManager, ICColorConstants.TASK_TAG));
}
private TextAttribute createTextAttribute(IColorManager colorManager, String colorKey) {
Color color = colorManager.getColor(colorKey);
if (color == null) {
RGB rgb = PreferenceConverter.getColor(fPreferenceStore, colorKey);
colorManager.unbindColor(colorKey);
colorManager.bindColor(colorKey, rgb);
color = colorManager.getColor(colorKey);
}
String boldKey = colorKey + PreferenceConstants.EDITOR_BOLD_SUFFIX;
String italicKey = colorKey + PreferenceConstants.EDITOR_ITALIC_SUFFIX;
String strikethroughKey = colorKey + PreferenceConstants.EDITOR_STRIKETHROUGH_SUFFIX;
String underlineKey = colorKey + PreferenceConstants.EDITOR_UNDERLINE_SUFFIX;
int style = fPreferenceStore.getBoolean(boldKey) ? SWT.BOLD : SWT.NORMAL;
if (fPreferenceStore.getBoolean(italicKey))
style |= SWT.ITALIC;
if (fPreferenceStore.getBoolean(strikethroughKey))
style |= TextAttribute.STRIKETHROUGH;
if (fPreferenceStore.getBoolean(underlineKey))
style |= TextAttribute.UNDERLINE;
return new TextAttribute(color, null, style);
}
public void handlePreferenceStoreChanged(PropertyChangeEvent event) {
IColorManager colorManager = CDTUITools.getColorManager();
String property = event.getProperty();
if (property.startsWith(ICColorConstants.C_MULTI_LINE_COMMENT)) {
multiLineCommentToken.setData(createTextAttribute(colorManager, ICColorConstants.C_MULTI_LINE_COMMENT));
}
if (property.startsWith(ICColorConstants.C_SINGLE_LINE_COMMENT)) {
singleLineCommentToken.setData(createTextAttribute(colorManager, ICColorConstants.C_SINGLE_LINE_COMMENT));
}
if (property.startsWith(ICColorConstants.C_KEYWORD)) {
keywordToken.setData(createTextAttribute(colorManager, ICColorConstants.C_KEYWORD));
}
if (property.startsWith(ICColorConstants.C_STRING)) {
stringToken.setData(createTextAttribute(colorManager, ICColorConstants.C_STRING));
}
if (property.startsWith(ICColorConstants.TASK_TAG)) {
taskTagToken.setData(createTextAttribute(colorManager, ICColorConstants.TASK_TAG));
}
}
protected boolean affectsTextPresentation(PropertyChangeEvent event) {
String property = event.getProperty();
return property.startsWith(ICColorConstants.C_MULTI_LINE_COMMENT)
|| property.startsWith(ICColorConstants.C_SINGLE_LINE_COMMENT)
|| property.startsWith(ICColorConstants.C_KEYWORD) || property.startsWith(ICColorConstants.C_STRING)
|| property.startsWith(ICColorConstants.TASK_TAG);
}
}
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