| /*=============================================================================# |
| # Copyright (c) 2005, 2021 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.base.ext.ui.text; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.jface.text.rules.IRule; |
| import org.eclipse.jface.text.rules.IToken; |
| import org.eclipse.jface.text.rules.IWordDetector; |
| import org.eclipse.jface.text.rules.WordRule; |
| |
| import org.eclipse.statet.ecommons.preferences.core.PreferenceAccess; |
| import org.eclipse.statet.ecommons.text.ui.presentation.AbstractRuleBasedScanner; |
| import org.eclipse.statet.ecommons.text.ui.presentation.ITextPresentationConstants; |
| import org.eclipse.statet.ecommons.text.ui.settings.TextStyleManager; |
| import org.eclipse.statet.ecommons.ui.ISettingsChangedHandler; |
| |
| import org.eclipse.statet.base.core.preferences.TaskTagsPreferences; |
| |
| |
| /** |
| * Scanner for comments. Provides support for task tags. |
| */ |
| public class CommentScanner extends AbstractRuleBasedScanner implements ISettingsChangedHandler { |
| |
| |
| private static class TaskTagDetector implements IWordDetector { |
| |
| @Override |
| public boolean isWordStart(final char c) { |
| return Character.isLetterOrDigit(c); |
| } |
| |
| @Override |
| public boolean isWordPart(final char c) { |
| return Character.isLetterOrDigit(c); |
| } |
| } |
| |
| private static class TaskTagRule extends WordRule { |
| |
| private final IToken token; |
| |
| public TaskTagRule(final IToken token, final IToken defaultToken) { |
| super(new TaskTagDetector(), defaultToken); |
| this.token= token; |
| } |
| |
| public void clearTaskTags() { |
| this.fWords.clear(); |
| } |
| |
| public void addTaskTags(final String[] tags) { |
| for (final String tag : tags) { |
| addWord(tag, this.token); |
| } |
| } |
| } |
| |
| |
| private TaskTagRule taskTagRule; |
| |
| private final String commentTokenKey; |
| private final String taskTokenKey; |
| |
| |
| public CommentScanner(final TextStyleManager textStyles, final String commentTokenKey, |
| final String taskTokenKey, |
| final PreferenceAccess corePrefs) { |
| super(textStyles); |
| |
| this.commentTokenKey= commentTokenKey; |
| this.taskTokenKey= taskTokenKey; |
| |
| initRules(); |
| loadTaskTags(corePrefs); |
| } |
| |
| |
| @Override |
| protected void createRules(final List<IRule> rules) { |
| final IToken defaultToken= getToken(this.commentTokenKey); |
| final IToken taskToken= getToken(this.taskTokenKey); |
| |
| setDefaultReturnToken(defaultToken); |
| |
| // Add rule for Task Tags. |
| this.taskTagRule= new TaskTagRule(taskToken, defaultToken); |
| rules.add(this.taskTagRule); |
| } |
| |
| |
| @Override |
| public void handleSettingsChanged(final Set<String> groupIds, final Map<String, Object> options) { |
| if (groupIds.contains(TaskTagsPreferences.GROUP_ID)) { |
| final PreferenceAccess prefs= (PreferenceAccess) options.get(ISettingsChangedHandler.PREFERENCEACCESS_KEY); |
| loadTaskTags(prefs); |
| options.put(ITextPresentationConstants.SETTINGSCHANGE_AFFECTSPRESENTATION_KEY, Boolean.TRUE); |
| } |
| } |
| |
| public void loadTaskTags(final PreferenceAccess prefs) { |
| this.taskTagRule.clearTaskTags(); |
| final String[] tags= TaskTagsPreferences.loadTagsOnly(prefs); |
| if (tags != null) { |
| this.taskTagRule.addTaskTags(tags); |
| } |
| } |
| |
| } |