| /*=============================================================================# |
| # Copyright (c) 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.ecommons.text.ui.presentation; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.jface.text.rules.IToken; |
| import org.eclipse.jface.text.rules.Token; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| |
| |
| @NonNullByDefault |
| public abstract class BasicTextStyleManager<TAttributes> implements TextStyleManager { |
| |
| |
| private final Map<String, Token> tokenMap= new HashMap<>(); |
| |
| |
| public BasicTextStyleManager() { |
| } |
| |
| |
| /** |
| * Token access for styles. |
| * |
| * @param key id and prefix for preference keys |
| * @return token with text style attribute |
| */ |
| @Override |
| public IToken getToken(final String key) { |
| Token token= this.tokenMap.get(key); |
| if (token == null) { |
| token= new Token(createTextAttributes(key)); |
| this.tokenMap.put(key, token); |
| } |
| return token; |
| } |
| |
| protected abstract TAttributes createTextAttributes(String key); |
| |
| |
| protected void updateTextStyles() { |
| for (final Map.Entry<String, Token> token : this.tokenMap.entrySet()) { |
| token.getValue().setData(createTextAttributes(token.getKey())); |
| } |
| } |
| |
| } |