📄 textdecorationhandler.java
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/* * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. */package com.sun.stylesheet.styleable;import javax.swing.*;import com.sun.stylesheet.*;/** * Provides support for the <code>text-decoration</code> synthetic property. * *@author Ethan Nicholas */public class TextDecorationHandler implements PropertyHandler { public enum Decoration { none, underline, linethrough }; private static final StringBuilder TEXT_DECORATION_KEY = new StringBuilder("$cssTextDecoration"); private static final String UNDERLINE_START = "<html><!-- css --><u>"; private static final String UNDERLINE_END = "</u>"; private static final String LINETHROUGH_START = "<html><!-- css --><strike>"; private static final String LINETHROUGH_END = "</strike>"; private StyleSupport styleSupport; private TextHandler textHandler; public TextDecorationHandler(StyleSupport styleSupport) { this.styleSupport = styleSupport; } public Class getPropertyType(Object object) { return Decoration.class; } private String stripText(String text) { if (text.startsWith(UNDERLINE_START) && text.endsWith(UNDERLINE_END)) text = text.substring(UNDERLINE_START.length(), text.length() - UNDERLINE_END.length()); if (text.startsWith(LINETHROUGH_START) && text.endsWith(LINETHROUGH_END)) text = text.substring(LINETHROUGH_START.length(), text.length() - LINETHROUGH_END.length()); return text; } TextHandler getTextHandler() { if (textHandler == null) textHandler = (TextHandler) styleSupport.getPropertyHandler("text"); return textHandler; } public Object getProperty(Object object) throws StylesheetException { JComponent c = (JComponent) object; Decoration result = (Decoration) c.getClientProperty(TEXT_DECORATION_KEY); return result != null ? result : Decoration.none; } public void setProperty(Object object, Object value) throws StylesheetException { ((JComponent) object).putClientProperty(TEXT_DECORATION_KEY, value); String originalText = (String) getTextHandler().getProperty(object); if (originalText != null) { String newText = stripText(originalText); if (value == Decoration.underline) newText = UNDERLINE_START + newText + UNDERLINE_END; else if (value == Decoration.linethrough) newText = LINETHROUGH_START + newText + LINETHROUGH_END; if (!newText.equals(originalText)) textHandler.setProperty(object, newText); } }}⌨️ 快捷键说明
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