Java tutorial
/* * * This file is part of the iText (R) project. Copyright (c) 1998-2019 iText Group NV * Authors: Balder Van Camp, Emiel Ackermann, et al. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License version 3 * as published by the Free Software Foundation with the addition of the * following permission added to Section 15 as permitted in Section 7(a): * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT * OF THIRD PARTY RIGHTS * * This program 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 Affero General Public License for more details. * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA, 02110-1301 USA, or download the license from the following URL: * http://itextpdf.com/terms-of-use/ * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License. * * In accordance with Section 7(b) of the GNU Affero General Public License, * a covered work must retain the producer line in every PDF that is created * or manipulated using iText. * * You can be released from the requirements of the license by purchasing * a commercial license. Buying such a license is mandatory as soon as you * develop commercial activities involving the iText software without * disclosing the source code of your own applications. * These activities include: offering paid services to customers as an ASP, * serving PDFs on the fly in a web application, shipping iText with a closed * source product. * * For more information, please contact iText Software Corp. at this * address: sales@itextpdf.com */ package com.itextpdf.tool.xml.pipeline.css; import com.itextpdf.tool.xml.Tag; import com.itextpdf.tool.xml.css.CssFile; import com.itextpdf.tool.xml.exceptions.CssResolverException; import com.itextpdf.tool.xml.net.FileRetrieve; /** * Resolves CSS rules for a given tag. * * @author redlab_b * */ public interface CSSResolver { /** * This method should resolve css, meaning, it will look at the css and * retrieve relevant css rules for the given tag. The rules must then be set * in {@link Tag#setCSS(java.util.Map)}. * * @param t the tag. */ void resolveStyles(Tag t); /** * Add a piece of CSS code. * @param content the CSS * @param charSet a charset * @param isPersistent true if the added css should not be deleted on a call to clear * @throws CssResolverException thrown if something goes wrong */ void addCss(String content, String charSet, boolean isPersistent) throws CssResolverException; /** * Add a * @param href the link to the css file ( an absolute uri ) * @param isPersistent true if the added css should not be deleted on a call to clear * @throws CssResolverException thrown if something goes wrong */ void addCssFile(String href, boolean isPersistent) throws CssResolverException; /** * Add a piece of CSS code. * @param content the content to parse to css * @param isPersistent true if the added css should not be deleted on a call to clear * @throws CssResolverException thrown if something goes wrong */ void addCss(String content, boolean isPersistent) throws CssResolverException; /** * Add a CssFile * @param file the CssFile */ void addCss(CssFile file); /** * The {@link FileRetrieve} implementation to use in {@link CSSResolver#addCss(String, boolean)}. * @param retrieve the retrieve to set */ public void setFileRetrieve(final FileRetrieve retrieve); /** * @return an instance of this resolver * @throws CssResolverException thrown if something goes wrong */ CSSResolver clear() throws CssResolverException; }