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Parses XML to PDF, with CSS support, using iText
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* 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: [email protected]
*/
package com.itextpdf.tool.xml.css;
import com.itextpdf.tool.xml.Tag;
import java.util.*;
import java.util.Map.Entry;
/**
* @author itextpdf.com
*
*/
public class CssFilesImpl implements CssFiles {
private final List files;
private final CssUtils utils;
/**
* Constructs a new CssFilesImpl.
*/
public CssFilesImpl() {
this.files = new ArrayList();
this.utils = CssUtils.getInstance();
}
/**
* Construct a new CssFilesImpl with the given css file.
* @param css the css file
*/
public CssFilesImpl(final CssFile css) {
this();
this.add(css);
}
/*
* (non-Javadoc)
*
* @see com.itextpdf.tool.xml.css.CssFiles#hasFiles()
*/
public boolean hasFiles() {
return !this.files.isEmpty();
}
/**
* Processes a tag and retrieves CSS. Selectors created:
*
* - element
* - element>element (and a spaced version element > element)
* - #id
* - .class
* - element+element ( and a spaced version element + element)
*
*/
public Map getCSS(final Tag t) {
Map aggregatedProps = new LinkedHashMap();
populateCss(t, aggregatedProps);
return aggregatedProps;
}
public void populateCss(final Tag t, final Map aggregatedProps) {
List rules = new ArrayList();
for (CssFile cssFile: this.files) {
rules.addAll(cssFile.get(t));
}
Collections.sort(rules);
for (CssRule rule: rules)
populateOneCss(aggregatedProps, rule.getNormalDeclarations());
for (CssRule rule: rules)
populateOneCss(aggregatedProps, rule.getImportantDeclarations());
}
public void populateOneCss(final Map aggregatedProps, final Map cssDeclaration) {
Map css = new LinkedHashMap();
for (Entry e : cssDeclaration.entrySet()) {
String key = utils.stripDoubleSpacesTrimAndToLowerCase(e.getKey());
String value = utils.stripDoubleSpacesAndTrim(e.getValue());
if (CSS.Property.BORDER.equalsIgnoreCase(key)) {
css.putAll(utils.parseBorder(value));
} else if (CSS.Property.BORDER_TOP.equalsIgnoreCase(key)) {
css.putAll(utils.parseBorder(value, CSS.Property.BORDER_TOP));
} else if (CSS.Property.BORDER_BOTTOM.equalsIgnoreCase(key)) {
css.putAll(utils.parseBorder(value, CSS.Property.BORDER_BOTTOM));
} else if (CSS.Property.BORDER_LEFT.equalsIgnoreCase(key)) {
css.putAll(utils.parseBorder(value, CSS.Property.BORDER_LEFT));
} else if (CSS.Property.BORDER_RIGHT.equalsIgnoreCase(key)) {
css.putAll(utils.parseBorder(value, CSS.Property.BORDER_RIGHT));
} else if (CSS.Property.MARGIN.equalsIgnoreCase(key)) {
Map margins = utils.parseBoxValues(value, "margin-", "");
for (String marginKey : margins.keySet()) {
if (!css.containsKey(marginKey)) {
css.put(marginKey, margins.get(marginKey));
}
}
} else if (CSS.Property.BORDER_WIDTH.equalsIgnoreCase(key)) {
css.putAll(utils.parseBoxValues(value, "border-", "-width"));
} else if (CSS.Property.BORDER_STYLE.equalsIgnoreCase(key)) {
css.putAll(utils.parseBoxValues(value, "border-", "-style"));
} else if (CSS.Property.BORDER_COLOR.equalsIgnoreCase(key)) {
css.putAll(utils.parseBoxValues(value, "border-", "-color"));
} else if (CSS.Property.PADDING.equalsIgnoreCase(key)) {
Map paddings = utils.parseBoxValues(value, "padding-", "");
for (String paddingKey : paddings.keySet()) {
if (!css.containsKey(paddingKey)) {
css.put(paddingKey, paddings.get(paddingKey));
}
}
//css.putAll(utils.parseBoxValues(value, "padding-", ""));
} else if (CSS.Property.FONT.equalsIgnoreCase(key)) {
css.putAll(utils.processFont(value));
} else if (CSS.Property.LIST_STYLE.equalsIgnoreCase(key)) {
css.putAll(utils.processListStyle(value));
} else if (key.toLowerCase().contains(CSS.Property.BACKGROUND)) {
Map backgroundStyles = utils.processBackground(value);
for (String backgroundKey : backgroundStyles.keySet()) {
if (!css.containsKey(backgroundKey)) {
css.put(backgroundKey, backgroundStyles.get(backgroundKey));
}
}
} else {
css.put(key, value);
}
}
aggregatedProps.putAll(css);
}
/* (non-Javadoc)
* @see com.itextpdf.tool.xml.css.CssFiles#addFile(com.itextpdf.tool.xml.css.CssFile)
*/
public void add(final CssFile css) {
if (css != null) {
this.files.add(css);
}
}
/* (non-Javadoc)
* @see com.itextpdf.tool.xml.css.CssFiles#clear()
*/
public void clear() {
Iterator iterator = files.iterator();
while(iterator.hasNext()) {
CssFile next = iterator.next();
if (!next.isPersistent()) {
iterator.remove();
}
}
}
}