itextpdf-master/xmlworker/src/main/java/com/itextpdf/tool/xml/css/DefaultCssInheritanceRules.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 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.css;

import java.util.Arrays;
import java.util.List;

import com.itextpdf.tool.xml.Tag;
import com.itextpdf.tool.xml.html.HTML;

/**
 * @author redlab_b
 *
 */
public class DefaultCssInheritanceRules implements CssInheritanceRules {

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * com.itextpdf.tool.xml.css.CssInheritanceRules#inheritCssTag(java.lang
	 * .String)
	 */
	public boolean inheritCssTag(final String tag) {
		return true;
	}

	private static final List<String> GLOBAL = Arrays.asList(new String[] {
			CSS.Property.WIDTH, CSS.Property.HEIGHT,
			CSS.Property.MIN_WIDTH, CSS.Property.MAX_WIDTH,
			CSS.Property.MIN_HEIGHT, CSS.Property.MAX_HEIGHT,
			CSS.Property.MARGIN,
			CSS.Property.MARGIN_LEFT, CSS.Property.MARGIN_RIGHT,
			CSS.Property.MARGIN_TOP, CSS.Property.MARGIN_BOTTOM,
			CSS.Property.PADDING,
			CSS.Property.PADDING_LEFT, CSS.Property.PADDING_RIGHT,
			CSS.Property.PADDING_TOP, CSS.Property.PADDING_BOTTOM,
			CSS.Property.BORDER_TOP_WIDTH, CSS.Property.BORDER_TOP_STYLE, CSS.Property.BORDER_TOP_COLOR,
			CSS.Property.BORDER_BOTTOM_WIDTH,CSS.Property.BORDER_BOTTOM_STYLE, CSS.Property.BORDER_BOTTOM_COLOR,
			CSS.Property.BORDER_LEFT_WIDTH,	CSS.Property.BORDER_LEFT_STYLE,	CSS.Property.BORDER_LEFT_COLOR,
			CSS.Property.BORDER_RIGHT_WIDTH, CSS.Property.BORDER_RIGHT_STYLE,CSS.Property.BORDER_RIGHT_COLOR,
			CSS.Property.PAGE_BREAK_BEFORE, CSS.Property.PAGE_BREAK_AFTER,
			CSS.Property.LEFT, CSS.Property.TOP,CSS.Property.RIGHT,CSS.Property.BOTTOM,
			CSS.Property.POSITION });
	private static final List<String> PARENT_TO_TABLE = Arrays.asList(new String[] { "line-height", "font-size",
			"font-style", "font-weight",
			"text-indent",
            CSS.Property.CELLPADDING, CSS.Property.CELLPADDING_LEFT, CSS.Property.CELLPADDING_TOP,
            CSS.Property.CELLPADDING_RIGHT, CSS.Property.CELLPADDING_BOTTOM, CSS.Property.DIRECTION});
	private static final List<String> TABLE_IN_ROW = Arrays.asList(new String[] { "background-color", CSS.Property.DIRECTION });
    private static final List<String> DIV_TO_CONTENT = Arrays.asList(new String[] { CSS.Property.BACKGROUND , CSS.Property.BACKGROUND_COLOR, CSS.Property.FLOAT});
	// styles that should not be applied on the content of a td-tag.
	private static final List<String> TD_TO_CONTENT = Arrays.asList(new String[] { "vertical-align" });

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * com.itextpdf.tool.xml.css.CssInheritanceRules#inheritCssSelector(com.
	 * itextpdf.tool.xml.Tag, java.lang.String)
	 */
	public boolean inheritCssSelector(final Tag tag, final String key) {
		if (GLOBAL.contains(key)) {
			return false;
		}
		if (HTML.Tag.TABLE.equals(tag.getName())) {
			return !PARENT_TO_TABLE.contains(key);
		}
		if (HTML.Tag.TABLE.equals(tag.getParent().getName())) {
			return !TABLE_IN_ROW.contains(key);
		}
		if (HTML.Tag.TD.equalsIgnoreCase(tag.getParent().getName())) {
			return !TD_TO_CONTENT.contains(key);
		}
        if (HTML.Tag.DIV.equalsIgnoreCase(tag.getParent().getName())) {
			return !DIV_TO_CONTENT.contains(key);
		}

		return true;
	}

}
