/*
* Copyright 2013-2015 Skynav, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY SKYNAV, INC. AND ITS CONTRIBUTORS “AS IS” AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SKYNAV, INC. OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.skynav.ttv.verifier.ttml.style;
import java.util.List;
import java.util.Set;
import javax.xml.namespace.QName;
import org.w3c.dom.Node;
import org.xml.sax.Locator;
import com.skynav.ttv.model.Model;
import com.skynav.ttv.util.Location;
import com.skynav.ttv.util.Reporter;
import com.skynav.ttv.verifier.StyleValueVerifier;
import com.skynav.ttv.verifier.VerifierContext;
import com.skynav.ttv.verifier.util.IdReferences;
import com.skynav.ttv.verifier.util.Styles;
public class StyleAttributeVerifier implements StyleValueVerifier {
public boolean verify(Object value, Location location, VerifierContext context) {
boolean failed = false;
assert value instanceof List<?>;
List<?> styles = (List<?>) value;
if (styles.size() > 0) {
Model model = context.getModel();
QName name = location.getAttributeName();
QName targetName = model.getIdReferenceTargetName(name);
Class<?> targetClass = model.getIdReferenceTargetClass(name);
List<List<QName>> ancestors = model.getIdReferencePermissibleAncestors(name);
Object styleLast = null;
Set<String> styleIdentifiers = new java.util.HashSet<String>();
for (Object style : styles) {
Node node = context.getXMLNode(style);
if (!Styles.isStyleReference(node, style, location, context, targetClass, ancestors)) {
Styles.badStyleReference(node, style, location, context, name, targetName, targetClass, ancestors);
failed = true;
}
String id = IdReferences.getId(style);
Reporter reporter = context.getReporter();
Locator locator = location.getLocator();
if (styleIdentifiers.contains(id)) {
if (reporter.isWarningEnabled("duplicate-idref-in-style")) {
if (reporter.logWarning(reporter.message(locator, "*KEY*",
"Duplicate IDREF ''{0}'' should not appear in {1}.", IdReferences.getId(style), name))) {
failed = true;
}
}
} else
styleIdentifiers.add(id);
if ((styleLast != null) && referencesSameStyle(style, styleLast)) {
if (reporter.isWarningEnabled("duplicate-idref-in-style-no-intervening")) {
if (reporter.logWarning(reporter.message(locator, "*KEY*",
"Duplicate IDREF ''{0}'' should not appear in {1} without distinct intervening IDREF.", IdReferences.getId(style), name))) {
failed = true;
}
}
}
styleLast = style;
}
}
return !failed;
}
private static boolean referencesSameStyle(Object s1, Object s2) {
String id1 = IdReferences.getId(s1);
String id2 = IdReferences.getId(s2);
return id1.equals(id2);
}
}