
com.flamenk.article.manipulators.OnClickNodeManipulator Maven / Gradle / Ivy
/*
* Copyright 2013 Torindo Nesci.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.flamenk.article.manipulators;
import com.flamenk.TagConstants;
import com.flamenk.article.Article;
import com.flamenk.dom.HtmlDocument;
import com.flamenk.dom.HtmlNode;
import static com.flamenk.dom.HtmlNodeDisplayMode.NOT_DISPLAY;
import com.flamenk.dom.HtmlNodeRange;
import com.flamenk.util.Consumer;
import static com.flamenk.util.NodeUtil.hasName;
import com.google.common.base.Optional;
/**
* A manipulator of a and span nodes
* having the onclick properties.
* The a and span with the onclick
* are removed from the output if:
*
* - Are before the max range.
* - Are after the max range.
*
*
* If they are after the max range, the subsequent nodes are removed as well.
* If they are in a list, the list is removed as well including the list header.
*
*
This implementation is Thread Safe.
* @author Torindo Nesci
*/
public final class OnClickNodeManipulator implements HtmlNodeManipulator {
private static final OnClickNodeManipulator INSTANCE =
new OnClickNodeManipulator();
private static final Consumer HIDE_NODE_CONSUMER =
new Consumer() {
public void consume(HtmlNode node) {
node.setDisplayMode(NOT_DISPLAY);
}
};
private static final String ONCLICK = "onclick";
private OnClickNodeManipulator() {
}
/**
* Return the singleton instance of {@link OnClickNodeManipulator}.
*
* @return The instance of {@link OnClickNodeManipulator}.
*/
public static OnClickNodeManipulator getInstance() {
return INSTANCE;
}
@Override
public void manipulate(HtmlNode node, Article article, HtmlNodeRange maxRankRange) {
if (!hasName(node, TagConstants.A)
&& !hasName(node, TagConstants.SPAN)) {
return;
}
if (!node.hasAttribute(ONCLICK) || maxRankRange.isNodeInRange(node)) {
return;
}
Optional listNode = ListUtil.listNodeFor(node);
if (!listNode.isPresent() && maxRankRange.isNodeBeforeRange(node)) {
node.setDisplayMode(NOT_DISPLAY);
} else if (!listNode.isPresent() && maxRankRange.isNodeAfterRange(node)) {
HtmlDocument htmlDoc = node.getHtmlDocument();
HtmlNodeRange range = new HtmlNodeRange().withIncludedStartNode(node);
htmlDoc.consumeNodesInRange(range, HIDE_NODE_CONSUMER);
} else if (listNode.isPresent() && maxRankRange.isNodeBeforeRange(node)) {
listNode.get().setDisplayMode(NOT_DISPLAY);
ListUtil.hideListHeader(listNode.get());
} else if (listNode.isPresent() && maxRankRange.isNodeAfterRange(node)) {
HtmlDocument htmlDoc = node.getHtmlDocument();
HtmlNodeRange range =
new HtmlNodeRange()
.withIncludedStartNode(listNode.get());
htmlDoc.consumeNodesInRange(range, HIDE_NODE_CONSUMER);
ListUtil.hideListHeader(listNode.get());
}
}
}
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