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/*
* Copyright 2011 Vaadin Ltd.
*
* 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.vaadin.sass.internal.visitor;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import com.vaadin.sass.internal.ScssStylesheet;
import com.vaadin.sass.internal.tree.BlockNode;
import com.vaadin.sass.internal.tree.ExtendNode;
import com.vaadin.sass.internal.tree.Node;
public class ExtendNodeHandler {
private static Map<String, List<ArrayList<String>>> extendsMap = new HashMap<String, List<ArrayList<String>>>();
public static void traverse(ExtendNode node) throws Exception {
buildExtendsMap(node);
modifyTree(ScssStylesheet.get());
}
private static void modifyTree(Node node) throws Exception {
for (Node child : node.getChildren()) {
if (child instanceof BlockNode) {
BlockNode blockNode = (BlockNode) child;
String selectorString = blockNode.getSelectors();
if (extendsMap.get(selectorString) != null) {
for (ArrayList<String> sList : extendsMap
.get(selectorString)) {
ArrayList<String> clone = (ArrayList<String>) sList
.clone();
addAdditionalSelectorListToBlockNode(blockNode, clone,
null);
}
} else {
for (Entry<String, List<ArrayList<String>>> entry : extendsMap
.entrySet()) {
if (selectorString.contains(entry.getKey())) {
for (ArrayList<String> sList : entry.getValue()) {
ArrayList<String> clone = (ArrayList<String>) sList
.clone();
addAdditionalSelectorListToBlockNode(blockNode,
clone, entry.getKey());
}
}
}
}
}
}
}
private static void buildExtendsMap(ExtendNode node) {
String extendedString = node.getListAsString();
if (extendsMap.get(extendedString) == null) {
extendsMap.put(extendedString, new ArrayList<ArrayList<String>>());
}
extendsMap.get(extendedString).add(
((BlockNode) node.getParentNode()).getSelectorList());
}
private static void addAdditionalSelectorListToBlockNode(
BlockNode blockNode, ArrayList<String> list, String selectorString) {
if (list != null) {
for (int i = 0; i < list.size(); i++) {
if (selectorString == null) {
blockNode.getSelectorList().add(list.get(i));
} else {
ArrayList<String> newTags = new ArrayList<String>();
for (final String existing : blockNode.getSelectorList()) {
if (existing.contains(selectorString)) {
newTags.add(existing.replace(selectorString,
list.get(i)));
}
}
blockNode.getSelectorList().addAll(newTags);
}
}
}
}
}
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