com.google.gwt.resources.gss.RenamingSubstitutionMap Maven / Gradle / Ivy
/*
* Copyright 2014 Google Inc.
*
* 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.google.gwt.resources.gss;
import com.google.gwt.thirdparty.common.css.SubstitutionMap;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* This SubstitutionMap is used for renaming each style classes of the ast by its corresponding
* obfuscated name.
*
* It takes care of eventual prefix and does not rename external style classes.
*
* It lists the eventual external style class candidates (class without associated obfuscation
* name)
*/
public class RenamingSubstitutionMap implements SubstitutionMap {
private final Map replacementMap;
private Set classes;
private Set externalClassCandidates;
public RenamingSubstitutionMap(Map> replacementsWithPrefix) {
this.replacementMap = computeReplacementMap(replacementsWithPrefix);
classes = new HashSet();
externalClassCandidates = new HashSet();
}
private Map computeReplacementMap(
Map> replacementsWithPrefix) {
Map result = new HashMap();
for (Entry> entry : replacementsWithPrefix.entrySet()) {
final String prefix = entry.getKey();
Map replacement = new HashMap();
for (Entry replacementEntry : entry.getValue().entrySet()) {
replacement.put(prefix + replacementEntry.getKey(), replacementEntry.getValue());
}
result.putAll(replacement);
}
return result;
}
@Override
public String get(String key) {
classes.add(key);
String replacement = replacementMap.get(key);
if (replacement == null) {
// could be an external style class
externalClassCandidates.add(key);
return key;
}
return replacement;
}
public Set getStyleClasses() {
return classes;
}
public Set getExternalClassCandidates() {
return externalClassCandidates;
}
}