/*
* Copyright 2009 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.template.soy.bididirectives;
import com.google.common.collect.ImmutableSet;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import com.google.template.soy.data.SoyData;
import com.google.template.soy.internal.i18n.BidiGlobalDir;
import com.google.template.soy.internal.i18n.SoyBidiUtils;
import com.google.template.soy.javasrc.restricted.JavaCodeUtils;
import com.google.template.soy.javasrc.restricted.JavaExpr;
import com.google.template.soy.javasrc.restricted.SoyJavaSrcFunctionUtils;
import com.google.template.soy.javasrc.restricted.SoyJavaSrcPrintDirective;
import com.google.template.soy.jssrc.restricted.JsExpr;
import com.google.template.soy.jssrc.restricted.SoyJsSrcPrintDirective;
import com.google.template.soy.tofu.restricted.SoyAbstractTofuPrintDirective;
import java.util.List;
import java.util.Set;
/**
* A directive that maybe wraps the output within Unicode bidi control characters -- start character
* is either LRE (U+202A) or RLE (U+202B), and end character is always PDF (U+202C). This wrapping
* is only applied when the output text's bidi directionality is different from the bidi global
* directionality.
*
* @author Kai Huang
* @author Aharon Lanin
*/
@Singleton
public class BidiUnicodeWrapDirective extends SoyAbstractTofuPrintDirective
implements SoyJsSrcPrintDirective, SoyJavaSrcPrintDirective {
/** Provider for the current bidi global directionality. */
private final Provider<BidiGlobalDir> bidiGlobalDirProvider;
/**
* @param bidiGlobalDirProvider Provider for the current bidi global directionality.
*/
@Inject
BidiUnicodeWrapDirective(Provider<BidiGlobalDir> bidiGlobalDirProvider) {
this.bidiGlobalDirProvider = bidiGlobalDirProvider;
}
@Override public String getName() {
return "|bidiUnicodeWrap";
}
@Override public Set<Integer> getValidArgsSizes() {
return ImmutableSet.of(0);
}
@Override public boolean shouldCancelAutoescape() {
return false;
}
@Override public SoyData apply(SoyData value, List<SoyData> args) {
String str = SoyBidiUtils.getBidiFormatter(bidiGlobalDirProvider.get().getStaticValue())
.unicodeWrap(value.toString(), true);
return SoyData.createFromExistingData(str);
}
@Override public JsExpr applyForJsSrc(JsExpr value, List<JsExpr> args) {
String codeSnippet = bidiGlobalDirProvider.get().getCodeSnippet();
return new JsExpr(
"soy.$$bidiUnicodeWrap(" + codeSnippet + ", " + value.getText() + ")", Integer.MAX_VALUE);
}
@Override public JavaExpr applyForJavaSrc(JavaExpr value, List<JavaExpr> args) {
String bidiFunctionName = SoyBidiUtils.class.getName() + ".getBidiFormatter(" +
bidiGlobalDirProvider.get().getCodeSnippet() + ").unicodeWrap";
return SoyJavaSrcFunctionUtils.toStringJavaExpr(
JavaCodeUtils.genNewStringData(
JavaCodeUtils.genFunctionCall(
bidiFunctionName, JavaCodeUtils.genCoerceString(value), "true")));
}
}