/*
* Copyright 2011 The authors
* 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.intellij.struts2.freemarker;
import com.intellij.freemarker.psi.FtlNameValuePair;
import com.intellij.freemarker.psi.FtlStringLiteral;
import com.intellij.freemarker.psi.directives.FtlMacro;
import com.intellij.lang.injection.MultiHostInjector;
import com.intellij.lang.injection.MultiHostRegistrar;
import com.intellij.lang.javascript.JavaScriptSupportLoader;
import com.intellij.openapi.util.TextRange;
import com.intellij.patterns.PatternCondition;
import com.intellij.patterns.PsiElementPattern;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiLanguageInjectionHost;
import com.intellij.util.ProcessingContext;
import org.jetbrains.annotations.NotNull;
import java.util.Collections;
import java.util.List;
import static com.intellij.patterns.PlatformPatterns.psiElement;
/**
* Adds JavaScript support for Struts UI/jQuery-plugin attributes in Freemarker.
*
* @author Yann Cébron
*/
public class FreeMarkerJavaScriptInjector implements MultiHostInjector {
private static final PsiElementPattern.Capture<FtlStringLiteral> JS_ELEMENT_PATTERN =
psiElement(FtlStringLiteral.class)
.withParent(psiElement(FtlNameValuePair.class).with(new PatternCondition<FtlNameValuePair>("S2 taglib JS Attributes") {
@Override
public boolean accepts(@NotNull final FtlNameValuePair ftlNameValuePair, final ProcessingContext processingContext) {
final String name = ftlNameValuePair.getName();
return name != null &&
(name.startsWith("on") || name.startsWith("doubleOn")) &&
!name.endsWith("Topics");
}
}))
.withSuperParent(3, psiElement(FtlMacro.class).with(FreemarkerInjectionConstants.TAGLIB_PREFIX));
public void getLanguagesToInject(@NotNull final MultiHostRegistrar registrar, @NotNull final PsiElement host) {
if (JS_ELEMENT_PATTERN.accepts(host)) {
registrar.startInjecting(JavaScriptSupportLoader.JAVASCRIPT.getLanguage())
.addPlace(null, null, (PsiLanguageInjectionHost) host,
TextRange.from(1, host.getTextLength() - 2))
.doneInjecting();
}
}
@NotNull
public List<? extends Class<? extends PsiElement>> elementsToInjectIn() {
return Collections.singletonList(FtlStringLiteral.class);
}
}