/*
* 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.FtlType;
import com.intellij.freemarker.psi.files.FtlFile;
import com.intellij.freemarker.psi.files.FtlGlobalVariableProvider;
import com.intellij.freemarker.psi.files.FtlXmlNamespaceType;
import com.intellij.freemarker.psi.variables.FtlLightVariable;
import com.intellij.freemarker.psi.variables.FtlPsiType;
import com.intellij.freemarker.psi.variables.FtlVariable;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtil;
import com.intellij.openapi.paths.PathReference;
import com.intellij.psi.*;
import com.intellij.psi.impl.source.jsp.JspManager;
import com.intellij.psi.xml.XmlDocument;
import com.intellij.psi.xml.XmlFile;
import com.intellij.struts2.StrutsConstants;
import com.intellij.struts2.StrutsIcons;
import com.intellij.struts2.dom.struts.action.Action;
import com.intellij.struts2.dom.struts.action.Result;
import com.intellij.struts2.dom.struts.model.StrutsManager;
import com.intellij.struts2.dom.struts.model.StrutsModel;
import com.intellij.struts2.dom.struts.strutspackage.ResultType;
import com.intellij.struts2.facet.StrutsFacet;
import com.intellij.util.Processor;
import com.intellij.xml.XmlNSDescriptor;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @author peter
*/
public class Struts2GlobalVariableProvider extends FtlGlobalVariableProvider {
@NotNull
public List<? extends FtlVariable> getGlobalVariables(final FtlFile file) {
final Module module = ModuleUtil.findModuleForPsiElement(file);
if (module == null) {
return Collections.emptyList();
}
if (StrutsFacet.getInstance(module) == null) {
return Collections.emptyList();
}
final List<FtlVariable> result = new ArrayList<FtlVariable>();
result.add(new MyFtlLightVariable("stack", file, (FtlType) null));
result.add(new MyFtlLightVariable("response", file, "javax.servlet.http.HttpServletResponse"));
result.add(new MyFtlLightVariable("res", file, "javax.servlet.http.HttpServletResponse"));
result.add(new MyFtlLightVariable("request", file, "javax.servlet.http.HttpServletRequest"));
result.add(new MyFtlLightVariable("req", file, "javax.servlet.http.HttpServletRequest"));
result.add(new MyFtlLightVariable("session", file, "javax.servlet.http.HttpSession"));
result.add(new MyFtlLightVariable("application", file, "javax.servlet.ServletContext"));
result.add(new MyFtlLightVariable("base", file, CommonClassNames.JAVA_LANG_STRING));
installTaglibSupport(result, module,
StrutsConstants.TAGLIB_STRUTS_UI_URI, StrutsConstants.TAGLIB_STRUTS_UI_PREFIX);
installTaglibSupport(result, module,
StrutsConstants.TAGLIB_JQUERY_PLUGIN_URI, StrutsConstants.TAGLIB_JQUERY_PLUGIN_PREFIX);
installTaglibSupport(result, module,
StrutsConstants.TAGLIB_JQUERY_RICHTEXT_PLUGIN_URI, StrutsConstants.TAGLIB_JQUERY_RICHTEXT_PLUGIN_PREFIX);
final Processor<Action> processor = new Processor<Action>() {
@Override
public boolean process(final Action action) {
final PsiClass actionClass = action.searchActionClass();
if (actionClass != null) {
for (final Result result1 : action.getResults()) {
final ResultType resultType = result1.getEffectiveResultType();
if (resultType != null &&
FreeMarkerStrutsResultContributor.FREEMARKER.equals(resultType.getName().getStringValue())) {
final PathReference reference = result1.getValue();
final PsiElement target = reference == null ? null : reference.resolve();
if (target != null &&
(file.getManager().areElementsEquivalent(file, target) ||
file.getManager().areElementsEquivalent(file.getOriginalFile(), target))) {
final PsiClassType actionType =
JavaPsiFacade.getInstance(actionClass.getProject()).getElementFactory().createType(actionClass);
final FtlPsiType ftlPsiType = FtlPsiType.wrap(actionType);
result.add(new MyFtlLightVariable("", action.getXmlTag(), ftlPsiType));
result.add(new MyFtlLightVariable("action", action.getXmlTag(), ftlPsiType));
return false; // stop after first match
}
}
}
}
return true;
}
};
for (final StrutsModel model : StrutsManager.getInstance(file.getProject()).getAllModels(module)) {
model.processActions(processor);
}
return result;
}
private static void installTaglibSupport(@NotNull final List<FtlVariable> result,
@NotNull final Module module,
@NotNull @NonNls final String taglibUri,
@NotNull @NonNls final String taglibPrefix) {
final XmlFile xmlFile = JspManager.getInstance(module.getProject()).getTldFileByUri(taglibUri, module, null);
if (xmlFile == null) {
return;
}
final XmlDocument document = xmlFile.getDocument();
if (document == null) {
return;
}
final XmlNSDescriptor descriptor = (XmlNSDescriptor) document.getMetaData();
if (descriptor == null) {
return;
}
PsiElement declaration = descriptor.getDeclaration();
if (declaration == null) {
declaration = xmlFile;
}
result.add(new MyFtlLightVariable(taglibPrefix, declaration, new FtlXmlNamespaceType(descriptor)));
}
private static class MyFtlLightVariable extends FtlLightVariable {
private MyFtlLightVariable(@NotNull @NonNls final String name,
@NotNull final PsiElement parent,
@Nullable final FtlType type) {
super(name, parent, type);
}
private MyFtlLightVariable(@NotNull @NonNls final String name,
@NotNull final PsiElement parent,
@NotNull @NonNls final String psiType) {
super(name, parent, psiType);
}
@Override
public Icon getIcon(final boolean open) {
return StrutsIcons.STRUTS_VARIABLE;
}
}
}