/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.portal.template.velocity.internal;
import com.liferay.portal.configuration.metatype.bnd.util.ConfigurableUtil;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.model.Theme;
import com.liferay.portal.kernel.service.permission.RolePermissionUtil;
import com.liferay.portal.kernel.template.TemplateContextContributor;
import com.liferay.portal.kernel.theme.PortletDisplay;
import com.liferay.portal.kernel.theme.ThemeDisplay;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.SetUtil;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.template.TemplateContextHelper;
import com.liferay.portal.template.TemplatePortletPreferences;
import com.liferay.portal.template.velocity.configuration.VelocityEngineConfiguration;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import org.apache.velocity.tools.generic.DateTool;
import org.apache.velocity.tools.generic.EscapeTool;
import org.apache.velocity.tools.generic.IteratorTool;
import org.apache.velocity.tools.generic.ListTool;
import org.apache.velocity.tools.generic.MathTool;
import org.apache.velocity.tools.generic.NumberTool;
import org.apache.velocity.tools.generic.SortTool;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.osgi.service.component.annotations.Modified;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.osgi.service.component.annotations.ReferencePolicyOption;
/**
* @author Brian Wing Shun Chan
* @author Raymond Augé
* @author Peter Fellwock
*/
@Component(
configurationPid = "com.liferay.portal.template.velocity.configuration.VelocityEngineConfiguration",
configurationPolicy = ConfigurationPolicy.OPTIONAL, immediate = true,
service = {TemplateContextHelper.class, VelocityTemplateContextHelper.class}
)
public class VelocityTemplateContextHelper extends TemplateContextHelper {
@Override
public Set<String> getRestrictedVariables() {
return SetUtil.fromArray(
_velocityEngineConfiguration.restrictedVariables());
}
@Override
public void prepare(
Map<String, Object> contextObjects, HttpServletRequest request) {
super.prepare(contextObjects, request);
// Theme display
ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
WebKeys.THEME_DISPLAY);
if (themeDisplay != null) {
Theme theme = themeDisplay.getTheme();
// Full css and templates path
String servletContextName = GetterUtil.getString(
theme.getServletContextName());
contextObjects.put(
"fullCssPath",
servletContextName + theme.getVelocityResourceListener() +
theme.getCssPath());
String fullTemplatesPath =
servletContextName + theme.getVelocityResourceListener() +
theme.getTemplatesPath();
contextObjects.put("fullTemplatesPath", fullTemplatesPath);
// Init
contextObjects.put("init", fullTemplatesPath + "/init.vm");
}
// Insert custom vm variables
PortletDisplay portletDisplay = themeDisplay.getPortletDisplay();
Map<String, Object> vmVariables =
(Map<String, Object>)request.getAttribute(
WebKeys.VM_VARIABLES + portletDisplay.getId());
if (vmVariables != null) {
for (Map.Entry<String, Object> entry : vmVariables.entrySet()) {
String key = entry.getKey();
Object value = entry.getValue();
if (Validator.isNotNull(key)) {
contextObjects.put(key, value);
}
}
}
// Custom template context contributors
for (TemplateContextContributor templateContextContributor :
_templateContextContributors) {
templateContextContributor.prepare(contextObjects, request);
}
}
@Activate
@Modified
protected void activate(Map<String, Object> properties) {
_velocityEngineConfiguration = ConfigurableUtil.createConfigurable(
VelocityEngineConfiguration.class, properties);
}
@Override
protected void populateExtraHelperUtilities(
Map<String, Object> velocityContext) {
// Date tool
velocityContext.put("dateTool", new DateTool());
// Escape tool
velocityContext.put("escapeTool", new EscapeTool());
// Iterator tool
velocityContext.put("iteratorTool", new IteratorTool());
// List tool
velocityContext.put("listTool", new ListTool());
// Math tool
velocityContext.put("mathTool", new MathTool());
// Number tool
velocityContext.put("numberTool", new NumberTool());
// Portlet preferences
velocityContext.put(
"velocityPortletPreferences", new TemplatePortletPreferences());
// Sort tool
velocityContext.put("sortTool", new SortTool());
// Permissions
try {
velocityContext.put(
"rolePermission", RolePermissionUtil.getRolePermission());
}
catch (SecurityException se) {
_log.error(se, se);
}
}
@Reference(
cardinality = ReferenceCardinality.MULTIPLE,
policy = ReferencePolicy.DYNAMIC,
policyOption = ReferencePolicyOption.GREEDY,
target = "(type=" + TemplateContextContributor.TYPE_GLOBAL + ")",
unbind = "unregisterTemplateContextContributor"
)
protected synchronized void registerTemplateContextContributor(
TemplateContextContributor templateContextContributor) {
_templateContextContributors.add(templateContextContributor);
}
protected synchronized void unregisterTemplateContextContributor(
TemplateContextContributor templateContextContributor) {
_templateContextContributors.remove(templateContextContributor);
}
private static final Log _log = LogFactoryUtil.getLog(
VelocityTemplateContextHelper.class);
private static volatile VelocityEngineConfiguration
_velocityEngineConfiguration;
private final List<TemplateContextContributor>
_templateContextContributors = new ArrayList<>();
}