/*
* $Id: Form.java 1076544 2011-03-03 07:19:37Z lukaszlenart $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.struts2.components;
import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.config.Configuration;
import com.opensymphony.xwork2.config.RuntimeConfiguration;
import com.opensymphony.xwork2.config.entities.ActionConfig;
import com.opensymphony.xwork2.config.entities.InterceptorMapping;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.interceptor.MethodFilterInterceptorUtil;
import com.opensymphony.xwork2.util.ValueStack;
import com.opensymphony.xwork2.validator.ActionValidatorManager;
import com.opensymphony.xwork2.validator.FieldValidator;
import com.opensymphony.xwork2.validator.ValidationInterceptor;
import com.opensymphony.xwork2.validator.Validator;
import org.apache.struts2.StrutsConstants;
import org.apache.struts2.views.annotations.StrutsTag;
import org.apache.struts2.views.annotations.StrutsTagAttribute;
import org.apache.commons.lang.StringUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.*;
import java.util.Set;
/**
* <!-- START SNIPPET: javadoc -->
* <p/>
* Renders HTML an input form.<p/>
* <p/>
* The remote form allows the form to be submitted without the page being refreshed. The results from the form
* can be inserted into any HTML element on the page.<p/>
* <p/>
* NOTE:<p/>
* The order / logic in determining the posting url of the generated HTML form is as follows:-
* <ol>
* <li>
* If the action attribute is not specified, then the current request will be used to
* determine the posting url
* </li>
* <li>
* If the action is given, Struts will try to obtain an ActionConfig. This will be
* successfull if the action attribute is a valid action alias defined struts.xml.
* </li>
* <li>
* If the action is given and is not an action alias defined in struts.xml, Struts
* will used the action attribute as if it is the posting url, separting the namespace
* from it and using UrlHelper to generate the final url.
* </li>
* </ol>
* <p/>
* <!-- END SNIPPET: javadoc -->
* <p/>
* <p/> <b>Examples</b>
* <p/>
* <pre>
* <!-- START SNIPPET: example -->
* <p/>
* <s:form ... />
* <p/>
* <!-- END SNIPPET: example -->
* </pre>
*
*/
@StrutsTag(
name="form",
tldTagClass="org.apache.struts2.views.jsp.ui.FormTag",
description="Renders an input form",
allowDynamicAttributes=true)
public class Form extends ClosingUIBean {
public static final String OPEN_TEMPLATE = "form";
public static final String TEMPLATE = "form-close";
private int sequence = 0;
protected String onsubmit;
protected String onreset;
protected String action;
protected String target;
protected String enctype;
protected String method;
protected String namespace;
protected String validate;
protected String portletMode;
protected String windowState;
protected String acceptcharset;
protected boolean includeContext = true;
protected String focusElement;
protected Configuration configuration;
protected ObjectFactory objectFactory;
protected UrlRenderer urlRenderer;
protected ActionValidatorManager actionValidatorManager;
public Form(ValueStack stack, HttpServletRequest request, HttpServletResponse response) {
super(stack, request, response);
}
protected boolean evaluateNameValue() {
return false;
}
public String getDefaultOpenTemplate() {
return OPEN_TEMPLATE;
}
protected String getDefaultTemplate() {
return TEMPLATE;
}
@Inject
public void setConfiguration(Configuration configuration) {
this.configuration = configuration;
}
@Inject
public void setObjectFactory(ObjectFactory objectFactory) {
this.objectFactory = objectFactory;
}
@Inject
public void setUrlRenderer(UrlRenderer urlRenderer) {
this.urlRenderer = urlRenderer;
}
@Inject
public void setActionValidatorManager(ActionValidatorManager mgr) {
this.actionValidatorManager = mgr;
}
/*
* Revised for Portlet actionURL as form action, and add wwAction as hidden
* field. Refer to template.simple/form.vm
*/
protected void evaluateExtraParams() {
super.evaluateExtraParams();
if (validate != null) {
addParameter("validate", findValue(validate, Boolean.class));
}
if (name == null) {
//make the name the same as the id
String id = (String) getParameters().get("id");
if (StringUtils.isNotEmpty(id)) {
addParameter("name", id);
}
}
if (onsubmit != null) {
addParameter("onsubmit", findString(onsubmit));
}
if (onreset != null) {
addParameter("onreset", findString(onreset));
}
if (target != null) {
addParameter("target", findString(target));
}
if (enctype != null) {
addParameter("enctype", findString(enctype));
}
if (method != null) {
addParameter("method", findString(method));
}
if (acceptcharset != null) {
addParameter("acceptcharset", findString(acceptcharset));
}
// keep a collection of the tag names for anything special the templates might want to do (such as pure client
// side validation)
if (!parameters.containsKey("tagNames")) {
// we have this if check so we don't do this twice (on open and close of the template)
addParameter("tagNames", new ArrayList());
}
if (focusElement != null) {
addParameter("focusElement", findString(focusElement));
}
}
/**
* Form component determine the its HTML element id as follows:-
* <ol>
* <li>if an 'id' attribute is specified.</li>
* <li>if an 'action' attribute is specified, it will be used as the id.</li>
* </ol>
*/
protected void populateComponentHtmlId(Form form) {
if (id != null) {
addParameter("id", escape(id));
}
// if no id given, it will be tried to generate it from the action attribute
// by the urlRenderer implementation
urlRenderer.renderFormUrl(this);
}
/**
* Evaluate client side JavaScript Enablement.
* @param actionName the actioName to check for
* @param namespace the namespace to check for
* @param actionMethod the method to ckeck for
*/
protected void evaluateClientSideJsEnablement(String actionName, String namespace, String actionMethod) {
// Only evaluate if Client-Side js is to be enable when validate=true
Boolean validate = (Boolean) getParameters().get("validate");
if (validate != null && validate) {
addParameter("performValidation", Boolean.FALSE);
RuntimeConfiguration runtimeConfiguration = configuration.getRuntimeConfiguration();
ActionConfig actionConfig = runtimeConfiguration.getActionConfig(namespace, actionName);
if (actionConfig != null) {
List<InterceptorMapping> interceptors = actionConfig.getInterceptors();
for (InterceptorMapping interceptorMapping : interceptors) {
if (ValidationInterceptor.class.isInstance(interceptorMapping.getInterceptor())) {
ValidationInterceptor validationInterceptor = (ValidationInterceptor) interceptorMapping.getInterceptor();
Set excludeMethods = validationInterceptor.getExcludeMethodsSet();
Set includeMethods = validationInterceptor.getIncludeMethodsSet();
if (MethodFilterInterceptorUtil.applyMethod(excludeMethods, includeMethods, actionMethod)) {
addParameter("performValidation", Boolean.TRUE);
}
return;
}
}
}
}
}
public List getValidators(String name) {
Class actionClass = (Class) getParameters().get("actionClass");
if (actionClass == null) {
return Collections.EMPTY_LIST;
}
List<Validator> all = actionValidatorManager.getValidators(actionClass, (String) getParameters().get("actionName"));
List<Validator> validators = new ArrayList<Validator>();
for (Validator validator : all) {
if (validator instanceof FieldValidator) {
FieldValidator fieldValidator = (FieldValidator) validator;
if (fieldValidator.getFieldName().equals(name)) {
validators.add(fieldValidator);
}
}
}
return validators;
}
/**
* Get a incrementing sequence unique to this <code>Form</code> component.
* It is used by <code>Form</code> component's child that might need a
* sequence to make them unique.
*
* @return int
*/
protected int getSequence() {
return sequence++;
}
@StrutsTagAttribute(description="HTML onsubmit attribute")
public void setOnsubmit(String onsubmit) {
this.onsubmit = onsubmit;
}
@StrutsTagAttribute(description="HTML onreset attribute")
public void setOnreset(String onreset) {
this.onreset = onreset;
}
@StrutsTagAttribute(description="Set action name to submit to, without .action suffix", defaultValue="current action")
public void setAction(String action) {
this.action = action;
}
@StrutsTagAttribute(description="HTML form target attribute")
public void setTarget(String target) {
this.target = target;
}
@StrutsTagAttribute(description="HTML form enctype attribute")
public void setEnctype(String enctype) {
this.enctype = enctype;
}
@StrutsTagAttribute(description="HTML form method attribute")
public void setMethod(String method) {
this.method = method;
}
@StrutsTagAttribute(description="Namespace for action to submit to", defaultValue="current namespace")
public void setNamespace(String namespace) {
this.namespace = namespace;
}
@StrutsTagAttribute(description="Whether client side/remote validation should be performed. Only" +
" useful with theme xhtml/ajax", type="Boolean", defaultValue="false")
public void setValidate(String validate) {
this.validate = validate;
}
@StrutsTagAttribute(description="The portlet mode to display after the form submit")
public void setPortletMode(String portletMode) {
this.portletMode = portletMode;
}
@StrutsTagAttribute(description="The window state to display after the form submit")
public void setWindowState(String windowState) {
this.windowState = windowState;
}
@StrutsTagAttribute(description="The accepted charsets for this form. The values may be comma or blank delimited.")
public void setAcceptcharset(String acceptcharset) {
this.acceptcharset = acceptcharset;
}
@StrutsTagAttribute(description="Id of element that will receive the focus when page loads.")
public void setFocusElement(String focusElement) {
this.focusElement = focusElement;
}
@StrutsTagAttribute(description="Whether actual context should be included in URL", type="Boolean", defaultValue="true")
public void setIncludeContext(boolean includeContext) {
this.includeContext = includeContext;
}
}
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