/*
* 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.empire.struts2.jsp.controls;
import java.util.Locale;
import org.apache.empire.commons.ObjectUtils;
import org.apache.empire.data.Column;
import org.apache.empire.struts2.action.RequestParamProvider;
import org.apache.empire.struts2.html.HtmlWriter;
import org.apache.empire.struts2.html.HtmlWriter.HtmlTag;
public class CheckboxInputControl extends InputControl
{
private static String CHECK_POSTFIX = "__CBCHECK";
@Override
public Object getFieldValue(String name, RequestParamProvider request, Locale locale, Column column)
{
// If the checkbox was checked then a value is present in request params
// otherwise no value will be present.
String val = request.getRequestParam(name);
if (val!=null)
return Boolean.TRUE;
// Is Hidden Value present
if (request.getRequestParam(name + CHECK_POSTFIX)==null)
return NO_VALUE;
// Checkbox is present, but was unchecked
return Boolean.FALSE;
}
@Override
public void renderText(HtmlWriter writer, ValueInfo vi)
{
// Always render checkboxes as controls
HtmlTag input = writer.startTag("input");
input.addAttribute("type", "checkbox");
input.addAttribute("id", vi.getId());
input.addAttribute("class", vi.getCssClass());
input.addAttribute("style", vi.getCssStyle());
input.addAttribute("disabled");
// Decide whether to render the checkbox checked or not.
if (ObjectUtils.getBoolean(vi.getValue()))
input.addAttribute("checked");
input.endTag();
}
@Override
public void renderInput(HtmlWriter writer, ControlInfo ci)
{
if (ci.getDisabled())
{ // render disabled
renderText(writer, ci);
return;
}
// Render enabled
HtmlTag input = writer.startTag("input");
input.addAttribute("type", "checkbox");
input.addAttribute("id", ci.getId());
input.addAttribute("class", ci.getCssClass());
input.addAttribute("style", ci.getCssStyle());
input.addAttribute("name", ci.getName());
// Decide whether to render the checkbox checked or not.
if (ObjectUtils.getBoolean(ci.getValue()))
{
input.addAttribute("checked");
}
// Event Attributes
input.addAttribute("onclick", ci.getOnclick());
input.addAttribute("onchange", ci.getOnchange());
input.addAttribute("onfocus", ci.getOnfocus());
input.addAttribute("onblur", ci.getOnblur());
input.endTag();
// Additionally add a hidden field
// to detect unchecked state
HtmlTag hidden = writer.startTag("input");
hidden.addAttribute("type", "hidden");
hidden.addAttribute("name", ci.getName() + CHECK_POSTFIX);
hidden.addAttribute("value", ci.getValue());
hidden.endTag();
}
}