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/*
* 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.commons.OptionEntry;
import org.apache.empire.commons.Options;
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 RadioInputControl extends InputControl
{
private static String RBCHECK_POSTFIX = "__RBCHECK";
@Override
public Object getFieldValue(String name, RequestParamProvider request, Locale locale, Column column)
{
Object val = super.getFieldValue(name, request, locale, column);
if (val==NO_VALUE)
{ // Is Hidden Value present
if (request.getRequestParam(name + RBCHECK_POSTFIX)!=null)
return NULL_VALUE;
}
return val;
}
@Override
public void renderInput(HtmlWriter writer, ControlInfo ci)
{
HtmlTag radioGroupWrapper = writer.startTag("table");
radioGroupWrapper.addAttribute("cellspacing", "0");
radioGroupWrapper.addAttribute("cellpadding", "0");
radioGroupWrapper.addAttribute("id", ci.getId());
radioGroupWrapper.addAttribute("class", ci.getCssClass());
radioGroupWrapper.addAttribute("style", ci.getCssStyle());
radioGroupWrapper.beginBody();
// Get options
Options options = ci.getOptions();
if (options!=null)
{ // Doing a label top, radio bottom table layout
if (hasFormatOption(ci, "labelAbove"))
{
renderLabelAboveControl(writer, ci, options);
}
else
{ // Label next to control (to the left or to the right)
renderLabelNextToControl(writer, ci, options, hasFormatOption(ci, "labelLeft"));
}
// Add hidden field for NULL_VALUE checking
if (options.contains(ci.getValue())==false && ci.getDisabled()==false)
{ // Additionally add a hidden field
// to detect unchecked state
HtmlTag hidden = writer.startTag("input");
hidden.addAttribute("type", "hidden");
hidden.addAttribute("name", ci.getName() + RBCHECK_POSTFIX);
hidden.addAttribute("value", ci.getValue());
hidden.endTag();
}
}
else
{ // Error
log.error("No option list supplied for control type 'radio'");
}
// End Tag
radioGroupWrapper.endTag();
}
// render helpers
private void renderInput(HtmlWriter writer, ControlInfo ci, OptionEntry entry, int pairs)
{
boolean disabled = ci.getDisabled();
// Get the current value
Object current = ci.getValue();
Object value = entry.getValue();
// Check if the current value is the option being rendered
HtmlTag input = writer.startTag("input");
input.addAttribute("type", "radio");
input.addAttribute("id", ci.getId() + pairs);
input.addAttribute("value", value);
input.addAttribute("name", ci.getName());
// Set Checked
if(ObjectUtils.compareEqual(current, value))
{
input.addAttribute("checked");
}
if (disabled)
{
input.addAttribute("disabled");
}
// Event Attributes
input.addAttribute("onclick", ci.getOnclick());
input.addAttribute("onchange", ci.getOnchange());
input.addAttribute("onfocus", ci.getOnfocus());
input.addAttribute("onblur", ci.getOnblur());
input.endTag();
}
private void renderLabel(HtmlWriter writer, ControlInfo ci, OptionEntry entry, int pairs)
{
HtmlTag label = writer.startTag("label");
label.addAttribute("for", ci.getId() + pairs);
label.beginBody(ci.getTranslation(entry.getText()));
label.endTag();
}
private void renderLabelAboveControl(HtmlWriter writer, ControlInfo ci, Options options)
{
int pairs = 1;
HtmlTag row = writer.startTag("tr");
// do label row (th)
row.beginBody();
for (OptionEntry entry : options)
{
HtmlTag td = writer.startTag("th");
td.beginBody();
renderLabel(writer, ci, entry, pairs);
td.endTag();
pairs ++;
}
row.endTag();
// do radio input row (td)
pairs = 1;
row = writer.startTag("tr");
row.beginBody();
for (OptionEntry entry : options)
{
HtmlTag td = writer.startTag("td");
td.beginBody();
renderInput(writer, ci, entry, pairs);
td.endTag();
pairs ++;
}
row.endTag();
}
private void renderLabelNextToControl(HtmlWriter writer, ControlInfo ci, Options options, boolean labelFirst)
{
int pairs = 1;
// Render out the radio options in a single row table
HtmlTag row = writer.startTag("tr");
row.beginBody();
for (OptionEntry entry : options)
{
HtmlTag radioOptionWrapper = writer.startTag("td");
radioOptionWrapper.beginBody();
// Decide render order: (label, input) or (input, label)
if( labelFirst )
{ // render td's with label buttons first then radio
renderLabel(writer, ci, entry, pairs);
renderInput(writer, ci, entry, pairs);
}
else
{ // render td's with radio buttons first then label
renderInput(writer, ci, entry, pairs);
renderLabel(writer, ci, entry, pairs);
}
pairs ++;
radioOptionWrapper.endTag();
}
row.endTag();
}
}
