org.apache.struts2.interceptor: public class: CheckboxInterceptor

org.apache.struts2.interceptor
public class: CheckboxInterceptor [javadoc | source]

java.lang.Object
   org.apache.struts2.interceptor.CheckboxInterceptor

All Implemented Interfaces:
com.opensymphony.xwork2.interceptor.Interceptor

Looks for a hidden identification field that specifies the original value of the checkbox. If the checkbox isn't submitted, insert it into the parameters as if it was with the value of 'false'.

setUncheckedValue - The default value of an unchecked box can be overridden by setting the 'uncheckedValue' property.

Method from org.apache.struts2.interceptor.CheckboxInterceptor Summary:
destroy, init, intercept, setUncheckedValue
Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Method from org.apache.struts2.interceptor.CheckboxInterceptor Detail:

public void destroy()
{ }
public void init()
{ }
public String intercept(ActionInvocation ai) throws Exception
{ Map parameters = ai.getInvocationContext().getParameters(); Map< String, String[] > newParams = new HashMap< String, String[] >(); Set< Map.Entry > entries = parameters.entrySet(); for (Iterator< Map.Entry > iterator = entries.iterator(); iterator.hasNext();) { Map.Entry entry = iterator.next(); String key = (String)entry.getKey(); if (key.startsWith("__checkbox_")) { String name = key.substring("__checkbox_".length()); Object values = entry.getValue(); iterator.remove(); if (values != null && values instanceof String[] && ((String[])values).length > 1) { LOG.debug("Bypassing automatic checkbox detection due to multiple checkboxes of the same name: #1", name); continue; } // is this checkbox checked/submitted? if (!parameters.containsKey(name)) { // if not, let's be sure to default the value to false newParams.put(name, new String[]{uncheckedValue}); } } } parameters.putAll(newParams); return ai.invoke(); }
public void setUncheckedValue(String uncheckedValue)
{ this.uncheckedValue = uncheckedValue; }
Overrides the default value for an unchecked checkbox