org.apache.struts2.components: public class: If

org.apache.struts2.components
public class: If [javadoc | source]

java.lang.Object
   org.apache.struts2.components.Component
      org.apache.struts2.components.If

Perform basic condition flow. 'If' tag could be used by itself or with 'Else If' Tag and/or single/multiple 'Else' Tag.

test* (Boolean) - Logic to determined if body of tag is to be displayed


<s:if test="%{false}">
<div>Will Not Be Executed</div>
</s:if>
<s:elseif test="%{true}">
<div>Will Be Executed</div>
</s:elseif>
<s:else>
<div>Will Not Be Executed</div>
</s:else>

Also see:

Else

ElseIf

Field Summary
public static final String	ANSWER
Boolean	answer
String	test

Fields inherited from org.apache.struts2.components.Component:
COMPONENT_STACK, stack, parameters, id, actionMapper

Constructor:
public If(ValueStack stack) { super(stack); }

Method from org.apache.struts2.components.If Summary:
end, setTest, start

Methods from org.apache.struts2.components.Component:
addAllParameters, addParameter, altSyntax, copyParams, determineActionURL, determineActionURL, determineNamespace, end, end, fieldError, findAncestor, findString, findString, findValue, findValue, findValue, getComponentStack, getId, getParameters, getStack, popComponentStack, setActionMapper, setId, start, toString, usesBody

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.struts2.components.If Detail:
public boolean end(Writer writer, String body) { stack.getContext().put(ANSWER, answer); return super.end(writer, body); }
public void setTest(String test) { this.test = test; }
public boolean start(Writer writer) { answer = (Boolean) findValue(test, Boolean.class); if (answer == null) { answer = Boolean.FALSE; } stack.getContext().put(ANSWER, answer); return answer.booleanValue(); }

Method from org.apache.struts2.components.If Detail:

 public boolean end(Writer writer,
    String body) {
        stack.getContext().put(ANSWER, answer);
        return super.end(writer, body);
}

 public  void setTest(String test) {
        this.test = test;
}

 public boolean start(Writer writer) {
        answer = (Boolean) findValue(test, Boolean.class);
        if (answer == null) {
            answer = Boolean.FALSE;
        }
        stack.getContext().put(ANSWER, answer);
        return answer.booleanValue();
}