Source Code Cross Referenced for Else.java in  » J2EE » webwork-2.2.6 » com » opensymphony » webwork » components » Java Source Code / Java DocumentationJava Source Code and Java Documentation

01:        package com.opensymphony.webwork.components;
02:
03:        import com.opensymphony.xwork.util.OgnlValueStack;
04:
05:        import java.io.Writer;
06:        import java.util.Map;
07:
08:        /**
09:         * <!-- START SNIPPET: javadoc -->
10:         *
11:         * <p>Perform basic condition flow. 'If' tag could be used by itself or with 'Else If' Tag and/or single/multiple 'Else'
12:         * Tag.</p>
13:         *
14:         * <!-- END SNIPPET: javadoc -->
15:         *
16:         * <!-- START SNIPPET: params -->
17:         *
18:         * no params
19:         *
20:         * <!-- END SNIPPET: params -->
21:         *
22:         *
23:         * <pre>
24:         * <!-- START SNIPPET: example -->
25:         *  &lt;ww:if test="%{false}"&gt;
26:         * 	    &lt;div&gt;Will Not Be Executed&lt;/div&gt;
27:         *  &lt;/ww:if&gt;
28:         * 	&lt;ww:elseif test="%{true}"&gt;
29:         * 	    &lt;div&gt;Will Be Executed&lt;/div&gt;
30:         *  &lt;/ww:elseif&gt;
31:         *  &lt;ww:else&gt;
32:         * 	    &lt;div&gt;Will Not Be Executed&lt;/div&gt;
33:         *  &lt;/ww:else&gt;
34:         * <!-- END SNIPPET: example -->
35:         * </pre>
36:         *
37:         * @author Rick Salsa (rsal@mb.sympatico.ca)
38:         * @author tmjee
39:         * @ww.tag name="else" bodycontent="JSP" description="Else tag"  tld-tag-class="com.opensymphony.webwork.views.jsp.ElseTag"
40:         */
41:        public class Else extends Component {
42:            public Else(OgnlValueStack stack) {
43:                super (stack);
44:            }
45:
46:            public boolean start(Writer writer) {
47:                Map context = stack.getContext();
48:                Boolean ifResult = (Boolean) context.get(If.ANSWER);
49:
50:                context.remove(If.ANSWER);
51:
52:                return !((ifResult == null) || (ifResult.booleanValue()));
53:
54:            }
55:        }