| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
| <!-- $Id$ --> |
| <html> |
| <head> |
| <title>Conditional</title> |
| <link rel="stylesheet" type="text/css" href="Tapestry.css" title="style"> |
| </head> |
| |
| <body> |
| <table border="0" cellpadding="0" cellspacing="0" width="100%"> |
| <tr> |
| <td align="left"><A href="Checkbox.html"><IMG alt=Checkbox src="common-images/prev.png"></a></td> |
| <td align="middle"><A href="index.html"><IMG alt="Component Index" src="common-images/home.png" ></a></td> |
| <td align="right"><A href="DatePicker.html"><IMG alt="DatePicker" src="common-images/next.png"></a></td> |
| <tr> |
| <tr> |
| <td colspan="3"><hr></td> |
| </tr> |
| <tr> |
| <td colspan="3"> |
| <table border="0" cellpadding="4" cellspacing="4" width="100%"> |
| |
| <tr valign="top"> |
| <td> |
| <table> |
| <tr> |
| <td><font size="+2"><b>Conditional</b></font></td> |
| </tr> |
| <tr> |
| <td> |
| <A href="../api/org/apache/tapestry/components/Conditional.html">org.apache.tapestry.components.Conditional</a> |
| </td> |
| </tr> |
| </table> |
| </td> |
| <td> |
| <table align="right" valign="middle" bgcolor="#c0c0c0" cellpadding="8"> |
| <tr> |
| <td>Non Visual Component</td> |
| </tr> |
| </table> |
| </td> |
| </tr> |
| |
| <tr valign="center"> |
| <td colspan="2"> </td> |
| </tr> |
| |
| <tr> |
| <td colspan="2"> |
| <b>Description</b> |
| <br> |
| Makes part of an HTML template conditional. The body of the Conditional |
| component is only rendered if a specified condition is met. |
| </td> |
| </tr> |
| |
| <tr> |
| <td colspan="2"> |
| <b>See Also</b> |
| <br> |
| <A href="Foreach.html">Foreach</a>, |
| <A href="Insert.html">Insert</a> |
| </td> |
| </tr> |
| |
| <tr> |
| <td colspan="2"> |
| <b>Parameters</b> |
| <br> |
| <table border="1" cellpadding="4" cellspacing="4" class="parameters"> |
| <tr> |
| <th>Name</th> |
| <th>Type</th> |
| <th>Direction</th> |
| <th>Required</th> |
| <th>Default</th> |
| <th>Description</th> |
| </tr> |
| <tr> |
| <td>condition</td> |
| <td>boolean</td> |
| <td>in</td> |
| <td>yes</td> |
| <td>false</td> |
| <td>The condition to be met. If this value is true, then the wrapped |
| elements will be rendered. |
| </td> |
| </tr> |
| <tr> |
| <td>invert</td> |
| <td>boolean</td> |
| <td>in</td> |
| <td>no</td> |
| <td>false</td> |
| <td>If true, then the condition is inverted. This is useful for |
| simulating an else clause. |
| <p> |
| With Tapestry 2.2 it is easier to specify "!" operator in the condition's |
| ONGL expression. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td>element</td> |
| <td>String</td> |
| <td>in</td> |
| <td>no</td> |
| <td> </td> |
| <td>If specified and condition is satisfied, then the component acts like |
| an <A href="Any.html">Any</A>, emitting an open and close tag. |
| Informal parameters are applied to the tag. If no element is |
| specified, informal parameters are ignored.</td> |
| </tr> |
| </table> |
| <P> |
| Body: <STRONG>rendered</STRONG><BR> |
| Informal parameters: <STRONG>allowed</STRONG><br> |
| Reserved parameters: <EM>none</EM> |
| </P> |
| </td> |
| </tr> |
| |
| <tr> |
| <td colspan="2"> |
| <b>Examples</b> |
| <p> |
| The Conditional component in this example is used to display whether the |
| person is a manager and if they are a manager whether they have any staff. |
| <p> |
| |
| <table class="examples" cellpadding="8"> |
| <tr> |
| <td> |
| John Smith is a Manager with <font color="red"><b>no</b></font> staff. |
| <td></td> |
| </tr> |
| </table> |
| |
| <pre> |
| <span jwcid="@<a href="Insert.html">Insert</a>" value="ognl:fullName"/> |
| <span jwcid="<span class="jwcid">@<a href="Conditional.html">Conditional</a></span>" condition="ognl:manager"> is a Manager |
| <span jwcid="<span class="jwcid">@<a href="Conditional.html">Conditional</a></span>" condition="ognl:! staffList.empty"> with staff.</span> |
| <span jwcid="<span class="jwcid">@<a href="Conditional.html">Conditional</a></span>" condition="ognl:staffList.empty"> |
| with <font color="red"><b>no</b></font> staff.</span> |
| </span> |
| <span jwcid="@<a href="Conditional.html">Conditional</a>" condition="ognl:! manager"> is not a Manager.</span> |
| |
| |
| <property-specification name="fullName" type="java.lang.String"/><br><property-specification name="manager" type="boolean"/><br><property-specification name="staffList" type="java.util.List"/><br> |
| |
| public abstract class EnquiryPage extends BasePage { |
| |
| public abstract String getFullName(); |
| public abstract void setFullName(String value); |
| |
| public abstract boolean isManager(); |
| public abstract void setManager(boolean value); |
| |
| public abstract List getStaffList(); |
| public abstract void setStaffList(List value); |
| } |
| </pre> |
| </td> |
| </tr></table> |
| </td></tr> |
| <tr> |
| <td colspan="3"><hr></td> |
| </tr> |
| <tr> |
| <td align="left"><A href="Checkbox.html"><IMG alt=Checkbox src="common-images/prev.png"></a></td> |
| <td align="middle"><A href="index.html"><IMG alt="Component Index" src="common-images/home.png" ></a></td> |
| <td align="right"><A href="DatePicker.html"><IMG alt="DatePicker" src="common-images/next.png"></a></td> |
| </tr> |
| </table> |
| |
| </body> |
| </html> |
