Hidden Input

Use the Hidden Input part to to include hidden input fields in a form. Hidden input fields are not displayed to the user, but are submitted to the server along with other form data. The Hidden Input part generates the HTML element input with the type attribute set to hidden.

To add a Hidden Input part, select the Web Form Parts Category ( ), then the Hidden Input part ( ). You can also add the part using the Add Part dialog and specifying the class name, AbtHtmlHiddenInput.

Hidden Input Properties

The Hidden Input part has the following properties:

•

converter

•	eventHandlers

•	extraAttributes

•

object

•

partName

•

string

 

converter

Use the converter property to specify the converter to use for the part. A converter is an object that manages the conversion of other objects to and from their display format for certain visual parts, such as a Text part.

eventHandlers

Use the eventHandlers property to define any event handlers for this part. Event handlers provide the ability to detect and react to events that occur while an HtmlPage is loaded in a Web browser. An example of an event handler is mouse over, where you can specify when the mouse moves over an HTML element, something happens, usually a JavaScript is executed..

extraAttributes

Use the extraAttributes property to specify any additional HTML attributes that you want included in the HTML tagging generated by the part. You can use this property to include HTML attributes that are not directly supported by VA Smalltalk.

object

Use the object property to specify the contents of the hidden input field.

partName

In the Part name field, type the name you want to use to describe the part. For non-visual parts, this text appears under the icon for the part on the free-form surface.

The name of the part can consist of alphanumeric characters, and must be unique from all other parts on the layout surface.

This field is optional. If you do not specify a part name, VA Smalltalk generates a unique name based on the class name of the part.

string

Use the string property to specify a script. Use this property when your script is small and you want it generated in line with the HTML.