Multiple Select List
Use the Multiple Select List part to add a control that allows the user to select one or more items from a displayed list of choices. You can define the number of items that the user can select. The HTML Multiple Select List part generates the HTML element select with the multiple attribute. Items within the list are represented by option elements.
To add a Multiple Select List part, select the Web Form Parts Category ( 
), then the Multiple Select List part ( 
). You can also add the part using the Add Part dialog and specifying the class name, AbtHtmlMultipleSelectList.
), then the Multiple Select List part ( ). You can also add the part using the Add Part dialog and specifying the class name, AbtHtmlMultipleSelectList. Multiple Select List Properties
The Multiple Select List part has the following properties:
•
attributeName
Use the attributeName property to specify which attribute of the objects in the collection should be displayed in the part.
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.
items
Use the items to specify the initial items you want displayed by the part when it appears.
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.
selectedItems
Use the selectedItems property to specify the items that appear selected in a multiple selection part when the part is rendered in a Web browser.
selectionIndices
Use the selectionIndices property to specify the indices of the items you want initially selected when the Multiple Select List part first appears.
visibleItemCount
Use the visibleItemCount property to specify the number of items you want to be visible in the part at any one time. This property determines the height of the list on the page.
Last modified date: 06/24/2018