Custom or Modified Control HTML

[JefferyD]

It seems like the widget controls and containers have a sort of HTML template that is then configured by the various control properties. A very powerful feature I'd like to see is the ability to create modified or even completely custom HTML controls where either existing or new properties could be mapped to it.

For modifying controls, this would allow small or simple changes when an unsupported use case for a control is needed. For example, adding a 2nd level header row for a table or creating a dropdown list but with a title similar to a label.

For new custom controls, this would allow a more modular approach to widget design as well as provide a way for widget specific tools to be used with custom HTML. For example, creating a control that shows a label but becomes a dropdown list when clicked could be more easily implemented in multiple places while also allowing a controller event to be directly linked to it.

[SteveCap]

There is task 9557 to discuss this feature.