| Interface | Description | 
|---|---|
| DivComponent | 
 Represents a contributed div UI component 
 | 
| HTMLComponent | 
 Represents a contributed UI component 
 | 
| ImgComponent | 
 Represents a contributed image UI component 
 | 
| InputButton | 
 Represents an input button UI component 
 | 
| InputCheckBox | 
 Represents an input checkbox UI component 
 | 
| InputEvent | 
 Support for input events from UI component
 NOTE: When also subscribing to  
TouchEvent, the ordering of events is not guaranteed | 
| InputRadioButton | 
 Represents an input radio button UI component 
 | 
| InputTextField | 
 Represents an input textfield UI component 
 | 
| LabelComponent | 
 Represents a label UI component 
 | 
| SelectDropDownList | 
 
 Represents a select list (drop down style) UI component 
 | 
| SelectEvent | |
| SelectList | 
 
 Represents a selection list UI component 
 | 
| TouchEvent | 
 Support for touch events from UI component
 NOTE: When also subscribing to  
InputEvent, the ordering of events is not guaranteed | 
| Translatable | 
 To have drop down list items translatable, the items must implement this interface. 
 | 
| Enum | Description | 
|---|---|
| InputEvent.EventType | 
 ON_CHANGE -  an event of this type is issued when an input widgets changes state. 
 | 
| SelectEvent.EventType | 
 ON_SELECT - an event of this type is issued when an element is selected. 
 | 
| TouchEvent.EventType | 
 ON_PRESSED -  an event of this type is issued on mouse/touchscreen pressed  
ON_RELEASE - an event of this type is issued when the mouse/touchscreen is released  | 
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