display_choice_selector()

---

This function displays a choice selector component.

The choice selector component provides a selection screen and is used when the user needs to select an item among several options. The component can be used for example to select which object to pick or choose the desired room for the robot to navigate to.

For the examples below, a title on the top prompts the user to pick from two images below it: a bottle and a cup. The white theme can be applied as well as a custom style.

Reference

Explore more about this component here

Arguments

Arguments	Type	Default Value	Description
data	list		list/array of objects to be displayed(mandatory)
max_items_shown	int	None	maximum amount of items shown on the screen
title	string		Title of the modal (mandatory)
title_size	enum	UI_TITLE_SIZE.MEDIUM	Size of the title
scroll_arrow_buttom_text	str	None	text for bottom scrolling arrows
scroll_arrow_upper_text	str	None	text for top scrolling arrows
show_back_button	bool	False	Show a button to go back
back_button_text	string	“Back”	Text of the back button
button_size	int	1	Button size (1 = SMALL, 2 = MEDIUM, 3 = LARGE)
languages	list	None	List of languages to be displayed on the screen (optional)
chosen_language	str	None	If list given, string representing chosen language
theme	enum	UI_THEME_TYPE.DARK	Enum to define the theme of the screen, check UI_THEME_TYPE
custom_style	dict	None	Dictionary containing custom styles for the modal (optional)
wait	bool	True	Bool indicating to wait for user response (optional)
callback	callable	None	Callable function to handle the response (optional)

See the complete list of enumerations.

Return

Dictionary that contains the action performed by the user. For a button click, contains the keys ‘selected_option’ and ‘action’.

Example:

{'selected_option': {'id': 2, 'name': 'Gary'}, 'action': 'item_selected', 'app_id': 'APP_ID'}

Exceptions

• RayaUIMissingValue

• RayaNeedCallback

• RayaWrongArgument

See the complete list of ui exceptions and the complete list of general exceptions.

Callback Arguments

callback

Argument	Type	Description
data	dict	Dict containing the result of the action

Example

...

class RayaApplication(RayaApplicationBase):

    async def setup(self):
        self.UI = await self.enable_controller('ui')
        ....

    async def loop(self):
     ....
        data = [{
               'id': 1,
               'name': 'Martin'
           }, {
               'id': 2,
               'name': 'Gary'
           }, {
               'id': 3,
               'name': 'Nitsan'
           }
        ]
        response = await self.UI.display_choice_selector(
               title='What is my name?',
               show_back_button=False,
               data=data
        )
        if response['selected_option']['id'] == 2:
           subtitle = 'That is correct! Want to close the app?'
           modal_type = MODAL_TYPE.SUCCESS
        else:
           subtitle = 'That\'s wrong!  Want to close the app?'
           modal_type = MODAL_TYPE.ERROR

        self.log.info(response)
      ...

    async def finish(self):
      ...

...
'''
This is show when the 'Gary' button is selected.:
    {'selected_option': {'id': 2, 'name': 'Gary'}, 'action': 'item_selected', 'app_id': 'APP_ID'}
'''

response = await self.UI.display_modal(
       title='Modal',
       subtitle=subtitle,
       modal_type=modal_type
   )

if response['action'] == 'confirmed':
   self.finish_app()