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UI Component Reference: Map Picker

A map picker can be used as a form input component, to choose a single ‘latitude, longitude’ value; or as a simple location chooser; other components can then listen for a UI event via the bind tag or a dependency arrow. The map can be populated with map markers, each of which is a domain item loaded via the domain tag or by linking the map to a domain class with a Dependency arrow. In this case, the UI selection event will be a domain object selected event, much like a table or listbox.

Which wireframe component?

Depending which modeling tool you’re using, add the following component from the palette into the wireframe:

Tool Wireframe component(s)
Enterprise Architect MapPicker
Magic Draw MapPicker


Domain item chooser The component can be used as an item selector, to choose a domain object. Can be used in a form, or simply to generate an ‘item chosen’ event.
Domain data The component can be linked to a domain class, via the domain tag or a dependency arrow. The component will show data loaded from the domain class’ relevant API endpoint.
Reactive The component can listen to UI events triggered by another component, via the bind tag or a dependency arrow.
Bind target Other components can listen and react to this component’s’ UI events, via their bind tag or a dependency arrow pointing to this component.

Tagged values

Tag Allowed values Notes
bind   Makes this UI Element listen to another UI element for events (e.g. row item selected), via a Redux UI global state selector.

This tag is the same as connecting the elements with a Dependency arrow. However, you can use this tag, for example, if the other UI element is on a different wireframe.

The following component types can be ‘state-bound’ (i.e. listen to another UI Element via the bind tag or dependency arrow):

Button, Checkbox, ComboBox, Link, ListBox, MapPicker, MediaPlayer, PasswordField, RangeInput, Table, TextArea, TextField
domain   Links a component to a domain class, and optionally an attribute.

Depending on the component, it will then use the domain data in some way, e.g. to populate a table or listbox with domain data for selection.

The linked data will be loaded via the domain class’ matching REST API endpoint, with loading state managed in the UI via a Redux domain selector.

Please note: This tag is the same as connecting the element to a domain class with a Dependency arrow.
display domain   Specifies which domain class attribute to display. For cases where the display attribute/relationship is different from the ‘data’ domain attribute/relationship.
form domain   For Domain Chooser UI Elements (listbox, ComboBox), where the form attribute/relationship is different from the ‘data’ domain attribute/relationship, as two domain classes are involved.
filter   Define a single-line predicate (valid TypeScript expression that evaluates to a boolean) to filter a UI list.
css class Any CSS class name, without a preceding . Adds the specified CSS class (or classes) to the UI element. If you define a class in a custom CSS file, you can apply it to a component using this tag. CodeBot will also recognise any ‘standard’ Bootstrap CSS classes such as h1, h2 etc; their defined behaviour will be carried over to any future UI platforms that CodeBot generates.
variant css class    
cell css class    
Must be one of: primary, secondary, success, danger, warning, info, light, dark, link Changes a UI Element’s appearance. The allowed values are based on Bootstrap’s variant CSS classes.

For React Labels, this will turn the label into an “Alert” component, with a background and text colour matching the variant. Useful for callouts, notes and static warnings (“Clicking OK will delete all your data”).
single selection
true or false DEFAULT: true if in a form, otherwise false. If true, this is a map picker where you select a single location.
popup message   An optional message to display in a popup when you click the map selection marker.
origin latitude,longitude string with no spaces, e.g. 25.07037114164013,-77.39571860092475 DEFAULT: 51.505,-0.09 (Central London) The map’s initial location, if no other location is given (e.g. data-linked, or reacting to the value in a bound component).
zoom 1 to 12 DEFAULT: 12 The initial zoom level.
width any valid CSS size e.g. 50%, 150px Leaflet needs the component size to be set when it’s created, so width and height tags are provided to enable that.
height any valid CSS size  
marker location attribute
 marker location attr
domain attribute name, e.g. store location DEFAULT: location The map can be linked to a domain class to display multiple map markers. This tag defines the attribute on the linked domain class containing the latitude,longitude string value. For each domain object, the marker will be placed at this location.
tile layer A URL that follows Leaflet’s tile URL format DEFAULT: An openstreetmap layer In addition to ‘everyday’ street maps, Leaflet can be extended with third-party tile layers, e.g. satellite or ESRI topological views. This tag allows you to specify the main tile layer for the map.To choose a tile layer, we recommend this resource.
tile attribution DEFAULT: openstreetmap attribution Attribution text that accompanies the tile layer. This text appears at the bottom-right of the map.
scroll wheel zoom true or false Whether the map can be zoomed in or out with the mouse scroll-wheel.

Tagged values for all model elements including UI component types

Also see