Add default values

[afonsobspinto]

As per title, we need to ensure that the default are available for the library:

if the user does not specify a componentsMap ensure there is one available that uses the react-diagram default nodes and links.
if the user specify a type that does not exists in the components map, report the error in console but as a fallback use the default type for visualization.

[afonsobspinto]

from @zsinnema :
Create default widgets as a sort of a base widget to which we can provide the data and type of data we want to show as children and it generates the UI widget for us.

<MetaNodeWidget>
{ 'dataToShow': Types.TypeOfInput } 
</MetaNodeWidget>

TypeOfInput can be something like TextInput and we provide default looks + default functionality (like editing)

From a application perspective:

• We could still use the componentsMap to fully override the widget.
• Would it be possible to edit the looks and keep the default functionality? How?

[zsinnema]

@afonsobspinto I would look at the material ui library
also I think @vidhya-metacell can help you with this archtitecture

ad 1) yes and a new component type can "inherit" from an existing
ad 2) yes, think of "theming"