SimpleRene Integration

[Nyan11]

SimpleRene is a meta-description tool used to describe object in Pharo.

https://github.com/pharo-contributions/SimpleRene

The idea behind the SimpleRene integration is to describe Bloc and Toplo using SimpleRene and compute the equivalent PyramidProperty.

Example

For example:

• A BlElement has a BlBackground
• A BlBackground is eitheir a BlTransparentBackground or a BlPaintBackground.
• A BlPaintBackground has a Color
• A Color has 3 Integers (red, green and blue)

With all of this informations, we can create 2 PyramidProperties for a BlElement:

• One is a choice between the BlTransparentBackground and the BlPaintBackground.
• One is a color selector for BlPaintBackground (3 number inputs).

This 2 properties can be used to create the Pyramid UI (one selection between 2 values and one input with 3 integers)

Pros and Cons

The pros

• We remove one dependance from Pyramid (at least for the properties, not for the display in the middle)
• We remove a lot of code from Pyramid
• We make Pyramid more generic and more extensible
  • Anyone can add a meta-description to Bloc Object and this meta-description could be interpreted by Pyramid.
• We use a meta-description tool that can be used for other things and therefor we make it more robust.
  • Serialization: replace Stash pragmas with SimpleRene descriptions.
  • Domain Object: automaticaly put domain object insides Bloc UI using Pyramid

The cons

• We have a lot of things to change
• We have to meta-describe all of Bloc and Toplo
• Will SimpleRene be easy to use ?

[Nyan11]

There is an example here: #189
Some code is missing (the simple rene description of the font size) but it was working.