Cannot dynamically remove GUI elements and constraints

Although I’ve found its possible to dynamically add GUI elements (e.g. create and display a new view on button press), there doesn’t seem to be a way to dynamically delete GUI elements.

For example, I was trying to create a ‘show/hide’ button for a specific GUI element. I haven’t been able to figure out how implement this in the current version of Toga.

I was expecting that deleting a Toga GUI element using del my_element would remove that element and all constraints related to it, but this doesn’t seem to be the case.

Is there another way to achieve this functionality?

[samschott]

@freakboy3742, I was thinking of working on this but wanted to check first what a good API would look like. At the moment, there is only the Widget.add(*children) method and I am thinking of adding the following:

• remove(*children) removes given children from the widget.
• insert(index, child) inserts the given child at the index.

One could additionally or alternatively also provide:

• insert_before(child, new_child) inserts new_child before child.
• insert_after(child, new_child) inserts new_child before child.
• replace(child, new_child) replaces child with new_child.
• remove(index) removed child at index.

Personally, I am in favour of keeping it simple and just having the first two methods.

[obulat]

This issue has been solved in #814