Do not automatically evaluate interact cells in notebook

[kcrisman]

Current behavior is that @interact cells automatically evaluate upon opening a worksheet. This can cause problems if (for instance) the cell depends on other cells which are not automatically evaluated, and also can take a long time if there are lots of them.

Since other cells do not auto-evaluate, and since this functionality still is easily available by putting #auto in the cell, this ticket calls for the current behavior to be changed.

Component: notebook

Issue created by migration from https://trac.sagemath.org/ticket/4363

[jasongrout]

comment:1

I second that this should be changed.

[mwhansen]

comment:2

I've also added this as a test case to the notebook test suite.

[williamstein]

comment:3

I think to solve this trac ticket, it is necessary that:

1. Output of interact cells should be completely empty when a worksheet is open.

2. @interact needs to work with #auto (or %auto?) because I have a project with a student that involves making a bunch of interacts that are all %hideall'd, so one sees only the controls.

[williamstein]

comment:4

Just to emphasize, the patch above mysteriously doesn't work with #auto...

[mwhansen]

Attachment: trac_4363.patch.gz

[mwhansen]

comment:7

I've posted a patch which does not enqueue interact cells at startup and deletes their output so that users don't think that they're running.

I've also made a ticket to fix the auto-evaluation at #5020 . I think this is a separate issue, and I'm looking into it.

[sagetrac-mhampton]

comment:8

This seems to solve the problem, and the auto-launch problem of #4947. My setup seems to have some issues with #auto cells, so I can't test the compatibility of this patch with that, but that is addressed in other ways by #5020.

[sagetrac-mabshoff]

comment:9

Merged in Sage 3.3.alpha0