[FIX] web_editor: Fieldtexthtml wait until iframe loaded to save

In the case where:
- you are too fast editing a mass mailing, trigger an onchange (e.g. mailing_model) and then save
You can use the edit/save shortcuts to make yourself believe you are Flash Gordon
- your internet is too slow (Down: 4Mb/s, Up: 500kb/s, Latency: 20ms)

Before ths commit, the onchange will return *before* the field (the iframe actually) is loaded.
This onchange contains a signal *in* the body_html of the field to allow communication with the iframe.
If you save before the iframe is loaded, this body_html keyword will be saved.

After this commit we deactivate the save button until the iframe is loaded.
We could have gone for a python user error on the value of the body_html too.
But it would have added a supplementary click and potential reloading

OPW 783616

0 files changed, 0 insertions, 0 deletions