Prevent user from pasting text with carriage return and/or line feed
characters in field value edit control in the schematic symbol and symbol
library properties dialogs.
Make all objects derived from GRID_CELL_TEXT_BUTTON use validators
correctly.
Add validators to FIELDS_GRID_TABLE object for field values other than
the mandatory fields.
Create a validator to check that a string is a valid LIB_ID.
Fixes lp:1828214
https://bugs.launchpad.net/kicad/+bug/1828214
The folder button handler works will for footprint libraries but we
needed a specific class for the schematic libraries as well.
Fixes: lp:1818346
* https://bugs.launchpad.net/kicad/+bug/1818346
Don't beep when inserting character from focused grid cell (but
before editor is opened).
Handle reference validation separately from name validation and
separately from user field value validation. The old way of setting
the fieldId on the validator wasn't working because the validator
gets copied.
Run validation when leaving cell. Don't just check for empty
(particularly for fields that CAN be empty).
Fixes: lp:1782917
* https://bugs.launchpad.net/kicad/+bug/1782917
(cherry picked from commit 79e04de)
Jeff Young
Wayne Stambaugh
Seth Hillbrand
Baranovskiy Konstantin