[IMP] hr_contract: Sync employee and contract calendars mismatch

Purpose
=======

An employee and its current contract should have the same
calendar. Currently, if the contract's calendar is changed,
the employee's calendar is not changed.
In the same way, if a contract is created directly in `open`
state, the employee's calendar is not changed.
Finally, the calendar synchronization when the employee
contract is changed is only done in payroll, for no reason.

Specification
=============

Fix the three issues described above.

If the employee's calendar is nonetheless manually changed, a warning
should be displayed if there is a mismatch between both calendars.

1 files changed, 18 insertions, 0 deletions

diff --git a/addons/hr_contract/static/src/css/calendar_mismatch.scss b/addons/hr_contract/static/src/css/calendar_mismatch.scss
new file mode 100644
index 00000000000..f2570454198
--- /dev/null
+++ b/addons/hr_contract/static/src/css/calendar_mismatch.scss
@@ -0,0 +1,18 @@
+.o_form_view {
+    .o_calendar_warning {
+        cursor: help;
+    }
+
+    .o_calendar_warning_tooltip {
+        position: absolute;
+        opacity: 0;
+        visibility: hidden;
+    }
+
+    .o_calendar_warning:hover + .o_calendar_warning_tooltip {
+        position: relative;
+        visibility: visible;
+        opacity: 1;
+        transition: visibility 0s, opacity 0.5s linear;
+    }
+}