[IMP] web: format hours as hh:mm in the Graph view

[sami-odoo]

Before this Commit:
The Graph view was not adaptable to the use of widgets, leading to issues with
the representation of time. Specifically, hours were shown as float values in
the graph view. For example, 5 hours and 30 minutes were displayed as 5.50
instead of the more intuitive hh:mm format. Although widgets like "float_time"
or "timesheet_uom" were available to format these values, they were ineffective
in the Graph view due to the architecture parser's limitations. This caused
confusion for users trying to interpret the time accurately.

After this Commit:
The Graph view is now adaptable to the use of widgets. This means that when a
widget is applied to format a field's value, the value will be displayed in the
specified format. For example, hours can now be shown in the hh:mm format
instead of as a float. This improvement also ensures that the formatted values
are reflected in the Y-axis (Ticks/Intervals) of the Graph view, enhancing the
user's ability to interpret the data accurately.

Task-3861721

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[robodoo]

.

[aab-odoo]

You can't hardcode a list of fields in the framework. We should consider using the widget="..." feature as we do in a lot of other view types. For instance

<graph>
    <field name="unit_amount" type="measure" widget="float_time"/>
</graph>

And use the specified widget to format the value in the tooltip

[aab-odoo]

Note: the formatter could also be used to format values displayed on the Y axis of the graph

[sami-odoo]

Hello @aab-odoo sir,

Thank you for the suggestion. Previously, we used float_time or timesheet_uom, but no changes were reflected because the graph arch parser did not support widgets. However, this PR makes it adaptable to widgets, so now changes are easily reflected.

But there is a case:
There is a view, e.g., id="view_project_task_graph". If we do not have hr_timesheet installed, then the measures for which we have to display values in hh:mm are displayed in just float type. However, once we install hr_timesheet, it inherits the above view and modifies it by adding new fields as measures with specific widgets. So then the values are displayed in hh:mm. What should be done in that case? Should I explicitly add fields as measures in the parent view with widget="float_time" or "timesheet_uom" or use some other approach?

[aab-odoo]

Hello @sami-odoo

You should set widget="float_time" in the parent arch, and it will be overridden (with xpath) when hr_timesheet is installed, which is fine.

[Polymorphe57]

so you will have to modify the xpaths in project_task_view_graph in order to get widget="timesheet_uom" instead of widget="float_time"