[IMP] web: float_factor and float_toggle widgets

This commit provides new js widgets for list, kanban and form
views on float field.

1/ 'float_factor' displays the normal float field, but takes a
conversion factor as option. The displays value is the normal
one multiplied by the factor.

You can use the widget like
<field name="my_float_field" widget="float_factor"
option="{'factor': 2}"/>

2/ 'float_toggle' displays a button (in edit mode) looping on a
range of given value at each click. A conversion factor is optional
(default will be 1) to display a converted value, but sent to
non converted one to the server.

You can use the widget like
<field name="my_float" widget="float_toggle"
option="{'range': [0, 0.5, 1], 'factor': 2}"/>

'range' and 'factor' are put in the options.
In simple read mode, the widget display the value as a traditionnal
text (like a normal char field).

This commit provides tests and documentation for those 2 widgets.

Task #39079

1 files changed, 29 insertions, 0 deletions

diff --git a/addons/web/static/src/js/fields/field_utils.js b/addons/web/static/src/js/fields/field_utils.js
index 989f99c5fef..0e9dc063834 100644
--- a/addons/web/static/src/js/fields/field_utils.js
+++ b/addons/web/static/src/js/fields/field_utils.js
@@ -173,6 +173,21 @@ function formatFloat(value, field, options) {
     return formatted.join(l10n.decimal_point);
 }
 
+
+/**
+ * Returns a string representing a float value, from a float converted with a
+ * factor.
+ *
+ * @param {number} value
+ * @param {number} [options.factor]
+ *          Conversion factor, default value is 1.0
+ * @returns {string}
+ */
+function formatFloatFactor(value, field, options) {
+    var factor = options.factor || 1;
+    return formatFloat(value * factor, field, options);
+}
+
 /**
  * Returns a string representing a time value, from a float.  The idea is that
  * we sometimes want to display something like 1:45 instead of 1.75, or 0:15
@@ -528,6 +543,18 @@ function parseMonetary(value, field, options) {
     return parseFloat(values[0] === currency.symbol ? values[1] : values[0]);
 }
 
+/**
+ * Parse a String containing float and unconvert it with a conversion factor
+ *
+ * @param {number} [options.factor]
+ *          Conversion factor, default value is 1.0
+ */
+function parseFloatFactor(value, field, options) {
+    var parsed = parseFloat(value);
+    var factor = options.factor || 1.0;
+    return parsed / factor;
+}
+
 function parseFloatTime(value) {
     var factor = 1;
     if (value[0] === '-') {
@@ -596,6 +623,7 @@ return {
         date: formatDate,
         datetime: formatDateTime,
         float: formatFloat,
+        float_factor: formatFloatFactor,
         float_time: formatFloatTime,
         html: _.identity, // todo
         integer: formatInteger,
@@ -615,6 +643,7 @@ return {
         date: parseDate, // todo
         datetime: parseDateTime, // todo
         float: parseFloat,
+        float_factor: parseFloatFactor,
         float_time: parseFloatTime,
         html: _.identity, // todo
         integer: parseInteger,