From 4f8860e5038711c0da5b26584c4b72663908ddbc Mon Sep 17 00:00:00 2001
From: Aaron Bohy <aab@odoo.com>
Date: Wed, 29 Apr 2020 07:21:37 +0000
Subject: [IMP] web: add RemainingDays field widget

This widget can be used on date and datetime fields. In readonly,
it displays the delta (in days) between the value of the field and
today. In edit, it behaves like a regular date(time) widget.

Part of task 2195254
---
 addons/web/static/src/js/fields/basic_fields.js | 44 +++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'addons/web/static/src/js/fields/basic_fields.js')

diff --git a/addons/web/static/src/js/fields/basic_fields.js b/addons/web/static/src/js/fields/basic_fields.js
index 721d6618e83..4c5bef2c366 100644
--- a/addons/web/static/src/js/fields/basic_fields.js
+++ b/addons/web/static/src/js/fields/basic_fields.js
@@ -887,6 +887,49 @@ var FieldDateTime = FieldDate.extend({
     },
 });
 
+const RemainingDays = FieldDate.extend({
+    description: _lt("Remaining Days"),
+    supportedFieldTypes: ['date', 'datetime'],
+
+    //--------------------------------------------------------------------------
+    // Private
+    //--------------------------------------------------------------------------
+
+    /**
+     * Displays the delta (in days) between the value of the field and today. If
+     * the delta is larger than 99 days, displays the date as usual (without
+     * time).
+     *
+     * @override
+     */
+    _renderReadonly() {
+        if (this.value === false) {
+            this.$el.removeClass('text-bf text-danger text-warning');
+            return;
+        }
+        // compare the value (in the user timezone) with now (also in the user
+        // timezone), to get a meaningful delta for the user
+        const nowUTC = moment().utc();
+        const nowUserTZ = nowUTC.clone().add(session.getTZOffset(nowUTC), 'minutes');
+        const valueUserTZ = this.value.clone().add(session.getTZOffset(this.value), 'minutes');
+        const diffDays = valueUserTZ.startOf('day').diff(nowUserTZ.startOf('day'), 'days');
+        let text;
+        if (Math.abs(diffDays) > 99) {
+            text = this._formatValue(this.value, 'date');
+        } else if (diffDays === 0) {
+            text = _t("Today");
+        } else if (diffDays < 0) {
+            text = diffDays === -1 ? _t("Yesterday") : _t(`${-diffDays} days ago`);
+        } else {
+            text = diffDays === 1 ? _t("Tomorrow") : _t(`In ${diffDays} days`);
+        }
+        this.$el.text(text).attr('title', this._formatValue(this.value, 'date'));
+        this.$el.toggleClass('text-bf', diffDays <= 0);
+        this.$el.toggleClass('text-danger', diffDays < 0);
+        this.$el.toggleClass('text-warning', diffDays === 0);
+    },
+});
+
 var FieldMonetary = NumericField.extend({
     description: _lt("Monetary"),
     className: 'o_field_monetary o_field_number',
@@ -3437,6 +3480,7 @@ return {
     FieldDate: FieldDate,
     FieldDateTime: FieldDateTime,
     FieldDateRange: FieldDateRange,
+    RemainingDays: RemainingDays,
     FieldDomain: FieldDomain,
     FieldFloat: FieldFloat,
     FieldFloatTime: FieldFloatTime,
-- 
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