[IMP] web: Export grouped list view in xls file

PURPOSE
=======

Add the support of grouped exports.
Allow the user to export all records in one click from
the listview, without having to go through the export modal,
taking into account the domain, groupbys, and visible fields.

SPECIFICATION
=============

When exporting (whether it is from the modal or from the shortcut),
any groupby(s) set on the listview should be taken into account (all unfolded)
- UNLESS the export is import-compatible
- each subgroup header has an indentation compared to its parent
- the 'group headers' in the exported file should contain the
  same info (label, field aggregates) as it has in the listview.

New secondary button on the tree view with label 'EXPORT' (to be confirmed...)
- the export shortcut disregard the selected records, it exports all records
  according to the domain.
- the button is visible even if there is no selected records.
- essentially the export shortcut does the same thing as the following:
    - select all records
    - hit 'action' then 'export'
    - hit 'export'

Define a boolean attribute on <tree> to specify whether or not the export shortcut should be displayed

Task 2072910

2 files changed, 177 insertions, 0 deletions

diff --git a/addons/web/tests/__init__.py b/addons/web/tests/__init__.py
index 1ed329bafe1..b479a574e46 100644
--- a/addons/web/tests/__init__.py
+++ b/addons/web/tests/__init__.py
@@ -6,3 +6,4 @@ from . import test_js
 from . import test_menu
 from . import test_serving_base
 from . import test_click_everywhere
+from . import test_export
diff --git a/addons/web/tests/test_export.py b/addons/web/tests/test_export.py
new file mode 100644
index 00000000000..b0fed393e10
--- /dev/null
+++ b/addons/web/tests/test_export.py
@@ -0,0 +1,176 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from unittest.mock import patch
+import json
+from odoo import http
+from odoo.tests import common, new_test_user
+from odoo.addons.web.controllers.main import ExportXlsxWriter
+
+
+class TestExport(common.HttpCase):
+
+    def setUp(self):
+        super().setUp()
+
+        # Archive demo partners
+        self.env['res.users'].search([]).active = False
+        self.env['res.partner'].search([]).active = False
+        new_test_user(self.env, login='fef', password='pwd')
+        self.authenticate('fef', 'pwd')
+
+        self.env['res.partner'].create([{
+            'name': 'partner 1',
+            'comment': 'yop',
+            'website': 'yop.com',
+            'credit_limit': 0,
+        },{
+            'name': 'partner 2',
+            'comment': 'yop',
+            'website': 'blop.com',
+            'credit_limit': 3,
+        },{
+            'name': 'partner 3',
+            'comment': 'yop',
+            'website': 'blop.com',
+            'credit_limit': 1,
+        }, {
+            'name': 'partner 4',
+            'comment': 'blop',
+            'website': 'blop.com',
+            'credit_limit': 2,
+        }])
+
+        self.worksheet = {}  # mock worksheet
+
+        self.default_params = {
+            'domain': [],
+            'fields': [{
+                'label': "Partner name",
+                'name': 'name',
+            }, {
+                'label': "Comment",
+                'name': "comment",
+            }, {
+                'label': 'Website',
+                'name': 'website',
+            }],
+            'groupby': [],
+            'ids': False,
+            'import_compat': False,
+            'model': 'res.partner',
+        }
+
+    def mock_write(self, row, column, value, style=None):
+        self.worksheet[row, column] = value
+
+    def test_grouped_list_export(self):
+
+        with patch.object(ExportXlsxWriter, 'write', self.mock_write):
+            self.default_params['groupby'] = ['comment', 'website']
+            params = dict(self.default_params, **{
+                'groupby': ['comment', 'website'],
+                'fields': [*self.default_params['fields'], {'label': "Credit Limit", 'name': 'credit_limit'}]
+            })
+            self.url_open('/web/export/xlsx', data={
+                'data': json.dumps(params),
+                'token': 'dummy',
+                'csrf_token': http.WebRequest.csrf_token(self),
+            })
+
+        # Main header
+        self.assertEqual(self.worksheet[0, 0], "Partner name", "It should display the list header")
+        self.assertEqual(self.worksheet[0, 1], "Comment", "It should display the list header")
+        self.assertEqual(self.worksheet[0, 2], "Website", "It should display the list header")
+        self.assertEqual(self.worksheet[0, 3], "Credit Limit", "It should display the list header")
+
+        # Header: Group Comment=blop
+        self.assertEqual(self.worksheet[1, 0], "blop (1)", "It should display the group header")
+        self.assertEqual(self.worksheet[1, 3], 2, "It should display the aggregated value")
+
+        # Header: Group Comment=blop > Website=http://blop.com
+        self.assertEqual(self.worksheet[2, 0], "    http://blop.com (1)", "It should display the group header")
+        self.assertEqual(self.worksheet[2, 3], 2, "It should display the aggregated value")
+
+        # Data: Group Comment=blop > Website=http://blop.com
+        self.assertEqual(self.worksheet[3, 0], "partner 4")
+        self.assertEqual(self.worksheet[3, 1], "blop")
+        self.assertEqual(self.worksheet[3, 2], "http://blop.com")
+        self.assertEqual(self.worksheet[3, 3], 2)
+
+        # Header: Group Comment=yop
+        self.assertEqual(self.worksheet[4, 0], "yop (3)", "It should display the group header")
+        self.assertEqual(self.worksheet[4, 3], 4, "It should display the aggregated value")
+
+        # Header: Group Comment=yop > Website=http://blop.com
+        self.assertEqual(self.worksheet[5, 0], "    http://blop.com (2)", "It should display the group header")
+        self.assertEqual(self.worksheet[5, 3], 4, "It should display the aggregated value")
+
+        # Data: Group Comment=yop > Website=http://blop.com
+        self.assertEqual(self.worksheet[6, 0], "partner 2")
+        self.assertEqual(self.worksheet[6, 1], "yop")
+        self.assertEqual(self.worksheet[6, 2], "http://blop.com")
+        self.assertEqual(self.worksheet[6, 3], 3)
+
+        self.assertEqual(self.worksheet[7, 0], "partner 3")
+        self.assertEqual(self.worksheet[7, 1], "yop")
+        self.assertEqual(self.worksheet[7, 2], "http://blop.com")
+        self.assertEqual(self.worksheet[7, 3], 1)
+
+        # Header: Group Comment=yop > Website=http://yop.com
+        self.assertEqual(self.worksheet[8, 0], "    http://yop.com (1)", "It should display the group header")
+        self.assertEqual(self.worksheet[8, 3], '', "It should not have any aggregated value")
+
+        # Data: Group Comment=yop > Website=http://yop.com
+        self.assertEqual(self.worksheet[9, 0], "partner 1")
+        self.assertEqual(self.worksheet[9, 1], "yop")
+        self.assertEqual(self.worksheet[9, 2], "http://yop.com")
+        self.assertEqual(self.worksheet[9, 3], 0)
+
+        # Header: Group Comment=False
+        self.assertEqual(self.worksheet[10, 0], "Undefined (1)", "It should display the group header")
+        self.assertEqual(self.worksheet[10, 3], '', "It should not have any aggregated value")
+
+        # Header: Group Comment=False > Website=False
+        self.assertEqual(self.worksheet[11, 0], "    Undefined (1)", "It should display the group header")
+        self.assertEqual(self.worksheet[11, 3], '', "It should not have any aggregated value")
+
+        # Data: Group Comment=False > Website=False
+        self.assertEqual(self.worksheet[12, 0], "fef (base.group_user)")
+        self.assertEqual(self.worksheet[12, 1], "")
+        self.assertEqual(self.worksheet[12, 2], "")
+        self.assertEqual(self.worksheet[12, 3], 0)
+
+    def test_list_export(self):
+
+        with patch.object(ExportXlsxWriter, 'write', self.mock_write):
+            self.url_open('/web/export/xlsx', data={
+                'data': json.dumps(self.default_params),
+                'token': 'dummy',
+                'csrf_token': http.WebRequest.csrf_token(self),
+            })
+
+        # Main header
+        self.assertEqual(self.worksheet[0, 0], "Partner name", "It should display the list header")
+        self.assertEqual(self.worksheet[0, 1], "Comment", "It should display the list header")
+        self.assertEqual(self.worksheet[0, 2], "Website", "It should display the list header")
+
+        self.assertEqual(self.worksheet[1, 0], "fef (base.group_user)")
+        self.assertEqual(self.worksheet[1, 1], "")
+        self.assertEqual(self.worksheet[1, 2], "")
+
+        self.assertEqual(self.worksheet[2, 0], "partner 1")
+        self.assertEqual(self.worksheet[2, 1], "yop")
+        self.assertEqual(self.worksheet[2, 2], "http://yop.com")
+
+        self.assertEqual(self.worksheet[3, 0], "partner 2")
+        self.assertEqual(self.worksheet[3, 1], "yop")
+        self.assertEqual(self.worksheet[3, 2], "http://blop.com")
+
+        self.assertEqual(self.worksheet[4, 0], "partner 3")
+        self.assertEqual(self.worksheet[4, 1], "yop")
+        self.assertEqual(self.worksheet[4, 2], "http://blop.com")
+
+        self.assertEqual(self.worksheet[5, 0], "partner 4")
+        self.assertEqual(self.worksheet[5, 1], "blop")
+        self.assertEqual(self.worksheet[5, 2], "http://blop.com")