[ADD] web_kanban_stage: Stage model and abstract logic

* Add Kanban-compatible stage model web.kanban.stage
* Add views, menu items, actions, and access controls needed to manage
web.kanban.stage records
* Add abstract model web.kanban.abstract that other models can inherit from to
gain Kanban stage functionality
* Add base Kanban view web_kanban_abstract_view_kanban, which can be
customized as needed for use with models that inherit from web.kanban.abstract
* Add model web.kanban.abstract.tester, which is needed for
web.kanban.abstract unit tests

web_kanban_stage/README.rst

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+.. image:: https://img.shields.io/badge/licence-lgpl--3-blue.svg
+   :target: http://www.gnu.org/licenses/LGPL-3.0-standalone.html
+   :alt: License: LGPL-3
+
+======================
+Kanban - Stage Support
+======================
+
+This module provides a stage model compatible with Kanban views and the 
+standard views needed to manage these stages. It also provides the 
+``web.kanban.abstract`` model, which can be inherited to add support for 
+Kanban views with stages to any other model. Lastly, it includes a base Kanban 
+view that can be extended as needed.
+
+Installation
+============
+
+To install this module, simply follow the standard install process.
+
+Configuration
+=============
+
+No configuration is needed or possible.
+
+Usage
+=====
+
+* Inherit from ``web.kanban.abstract`` to add Kanban stage functionality to 
+  the child model:
+
+  .. code-block:: python
+
+    class MyModel(models.Model):
+        _name = 'my.model'
+        _inherit = 'web.kanban.abstract'
+        
+* Extend the provided base Kanban view (``web_kanban_abstract_view_kanban``) 
+  as needed by the child model. The base view has four ``name`` attributes 
+  intended to provide convenient XPath access to different parts of the Kanban 
+  card. They are ``card_dropdown_menu``, ``card_header``, ``card_body``, and 
+  ``card_footer``:
+
+  .. code-block:: xml
+
+    <record id="my_model_view_kanban" model="ir.ui.view">
+        <field name="name">My Model - Kanban View</field>
+        <field name="model">my.model</field>
+        <field name="inherit_id" ref="web_kanban_stage.web_kanban_abstract_view_kanban"/>
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='card_header']">
+                <!-- Add header content here -->
+            </xpath>
+            <xpath expr="//div[@name='card_body']">
+                <!-- Add body content here -->
+            </xpath>
+        </field>
+    </record>
+
+* To manage stages, go to Settings > Technical > Kanban > Stages.
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: https://runbot.odoo-community.org/runbot/162/9.0
+
+Known Issues / Roadmap
+======================
+
+* The grouping logic used by ``web.kanban.abstract`` currently does not 
+  support additional domains and alternate sort orders
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/web/issues>`_. In 
+case of trouble, please check there if your issue has already been reported. 
+If you spotted it first, help us smash it by providing detailed and welcomed 
+feedback.
+
+Credits
+=======
+
+Images
+------
+
+* Odoo Community Association: 
+  `Icon <https://github.com/OCA/maintainer-tools/blob/master/template/module/static/description/icon.svg>`_.
+
+Contributors
+------------
+
+* Dave Lasley <dave@laslabs.com>
+* Oleg Bulkin <obulkin@laslabs.com>
+* Daniel Reis
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit http://odoo-community.org.

web_kanban_stage/__init__.py

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+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import models

web_kanban_stage/__openerp__.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+{
+    'name': 'Kanban - Stage Support',
+    'summary': 'Provides stage model and abstract logic for inheritance',
+    'version': '9.0.1.0.0',
+    'author': "LasLabs, Odoo Community Association (OCA)",
+    'category': 'Web',
+    'depends': [
+        'web_kanban',
+    ],
+    'website': 'https://laslabs.com',
+    'license': 'LGPL-3',
+    'data': [
+        'security/ir.model.access.csv',
+        'views/web_kanban_abstract.xml',
+        'views/web_kanban_stage.xml',
+    ],
+    'installable': True,
+    'application': False,
+}

web_kanban_stage/models/__init__.py

@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import web_kanban_abstract
+from . import web_kanban_stage

web_kanban_stage/models/web_kanban_abstract.py

@@ -0,0 +1,112 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from openerp import api, fields, models
+
+
+class WebKanbanAbstract(models.AbstractModel):
+    '''Inherit from this class to add support for Kanban stages to your model.
+    All public properties are preceded with kanban_ in order to isolate from
+    child models, with the exception of stage_id, which is a required field in
+    the Kanban widget and must be defined as such.'''
+
+    _name = 'web.kanban.abstract'
+    _order = 'kanban_priority desc, kanban_sequence'
+    _group_by_full = {
+        'stage_id': lambda s, *a, **k: s._read_group_stage_ids(*a, **k),
+    }
+
+    kanban_sequence = fields.Integer(
+        default=10,
+        index=True,
+        help='Order of record in relation to other records in the same Kanban'
+             ' stage and with the same priority',
+    )
+    kanban_priority = fields.Selection(
+        selection=[('0', 'Normal'), ('5', 'Medium'), ('10', 'High')],
+        index=True,
+        default='0',
+        help='The priority of the record (shown as stars in Kanban views)',
+    )
+    stage_id = fields.Many2one(
+        string='Kanban Stage',
+        comodel_name='web.kanban.stage',
+        track_visibility='onchange',
+        index=True,
+        copy=False,
+        help='The Kanban stage that this record is currently in',
+        default=lambda s: s._default_stage_id(),
+        domain=lambda s: [('res_model.model', '=', s._name)],
+    )
+    kanban_user_id = fields.Many2one(
+        string='Assigned To',
+        comodel_name='res.users',
+        index=True,
+        track_visibility='onchange',
+        help='User that the record is currently assigned to',
+    )
+    kanban_color = fields.Integer(
+        string='Color Index',
+        help='Color index to be used for the record\'s Kanban card',
+    )
+    kanban_legend_priority = fields.Text(
+        string='Priority Explanation',
+        related='stage_id.legend_priority',
+        help='Explanation text to help users understand how the priority/star'
+             ' mechanism applies to this record (depends on current stage)',
+    )
+    kanban_legend_blocked = fields.Text(
+        string='Special Handling Explanation',
+        related='stage_id.legend_blocked',
+        help='Explanation text to help users understand how the special'
+             ' handling status applies to this record (depends on current'
+             ' stage)',
+    )
+    kanban_legend_done = fields.Text(
+        string='Ready Explanation',
+        related='stage_id.legend_done',
+        help='Explanation text to help users understand how the ready'
+             ' status applies to this record (depends on current stage)',
+    )
+    kanban_legend_normal = fields.Text(
+        string='Normal Handling Explanation',
+        related='stage_id.legend_normal',
+        help='Explanation text to help users understand how the normal'
+             ' handling status applies to this record (depends on current'
+             ' stage)',
+    )
+    kanban_status = fields.Selection(
+        selection=[
+            ('normal', 'Normal Handling'),
+            ('done', 'Ready'),
+            ('blocked', 'Special Handling'),
+        ],
+        string='Kanban Status',
+        default='normal',
+        track_visibility='onchange',
+        required=True,
+        copy=False,
+        help='A record can have one of several Kanban statuses, which are used'
+             ' to indicate whether there are any special situations affecting'
+             ' it. The exact meaning of each status is allowed to vary based'
+             ' on the stage the record is in but they are roughly as follow:\n'
+             '* Normal Handling: Default status, no special situations\n'
+             '* Ready: Ready to transition to the next stage\n'
+             '* Special Handling: Blocked in some way (e.g. must be handled by'
+             ' a specific user)\n'
+    )
+
+    @api.model
+    def _default_stage_id(self):
+        return
+
+    @api.multi
+    def _read_group_stage_ids(
+        self, domain=None, read_group_order=None, access_rights_uid=None
+    ):
+        stage_model = self.env['web.kanban.stage'].sudo(access_rights_uid)
+        stages = stage_model.search([('res_model.model', '=', self._name)])
+        names = [(r.id, r.display_name) for r in stages]
+        fold = {r.id: r.fold for r in stages}
+        return names, fold

web_kanban_stage/models/web_kanban_stage.py

@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from openerp import api, fields, models
+
+
+class WebKanbanStage(models.Model):
+    _name = 'web.kanban.stage'
+    _description = 'Kanban Stage'
+    _order = 'res_model, sequence'
+
+    name = fields.Char(
+        string='Stage Name',
+        translate=True,
+        required=True,
+        help='Displayed as the header for this stage in Kanban views',
+    )
+    description = fields.Text(
+        translate=True,
+        help='Short description of the stage\'s meaning/purpose',
+    )
+    sequence = fields.Integer(
+        default=1,
+        required=True,
+        index=True,
+        help='Order of stage in relation to other stages available for the'
+             ' same model',
+    )
+    legend_priority = fields.Text(
+        string='Priority Explanation',
+        translate=True,
+        default='Mark a card as medium or high priority (one or two stars) to'
+                ' indicate that it should be escalated ahead of others with'
+                ' lower priority/star counts.',
+        help='Explanation text to help users understand how the priority/star'
+             ' mechanism applies to this stage',
+    )
+    legend_blocked = fields.Text(
+        string='Special Handling Explanation',
+        translate=True,
+        default='Give a card the special handling status to indicate that it'
+                ' requires handling by a special user or subset of users.',
+        help='Explanation text to help users understand how the special'
+             ' handling status applies to this stage',
+    )
+    legend_done = fields.Text(
+        string='Ready Explanation',
+        translate=True,
+        default='Mark a card as ready when it has been fully processed.',
+        help='Explanation text to help users understand how the ready status'
+             ' applies to this stage',
+    )
+    legend_normal = fields.Text(
+        string='Normal Handling Explanation',
+        translate=True,
+        default='This is the default status and indicates that a card can be'
+                ' processed by any user working this queue.',
+        help='Explanation text to help users understand how the normal'
+             ' handling status applies to this stage',
+    )
+    fold = fields.Boolean(
+        string='Collapse?',
+        help='Determines whether this stage will be collapsed down in Kanban'
+             ' views',
+    )
+    res_model = fields.Many2one(
+        string='Associated Model',
+        comodel_name='ir.model',
+        required=True,
+        index=True,
+        help='The model that this Kanban stage will be used for',
+        domain=[('transient', '=', False)],
+        default=lambda s: s._default_res_model(),
+    )
+
+    @api.model
+    def _default_res_model(self):
+        '''Useful when creating stages from a Kanban view for another model'''
+        action_id = self.env.context.get('params', {}).get('action')
+        action = self.env['ir.actions.act_window'].browse(action_id)
+        default_model = action.res_model
+        if default_model != self._name:
+            return self.env['ir.model'].search([('model', '=', default_model)])

web_kanban_stage/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_user,Kanban Stage - User Access,model_web_kanban_stage,base.group_user,1,0,0,0
+access_manager,Kanban Stage - Manager Access,model_web_kanban_stage,base.group_erp_manager,1,1,1,1

web_kanban_stage/tests/__init__.py

@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from . import test_web_kanban_abstract
+from . import test_web_kanban_stage

web_kanban_stage/tests/test_web_kanban_abstract.py

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from openerp import models
+from openerp.tests.common import TransactionCase
+
+
+class WebKanbanAbstractTester(models.Model):
+    _name = 'web.kanban.abstract.tester'
+    _inherit = 'web.kanban.abstract'
+
+
+class TestWebKanbanAbstract(TransactionCase):
+    def setUp(self):
+        super(TestWebKanbanAbstract, self).setUp()
+
+        WebKanbanAbstractTester._build_model(self.registry, self.cr)
+        self.test_model = self.env[WebKanbanAbstractTester._name]
+
+        test_model_type = self.env['ir.model'].create({
+            'model': WebKanbanAbstractTester._name,
+            'name': 'Kanban Abstract - Test Model',
+            'state': 'base',
+        })
+
+        test_stage_1 = self.env['web.kanban.stage'].create({
+            'name': 'Test Stage 1',
+            'res_model': test_model_type.id,
+        })
+        test_stage_2 = self.env['web.kanban.stage'].create({
+            'name': 'Test Stage 2',
+            'res_model': test_model_type.id,
+            'fold': True,
+        })
+
+        self.id_1 = test_stage_1.id
+        self.id_2 = test_stage_2.id
+
+    def test_read_group_stage_ids_base_case(self):
+        '''It should return a structure with the proper content'''
+        self.assertEqual(
+            self.test_model._read_group_stage_ids(),
+            (
+                [(self.id_1, 'Test Stage 1'), (self.id_2, 'Test Stage 2')],
+                {self.id_1: False, self.id_2: True},
+            )
+        )
+
+    def test_read_group_stage_ids_correct_associated_model(self):
+        '''It should only return info for stages with right associated model'''
+        stage_model = self.env['ir.model'].search([
+            ('model', '=', 'web.kanban.stage'),
+        ])
+        self.env['web.kanban.stage'].create({
+            'name': 'Test Stage 3',
+            'res_model': stage_model.id,
+        })
+
+        self.assertEqual(
+            self.test_model._read_group_stage_ids(),
+            (
+                [(self.id_1, 'Test Stage 1'), (self.id_2, 'Test Stage 2')],
+                {self.id_1: False, self.id_2: True},
+            )
+        )

web_kanban_stage/tests/test_web_kanban_stage.py

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from openerp.tests.common import TransactionCase
+
+
+class TestWebKanbanStage(TransactionCase):
+    def test_default_res_model_no_params(self):
+        '''It should return empty ir.model recordset if no params in context'''
+        test_stage = self.env['web.kanban.stage'].with_context({})
+        res_model = test_stage._default_res_model()
+
+        self.assertFalse(res_model)
+        self.assertEqual(res_model._name, 'ir.model')
+
+    def test_default_res_model_no_action(self):
+        '''It should return empty ir.model recordset if no action in params'''
+        test_stage = self.env['web.kanban.stage'].with_context(params={})
+        res_model = test_stage._default_res_model()
+
+        self.assertFalse(res_model)
+        self.assertEqual(res_model._name, 'ir.model')
+
+    def test_default_res_model_info_in_context(self):
+        '''It should return correct ir.model record if info in context'''
+        test_action = self.env['ir.actions.act_window'].create({
+            'name': 'Test Action',
+            'res_model': 'res.users',
+        })
+        test_stage = self.env['web.kanban.stage'].with_context(
+            params={'action': test_action.id},
+        )
+
+        self.assertEqual(
+            test_stage._default_res_model(),
+            self.env['ir.model'].search([('model', '=', 'res.users')])
+        )
+
+    def test_default_res_model_ignore_self(self):
+        '''It should not return ir.model record corresponding to stage model'''
+        test_action = self.env['ir.actions.act_window'].create({
+            'name': 'Test Action',
+            'res_model': 'web.kanban.stage',
+        })
+        test_stage = self.env['web.kanban.stage'].with_context(
+            params={'action': test_action.id},
+        )
+
+        self.assertFalse(test_stage._default_res_model())

web_kanban_stage/views/web_kanban_abstract.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+    Copyright 2016 LasLabs Inc.
+    License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+-->
+
+<odoo>
+    <record id="web_kanban_abstract_view_kanban" model="ir.ui.view">
+        <field name="name">Kanban Abstract - Base Kanban View</field>
+        <field name="model">web.kanban.abstract</field>
+        <field name="arch" type="xml">
+            <kanban default_group_by="stage_id" class="o_kanban_small_column">
+                <field name="display_name"/>
+                <field name="kanban_color"/>
+                <field name="kanban_priority"/>
+                <field name="stage_id" options="{'group_by_tooltip': {'description': 'Stage Description:', 'legend_priority': 'Use of Stars:'}}"/>
+                <field name="kanban_sequence"/>
+                <field name="kanban_legend_blocked"/>
+                <field name="kanban_legend_normal"/>
+                <field name="kanban_legend_done"/>
+                <field name="kanban_user_id"/>
+                <templates>
+                    <t t-name="kanban-box">
+                        <div t-attf-class="oe_kanban_color_#{kanban_getcolor(record.kanban_color.raw_value)} o_kanban_record oe_kanban_global_click">
+                            <div class="o_dropdown_kanban dropdown" name="card_dropdown_menu">
+                                <a class="dropdown-toggle btn" data-toggle="dropdown" href="#">
+                                    <span class="fa fa-bars fa-lg"/>
+                                </a>
+                                <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
+                                    <li t-if="widget.editable">
+                                        <a type="edit">Edit</a>
+                                    </li>
+                                    <li t-if="widget.deletable">
+                                        <a type="delete">Delete</a>
+                                    </li>
+                                    <li>
+                                        <ul class="oe_kanban_colorpicker" data-field="kanban_color"/>
+                                    </li>
+                                </ul>
+                            </div>
+                            <div class="o_kanban_title" name="card_header">
+                                <field name="kanban_status" widget="kanban_state_selection"/>
+                                <field name="display_name"/>
+                            </div>
+                            <div class="oe_kanban_details" name="card_body">
+                                <!-- Child modules should add model-specific data here -->
+                            </div>
+                            <div class="o_kanban_footer" name="card_footer">
+                                <div class="oe_kanban_bottom_left">
+                                    <field name="kanban_priority" widget="priority"/>
+                                </div>
+                                <div class="oe_kanban_bottom_right" t-if="record.kanban_user_id">
+                                    <img t-att-src="kanban_image('res.users', 'image_small', record.kanban_user_id.raw_value)"
+                                        class="oe_kanban_avatar_smallbox pull-right"/>
+                                </div>
+                            </div>
+                        </div>           
+                    </t>
+                </templates>
+            </kanban>
+        </field>
+    </record>
+</odoo>

web_kanban_stage/views/web_kanban_stage.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+    Copyright 2016 LasLabs Inc.
+    License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+-->
+
+<odoo>  
+    <record id="web_kanban_stage_view_form" model="ir.ui.view">
+        <field name="name">Kanban Stage - Form View</field>
+        <field name="model">web.kanban.stage</field>
+        <field name="arch" type="xml">
+            <form string="Kanban Stage">
+                <header/>
+                <sheet>
+                    <group string="Core Info" name="core_info">
+                        <field name="name"/>
+                        <field name="res_model"/>
+                        <field name="sequence"/>
+                        <field name="fold"/>
+                        <field name="description"/>
+                    </group>
+                    <group string="Priority and Statuses" name="explanations">
+                        <field name="legend_priority"/>
+                        <field name="legend_blocked"/>
+                        <field name="legend_done"/>
+                        <field name="legend_normal"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+    
+    <record id="web_kanban_stage_view_tree" model="ir.ui.view">
+        <field name="name">Kanban Stages - Tree View</field>
+        <field name="model">web.kanban.stage</field>
+        <field name="arch" type="xml">
+            <tree string="Kanban Stages">
+                <field name="name"/>
+                <field name="res_model"/>
+                <field name="sequence"/>
+            </tree>
+        </field>
+    </record>
+
+    <record id="web_kanban_stage_view_search" model="ir.ui.view">
+        <field name="name">Kanban Stages - Search View</field>
+        <field name="model">web.kanban.stage</field>
+        <field name="arch" type="xml">
+            <search string="Kanban Stages">
+                <field name="name"/>
+                <field name="res_model"/>
+                <field name="sequence"/>
+            </search>
+        </field>
+    </record>
+    
+    <record model="ir.actions.act_window" id="web_kanban_stage_action">
+        <field name="name">Kanban Stages</field>
+        <field name="res_model">web.kanban.stage</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="view_type">form</field>
+        <field name="view_mode">tree,form</field>
+    </record>
+
+    <menuitem id="web_kanban_stage_root_menu" name="Kanban" 
+        parent="base.menu_custom" sequence="50"/>
+
+    <menuitem id="web_kanban_stage_menu" name="Stages" 
+        parent="web_kanban_stage_root_menu" action="web_kanban_stage_action"/>
+</odoo>