[ADD] web_tree_many2one_clickable

Clickable many2one fields for tree views
========================================

This addon provides a separate widget to allow many2one fields in a tree view
open the linked resource when clicking on their name.

You can also define a system parameter to have this behaviour for all the
existing many2one fields in tree views.

Installation
============

Install it the regular way.

Configuration
=============

If you want to have all many2one fields clickable by default, you have to
define in *Configuration > Technical > Parameters > System parameters*, a new
parameter with name `web_tree_many2one_clickable.default` and with value
`true`.

Usage
=====

For the widget option, you need to add `widget="many2one_clickable"` attribute
in the XML field definition in the tree view.

For example:

`<field name="partner_id" widget="many2one_clickable" />`

will open the linked partner in a form view.

Known issues / Roadmap
======================

* You cannot deactivate clickable behaviour for an specific many2one field if
  you configure the system parameter.
* The value of the system parameter is retrieved for each many2one field
  present in the view instead of only once.

web_tree_many2one_clickable/static/src/js/web_tree_many2one_clickable.js

@@ -0,0 +1,104 @@
+//-*- coding: utf-8 -*-
+//############################################################################
+//
+//   OpenERP, Open Source Management Solution
+//   This module copyright
+//     (C) 2013 Therp BV (<http://therp.nl>).
+//     (c) 2015 Serv. Tecnol. Avanzados (http://www.serviciosbaeza.com)
+//              Pedro M. Baeza <pedro.baeza@serviciosbaeza.com>
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU Affero General Public License as
+//   published by the Free Software Foundation, either version 3 of the
+//   License, or (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU Affero General Public License for more details.
+//
+//   You should have received a copy of the GNU Affero General Public License
+//   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//############################################################################
+
+openerp.web_tree_many2one_clickable = function(instance, local)
+{
+    instance.web.list.Column.include({
+        /*
+        Load config parameter at init and store it in an accessible variable.
+        */
+        init: function(id, tag, attrs) {
+            this._super(id, tag, attrs);
+            if (this.widget == 'many2one_clickable') {
+                this.use_many2one_clickable = true;
+            } else if (this.type == 'many2one') {
+                this.get_options();
+            }
+        },
+
+        get_options: function() {
+            if (_.isUndefined(this.ir_option_clickable_loaded)) {
+                var self = this; // Needed for binding the instance
+                this.ir_option_clickable_loaded = $.Deferred();
+                this.use_many2one_clickable = false;
+                (new instance.web.Model("ir.config_parameter"))
+                    .query(["value"])
+                    .filter([['key', '=', 'web_tree_many2one_clickable.default']])
+                    .first()
+                    .then(function(param) {
+                        if (param) {
+                            self.use_many2one_clickable = (param.value == 'true');
+                        }
+                        self.ir_option_clickable_loaded.resolve();
+                    });
+                return this.ir_option_clickable_loaded;
+            }
+            return $.when();
+        },
+
+        _format: function (row_data, options)
+        {
+            if (this.use_many2one_clickable) {
+                return _.str.sprintf('<a class="oe_form_uri" data-many2one-clickable-model="%s" data-many2one-clickable-id="%s">%s</a>',
+                    this.relation,
+                    row_data[this.id].value[0],
+                    _.escape(row_data[this.id].value[1] || options.value_if_empty));
+            }
+            else {
+                return this._super(row_data, options);
+            }
+        },
+
+	});
+
+    /* many2one_clickable widget */
+
+    instance.web.list.columns.add(
+            'field.many2one_clickable',
+            'instance.web_tree_many2one_clickable.Many2OneClickable');
+
+    instance.web_tree_many2one_clickable.Many2OneClickable = openerp.web.list.Column.extend({
+    });
+
+    /* click action */
+
+    instance.web.ListView.List.include({
+        render: function()
+        {
+            var result = this._super(this, arguments),
+                self = this;
+            this.$current.delegate('a[data-many2one-clickable-model]',
+                'click', function()
+                {
+                    self.view.do_action({
+                        type: 'ir.actions.act_window',
+                        res_model: jQuery(this).data('many2one-clickable-model'),
+                        res_id: jQuery(this).data('many2one-clickable-id'),
+                        views: [[false, 'form']],
+                    });
+                });
+            return result;
+        },
+    });
+}