[IMP] web: filter when clicking on tags in Kanban

This commit adds a feature to the widget Many2ManyTags for kanban
views. When a tag is clicked, records are filtered on the given
tag, in addition to the active filters in the search view.

addons/web/static/src/js/chrome/search_view.js

@@ -603,6 +603,34 @@ var SearchView = Widget.extend({
             current_category = filter.category;
         });
     },
+
+    //--------------------------------------------------------------------------
+    // Public
+    //--------------------------------------------------------------------------
+
+    /**
+     * Activates a filter for a given domain.
+     * FIXME: the way it is done could be improved, but the actual state of the
+     * searchview doesn't allow to do much better. For instance, if the same
+     * filter is added twice, it appears twice in the facets. This should be
+     * improved when the searchview will be rewrote.
+
+     * @param {string} domain the domain to filter on
+     * @param {string} help the text to display in the facet
+     */
+    addFilter: function (domain, help) {
+        var filter = {
+            attrs: {
+                domain: domain,
+                help: help,
+            },
+        };
+        var filterWidget = new search_inputs.Filter(filter);
+        var filterGroup = new search_inputs.FilterGroup([filterWidget], this);
+        var facet = filterGroup.make_facet([filterGroup.make_value(filter)]);
+        this.query.add([facet], {silent: true});
+        this.query.trigger('reset');
+    },
 });
 
 _.extend(SearchView, {

addons/web/static/src/js/chrome/view_manager.js

@@ -28,6 +28,7 @@ var ViewManager = Widget.extend(ControlPanelMixin, {
             _.extend(this.env, this._process_search_data(d.domains, d.contexts, d.groupbys));
             this.active_view.controller.reload(_.extend({}, this.env));
         },
+        add_filter: '_onAddFilter',
         switch_view: function(event) {
             if ('res_id' in event.data) {
                 this.env.currentId = event.data.res_id;
@@ -649,6 +650,14 @@ var ViewManager = Widget.extend(ControlPanelMixin, {
     // Handlers
     //--------------------------------------------------------------------------
 
+    /**
+     * @private
+     */
+    _onAddFilter: function (event) {
+        if (this.searchview) {
+            this.searchview.addFilter(event.data.domain, event.data.help);
+        }
+    },
     /**
      * This handler is probably called by a sub form view when the user discards
      * its value.  The usual result of this is that we switch back to the

addons/web/static/src/js/fields/relational_fields.js

@@ -1656,6 +1656,18 @@ var FormFieldMany2ManyTags = FieldMany2ManyTags.extend({
 });
 
 var KanbanFieldMany2ManyTags = FieldMany2ManyTags.extend({
+    events: _.extend({}, FieldMany2ManyTags.prototype.events, {
+        'click .o_tag': '_onTagClicked',
+    }),
+
+    //--------------------------------------------------------------------------
+    // Private
+    //--------------------------------------------------------------------------
+
+    /**
+     * @override
+     * @private
+     */
     _render: function () {
         var self = this;
         this.$el.empty().addClass('o_field_many2manytags o_kanban_tags');
@@ -1670,6 +1682,7 @@ var KanbanFieldMany2ManyTags = FieldMany2ManyTags.extend({
                     $tag.hide();
                 } else {
                     $tag.addClass('o_tag o_tag_color_' + m2m.data[self.colorField]);
+                    $tag.data('res_id', m2m.res_id);
                 }
             } else {
                 // display tags in grey by default
@@ -1677,6 +1690,24 @@ var KanbanFieldMany2ManyTags = FieldMany2ManyTags.extend({
             }
         });
     },
+
+    //--------------------------------------------------------------------------
+    // Handlers
+    //--------------------------------------------------------------------------
+
+    /**
+     * @private
+     * @param {MouseEvent} e
+     */
+    _onTagClicked: function (e) {
+        var resID = $(e.currentTarget).data('res_id');
+        var record = _.findWhere(this.value.data, {res_id: resID});
+        var displayName = record.data.display_name;
+        this.trigger_up('add_filter', {
+            domain: "[['" + this.name + "','=','" + displayName + "']]",
+            help: displayName,
+        });
+    }
 });
 
 var FieldMany2ManyCheckBoxes = AbstractField.extend({

addons/web/static/tests/views/kanban_tests.js

@@ -505,8 +505,8 @@ QUnit.module('Views', {
         kanban.destroy();
     });
 
-    QUnit.test('many2many_tags are correctly fetched and displayed', function (assert) {
+    QUnit.test('many2many_tags in kanban views', function (assert) {
-        assert.expect(10);
+        assert.expect(11);
 
         this.data.partner.records[0].category_ids = [6, 7];
         this.data.partner.records[1].category_ids = [7];
@@ -528,6 +528,14 @@ QUnit.module('Views', {
                 assert.step(route);
                 return this._super.apply(this, arguments);
             },
+            intercepts: {
+                add_filter: function (event) {
+                    assert.deepEqual(event.data, {
+                        domain: "[['category_ids','=','gold']]",
+                        help: 'gold',
+                    }, "should trigger an 'add_filter' event with correct data");
+                },
+            },
         });
 
         var $first_record = kanban.$('.o_kanban_record:first()');
@@ -550,6 +558,9 @@ QUnit.module('Views', {
         assert.strictEqual(kanban.$('.o_kanban_record:first()').find('.o_field_many2manytags .o_tag').length, 2,
             'first record should still contain only 2 tags');
 
+        // click on a tag to trigger a search by tag
+        kanban.$('.o_tag:contains(gold):first').click();
+
         kanban.destroy();
     });