Add tags input directive.

app/coffee/modules/base/tags.coffee

@@ -0,0 +1,50 @@
+###
+# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
+# Copyright (C) 2014 Jesús Espino Garcia <jespinog@gmail.com>
+# Copyright (C) 2014 David Barragán Merino <bameda@dbarragan.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/>.
+#
+# File: modules/base/tags.coffee
+###
+
+taiga = @.taiga
+
+# Directive that parses/format tags inputfield.
+
+TagsDirective = ->
+    formatter = (v) ->
+        if _.isArray(v)
+            return v.join(", ")
+        return ""
+
+    parser = (v) ->
+        return [] if not v
+        result = _(v.split(",")).map((x) -> _.str.trim(x))
+                                .map((x) -> x.replace(/\s+/, "-"))
+
+        return result.value()
+
+    link = ($scope, $el, $attrs, $ctrl) ->
+        $ctrl.$formatters.push(formatter)
+        $ctrl.$parsers.push(parser)
+
+    return {
+        require: "ngModel"
+        link: link
+    }
+
+
+module = angular.module("taigaBase")
+module.directive("tgTags", TagsDirective)