[ADD] web_widget_pattern (#458)

web_widget_pattern/static/src/js/web_widget_pattern.js

@@ -0,0 +1,24 @@
+//-*- coding: utf-8 -*-
+//© 2016 Therp BV <http://therp.nl>
+//License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+openerp.web_widget_pattern = function(instance)
+{
+    instance.web.form.FieldChar.include({
+        is_syntax_valid: function()
+        {
+            if(this.options.pattern)
+            {
+                var val = this.$('input').val(),
+                    regex = new RegExp(
+                    this.options.pattern, this.options.pattern_modifiers || ''
+                );
+                if(!!val && !regex.test(this.$('input').val()))
+                {
+                    return false;
+                }
+            }
+            return this._super.apply(this, arguments);
+        },
+    });
+};