xhtml_style: expose methods from interface_translation.html

This way we can use gadgets using of ERP5JS translation API in xhtml
style.
This is really minimal compatibility layer and translation is not
actually performed.

bt5/erp5_ui_test/SkinTemplateItem/portal_skins/erp5_ui_test/gadget_textareafield.js.js

@@ -5,11 +5,22 @@
 
   rJS(window)
     .declareAcquiredMethod('notifyChange', 'notifyChange')
+    .declareAcquiredMethod('translateHtml', 'translateHtml')
     .declareMethod('render', function (options) {
-      this.element.firstChild.value = options.value || "";
-      this.element.firstChild.title = options.key;
-      this.element.firstChild.setAttribute('data-name',
-                                           options.key || "");
+      var form_gadget = this;
+      // gadgets can use translation methods also in xhtml style,
+      // this test gadget also exercise this.
+      return form_gadget
+        .translateHtml(form_gadget.element.innerHtml)
+        .push(function (html) {
+          form_gadget.element.innerHtml = html;
+          form_gadget.element.firstChild.value = options.value || "";
+          form_gadget.element.firstChild.title = options.key;
+          form_gadget.element.firstChild.setAttribute(
+            "data-name",
+            options.key || ""
+          );
+        });
     })
     .onEvent('change', function () {
       return this.notifyChange();

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_xhtml_style/erp5_gadgetfield.js.js

@@ -88,6 +88,17 @@
       return this.element.querySelector('form').querySelector('[type="submit"]').click();
     })
 
+    // Comply to interface_translation.html, but without actually translating.
+    .allowPublicAcquisition('translate', function (argument_list) {
+      return argument_list[0];
+    })
+    .allowPublicAcquisition('getTranslationList', function (argument_list) {
+      return argument_list[0];
+    })
+    .allowPublicAcquisition('translateHtml', function (argument_list) {
+      return argument_list[0];
+    })
+
     /////////////////////////////////////////////////////////////////
     // declared methods
     /////////////////////////////////////////////////////////////////