Specialized WFormDelegate for WDateTime

This delegate will create a WLineEdit for representing WDateTime
values in WTemplateFormView.

Author: YoikaG

src/Wt/Form/WFormDelegate.C

@@ -7,9 +7,11 @@
 
 #include <Wt/WCheckBox.h>
 #include <Wt/WDateEdit.h>
+#include <Wt/WDateTime.h>
 #include <Wt/WDateValidator.h>
 #include <Wt/WIntValidator.h>
 #include <Wt/WLineEdit.h>
+#include <Wt/WLocale.h>
 #include <Wt/WLogger.h>
 #include <Wt/WTimeEdit.h>
 #include <Wt/WTimeValidator.h>
@@ -80,6 +82,24 @@ void WFormDelegate<Wt::WTime, void>::updateModelValue(Wt::WFormModel *model, Wt:
   }
 }
 
+WFormDelegate<Wt::WDateTime, void>::WFormDelegate()
+  : WAbstractFormDelegate()
+{
+}
+
+std::unique_ptr<Wt::WWidget> WFormDelegate<Wt::WDateTime, void>::createFormWidget()
+{
+  return std::make_unique<Wt::WLineEdit>();
+}
+
+void WFormDelegate<Wt::WDateTime, void>::updateModelValue(Wt::WFormModel *model, Wt::WFormModel::Field field, Wt::WFormWidget *edit)
+{
+  if (!edit->valueText().empty()) {
+    Wt::WDateTime value = Wt::WDateTime::fromString(edit->valueText(), Wt::WLocale::currentLocale().dateTimeFormat());
+    model->setValue(field, value);
+  }
+}
+
 WFormDelegate<bool,void>::WFormDelegate()
   : WAbstractFormDelegate()
 {

src/Wt/Form/WFormDelegate.h

@@ -85,6 +85,31 @@ class WT_API WFormDelegate<Wt::WTime, void> : public WAbstractFormDelegate
   void updateModelValue(Wt::WFormModel *model, Wt::WFormModel::Field field, Wt::WFormWidget *edit) override;
 };
 
+/*! \brief Form delegate class for WDateTime
+ *
+ * This will create a WLineEdit to display the WDateTime value
+ * in the View
+ */
+template<>
+class WT_API WFormDelegate<Wt::WDateTime, void> : public WAbstractFormDelegate
+{
+public:
+  /*! \brief Create a form delegate
+   */
+  WFormDelegate();
+
+  /*! \brief Create a WLineEdit to be used in the View
+   */
+  std::unique_ptr<Wt::WWidget> createFormWidget() override;
+
+  /*! \brief Update the value in the Model
+   *
+   * In the future this implementation will change to return a dedicated widget
+   * for WDateTime objects.
+   */
+  void updateModelValue(Wt::WFormModel *model, Wt::WFormModel::Field field, Wt::WFormWidget *edit) override;
+};
+
 /*! \brief Form delegate class for boolean
  *
  * This will create a WCheckBox to display the boolean value