Specialized WFormDelegate for WDate

This delegate will create a WDateEdit for representing WDate
values in WTemplateFormView.

Author: YoikaG

src/Wt/Form/WFormDelegate.C

@@ -5,7 +5,14 @@
  */
 #include "Wt/Form/WFormDelegate.h"
 
+#include <Wt/WDateEdit.h>
+#include <Wt/WDateValidator.h>
 #include <Wt/WLineEdit.h>
+#include <Wt/WLogger.h>
+
+namespace Wt {
+LOGGER("WFormDelegate");
+}
 
 namespace Wt {
   namespace Form {
@@ -18,5 +25,30 @@ std::unique_ptr<Wt::WWidget> WFormDelegate<Wt::WString, void>::createFormWidget(
 {
   return std::make_unique<Wt::WLineEdit>();
 }
+
+WFormDelegate<Wt::WDate, void>::WFormDelegate()
+  : WAbstractFormDelegate()
+{
+}
+
+std::unique_ptr<Wt::WWidget> WFormDelegate<Wt::WDate, void>::createFormWidget()
+{
+  return std::make_unique<Wt::WDateEdit>();
+}
+
+std::shared_ptr<Wt::WValidator> WFormDelegate<Wt::WDate, void>::createValidator()
+{
+  return std::make_shared<Wt::WDateValidator>();
+}
+
+void WFormDelegate<Wt::WDate, void>::updateModelValue(Wt::WFormModel *model, Wt::WFormModel::Field field, Wt::WFormWidget *edit)
+{
+  Wt::WDateEdit *dateEdit = dynamic_cast<Wt::WDateEdit *>(edit);
+  if (dateEdit) {
+    model->setValue(field, dateEdit->date());
+  } else {
+    LOG_ERROR("Could not cast edit to WDateEdit!");
+  }
+}
   }
 }

src/Wt/Form/WFormDelegate.h

@@ -32,6 +32,32 @@ class WT_API WFormDelegate<Wt::WString, void> : public WAbstractFormDelegate
    */
   std::unique_ptr<Wt::WWidget> createFormWidget() override;
 };
+
+/*! \brief Form delegate class for WDate
+ *
+ * This will create a WDateEdit to display the WDate value in the
+ * View
+ */
+template<>
+class WT_API WFormDelegate<Wt::WDate, void> : public WAbstractFormDelegate
+{
+public:
+  /*! \brief Create a form delegate
+   */
+  WFormDelegate();
+
+  /*! \brief Create WDateEdit to be used in the View
+   */
+  std::unique_ptr<Wt::WWidget> createFormWidget() override;
+
+  /*! \brief Create WDateValidator
+   */
+  std::shared_ptr<Wt::WValidator> createValidator() override;
+
+  /*! \brief Update the value in the Model
+   */
+  void updateModelValue(Wt::WFormModel *model, Wt::WFormModel::Field field, Wt::WFormWidget *edit) override;
+};
   }
 }