add email preview

booking.emails_admin.inc

@@ -267,6 +267,22 @@ function booking_manual_email_form($form, &$form_state)
 {
   global $event;
   //see http://www.jaypan.com/blog/themeing-drupal-7-forms-tables-checkboxes-or-radios	
+  /*
+  create hidden form element that we will populate with JSON data via ajax
+  create select element defining the pre-selections available
+  create submit button that calls ajax to update hidden form element, then calls ajax to check the checkboxes based on the hidden form element
+  
+  info on turning JSON data back to array
+  http://stackoverflow.com/questions/29076219/javascript-storing-array-of-objects-in-hidden-field 
+  
+  ajax references:
+  http://www.maged.me/blog/drupal-7-execute-javascript-code-after-ajax-call
+  https://www.drupal.org/node/1028410
+  https://www.drupal.org/node/2046693 
+  
+  jquery to check the checkboxes:
+  http://jsfiddle.net/nanoquantumtech/dnhwz/ 
+  */  
   $form = array();	
   $options = array();
   $preselection_options = array();
@@ -335,26 +351,13 @@ function booking_manual_email_form($form, &$form_state)
     '#required' => TRUE,
     '#default_value' => 'NULL',
     '#options' => $email_options_array,
+    '#ajax' => array(
+      'event' => 'change',
+      'callback' => '_booking_email_get_preview_callback',
+      'wrapper' => 'booking_email_preview_wrapper',
+    ),	    
   );	
   
-  //@todo
-  /*
-  create hidden form element that we will populate with JSON data via ajax
-  create select element defining the pre-selections available
-  create submit button that calls ajax to update hidden form element, then calls ajax to check the checkboxes based on the hidden form element
-  
-  info on turning JSON data back to array
-  http://stackoverflow.com/questions/29076219/javascript-storing-array-of-objects-in-hidden-field 
-  
-  ajax references:
-  http://www.maged.me/blog/drupal-7-execute-javascript-code-after-ajax-call
-  https://www.drupal.org/node/1028410
-  https://www.drupal.org/node/2046693 
-  
-  jquery to check the checkboxes:
-  http://jsfiddle.net/nanoquantumtech/dnhwz/ 
-  */
-  
   $form['booking-email-default-ids'] = array (
     '#type' => 'hidden',
     '#value' => "[]",
@@ -375,7 +378,14 @@ function booking_manual_email_form($form, &$form_state)
       'callback' => '_booking_email_get_default_selection_callback',
       'wrapper' => 'booking_email_default_ids_wrapper',
     ),				
-  );	
+  );
+
+    $form['booking-email-preview'] = array(
+    '#type' => 'container',
+    '#children' => "<p>Preview Email</p><pre>Blah</pre>",
+    '#prefix' => '<div id="booking_email_preview_wrapper">',
+    '#suffix' => '</div>',    
+  );
   
   $form['submit'] = array (
     '#type' => 'submit',
@@ -469,6 +479,69 @@ function booking_manual_email_form($form, &$form_state)
   );
 }
 
+/**
+ * Callback to update preview of email that will be sent
+ *
+ */
+function _booking_email_get_preview_callback($form, $form_state) {
+  global $event;
+  $markup_pre = "<div id=\"booking_email_preview_wrapper\"><pre>";
+  $markup_post = "</pre></div>";
+  $text = "";
+  $emailtype = $form_state['values']['email-type'];
+
+  switch ($emailtype) {
+    case "registration":
+      $text = variable_get('booking_email_bookedin_text');
+      break;
+  }
+/*
+        if ($form_state['values']['email-type'] == 'registration') {
+          $message = t('Processing a manual registration email to id @info', array ('@info' => $key));
+          _booking_registration_email($key, false, true);
+        }		
+        elseif ($form_state['values']['email-type'] == 'initialtravelrequired') {
+          $message = t('Processing a manual initial travel form request email to id @info', array ('@info' => $key));
+          _booking_travelform_initial_request_email($key);
+        }
+        elseif ($form_state['values']['email-type'] == 'remindertravelrequired') {
+          $message = t('Processing a manual reminder travel form request email to id @info', array ('@info' => $key));
+          _booking_travelform_reminder_request_email($key);
+        }	        
+        elseif ($form_state['values']['email-type'] == 'balance') {
+          $message = t('Processing a manual outstanding balance email to id @info', array ('@info' => $key));
+          _booking_balance_payment_email($key);  
+        }
+        elseif ($form_state['values']['email-type'] == 'complete') {
+          $message = t('Processing a manual registration complete email to id @info', array ('@info' => $key));
+          _booking_registration_email($key, true, true); 
+        }	
+        elseif ($form_state['values']['email-type'] == 'travelcomplete') {
+          $message = t('Processing a manual travelform complete email to id @info', array ('@info' => $key));
+          _booking_travelform_confirmation_email($key); 
+        }
+        elseif ($form_state['values']['email-type'] == 'withdrawal') {
+          $message = t('Processing a manual withdrawal email to id @info', array ('@info' => $key));
+          _booking_demoted_to_notcoming_email($key); 
+        }
+        elseif ($form_state['values']['email-type'] == 'missedpayment') {
+          $message = t('Processing a manual missedpayment email to id @info', array ('@info' => $key));
+          _booking_missedpayment_email($key); 
+        }
+        elseif (strpos($form_state['values']['email-type'], 'customlogistics') !== false) {
+          $message = t('Processing a @custom type email from logistics to id @info', array ('@custom' => $form_state['values']['email-type'], '@info' => $key));
+          _booking_custom_email($key, $form_state['values']['email-type'], 'logistics');  
+        }									
+        elseif (strpos($form_state['values']['email-type'], 'custom') !== false) {
+          $message = t('Processing a @custom type email to id @info', array ('@custom' => $form_state['values']['email-type'], '@info' => $key));
+          _booking_custom_email($key, $form_state['values']['email-type'], 'contact');  
+        }
+*/
+
+  //generate html that will be used to update div booking_email_preview_wrapper
+  return $markup_pre . $text . $markup_post;
+}
+
 /**
  * Callback to update hidden form value with default checkbox details
  *