Admin: Add configuration setting course_chat_send_message_only_on_button

BT#16926

true: send message on button click only
false: the send on textarea enter too.

main/chat/chat.php

@@ -58,6 +58,7 @@ $view->assign('icons', $iconList);
 $view->assign('emoji_strategy', CourseChatUtils::getEmojiStrategy());
 $view->assign('emoji_smile', \Emojione\Emojione::toImage(':smile:'));
 $view->assign('restrict_to_coach', api_get_configuration_value('course_chat_restrict_to_coach'));
+$view->assign('send_message_only_on_button', api_get_configuration_value('course_chat_send_message_only_on_button') === true ? 1 : 0);
 
 $template = $view->get_template('chat/chat.tpl');
 $content = $view->fetch($template);

main/install/configuration.dist.php

@@ -1422,6 +1422,9 @@ ALTER TABLE notification_event ADD COLUMN event_id INT NULL;
 // Skip scorm package file names clean up
 //$_configuration['skip_scorm_package_clean_up'] = false;
 
+// Course chat: Send message on button click only, if false then send on enter too.
+//$_configuration['course_chat_send_message_only_on_button'] = true;
+
 // KEEP THIS AT THE END
 // -------- Custom DB changes
 // Add user activation by confirmation email

main/template/default/chat/chat.tpl

@@ -269,6 +269,16 @@ $(function () {
 
     $('button#chat-send-message').on('click', ChChat.onSendMessageListener);
 
+    if ({{ send_message_only_on_button }} == 0) {
+        $('.emoji-wysiwyg-editor').keypress(function (e) {
+            if (e.which == 13) {
+                ChChat.onSendMessageListener(e);
+
+                return false;    //<---- Add this line
+            }
+        });
+    }
+
     $('#chat-users').on('click', 'div.chat-user', function (e) {
         e.preventDefault();
         var jSelf = $(this),