UI: Fix CSS classes for legacy buttons

assets/vue/views/documents/List.vue

@@ -114,7 +114,7 @@
           {{ $t('Download') }}
         </Button>
         -->
-        <Button label="{{ $t('Delete selected') }}" class="btn btn-danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length">
+        <Button label="{{ $t('Delete selected') }}" class="btn btn--danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length">
           <v-icon icon="mdi-delete"/>
           {{ $t('Delete selected') }}
         </Button>
@@ -219,7 +219,7 @@
             <v-icon icon="mdi-pencil"/>
           </Button>
 
-          <Button v-if="isAuthenticated && isCurrentTeacher" class="btn btn-danger" @click="confirmDeleteItem(slotProps.data)" >
+          <Button v-if="isAuthenticated && isCurrentTeacher" class="btn btn--danger" @click="confirmDeleteItem(slotProps.data)" >
             <v-icon icon="mdi-delete"/>
           </Button>
         </div>

assets/vue/views/page/List.vue

@@ -10,7 +10,7 @@
           <v-icon icon="mdi-file-plus"/>
           {{ $t('New page') }}
         </Button>
-<!--        <Button label="{{ $t('Delete selected') }}" class="btn btn-danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length">-->
+<!--        <Button label="{{ $t('Delete selected') }}" class="btn btn--danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length">-->
 <!--          <v-icon icon="mdi-delete"/>-->
 <!--          {{ $t('Delete selected') }}-->
 <!--        </Button>-->
@@ -66,7 +66,7 @@
             <v-icon icon="mdi-pencil"/>
           </Button>
 
-          <Button v-if="isAuthenticated" class="btn btn-danger" @click="confirmDeleteItem(slotProps.data)" >
+          <Button v-if="isAuthenticated" class="btn btn--danger" @click="confirmDeleteItem(slotProps.data)" >
             <v-icon icon="mdi-delete"/>
           </Button>
         </div>

assets/vue/views/personalfile/List.vue

@@ -5,7 +5,7 @@
         <Button label="New folder" icon="fa fa-folder-plus" class="btn btn--primary" @click="openNew" />
         <Button label="Upload" icon="fa fa-file-upload" class="btn btn--primary" @click="uploadDocumentHandler()" />
         <Button label="Shared" icon="fa fa-file-upload" class="btn btn--success" @click="sharedDocumentHandler()" />
-        <Button label="Delete" icon="pi pi-trash" class="btn btn-danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length" />
+        <Button label="Delete" icon="pi pi-trash" class="btn btn--danger " @click="confirmDeleteMultiple" :disabled="!selectedItems || !selectedItems.length" />
       </div>
     </div>
   </div>
@@ -70,7 +70,7 @@
         <div class="flex flex-row gap-2">
           <Button icon="fa fa-info-circle"  class="btn btn--primary " @click="showHandler(slotProps.data)" />
           <Button v-if="isAuthenticated" icon="pi pi-pencil" class="btn btn--primary p-mr-2" @click="editHandler(slotProps.data)" />
-          <Button v-if="isAuthenticated" icon="pi pi-trash" class="btn btn-danger" @click="confirmDeleteItem(slotProps.data)" />
+          <Button v-if="isAuthenticated" icon="pi pi-trash" class="btn btn--danger" @click="confirmDeleteItem(slotProps.data)" />
         </div>
       </template>
     </Column>

public/main/admin/access_url_edit_course_category_to_url.php

@@ -201,15 +201,15 @@ $url_list = UrlManager::get_url_data();
   <td width="10%" valign="middle" align="center">
   <?php if ($ajax_search) {
         ?>
-	<button class="btn btn-default" type="button" onclick="remove_item(document.getElementById('destination_users'))" ></button>
+	<button class="btn btn--plain" type="button" onclick="remove_item(document.getElementById('destination_users'))" ></button>
   <?php
     } else {
         ?>
-	<button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
+	<button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
         <em class="fa fa-arrow-right"></em>
     </button>
 	<br /><br />
-	<button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
+	<button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
         <em class="fa fa-arrow-left"></em>
     </button>
    <?php

public/main/admin/access_url_edit_courses_to_url.php

@@ -214,17 +214,17 @@ $url_list = UrlManager::get_url_data();
                 <?php
                 if ($ajax_search) {
                     ?>
-                    <button class="btn btn-default" type="button" onclick="remove_item(document.getElementById('destination_users'))" >
+                    <button class="btn btn--plain" type="button" onclick="remove_item(document.getElementById('destination_users'))" >
                         <em class="fa fa-arrow-left"></em>
                     </button>
                 <?php
                 } else {
                     ?>
-                    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
+                    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
                         <em class="fa fa-arrow-right"></em>
                     </button>
                     <br /><br />
-                    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
+                    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
                         <em class="fa fa-arrow-left"></em>
                     </button>
                 <?php
@@ -252,9 +252,9 @@ $url_list = UrlManager::get_url_data();
                 <br />
                 <?php
                 if (isset($_GET['add'])) {
-                    echo '<button class="btn btn-default" onclick="valide()" >'.get_lang('Add courses to an URL').'</button>';
+                    echo '<button class="btn btn--plain" onclick="valide()" >'.get_lang('Add courses to an URL').'</button>';
                 } else {
-                    echo '<button class="btn btn-default" onclick="valide()" >'.get_lang('Edit courses of an URL').'</button>';
+                    echo '<button class="btn btn--plain" onclick="valide()" >'.get_lang('Edit courses of an URL').'</button>';
                 }
                 ?>
             </td>

public/main/admin/access_url_edit_usergroup_to_url.php

@@ -232,19 +232,19 @@ $url_list = UrlManager::get_url_data();
                 <br><br><br><br>
                 <?php if ($ajax_search) {
             ?>
-                    <button class="btn btn-default" type="button"
+                    <button class="btn btn--plain" type="button"
                             onclick="remove_item(document.getElementById('destination_users'))">
                         <em class="fa fa-arrow-left"></em>
                     </button>
                 <?php
         } else {
             ?>
-                    <button class="btn btn-default" type="button"
+                    <button class="btn btn--plain" type="button"
                             onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))">
                         <em class="fa fa-arrow-right"></em>
                     </button>
                     <br/><br/>
-                    <button class="btn btn-default" type="button"
+                    <button class="btn btn--plain" type="button"
                             onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))">
                         <em class="fa fa-arrow-left"></em>
                     </button>
@@ -266,7 +266,7 @@ $url_list = UrlManager::get_url_data();
         </div>
         <div class="row">
             <div class="col-xs-12 text-center">
-                <button class="save btn btn-primary" onclick="valide()">
+                <button class="save btn btn--primary" onclick="valide()">
                     <span class="fa fa-save fa-fw" aria-hidden="true"></span>
                     <?php echo isset($_GET['add']) ? get_lang('Add group to URL') : get_lang('Edit groups for one URL'); ?>
                 </button>

public/main/admin/access_url_edit_users_to_url.php

@@ -266,17 +266,17 @@ if (!empty($errorMsg)) {
   <td width="10%" valign="middle" align="center">
     <?php if ($ajax_search) {
         ?>
-        <button class="btn btn-default" type="button" onclick="remove_item(document.getElementById('destination_users'))">
+        <button class="btn btn--plain" type="button" onclick="remove_item(document.getElementById('destination_users'))">
             <em class="fa fa-arrow-left"></em>
         </button>
     <?php
     } else {
         ?>
-        <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
+        <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('origin_users'), document.getElementById('destination_users'))" >
             <em class="fa fa-arrow-right"></em>
         </button>
         <br /><br />
-        <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
+        <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('destination_users'), document.getElementById('origin_users'))" >
             <em class="fa fa-arrow-left"></em>
 
         </button>

public/main/admin/add_courses_to_usergroup.php

@@ -263,11 +263,11 @@ if (!empty($errorMsg)) {
   <?php
   } else {
       ?>
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
         <em class="fa fa-arrow-right"></em>
     </button>
     <br /><br />
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
         <em class="fa fa-arrow-left"></em>
     </button>
     <?php
@@ -291,7 +291,7 @@ echo Display::select(
     <td colspan="3" align="center">
         <br />
         <?php
-        echo '<button class="btn btn-primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe class to courses').'</button>';
+        echo '<button class="btn btn--primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe class to courses').'</button>';
         ?>
     </td>
 </tr>

public/main/admin/add_sessions_to_promotion.php

@@ -212,17 +212,17 @@ if (!empty($errorMsg)) {
   <?php
   if ($ajax_search) {
       ?>
-    <button class="btn btn-default" type="button" onclick="remove_item(document.getElementById('session_in_promotion'))" >
+    <button class="btn btn--plain" type="button" onclick="remove_item(document.getElementById('session_in_promotion'))" >
         <em class="fa fa-arrow-left"></em>
     </button>
   <?php
   } else {
       ?>
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('session_not_in_promotion'), document.getElementById('session_in_promotion'))" onclick="moveItem(document.getElementById('session_not_in_promotion'), document.getElementById('session_in_promotion'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('session_not_in_promotion'), document.getElementById('session_in_promotion'))" onclick="moveItem(document.getElementById('session_not_in_promotion'), document.getElementById('session_in_promotion'))">
         <em class="fa fa-arrow-right"></em>
     </button>
     <br /><br />
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('session_in_promotion'), document.getElementById('session_not_in_promotion'))" onclick="moveItem(document.getElementById('session_in_promotion'), document.getElementById('session_not_in_promotion'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('session_in_promotion'), document.getElementById('session_not_in_promotion'))" onclick="moveItem(document.getElementById('session_in_promotion'), document.getElementById('session_not_in_promotion'))">
         <em class="fa fa-arrow-left"></em>
     </button>
     <?php
@@ -246,7 +246,7 @@ if (!empty($errorMsg)) {
     <td colspan="3" align="center">
         <br />
         <?php
-        echo '<button class="btn btn-primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe sessions to promotion').'</button>';
+        echo '<button class="btn btn--primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe sessions to promotion').'</button>';
         ?>
     </td>
 </tr>

public/main/admin/add_sessions_to_usergroup.php

@@ -248,17 +248,17 @@ if (!empty($errorMsg)) {
   <?php
   if ($ajax_search) {
       ?>
-    <button class="btn btn-default" type="button" onclick="remove_item(document.getElementById('elements_in'))" >
+    <button class="btn btn--plain" type="button" onclick="remove_item(document.getElementById('elements_in'))" >
         <em class="fa fa-arrow-left"></em>
     </button>
   <?php
   } else {
       ?>
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
         <em class="fa fa-arrow-right"></em>
     </button>
     <br /><br />
-    <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
+    <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
         <em class="fa fa-arrow-left"></em>
     </button>
     <?php
@@ -282,7 +282,7 @@ echo Display::select(
     <td colspan="3" align="center">
         <br />
         <?php
-        echo '<button class="btn btn-primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe class to sessions').'</button>';
+        echo '<button class="btn btn--primary" type="button" value="" onclick="valide()" >'.get_lang('Subscribe class to sessions').'</button>';
         ?>
     </td>
 </tr>

public/main/admin/add_users_to_usergroup.php

@@ -434,11 +434,11 @@ echo Display::input('hidden', 'add_type', null);
     </div>
     <div class="col-md-2">
         <div style="padding-top:54px;width:auto;text-align: center;">
-        <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
+        <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))" onclick="moveItem(document.getElementById('elements_not_in'), document.getElementById('elements_in'))">
             <em class="fa fa-arrow-right"></em>
         </button>
         <br /><br />
-        <button class="btn btn-default" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
+        <button class="btn btn--plain" type="button" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))" onclick="moveItem(document.getElementById('elements_in'), document.getElementById('elements_not_in'))">
             <em class="fa fa-arrow-left"></em>
         </button>
         </div>
@@ -464,7 +464,7 @@ echo Display::input('hidden', 'add_type', null);
     </div>
 </div>
 <?php
-    echo '<button class="btn btn-primary" type="button" value="" onclick="valide()" ><em class="fa fa-check"></em>'.
+    echo '<button class="btn btn--primary" type="button" value="" onclick="valide()" ><em class="fa fa-check"></em>'.
         get_lang('Subscribe users to class').'</button>';
 ?>
 </form>

public/main/admin/course_list.php

@@ -458,7 +458,7 @@ if (isset($_GET['search']) && 'advanced' === $_GET['search']) {
         ['id' => 'course-search-keyword', 'aria-label' => get_lang('Search courses')]
     );
     $form->addButtonSearch(get_lang('Search courses'));
-    $advanced = '<a class="btn btn-default" href="'.api_get_path(WEB_CODE_PATH).'admin/course_list.php?search=advanced">
+    $advanced = '<a class="btn btn--plain" href="'.api_get_path(WEB_CODE_PATH).'admin/course_list.php?search=advanced">
         <em class="fa fa-search"></em> '.
         get_lang('Advanced search').'</a>';
 

public/main/admin/course_list_admin.php

@@ -396,7 +396,7 @@ if (isset($_GET['search']) && 'advanced' === $_GET['search']) {
         ['id' => 'course-search-keyword', 'aria-label' => get_lang('SearchCourse')]
     );
     $form->addButtonSearch(get_lang('SearchCourse'));
-    $advanced = '<a class="btn btn-default" href="'.api_get_path(WEB_CODE_PATH).'admin/course_list_admin.php?search=advanced">
+    $advanced = '<a class="btn btn--plain" href="'.api_get_path(WEB_CODE_PATH).'admin/course_list_admin.php?search=advanced">
         <em class="fa fa-search"></em> '.
         get_lang('Advanced search').'</a>';
 

public/main/admin/dashboard_add_courses_to_user.php

@@ -257,17 +257,17 @@ if (!empty($msg)) {
         </div>
         <div class="control-course">
             <div class="separate-action">
-                <button class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
+                <button class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
                     <em class="fa fa-arrow-right"></em>
                 </button>
             </div>
             <div class="separate-action">
-                <button class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
+                <button class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
                     <em class="fa fa-arrow-left"></em>
                 </button>
             </div>
             <div class="separate-action">
-                <?php echo '<button class="btn btn-success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>'; ?>
+                <?php echo '<button class="btn btn--success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>'; ?>
             </div>
         </div>
     </div>

public/main/admin/dashboard_add_sessions_to_user.php

@@ -73,10 +73,10 @@ function search_sessions($needle, $type)
 
         if (api_is_multiple_url_enabled()) {
             $sql = " SELECT s.id, s.name FROM $tbl_session s
-                     LEFT JOIN $tbl_session_rel_access_url a 
+                     LEFT JOIN $tbl_session_rel_access_url a
                      ON (s.id = a.session_id)
-                     WHERE  
+                     WHERE
-                        s.name LIKE '$needle%' $without_assigned_sessions AND 
+                        s.name LIKE '$needle%' $without_assigned_sessions AND
                         access_url_id = ".api_get_current_access_url_id();
         } else {
             $sql = "SELECT s.id, s.name FROM $tbl_session s
@@ -254,7 +254,7 @@ $result = Database::query($sql);
                 if ($ajax_search) {
                     ?>
                     <div class="separate-action">
-                        <button class="btn btn-primary" type="button" onclick="remove_item(document.getElementById('destination'))">
+                        <button class="btn btn--primary" type="button" onclick="remove_item(document.getElementById('destination'))">
                             <em class="fa fa-arrow-left"></em>
                         </button>
                     </div>
@@ -262,19 +262,19 @@ $result = Database::query($sql);
                 } else {
                     ?>
                 <div class="separate-action">
-                    <button class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
+                    <button class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
                         <em class="fa fa-arrow-right"></em>
                     </button>
                 </div>
                 <div class="separate-action">
-                    <button class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
+                    <button class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
                         <em class="fa fa-arrow-left"></em>
                     </button>
                 </div>
 
                 <?php
                 }
-                echo '<button class="btn btn-success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>';
+                echo '<button class="btn btn--success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>';
                 ?>
             </div>
         </div>

public/main/admin/dashboard_add_users_to_user.php

@@ -331,7 +331,7 @@ if (STUDENT_BOSS != $userStatus) {
 $actionsRight = Display::url(
     '<em class="fa fa-search"></em> '.get_lang('Advanced search'),
     '#',
-    ['class' => 'btn btn-default advanced_options', 'id' => 'advanced_search']
+    ['class' => 'btn btn--plain advanced_options', 'id' => 'advanced_search']
 );
 
 $toolbar = Display::toolbarAction('toolbar-dashboard', [$actionsLeft, $actionsRight]);
@@ -458,18 +458,18 @@ $result = Database::query($sql);
         <?php if ($ajax_search) {
                             ?>
             <div class="separate-action">
-                <button class="btn btn-primary" type="button" onclick="remove_item(document.getElementById('destination'))"></button>
+                <button class="btn btn--primary" type="button" onclick="remove_item(document.getElementById('destination'))"></button>
             </div>
         <?php
                         } else {
                             ?>
             <div class="separate-action">
-                <button id="add_user_button" class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
+                <button id="add_user_button" class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))" onclick="moveItem(document.getElementById('origin'), document.getElementById('destination'))">
                 <em class="fa fa-chevron-right"></em>
             </button>
             </div>
             <div class="separate-action">
-                <button id="remove_user_button" class="btn btn-primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
+                <button id="remove_user_button" class="btn btn--primary" type="button" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))" onclick="moveItem(document.getElementById('destination'), document.getElementById('origin'))">
                 <em class="fa fa-chevron-left"></em>
                 </button>
             </div>
@@ -477,7 +477,7 @@ $result = Database::query($sql);
                         } ?>
             <div class="separate-action">
         <?php
-        echo '<button id="assign_user" class="btn btn-success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>';
+        echo '<button id="assign_user" class="btn btn--success" type="button" value="" onclick="valide()" >'.$tool_name.'</button>';
         ?>
             </div>
         </div>

public/main/admin/extra_field_list.php

@@ -25,7 +25,7 @@ foreach ($types as $key => $label) {
         Display::url(
             get_lang('List'),
             $url.''.$label,
-            ['class' => 'btn btn-default']
+            ['class' => 'btn btn--plain']
         )
     );
     $row++;

public/main/admin/languages.php

@@ -135,7 +135,7 @@ $htmlHeadXtra[] = '<script>
                 var action = datos.split(":")[0];
                 if (action && action == "confirm") {
                     var id = datos.split(":")[1];
-                    var sure = "<div class=\"warning-message alert alert-warning\">'.get_lang('There are users using this language. Do you want to disable this language and set all this users with the default portal language?').'<br /><br /><a href=\"languages.php?action=make_unavailable_confirmed&id="+id+"\" class=\"btn btn-default\"><em class=\"fa fa-eye\"></em> '.get_lang('Make unavailable').'</a></div>";
+                    var sure = "<div class=\"warning-message alert alert-warning\">'.get_lang('There are users using this language. Do you want to disable this language and set all this users with the default portal language?').'<br /><br /><a href=\"languages.php?action=make_unavailable_confirmed&id="+id+"\" class=\"btn btn--plain\"><em class=\"fa fa-eye\"></em> '.get_lang('Make unavailable').'</a></div>";
                     $("#id_content_message").html(sure);
                     $("html, body").animate({ scrollTop: 0 }, 200);
 				}
@@ -268,7 +268,7 @@ Display::addFlash(Display::return_message(get_lang('Chamilo Portal LanguagesExpl
 // including the header file (which includes the banner itself)
 Display::display_header($tool_name);
 
-echo '<a id="disable_all_except_default" href="javascript:void(0)" class="btn btn-primary">
+echo '<a id="disable_all_except_default" href="javascript:void(0)" class="btn btn--primary">
 <em class="fa fa-eye"></em> '.get_lang('Disable all languages except the platform default').'</a><br /><br />';
 
 // selecting all the languages
@@ -292,7 +292,7 @@ while ($row = Database::fetch_array($result_select)) {
             <input type="hidden" name="edit_id" value="'.$id.'" />
             <input type="text" name="txt_name" value="'.$row['original_name'].'" />
             <input type="checkbox" '.$checked.'name="platformlanguage" id="platformlanguage" value="'.$row['english_name'].'" />
-            <label for="platformlanguage">'.$row['original_name'].' '.get_lang('as platformlanguage').'</label> 
+            <label for="platformlanguage">'.$row['original_name'].' '.get_lang('as platformlanguage').'</label>
             <input type="submit" name="Submit" value="'.get_lang('Validate').'" />
             <a name="value" />';
     } else {

public/main/admin/legal_add.php

@@ -169,9 +169,9 @@ if (isset($_POST['language'])) {
     // Submit & preview button
     $buttons = '<div class="row" align="center">
                 <div class="formw">
-                <button type="submit" class="btn btn-default back" 	 name="send" value="back">'.get_lang('Back').'</button>
+                <button type="submit" class="btn btn--plain back" 	 name="send" value="back">'.get_lang('Back').'</button>
-                <button type="submit" class="btn btn-default search" name="send" value="preview">'.get_lang('Preview').'</button>
+                <button type="submit" class="btn btn--plain search" name="send" value="preview">'.get_lang('Preview').'</button>
-                <button type="submit" class="btn btn-primary save" 	 name="send" value="save">'.get_lang('Save').'</button>
+                <button type="submit" class="btn btn--primary save" 	 name="send" value="save">'.get_lang('Save').'</button>
                 </div>
             </div>';
     $form->addElement('html', $buttons);

public/main/admin/questions.php

@@ -210,7 +210,7 @@ if ($formSent) {
                 get_lang('Delete'),
                 $deleteUrl,
                 [
-                    'class' => 'btn btn-danger',
+                    'class' => 'btn btn--danger',
                     'onclick' => 'javascript: if(!confirm(\''.$warningText.'\')) return false',
                 ]
             ).'</div>';

public/main/admin/settings.lib.php

@@ -106,13 +106,13 @@ function handleRegions()
     }
     echo '</table>';
     echo '<br />';
-    echo '<button class="btn btn-success" type="submit" name="submit_plugins">'.get_lang('Enable the selected plugins').'</button></form>';
+    echo '<button class="btn btn--success" type="submit" name="submit_plugins">'.get_lang('Enable the selected plugins').'</button></form>';
 }
 
 function handleExtensions()
 {
     echo Display::page_subheader(get_lang('Configure extensions'));
-    echo '<a class="btn btn-success" href="configure_extensions.php?display=ppt2lp" role="button">'.get_lang('Chamilo RAPID').'</a>';
+    echo '<a class="btn btn--success" href="configure_extensions.php?display=ppt2lp" role="button">'.get_lang('Chamilo RAPID').'</a>';
 }
 
 /**
@@ -197,12 +197,12 @@ function handlePlugins()
                 $pluginRow .= Display::url(
                     '<em class="fa fa-cogs"></em> '.get_lang('Configure'),
                     'configure_plugin.php?name='.$pluginName,
-                    ['class' => 'btn btn-primary']
+                    ['class' => 'btn btn--primary']
                 );
                 $pluginRow .= Display::url(
                     '<em class="fa fa-th-large"></em> '.get_lang('Regions'),
                     'settings.php?category=Regions&name='.$pluginName,
-                    ['class' => 'btn btn-primary']
+                    ['class' => 'btn btn--primary']
                 );
             }
 
@@ -250,7 +250,7 @@ function handlePlugins()
     echo '</table>';
 
     echo '<div class="form-actions bottom_actions">';
-    echo '<button class="btn btn-primary" type="submit" name="submit_plugins">';
+    echo '<button class="btn btn--primary" type="submit" name="submit_plugins">';
     echo '<i class="fa fa-check" aria-hidden="true"></i> ';
     echo get_lang('Enable the selected plugins').'</button>';
     echo '</div>';
@@ -1875,7 +1875,7 @@ function generateCSSDownloadLink($style)
         $url = api_get_path(WEB_CODE_PATH).'course_info/download.php?archive_path=&archive='.str_replace(api_get_path(SYS_ARCHIVE_PATH), '', $arch);
 
         //@TODO: use more generic script to download.
-        $str = '<a class="btn btn-primary btn-large" href="'.$url.'">'.get_lang('Download the file').'</a>';
+        $str = '<a class="btn btn--primary btn-large" href="'.$url.'">'.get_lang('Download the file').'</a>';
         echo Display::return_message($str, 'normal', false);
     } else {
         echo Display::return_message(get_lang('The file was not found'), 'warning');

public/main/admin/special_exports.php

@@ -122,7 +122,7 @@ if ((isset($_POST['action']) && 'course_select_form' == $_POST['action']) ||
 
 if ($export && $name) {
     echo Display::return_message(get_lang('The backup has been created. The download of this file will start in a few moments. If your download does not start, click the following link'), 'confirm');
-    echo '<br /><a class="btn btn-default" href="'.api_get_path(WEB_CODE_PATH).'course_info/download.php?archive_path=&archive='.urlencode($name).'">'.get_lang('Download').'</a>';
+    echo '<br /><a class="btn btn--plain" href="'.api_get_path(WEB_CODE_PATH).'course_info/download.php?archive_path=&archive='.urlencode($name).'">'.get_lang('Download').'</a>';
 } else {
     // Display forms especial export
     if (isset($_POST['backup_option']) && 'select_items' == $_POST['backup_option']) {
@@ -266,7 +266,7 @@ function fullexportspecial()
             $query_session = Database::query($sql);
             while ($rows_session = Database::fetch_assoc($query_session)) {
                 $session_id = $rows_session['id'];
-                $sql_session_doc = "SELECT path 
+                $sql_session_doc = "SELECT path
                     FROM $tbl_document AS docs, $tbl_property AS props
                     WHERE props.tool='".TOOL_DOCUMENT."'
                         AND docs.id=props.ref

public/main/admin/statistics/index.php

@@ -407,9 +407,9 @@ switch ($report) {
 
             $content .= Display::page_subheader2(get_lang('GeneralStats'));
             // Coach.
-            $sql = "SELECT COUNT(DISTINCT(sru.user_id)) count 
+            $sql = "SELECT COUNT(DISTINCT(sru.user_id)) count
                     FROM $tableSession s
-                    INNER JOIN $tableSessionRelUser sru 
+                    INNER JOIN $tableSessionRelUser sru
                     ON s.id = sru.session_id
                     WHERE
                         (s.display_start_date BETWEEN '$start' AND '$end' OR
@@ -588,7 +588,7 @@ switch ($report) {
             $link = Display::url(
                 Display::return_icon('excel.png').' '.get_lang('ExportAsXLS'),
                 $url,
-                ['class' => 'btn btn-default']
+                ['class' => 'btn btn--plain']
             );
         }
 

public/main/admin/sub_language.php

@@ -195,7 +195,7 @@ function search_language_term(
                         'btn|'.$parent_name_variable.'|'.$language_files_to_load_keys[$lang_file],
                         get_lang('Save'),
                         [
-                            'class' => 'save  btn btn-default btn-sm',
+                            'class' => 'save  btn btn--plain btn-sm',
                             'type' => 'button',
                             'id' => 'btnid_'.$parent_name_variable,
                         ]
@@ -271,7 +271,7 @@ function search_language_term(
                         'btn|'.$name_variable.'|'.$language_files_to_load_keys[$lang_file],
                         get_lang('Save'),
                         [
-                            'class' => 'save btn btn-default btn-sm',
+                            'class' => 'save btn btn--plain btn-sm',
                             'type' => 'button',
                             'id' => 'btnid_'.$name_variable,
                         ]
@@ -332,7 +332,7 @@ function search_language_term(
                         'btn|'.$name_variable.'|'.$language_files_to_load_keys[$lang_file],
                         get_lang('Save'),
                         [
-                            'class' => 'save btn btn-default btn-sm',
+                            'class' => 'save btn btn--plain btn-sm',
                             'type' => 'button',
                             'id' => 'btnid_'.$name_variable,
                         ]

public/main/admin/subscribe_user2course.php

@@ -286,7 +286,7 @@ if (is_array($extra_field_list)) {
             echo $extraHidden;
             echo '  ';
         }
-        echo '<input class="btn btn-primary" type="button" value="'.get_lang('Filter').'" onclick="validate_filter()" ></input>';
+        echo '<input class="btn btn--primary" type="button" value="'.get_lang('Filter').'" onclick="validate_filter()" ></input>';
         echo '<br /><br />';
     }
 }
@@ -343,7 +343,7 @@ if (is_array($extra_field_list)) {
     </select>
    </td>
    <td width="20%" valign="middle" align="center">
-    <button type="submit" class="btn btn-primary" value="<?php echo get_lang('Add to the course(s)'); ?> &gt;&gt;">
+    <button type="submit" class="btn btn--primary" value="<?php echo get_lang('Add to the course(s)'); ?> &gt;&gt;">
         <em class="fa fa-plus"></em> <?php echo get_lang('Add to the course(s)'); ?>
     </button>
    </td>

public/main/admin/user_information.php

@@ -194,13 +194,13 @@ if ('true' === api_get_setting('allow_terms_conditions')) {
         $btn = Display::url(
             get_lang('Delete legal agreement'),
             api_get_self().'?action=delete_legal&user_id='.$userId,
-            ['class' => 'btn btn-danger btn-xs']
+            ['class' => 'btn btn--danger btn-xs']
         );
     } else {
         $btn = Display::url(
             get_lang('Send legal agreement'),
             api_get_self().'?action=send_legal&user_id='.$userId,
-            ['class' => 'btn btn-primary btn-xs']
+            ['class' => 'btn btn--primary btn-xs']
         );
         $timeLegalAccept = get_lang('Not Registered');
     }

public/main/admin/user_list.php

@@ -1028,7 +1028,7 @@ $form->addButtonSearch(get_lang('Search'));
 
 $searchAdvanced = '
 <a id="advanced_params" href="javascript://"
-    class="btn btn-default advanced_options" onclick="display_advanced_search_form();">
+    class="btn btn--plain advanced_options" onclick="display_advanced_search_form();">
     <span id="img_plus_and_minus">&nbsp;
     '.Display::getMdiIcon('arrow-right-bold', 'ch-tool-icon-button', null, 16).' '.get_lang('Advanced search').'
     </span>

public/main/admin/user_move_stats.php

@@ -828,8 +828,8 @@ if (!empty($user_list)) {
                 echo $options;
                 echo '</select>';
                 echo '<br />';
-                echo '<button type="submit" class="btn btn-success" onclick="view_stat(\''.$unique_id.'\', \''.$user_id.'\');"> '.get_lang('Compare stats').'</button>';
+                echo '<button type="submit" class="btn btn--success" onclick="view_stat(\''.$unique_id.'\', \''.$user_id.'\');"> '.get_lang('Compare stats').'</button>';
-                echo '<button type="submit" class="btn btn-success" onclick="moveto(\''.$unique_id.'\', \''.$user_id.'\');"> '.get_lang('Move').'</button>';
+                echo '<button type="submit" class="btn btn--success" onclick="moveto(\''.$unique_id.'\', \''.$user_id.'\');"> '.get_lang('Move').'</button>';
                 echo '<div id ="reponse_'.$unique_id.'"></div>';
                 echo '</td>';
             }

public/main/admin/usergroup_users.php

@@ -235,10 +235,10 @@ function extra_formatter(cellvalue, options, rowObject) {
 
     if (calendarName == "") {
         return \'<a href="'.
-        api_get_path(WEB_CODE_PATH).'admin/usergroup_users.php?user_id=\'+options.rowId+\'&id='.$id.'&action=add_calendar&width=700" class="btn btn-primary ajax">'.get_lang('Add').'</a>\';
+        api_get_path(WEB_CODE_PATH).'admin/usergroup_users.php?user_id=\'+options.rowId+\'&id='.$id.'&action=add_calendar&width=700" class="btn btn--primary ajax">'.get_lang('Add').'</a>\';
     } else {
     return \' \'+calendarName+\' <a href="'.
-        api_get_path(WEB_CODE_PATH).'admin/usergroup_users.php?calendar_id=\'+calendarId+\'&user_id=\'+options.rowId+\'&id='.$id.'&action=edit_calendar&width=700" class="btn btn-primary ajax"> '.get_lang('Edit').'</a>\';
+        api_get_path(WEB_CODE_PATH).'admin/usergroup_users.php?calendar_id=\'+calendarId+\'&user_id=\'+options.rowId+\'&id='.$id.'&action=edit_calendar&width=700" class="btn btn--primary ajax"> '.get_lang('Edit').'</a>\';
     }
 
     return calendarName;

public/main/announcements/announcements.php

@@ -652,7 +652,7 @@ switch ($action) {
                 Display::url(
                     get_lang('Preview'),
                     'javascript:void(0)',
-                    ['class' => 'btn btn-default', 'id' => 'announcement_preview']
+                    ['class' => 'btn btn--plain', 'id' => 'announcement_preview']
                 ).'<div id="announcement_preview_result" style="display:none"></div>'
             );
             $form->addHtml('<div id="send_button" style="display:none">');

public/main/auth/courses.php

@@ -516,7 +516,7 @@ switch ($action) {
                             Display::getMdiIcon('external-link', 'mdi-tool-icon-button').' '.
                             get_lang('GoToCourse'),
                             $courseUrl.$course['directory'].'/index.php?id_session=0',
-                            ['class' => 'btn btn-primary']
+                            ['class' => 'btn btn--primary']
                         );
                         if (!$courseClosed && $course_unsubscribe_allowed &&
                             false === $userRegisteredInCourseAsTeacher

public/main/auth/inscription.php

@@ -770,7 +770,7 @@ if ($blockButton) {
             Display::url(
                 get_lang('Validate'),
                 'javascript:void',
-                ['class' => 'btn btn-default', 'id' => 'pre_validation']
+                ['class' => 'btn btn--plain', 'id' => 'pre_validation']
             )
         );
         $form->addHtml('<div id="final_button" style="display: none">');
@@ -1115,7 +1115,7 @@ if ($form->validate()) {
         'button' => Display::button(
             'next',
             get_lang('Next'),
-            ['class' => 'btn btn-primary btn-large']
+            ['class' => 'btn btn--primary btn-large']
         ),
         'message' => '',
         'action' => api_get_path(WEB_PATH).'user_portal.php',
@@ -1151,18 +1151,18 @@ if ($form->validate()) {
                 $formData['button'] = Display::button(
                     'next',
                     get_lang('Create a course request'),
-                    ['class' => 'btn btn-primary btn-large']
+                    ['class' => 'btn btn--primary btn-large']
                 );
             } else {
                 $formData['button'] = Display::button(
                     'next',
                     get_lang('Create a course'),
-                    ['class' => 'btn btn-primary btn-large']
+                    ['class' => 'btn btn--primary btn-large']
                 );
                 $formData['go_button'] = '&nbsp;&nbsp;<a href="'.api_get_path(WEB_PATH).'index.php'.'">'.
                     Display::span(
                         get_lang('Next'),
-                        ['class' => 'btn btn-primary btn-large']
+                        ['class' => 'btn btn--primary btn-large']
                     ).'</a>';
             }
         } else {
@@ -1175,7 +1175,7 @@ if ($form->validate()) {
             $formData['button'] = Display::button(
                 'next',
                 get_lang('Next'),
-                ['class' => 'btn btn-primary btn-large']
+                ['class' => 'btn btn--primary btn-large']
             );
         }
     }

public/main/auth/justification.php

@@ -178,13 +178,13 @@ if (!empty($userJustifications)) {
             $actions .= Display::url(
                 get_lang('Edit'),
                 api_get_self().'?a=edit_justification&justification_id='.$userJustification['id'],
-                ['class' => 'btn btn-primary']
+                ['class' => 'btn btn--primary']
             );
         }
         $actions .= ' '.Display::url(
                 get_lang('Delete'),
                 api_get_self().'?a=delete_justification&justification_id='.$userJustification['id'],
-                ['class' => 'btn btn-danger']
+                ['class' => 'btn btn--danger']
             );
         $table->setCellContents($row, $col++, $actions);
         $row++;

public/main/course_info/delete_course.php

@@ -40,7 +40,7 @@ if (isset($_GET['delete']) && 'yes' === $_GET['delete'] && $_GET['course_code']
         $message = '<h3>'.get_lang('CourseTitle').' : '.$current_course_name.'</h3>';
         $message .= '<h3>'.get_lang('CourseCode').' : '.$current_course_code.'</h3>';
         $message .= '<p>'.get_lang('CourseRegistrationCodeIncorrect').'</p>';
-        $message .= '<p><a class="btn btn-primary" href="'
+        $message .= '<p><a class="btn btn--primary" href="'
             .api_get_path(WEB_CODE_PATH)
             .'course_info/delete_course.php?'
             .api_get_cidreq()
@@ -57,9 +57,9 @@ if (isset($_GET['delete']) && 'yes' === $_GET['delete'] && $_GET['course_code']
         .'&nbsp;<input type="text" name="course_code" id="course_code"></p>';
 
     $message .= '<p>';
-    $message .= '<button class="btn btn-danger delete-course">'.get_lang('ValidateChanges').'</button>';
+    $message .= '<button class="btn btn--danger delete-course">'.get_lang('ValidateChanges').'</button>';
     $message .= '&nbsp;';
-    $message .= '<a class="btn btn-primary"href="'
+    $message .= '<a class="btn btn--primary"href="'
         .api_get_path(WEB_CODE_PATH)
         .'course_info/maintenance.php?'
         .api_get_cidreq().'">'

public/main/course_progress/index.php

@@ -609,26 +609,26 @@ switch ($action) {
                             ICON_SIZE_TINY
                         ),
                         'index.php?'.api_get_cidreq().'&action=thematic_copy&thematic_id='.$id.$params.$url_token,
-                        ['class' => 'btn btn-default']
+                        ['class' => 'btn btn--plain']
                     );
                     if (0 == api_get_session_id()) {
                         if ($thematic->getDisplayOrder() > 1) {
                             $toolbarThematic .= ' <a
-                                class="btn btn-default"
+                                class="btn btn--plain"
                                 href="'.api_get_self().'?action=moveup&'.api_get_cidreq().'&thematic_id='.$id.$params.$url_token.'">'.
                                 Display::return_icon('up.png', get_lang('Up'), '', ICON_SIZE_TINY).'</a>';
                         } else {
-                            $toolbarThematic .= '<div class="btn btn-default">'.
+                            $toolbarThematic .= '<div class="btn btn--plain">'.
                                 Display::return_icon('up_na.png', '&nbsp;', '', ICON_SIZE_TINY).'</div>';
                         }
                         //$thematic->getDisplayOrder()
                         if ($thematic->getDisplayOrder() < $max_thematic_item) {
                             $toolbarThematic .= ' <a
-                                class="btn btn-default"
+                                class="btn btn--plain"
                                 href="'.api_get_self().'?action=movedown&a'.api_get_cidreq().'&thematic_id='.$id.$params.$url_token.'">'.
                                 Display::return_icon('down.png', get_lang('down'), '', ICON_SIZE_TINY).'</a>';
                         } else {
-                            $toolbarThematic .= '<div class="btn btn-default">'.
+                            $toolbarThematic .= '<div class="btn btn--plain">'.
                                 Display::return_icon('down_na.png', '&nbsp;', '', ICON_SIZE_TINY).'</div>';
                         }
                     }
@@ -643,7 +643,7 @@ switch ($action) {
                                     'thematic_id' => $id,
                                 ]
                             ),
-                            ['class' => 'btn btn-default']
+                            ['class' => 'btn btn--plain']
                         );
                         /*$toolbarThematic .= Display::url(
                             Display::return_icon(
@@ -655,14 +655,14 @@ switch ($action) {
                             api_get_self().'?'.api_get_cidreq().$url_token.'&'.http_build_query(
                                 ['action' => 'export_single_documents', 'thematic_id' => $id]
                             ),
-                            ['class' => 'btn btn-default']
+                            ['class' => 'btn btn--plain']
                         );*/
                         $toolbarThematic .= '<a
-                            class="btn btn-default"
+                            class="btn btn--plain"
                             href="index.php?'.api_get_cidreq().'&action=thematic_edit&thematic_id='.$id.$params.$url_token.'">'
                             .Display::return_icon('edit.png', get_lang('Edit'), '', ICON_SIZE_TINY).'</a>';
                         $toolbarThematic .= '<a
-                            class="btn btn-default"
+                            class="btn btn--plain"
                             onclick="javascript:if(!confirm(\''
                             .get_lang('Are you sure you want to delete')
                             .'\')) return false;" href="index.php?'.api_get_cidreq().'&action=thematic_delete&thematic_id='

public/main/coursecopy/copy_course_session.php

@@ -136,7 +136,7 @@ function display_form()
     $html .= Display::panel($options, get_lang('Type of copy'));
 
     $html .= '<div class="form-group"><div class="col-sm-12">';
-    $html .= '<button class="btn btn-success" type="submit" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang('Please confirm your choice'), ENT_QUOTES))."'".')) return false;"><em class="fa fa-files-o"></em> '.get_lang('Copy course').'</button>';
+    $html .= '<button class="btn btn--success" type="submit" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang('Please confirm your choice'), ENT_QUOTES))."'".')) return false;"><em class="fa fa-files-o"></em> '.get_lang('Copy course').'</button>';
 
     // Add Security token
     $html .= '<input type="hidden" value="'.Security::get_token().'" name="sec_token">';

public/main/coursecopy/create_backup.php

@@ -61,7 +61,7 @@ if (Security::check_token('post') &&
     echo Display::url(
         get_lang('Download'),
         api_get_path(WEB_CODE_PATH).'course_info/download.php?archive='.$zipFile.'&'.api_get_cidreq(),
-        ['class' => 'btn btn-primary btn-large']
+        ['class' => 'btn btn--primary btn-large']
     );
 } elseif (Security::check_token('post') && 'select_items' === $backupOption) {
     // Clear token

public/main/coursecopy/import_backup.php

@@ -83,13 +83,13 @@ if (Security::check_token('post') && ('course_select_form' === $action || 'full_
         $cr->set_file_option($_POST['same_file_name_option']);
         $cr->restore();
         echo Display::return_message(get_lang('Import finished'));
-        echo '<a class="btn btn-default" href="'.api_get_course_url(api_get_course_id()).'">'.
+        echo '<a class="btn btn--plain" href="'.api_get_course_url(api_get_course_id()).'">'.
             get_lang('Course home').'</a>';
     } else {
         if (!$error) {
             echo Display::return_message(get_lang('There are no resources in backup file'), 'warning');
             echo '<a
-                class="btn btn-default"
+                class="btn btn--plain"
                 href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
         } elseif (false === $filename) {
             echo Display::return_message(
@@ -99,15 +99,15 @@ if (Security::check_token('post') && ('course_select_form' === $action || 'full_
                 'error'
             );
             echo '<a
-                class="btn btn-default"
+                class="btn btn--plain"
                 href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
         } else {
             if ('' == $filename) {
                 echo Display::return_message(get_lang('Select a backup file'), 'error');
-                echo '<a class="btn btn-default" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
+                echo '<a class="btn btn--plain" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
             } else {
                 echo Display::return_message(get_lang('Upload failed, please check maximum file size limits and folder rights.'), 'error');
-                echo '<a class="btn btn-default" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
+                echo '<a class="btn btn--plain" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
             }
         }
     }
@@ -133,10 +133,10 @@ if (Security::check_token('post') && ('course_select_form' === $action || 'full_
         CourseSelectForm::display_form($course, $hiddenFields);
     } elseif (false === $filename) {
         echo Display::return_message(get_lang('The app/cache/ directory, used by this tool, is not writeable. Please contact your platform administrator.'), 'error');
-        echo '<a class="btn btn-default" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
+        echo '<a class="btn btn--plain" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
     } else {
         echo Display::return_message(get_lang('There are no resources in backup file'), 'warning');
-        echo '<a class="btn btn-default" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
+        echo '<a class="btn btn--plain" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('Try again').'</a>';
     }
 } else {
     $user = api_get_user_info();

public/main/coursecopy/recycle_course.php

@@ -74,7 +74,7 @@ if (Security::check_token('post') && (
             echo Display::return_message(get_lang('RecycleFinished'), 'confirm');
         } else {
             $messageFailCourseCode = '<p>'.get_lang('CourseRegistrationCodeIncorrect').'</p>';
-            $messageFailCourseCode .= '<p><a class="btn btn-primary" href="'.api_get_self().'?'.api_get_cidreq().'">'.
+            $messageFailCourseCode .= '<p><a class="btn btn--primary" href="'.api_get_self().'?'.api_get_cidreq().'">'.
                 get_lang('BackToPreviousPage').
                 '</a></p>';
             echo Display::return_message($messageFailCourseCode, 'error', false);

public/main/create_course/add_course.php

@@ -410,7 +410,7 @@ if ($form->validate()) {
                     Display::url(
                         get_lang('Back to courses list'),
                         api_get_path(WEB_PATH).'user_portal.php',
-                        ['class' => 'btn btn-primary']
+                        ['class' => 'btn btn--primary']
                     ),
                     ['style' => 'float: left; margin:0px; padding: 0px;']
                 );

public/main/dashboard/block.class.php

@@ -22,7 +22,7 @@ class Block
     public function getDeleteLink(): string
     {
         global $charset;
-        $closeLink = '<a class="btn btn-danger btn-xs" onclick="javascript:if(!confirm(\''.addslashes(
+        $closeLink = '<a class="btn btn--danger btn-xs" onclick="javascript:if(!confirm(\''.addslashes(
                 api_htmlentities(
                     get_lang('Please confirm your choice'),
                     ENT_QUOTES

public/main/dropbox/dropbox_functions.inc.php

@@ -1189,8 +1189,8 @@ function feedback_form($url)
         $return .= '<textarea name="feedback" class="form-control" rows="4"></textarea>';
         $return .= '</div>';
         $return .= '<div class="col-sm-3">';
-        $return .= '<div class="pull-right"><a class="btn btn-default btn-sm" href="'.$url.'"><i class="fa fa-times" aria-hidden="true"></i></a></div>';
+        $return .= '<div class="pull-right"><a class="btn btn--plain btn-sm" href="'.$url.'"><i class="fa fa-times" aria-hidden="true"></i></a></div>';
-        $return .= '<button type="submit" class="btn btn-primary btn-sm" name="store_feedback" value="'.get_lang('Validate').'"
+        $return .= '<button type="submit" class="btn btn--primary btn-sm" name="store_feedback" value="'.get_lang('Validate').'"
                     onclick="javascript: document.form_dropbox.attributes.action.value = document.location;">'.get_lang('Add/Edit a comment to').'</button>';
         $return .= '</div>';
         $return .= '</div>';

public/main/dropbox/index.php

@@ -642,7 +642,7 @@ if ('add' != $action) {
                     $action_icons .= "<tr><td colspan=\"9\">";
                     $url = api_get_path(WEB_CODE_PATH)."dropbox/index.php?".api_get_cidreq()."&view_received_category=".$viewReceivedCategory."&view_sent_category=".$viewSentCategory."&view=".$view.'&'.$sort_params;
                     $action_icons .= feedback($dropbox_file->feedback2, $url);
-                    //$action_icons .= "<a class=\"btn btn-default\" href=\""><i class=\"fa fa-times\" aria-hidden=\"true\"></i></a>";
+                    //$action_icons .= "<a class=\"btn btn--plain\" href=\""><i class=\"fa fa-times\" aria-hidden=\"true\"></i></a>";
                     $action_icons .= "</tr>";
                 }
                 $dropbox_file_data[] = $action_icons;

public/main/dropbox/recover_dropbox_files.php

@@ -48,7 +48,7 @@ if (Database::num_rows($result)) {
                 Display::url(
                     get_lang('Recover'),
                     api_get_self().'?recover_id='.$file['id'],
-                    ['class' => 'btn btn-default']
+                    ['class' => 'btn btn--plain']
                 ),
             ];
         }

public/main/exercise/MultipleAnswerTrueFalseDegreeCertainty.php

@@ -213,9 +213,9 @@ class MultipleAnswerTrueFalseDegreeCertainty extends Question
         if (true === $objEx->edit_exercise_in_lp ||
             (empty($this->exerciseList) && empty($objEx->id))
         ) {
-            $form->addElement('submit', 'lessAnswers', get_lang('Remove answer option'), 'class="btn btn-danger minus"');
+            $form->addElement('submit', 'lessAnswers', get_lang('Remove answer option'), 'class="btn btn--danger minus"');
-            $form->addElement('submit', 'moreAnswers', get_lang('Add answer option'), 'class="btn btn-primary plus"');
+            $form->addElement('submit', 'moreAnswers', get_lang('Add answer option'), 'class="btn btn--primary plus"');
-            $form->addElement('submit', 'submitQuestion', $text, 'class = "btn btn-primary"');
+            $form->addElement('submit', 'submitQuestion', $text, 'class = "btn btn--primary"');
         }
         $renderer->setElementTemplate('{element} ', 'lessAnswers');
         $renderer->setElementTemplate('{element} ', 'submitQuestion');

public/main/exercise/UniqueAnswerImage.php

@@ -247,7 +247,7 @@ class UniqueAnswerImage extends UniqueAnswer
                     '<br><div class="form-group ">
                         <label for="question_admin_form_btn_add_img['.$i.']" class="col-sm-2 control-label"></label>
                         <div class="col-sm-8">
-                            <button class="add_img_link btn btn-info btn-sm"
+                            <button class="add_img_link btn btn--info btn-sm"
                                 name="btn_add_img['.$i.']"
                                 type="submit"
                                 id="question_admin_form_btn_add_img['.$i.']">

public/main/exercise/calculated_answer.class.php

@@ -147,7 +147,7 @@ class CalculatedAnswer extends Question
             get_lang('Formula notation'),
             api_get_path(WEB_CODE_PATH).'exercise/evalmathnotation.php',
             [
-                'class' => 'btn btn-info ajax',
+                'class' => 'btn btn--info ajax',
                 'data-title' => get_lang('Formula notation'),
                 '_target' => '_blank',
             ]

public/main/exercise/exercise.class.php

@@ -3161,7 +3161,7 @@ class Exercise
                 );
 
             $params = [
-                'class' => 'ajax btn btn-default no-close-button',
+                'class' => 'ajax btn btn--plain no-close-button',
                 'data-title' => Security::remove_XSS(get_lang('Comment')),
                 'data-size' => 'md',
                 'id' => "button_$question_id",
@@ -3197,15 +3197,15 @@ class Exercise
         if (ALL_ON_ONE_PAGE == $this->type || $nbrQuestions == $questionNum || $endReminderValue) {
             if ($this->review_answers) {
                 $label = get_lang('ReviewQuestions');
-                $class = 'btn btn-success';
+                $class = 'btn btn--success';
             } else {
                 $endTest = true;
                 $label = get_lang('End Test');
-                $class = 'btn btn-warning';
+                $class = 'btn btn--warning';
             }
         } else {
             $label = get_lang('Next question');
-            $class = 'btn btn-primary';
+            $class = 'btn btn--primary';
         }
         // used to select it with jquery
         $class .= ' question-validate-btn';
@@ -3243,7 +3243,7 @@ class Exercise
                         get_lang('Previous question'),
                         [
                             'type' => 'button',
-                            'class' => 'btn btn-default',
+                            'class' => 'btn btn--plain',
                             'data-prev' => $prev_question,
                             'data-question' => $question_id,
                         ]
@@ -3283,10 +3283,10 @@ class Exercise
 
         if ($this->review_answers) {
             $all_label = get_lang('Review selected questions');
-            $class = 'btn btn-success';
+            $class = 'btn btn--success';
         } else {
             $all_label = get_lang('End test');
-            $class = 'btn btn-warning';
+            $class = 'btn btn--warning';
         }
         // used to select it with jquery
         $class .= ' question-validate-btn';
@@ -7772,7 +7772,7 @@ class Exercise
                             Display::button(
                                 'save_now',
                                 get_lang('Save and continue'),
-                                ['type' => 'button', 'class' => 'btn btn-primary', 'data-question' => $questionId]
+                                ['type' => 'button', 'class' => 'btn btn--primary', 'data-question' => $questionId]
                             ),
                             '<span id="save_for_now_'.$questionId.'" class="exercise_save_mini_message"></span>',
                         ];
@@ -7792,7 +7792,7 @@ class Exercise
                         Display::button(
                             'save_now',
                             get_lang('Save and continue'),
-                            ['type' => 'button', 'class' => 'btn btn-primary', 'data-question' => $questionId]
+                            ['type' => 'button', 'class' => 'btn btn--primary', 'data-question' => $questionId]
                         ),
                         '<span id="save_for_now_'.$questionId.'" class="exercise_save_mini_message"></span>&nbsp;',
                     ];

public/main/exercise/exercise_question_reminder.php

@@ -171,24 +171,24 @@ if (!in_array($categoryId, $blockedCategories)) {
     $exerciseActions = ' '.Display::url(
         get_lang('GoBack'),
         'javascript://',
-        ['onclick' => 'goBack();', 'class' => 'btn btn-default']
+        ['onclick' => 'goBack();', 'class' => 'btn btn--plain']
     );
 }
 if ($objExercise->review_answers) {
     $exerciseActions .= Display::url(
         get_lang('ReviewQuestions'),
         'javascript://',
-        ['onclick' => 'reviewQuestions();', 'class' => 'btn btn-primary']
+        ['onclick' => 'reviewQuestions();', 'class' => 'btn btn--primary']
     );
     $exerciseActions .= ' '.Display::url(
         get_lang('SelectAll'),
     'javascript://',
-        ['onclick' => 'selectAll();', 'class' => 'btn btn-default']
+        ['onclick' => 'selectAll();', 'class' => 'btn btn--plain']
 );
     $exerciseActions .= ' '.Display::url(
         get_lang('UnSelectAll'),
         'javascript://',
-        ['onclick' => 'changeOptionStatus(0);', 'class' => 'btn btn-default']
+        ['onclick' => 'changeOptionStatus(0);', 'class' => 'btn btn--plain']
     );
 }
 
@@ -199,13 +199,13 @@ if (key($categoryList) === $categoryId) {
     $exerciseActions .= ' '.Display::url(
     get_lang('EndTest'),
     'javascript://',
-    ['onclick' => 'final_submit();', 'class' => 'btn btn-warning']
+    ['onclick' => 'final_submit();', 'class' => 'btn btn--warning']
     );
 } else {
     $exerciseActions .= ' '.Display::url(
         get_lang('ContinueTest'),
         'javascript://',
-        ['onclick' => 'continueExercise();', 'class' => 'btn btn-primary']
+        ['onclick' => 'continueExercise();', 'class' => 'btn btn--primary']
     );
 }
 

public/main/exercise/exercise_reminder.php

@@ -124,25 +124,25 @@ echo $objExercise->getReminderTable($question_list, $exercise_stat_info);
 $exerciseActions = Display::url(
     get_lang('Review selected questions'),
     'javascript://',
-    ['onclick' => 'review_questions();', 'class' => 'btn btn-primary']
+    ['onclick' => 'review_questions();', 'class' => 'btn btn--primary']
 );
 
 $exerciseActions .= ' '.Display::url(
     get_lang('Select all'),
     'javascript://',
-    ['onclick' => 'changeOptionStatus(1);', 'class' => 'btn btn-default']
+    ['onclick' => 'changeOptionStatus(1);', 'class' => 'btn btn--plain']
 );
 
 $exerciseActions .= ' '.Display::url(
     get_lang('UnSelect all'),
     'javascript://',
-    ['onclick' => 'changeOptionStatus(0);', 'class' => 'btn btn-default']
+    ['onclick' => 'changeOptionStatus(0);', 'class' => 'btn btn--plain']
 );
 
 $exerciseActions .= ' '.Display::url(
     get_lang('End test'),
     'javascript://',
-    ['onclick' => 'final_submit();', 'class' => 'btn btn-warning']
+    ['onclick' => 'final_submit();', 'class' => 'btn btn--warning']
 );
 
 echo Display::div('', ['class' => 'clear']);

public/main/exercise/exercise_report.php

@@ -464,7 +464,7 @@ if ($is_allowedToEdit && 'learnpath' != $origin) {
                 ['style' => 'display:none', 'id' => 'datepicker_span']
             );
         }
-        $actions .= '<a class="btn btn-default" href="question_stats.php?'.api_get_cidreq().'&id='.$exercise_id.'">'.
+        $actions .= '<a class="btn btn--plain" href="question_stats.php?'.api_get_cidreq().'&id='.$exercise_id.'">'.
             get_lang('QuestionStats').'</a>';
     }
 } else {

public/main/exercise/exercise_result.php

@@ -268,7 +268,7 @@ if (!in_array($origin, ['learnpath', 'embeddable', 'mobileapp'])) {
     $pageBottom .= Display::url(
         get_lang('Return to Course Homepage'),
         api_get_course_url(),
-        ['class' => 'btn btn-primary']
+        ['class' => 'btn btn--primary']
     );
     $pageBottom .= '</div>';
 

public/main/exercise/exercise_show.php

@@ -618,7 +618,7 @@ foreach ($questionList as $questionId) {
                 $url_name,
                 [
                     'type' => 'button',
-                    'class' => 'btn btn-default',
+                    'class' => 'btn btn--plain',
                     'onclick' => "showfck('".$name."', '".$marksname."');",
                 ]
             );

public/main/exercise/exercise_submit.php

@@ -1542,7 +1542,7 @@ if ($allowBlockCategory &&
                                     $("#global-modal").modal("hide");
                                     $("#global-modal .modal-body").html("");
                                 }
-                            }).addClass("btn btn-default").appendTo("#global-modal .modal-body .btn-group");
+                            }).addClass("btn btn--plain").appendTo("#global-modal .modal-body .btn-group");
 
                              $("<a>",{
                                 text: "'.addslashes(get_lang('EndTest')).'",
@@ -1554,7 +1554,7 @@ if ($allowBlockCategory &&
                                     save_now(questionId, urlExtra);
                                     $("#global-modal .modal-body").html("<span style=\"text-align:center\">'.addslashes($loading).addslashes(get_lang('Loading')).'</span>");
                                 }
-                            }).addClass("btn btn-primary").appendTo("#global-modal .modal-body .btn-group");
+                            }).addClass("btn btn--primary").appendTo("#global-modal .modal-body .btn-group");
                         });
                         $("#global-modal").modal("show");
                         return true;
@@ -1809,7 +1809,7 @@ if ($allowBlockCategory &&
                             get_lang('Save and continue'),
                             [
                                 'type' => 'button',
-                                'class' => 'btn btn-info',
+                                'class' => 'btn btn--info',
                                 'data-question' => $questionId,
                             ]
                         ),

public/main/exercise/export/scorm/ScormExercise.php

@@ -103,7 +103,7 @@ class ScormExercise
     {
         $button = '<input
             id="chamilo_scorm_submit"
-            class="btn btn-primary"
+            class="btn btn--primary"
             type="button"
             name="chamilo_scorm_submit"
             value="OK" />';

public/main/exercise/fill_blanks.class.php

@@ -136,8 +136,8 @@ class FillBlanks extends Question
                         fields += "<td>"+blanksWithColor+"</td>";
                         fields += "<td><input class=\"form-control\" style=\"width:60px\" value=\""+value+"\" type=\"text\" id=\"weighting["+i+"]\" name=\"weighting["+i+"]\" /></td>";
                         fields += "<td>";
-                        fields += "<input class=\"btn btn-default\" type=\"button\" value=\"-\" onclick=\"changeInputSize(-1, "+i+")\">&nbsp;";
+                        fields += "<input class=\"btn btn--plain\" type=\"button\" value=\"-\" onclick=\"changeInputSize(-1, "+i+")\">&nbsp;";
-                        fields += "<input class=\"btn btn-default\" type=\"button\" value=\"+\" onclick=\"changeInputSize(1, "+i+")\">&nbsp;";
+                        fields += "<input class=\"btn btn--plain\" type=\"button\" value=\"+\" onclick=\"changeInputSize(1, "+i+")\">&nbsp;";
                         fields += "&nbsp;&nbsp;<input class=\"sample\" id=\"samplesize["+i+"]\" data-btoa=\""+btoaValue+"\"   type=\"text\" value=\""+textValue+"\" style=\"width:"+inputSize+"px\" disabled=disabled />";
                         fields += "<input id=\"sizeofinput["+i+"]\" type=\"hidden\" value=\""+inputSize+"\" name=\"sizeofinput["+i+"]\"  />";
                         fields += "</td>";
@@ -352,7 +352,7 @@ class FillBlanks extends Question
         );
         $form->addLabel(
             null,
-            '<input type="button" onclick="updateBlanks()" value="'.get_lang('Refresh terms').'" class="btn btn-default" />'
+            '<input type="button" onclick="updateBlanks()" value="'.get_lang('Refresh terms').'" class="btn btn--plain" />'
         );
 
         $form->addHtml('<div id="blanks_weighting"></div>');

public/main/exercise/hotspot_admin.inc.php

@@ -578,24 +578,24 @@ if (isset($modifyAnswers)) {
             <div class="col-sm-12">
                 <?php if (HOT_SPOT_DELINEATION == $answerType) {
             ?>
-                    <button type="submit" class="btn btn-danger" name="lessAnswers" value="lessAnswers">
+                    <button type="submit" class="btn btn--danger" name="lessAnswers" value="lessAnswers">
                         <em class="fa fa-trash"></em> <?php echo get_lang('Less areas at risk'); ?>
                     </button>
-                    <button type="submit" class="btn btn-primary" name="moreArea to avoidAnswers" value="moreArea to avoidAnswers">
+                    <button type="submit" class="btn btn--primary" name="moreArea to avoidAnswers" value="moreArea to avoidAnswers">
                         <em class="fa fa-plus"></em> <?php echo get_lang('More areas at risk'); ?>
                     </button>
                 <?php
         } else {
             ?>
-                    <button type="submit" class="btn btn-danger" name="lessAnswers" value="lessAnswers">
+                    <button type="submit" class="btn btn--danger" name="lessAnswers" value="lessAnswers">
                         <em class="fa fa-trash"></em> <?php echo get_lang('Remove hotspot'); ?>
                     </button>
-                    <button type="submit" class="btn btn-primary" name="moreAnswers" value="moreAnswers">
+                    <button type="submit" class="btn btn--primary" name="moreAnswers" value="moreAnswers">
                         <em class="fa fa-plus"></em> <?php echo get_lang('Add hotspot'); ?>
                     </button>
                 <?php
         } ?>
-                <button type="submit" class="btn btn-primary" name="submitAnswers" value="submitAnswers">
+                <button type="submit" class="btn btn--primary" name="submitAnswers" value="submitAnswers">
                     <em class="fa fa-save"></em> <?php echo get_lang('Add this question to the test'); ?>
                 </button>
             </div>

public/main/exercise/overview.php

@@ -156,7 +156,7 @@ $exercise_url = api_get_path(WEB_CODE_PATH).'exercise/exercise_submit.php?'.
 $exercise_url_button = Display::url(
     $label,
     $exercise_url,
-    ['class' => 'btn btn-success btn-large']
+    ['class' => 'btn btn--success btn-large']
 );
 
 $btnCheck = '';
@@ -169,7 +169,7 @@ if ($quizCheckButtonEnabled) {
                 'type' => 'button',
                 'role' => 'button',
                 'id' => 'quiz-check-request-button',
-                'class' => 'btn btn-default',
+                'class' => 'btn btn--plain',
                 'data-loading-text' => get_lang('Loading'),
                 'autocomplete' => 'off',
             ]
@@ -256,7 +256,7 @@ if (!empty($attempts)) {
             get_lang('Show'),
             $attempt_url,
             [
-                'class' => $btn_class.'btn btn-default',
+                'class' => $btn_class.'btn btn--plain',
                 'data-title' => get_lang('Show'),
                 'data-size' => 'lg',
             ]
@@ -509,7 +509,7 @@ if ($quizCheckButtonEnabled) {
             btnTest.on('click', function (e) {
                 e.preventDefault();
 
-                btnTest.prop('disabled', true).removeClass('btn-success btn-danger').addClass('btn-default');
+                btnTest.prop('disabled', true).removeClass('btn--success btn--danger').addClass('btn--plain');
                 iconBtnTest.removeClass('hidden');
 
                 var txtResult = $('#quiz-check-request-text').removeClass('text-success text-danger').hide();
@@ -533,16 +533,16 @@ if ($quizCheckButtonEnabled) {
                             var xhr2IsOk = !!xhr2 && xhr2[1] === 'success' && !!xhr2[0] && 'ok' === xhr2[0];
 
                             if (xhr1IsOk && xhr2IsOk) {
-                                btnTest.removeClass('btn-default btn-danger').addClass('btn-success');
+                                btnTest.removeClass('btn--plain btn--danger').addClass('btn--success');
                                 txtResult.text(\"".get_lang('QuizBrowserCheckOK')."\").addClass('text-success').show();
                             } else {
-                                btnTest.removeClass('btn-default btn-success').addClass('btn-danger');
+                                btnTest.removeClass('btn--plain btn--success').addClass('btn--danger');
                                 txtResult.text(\"".get_lang('QuizBrowserCheckKO')."\").addClass('text-danger').show();
                             }
                         },
                         function () {
                             txtResult.text(\"".get_lang('QuizBrowserCheckKO')."\").addClass('text-danger').show();
-                            btnTest.removeClass('btn-default btn-success').addClass('btn-danger');
+                            btnTest.removeClass('btn--plain btn--success').addClass('btn--danger');
                         }
                     )
                     .always(function () {

public/main/exercise/question_admin.inc.php

@@ -22,7 +22,7 @@ if (is_object($objQuestion)) {
     // FORM CREATION
     $form = new FormValidator('question_admin_form', 'post', $action);
 
-    $class = 'btn btn-default';
+    $class = 'btn btn--plain';
     if (isset($_GET['editQuestion'])) {
         $text = get_lang('Save the question');
         $type = isset($_GET['type']) ? Security::remove_XSS($_GET['type']) : null;

public/main/exercise/question_list_admin.inc.php

@@ -200,7 +200,7 @@ if (!$inATest) {
                         ICON_SIZE_TINY
                     ),
                     api_get_self().'?'.api_get_cidreq().'&clone_question='.$id.'&page='.$page,
-                    ['class' => 'btn btn-default btn-sm']
+                    ['class' => 'btn btn--plain btn-sm']
                 );
 
                 $edit_link = CALCULATED_ANSWER == $objQuestionTmp->selectType() && $objQuestionTmp->isAnswered()
@@ -211,7 +211,7 @@ if (!$inATest) {
                             [],
                             ICON_SIZE_TINY
                         ),
-                        ['class' => 'btn btn-default btn-sm']
+                        ['class' => 'btn btn--plain btn-sm']
                     )
                     : Display::url(
                         Display::return_icon(
@@ -226,7 +226,7 @@ if (!$inATest) {
                                 'editQuestion' => $id,
                                 'page' => $page,
                             ]),
-                        ['class' => 'btn btn-default btn-sm']
+                        ['class' => 'btn btn--plain btn-sm']
                     );
                 $delete_link = null;
                 if (true == $objExercise->edit_exercise_in_lp) {
@@ -245,7 +245,7 @@ if (!$inATest) {
                             ]),
                         [
                             'id' => "delete_$id",
-                            'class' => 'delete-swal btn btn-default btn-sm',
+                            'class' => 'delete-swal btn btn--plain btn-sm',
                             'data-title' => get_lang('Are you sure you want to delete'),
                             'title' => get_lang('Delete'),
                         ]

public/main/exercise/question_pool.php

@@ -1086,19 +1086,19 @@ echo '</form>';
 $html = '<div class="btn-toolbar">';
 $html .= '<div class="btn-group">';
 $html .= '<a
-        class="btn btn-default"
+        class="btn btn--plain"
         href="?'.$url.'selectall=1"
         onclick="javascript: setCheckbox(true, \''.$tableId.'\'); return false;">
         '.get_lang('Select all').'</a>';
 $html .= '<a
-            class="btn btn-default"
+            class="btn btn--plain"
             href="?'.$url.'"
             onclick="javascript: setCheckbox(false, \''.$tableId.'\'); return false;">
             '.get_lang('Unselect all').'</a> ';
 $html .= '</div>';
 $html .= '<div class="btn-group">
-            <button class="btn btn-default" onclick="javascript:return false;">'.get_lang('Actions').'</button>
+            <button class="btn btn--plain" onclick="javascript:return false;">'.get_lang('Actions').'</button>
-            <button class="btn btn-default dropdown-toggle" data-toggle="dropdown">
+            <button class="btn btn--plain dropdown-toggle" data-toggle="dropdown">
                 <span class="caret"></span>
             </button>
             <ul class="dropdown-menu">';

public/main/exercise/result.php

@@ -152,7 +152,7 @@ $pageBottom .= Display::url(
     get_lang('Back to the attempt list'),
     api_get_path(WEB_CODE_PATH).'exercise/overview.php?exerciseId='.$exercise_id.'&'.api_get_cidreq().
     "&learnpath_id=$lpId&learnpath_item_id=$lpItemId&learnpath_item_view_id=$lpViewId",
-    ['class' => 'btn btn-primary']
+    ['class' => 'btn btn--primary']
 );
 $pageBottom .= '</div>';
 $pageContent .= $pageBottom;

public/main/forum/forumfunction.inc.php

@@ -5352,9 +5352,9 @@ function getAskRevisionButton(CForumPost $post, CForumThread $threadInfo): strin
 
     $postId = $post->getIid();
 
-    $status = 'btn-default';
+    $status = 'btn--plain';
     if (postNeedsRevision($post)) {
-        $status = 'btn-success';
+        $status = 'btn--success';
     }
 
     return Display::url(
@@ -5397,7 +5397,7 @@ function getReportButton(int $postId, CForumThread $threadInfo): string
         api_get_path(WEB_CODE_PATH).'forum/viewthread.php?'.
         api_get_cidreq().'&action=report&post_id='.$postId.
         '&forum='.$threadInfo->getForum()->getIid().'&thread='.$threadInfo->getIid(),
-        ['class' => 'btn btn-danger', 'title' => get_lang('Report')]
+        ['class' => 'btn btn--danger', 'title' => get_lang('Report')]
     );
 }
 

public/main/forum/forumqualify.php

@@ -361,13 +361,13 @@ if (api_is_allowed_to_edit() && $counter > 0) {
     echo '<h4>'.get_lang('ScoreChangesHistory').'</h4>';
     if (isset($_GET['type']) && 'false' === $_GET['type']) {
         $buttons = '<a
-            class="btn btn-default"
+            class="btn btn--plain"
             href="forumqualify.php?'.api_get_cidreq().'&forum='.$forumId.'&origin='.$origin.'&thread='.$threadId.'&user='.(int) ($_GET['user']).'&user_id='.(int) ($_GET['user_id']).'&type=true&idtextqualify='.$score.'#history">'.
-            get_lang('more recent').'</a> <a class="btn btn-default disabled" >'.get_lang('older').'</a>';
+            get_lang('more recent').'</a> <a class="btn btn--plain disabled" >'.get_lang('older').'</a>';
     } else {
-        $buttons = '<a class="btn btn-default">'.get_lang('more recent').'</a>
+        $buttons = '<a class="btn btn--plain">'.get_lang('more recent').'</a>
                         <a
-                            class="btn btn-default"
+                            class="btn btn--plain"
                             href="forumqualify.php?'.api_get_cidreq().'&forum='.$forumId.'&origin='.$origin.'&thread='.$threadId.'&user='.(int) ($_GET['user']).'&user_id='.(int) ($_GET['user_id']).'&type=false&idtextqualify='.$score.'#history">'.
             get_lang('older').'</a>';
     }

public/main/gradebook/gradebook_display_certificate.php

@@ -330,7 +330,7 @@ if (0 == count($certificate_list)) {
             $certificateUrl = Display::url(
                 get_lang('Certificate'),
                 $url,
-                ['target' => '_blank', 'class' => 'btn btn-default']
+                ['target' => '_blank', 'class' => 'btn btn--plain']
             );
             echo $certificateUrl.PHP_EOL;
 

public/main/gradebook/gradebook_display_summary.php

@@ -206,7 +206,7 @@ echo Display::page_header(get_lang('Students list report'));
 echo '<div class="btn-group">';
 if (count($userList) > 0) {
     $url = api_get_self().'?action=export_all&'.api_get_cidreq().'&selectcat='.$cat_id;
-    echo Display::url(get_lang('Export all to PDF'), $url, ['class' => 'btn btn-default']);
+    echo Display::url(get_lang('Export all to PDF'), $url, ['class' => 'btn btn--plain']);
 }
 echo '</div>';
 
@@ -236,7 +236,7 @@ if (0 == count($userList)) {
             $link = Display::url(
                 get_lang('Skills'),
                 $url,
-                ['class' => 'btn btn-default']
+                ['class' => 'btn btn--plain']
             ).'&nbsp;';
         }
 
@@ -244,14 +244,14 @@ if (0 == count($userList)) {
         $link .= Display::url(
             get_lang('Export to PDF'),
             $url,
-            ['target' => '_blank', 'class' => 'btn btn-default']
+            ['target' => '_blank', 'class' => 'btn btn--plain']
         );
         if ($allowComments) {
             $url = api_get_self().'?'.api_get_cidreq().'&action=add_comment&user_id='.$value['user_id'].'&gradebook_id='.$cat_id;
             $link .= '&nbsp;'.Display::url(
                 get_lang('AddGradebookComment'),
                 $url,
-                ['target' => '_blank', 'class' => 'ajax btn btn-default']
+                ['target' => '_blank', 'class' => 'ajax btn btn--plain']
             );
         }
         echo $link;

public/main/gradebook/gradebook_edit_all.php

@@ -311,7 +311,7 @@ echo Display::return_message($warning_message, 'warning', false);
     </table>
     <input type="hidden" name="submitted" value="1"/>
     <br/>
-    <button class="btn btn-primary" type="submit" name="name"
+    <button class="btn btn--primary" type="submit" name="name"
             value="<?php echo get_lang('Save'); ?>">
         <?php echo get_lang('Save weights in report'); ?>
     </button>

public/main/gradebook/index.php

@@ -819,7 +819,7 @@ if (!empty($selectCat)) {
                     $actionsLeft .= Display::url(
                         Display::getMdiIcon('file-pdf-box').get_lang('Download certificate in PDF'),
                         $certificate['pdf_url'],
-                        ['class' => 'btn btn-default']
+                        ['class' => 'btn btn--plain']
                     );
                 }
 
@@ -836,7 +836,7 @@ if (!api_is_allowed_to_edit(null, true)) {
         $actionsLeft .= Display::url(
             Display::getMdiIcon('file-pdf-box').get_lang('Download report in PDF'),
             api_get_self().'?action=export_table&'.api_get_cidreq().'&category_id='.$selectCat,
-            ['class' => 'btn btn-default']
+            ['class' => 'btn btn--plain']
         );
     }
 }

public/main/gradebook/lib/fe/displaygradebook.php

@@ -463,7 +463,7 @@ class DisplayGradebook
                         $actionsLeft .= Display::url(
                             get_lang('Generate custom report'),
                             api_get_path(WEB_AJAX_PATH)."gradebook.ajax.php?$my_api_cidreq&a=generate_custom_report",
-                            ['class' => 'btn btn-default ajax']
+                            ['class' => 'btn btn--plain ajax']
                         );
                     }
 

public/main/group/group_space.php

@@ -86,7 +86,7 @@ $confirmationMessage = addslashes(api_htmlentities(get_lang('Please confirm your
 $subscribe_group = '';
 if (GroupManager::is_self_registration_allowed($user_id, $groupEntity)) {
     $subscribe_group = '<a
-            class="btn btn-default"
+            class="btn btn--plain"
             href="'.api_get_self().'?selfReg=1&group_id='.$group_id.'"
             onclick="javascript: if(!confirm('."'".$confirmationMessage."'".')) return false;">'.
         get_lang('Add me to this group').
@@ -97,7 +97,7 @@ if (GroupManager::is_self_registration_allowed($user_id, $groupEntity)) {
 $unsubscribe_group = '';
 if (GroupManager::is_self_unregistration_allowed($user_id, $groupEntity)) {
     $unsubscribe_group = '<a
-        class="btn btn-default" href="'.api_get_self().'?selfUnReg=1"
+        class="btn btn--plain" href="'.api_get_self().'?selfUnReg=1"
         onclick="javascript: if(!confirm('."'".$confirmationMessage."'".')) return false;">'.
         get_lang('Unsubscribe me from this group.').'</a>';
 }

public/main/help/help.php

@@ -12,7 +12,7 @@ if (empty($help_name)) {
 }
 
 ?>
-<a class="btn btn-default" href="<?php echo api_get_path(WEB_CODE_PATH); ?>help/faq.php">
+<a class="btn btn--plain" href="<?php echo api_get_path(WEB_CODE_PATH); ?>help/faq.php">
     <?php echo get_lang('Access to the Frequently Asked Questions'); ?>
 </a>
 <div class="page-header">
@@ -20,6 +20,6 @@ if (empty($help_name)) {
 </div>
 <?php echo get_lang($help_name.'Content'); ?>
 <hr>
-<a class="btn btn-default" href="<?php echo api_get_path(WEB_CODE_PATH); ?>help/faq.php">
+<a class="btn btn--plain" href="<?php echo api_get_path(WEB_CODE_PATH); ?>help/faq.php">
     <?php echo get_lang('Access to the Frequently Asked Questions'); ?>
 </a>

public/main/inc/ajax/admin.ajax.php

@@ -113,7 +113,7 @@ function version_check()
                 get_lang('Hide campus from public platforms list');
         $return .= '</label>
             <button type="submit"
-                class="btn btn-primary btn-block"
+                class="btn btn--primary btn-block"
                 name="Register"
                 value="'.get_lang('Enable version check').'"
                 id="register" >'.get_lang('Enable version check').'</button>';

public/main/inc/ajax/extra_field.ajax.php

@@ -188,7 +188,7 @@ switch ($action) {
                 $html .= '</li>';
             }
             $html .= '</ul>';
-            $html .= Display::url(get_lang('Save'), '#', ['id' => 'link_'.$variable, 'class' => 'btn btn-primary']);
+            $html .= Display::url(get_lang('Save'), '#', ['id' => 'link_'.$variable, 'class' => 'btn btn--primary']);
             echo $html;
         }
         break;

public/main/inc/ajax/social.ajax.php

@@ -55,7 +55,7 @@ switch ($action) {
                                             <a href="profile.php?u='.$friend['friend_user_id'].'">'.$user_name.'</a>
                                         </h3>
                                         <p>
-                                            <button class="btn btn-danger" onclick="delete_friend(this)" id=img_'.$friend['friend_user_id'].'>
+                                            <button class="btn btn--danger" onclick="delete_friend(this)" id=img_'.$friend['friend_user_id'].'>
                                                 '.get_lang('Delete').'
                                             </button>
                                         </p>

public/main/inc/ajax/user_manager.ajax.php

@@ -118,7 +118,7 @@ switch ($action) {
             echo '
                 <div class="row">
                     <div class="col-sm-10 col-sm-offset-2">
-                        <a class="btn btn-primary" id="send_message_link">
+                        <a class="btn btn--primary" id="send_message_link">
                             <em class="fa fa-envelope"></em> '.get_lang('Send message').'
                         </a>
                     </div>

public/main/inc/lib/Compilatio.php

@@ -567,7 +567,7 @@ class Compilatio
                         .Display::url(
                             get_lang('Analyse'),
                             $urlRapport,
-                            ['class' => 'btn btn-primary btn-xs', 'target' => '_blank']
+                            ['class' => 'btn btn--primary btn-xs', 'target' => '_blank']
                         );
                     break;
                 case 'ANALYSE_PROCESSING':

public/main/inc/lib/CourseChatUtils.php

@@ -522,7 +522,7 @@ class CourseChatUtils
         if ($isMaster || $GLOBALS['is_session_general_coach']) {
             $history .= '
                 <div id="clear-chat">
-                    <button type="button" id="chat-reset" class="btn btn-danger btn-sm">
+                    <button type="button" id="chat-reset" class="btn btn--danger btn-sm">
                         '.get_lang('Clear the chat').'
                     </button>
                 </div>

public/main/inc/lib/CoursesAndSessionsCatalog.class.php

@@ -1066,7 +1066,7 @@ class CoursesAndSessionsCatalog
             id="plist"
             data-trigger="focus"
             tabindex="0" role="button"
-            class="btn btn-default panel_popover"
+            class="btn btn--plain panel_popover"
             data-toggle="popover"
             title="'.addslashes(get_lang('CourseTeachers')).'"
             data-html="true"
@@ -1157,7 +1157,7 @@ class CoursesAndSessionsCatalog
             Display::getMdiIcon('check').' '.$title,
             api_get_self().'?action='.$action.'&sec_token='.$stok.
             '&course_code='.$course['code'].'&search_term='.$search_term.'&category_code='.$categoryCode,
-            ['class' => 'btn btn-success btn-sm', 'title' => $title, 'aria-label' => $title]
+            ['class' => 'btn btn--success btn-sm', 'title' => $title, 'aria-label' => $title]
         );
     }
 
@@ -1185,7 +1185,7 @@ class CoursesAndSessionsCatalog
         return Display::url(
             Display::getMdiIcon('login').' '.$title,
             $url,
-            ['class' => 'btn btn-danger', 'title' => $title, 'aria-label' => $title]
+            ['class' => 'btn btn--danger', 'title' => $title, 'aria-label' => $title]
         );
     }
 
@@ -1320,7 +1320,7 @@ class CoursesAndSessionsCatalog
         return Display::div(
             $icon,
             [
-                'class' => 'btn btn-default btn-sm registered',
+                'class' => 'btn btn--plain btn-sm registered',
                 'title' => get_lang("AlreadyRegisteredToSession"),
             ]
         );

public/main/inc/lib/TicketManager.php

@@ -656,9 +656,9 @@ class TicketManager
             $form =
                 '<form action="ticket_details.php?ticket_id='.$ticketId.'" id="confirmticket" method="POST" >
                      <p>'.get_lang('Was this answer satisfactory?').'</p>
-                     <button class="btn btn-primary responseyes" name="response" id="responseyes" value="1">'.
+                     <button class="btn btn--primary responseyes" name="response" id="responseyes" value="1">'.
                 get_lang('Yes').'</button>
-                     <button class="btn btn-danger responseno" name="response" id="responseno" value="0">'.
+                     <button class="btn btn--danger responseno" name="response" id="responseno" value="0">'.
                 get_lang('No').'</button>
                  </form>';
             $content .= $form;

public/main/inc/lib/api.lib.php

@@ -1082,7 +1082,7 @@ function api_block_inactive_user()
         );
 
         $msg .= '<p class="text-center">
-                 <a class="btn btn-default" href="'.$homeUrl.'">'.get_lang('BackHome').'</a></p>';
+                 <a class="btn btn--plain" href="'.$homeUrl.'">'.get_lang('BackHome').'</a></p>';
 
         $tpl->assign('content', $msg);
         $tpl->display_one_col_template();
@@ -2965,12 +2965,12 @@ function api_is_coach($session_id = 0, $courseId = null, $check_student_view = t
     if (!empty($session_id)) {
         $sql = "SELECT DISTINCT s.id
                 FROM $session_table AS s
-                INNER JOIN $tblSessionRelUser sru 
+                INNER JOIN $tblSessionRelUser sru
                 ON s.id = sru.session_id
-                WHERE 
+                WHERE
-                    sru.user_id = $userId AND 
+                    sru.user_id = $userId AND
-                    s.id = $session_id AND 
+                    s.id = $session_id AND
-                    sru.relation_type = ".SessionEntity::GENERAL_COACH." 
+                    sru.relation_type = ".SessionEntity::GENERAL_COACH."
                 ORDER BY s.access_start_date, s.access_end_date, s.name";
         $result = Database::query($sql);
         if (!empty($sessionIsCoach)) {
@@ -3179,17 +3179,17 @@ function api_display_tool_view_option()
             // We have to remove the isStudentView=true from the $sourceurl
             $sourceurl = str_replace('&isStudentView=true', '', $sourceurl);
             $sourceurl = str_replace('&isStudentView=false', '', $sourceurl);
-            $output_string .= '<a class="btn btn-primary btn-sm" href="'.$sourceurl.'&isStudentView=false" target="_self">'.
+            $output_string .= '<a class="btn btn--primary btn-sm" href="'.$sourceurl.'&isStudentView=false" target="_self">'.
                 Display::getMdiIcon('eye').' '.get_lang('Switch to teacher view').'</a>';
         } elseif ('teacherview' == $_SESSION['studentview']) {
             // Switching to teacherview
             $sourceurl = str_replace('&isStudentView=true', '', $sourceurl);
             $sourceurl = str_replace('&isStudentView=false', '', $sourceurl);
-            $output_string .= '<a class="btn btn-default btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
+            $output_string .= '<a class="btn btn--plain btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
                 Display::getMdiIcon('eye').' '.get_lang('Switch to student view').'</a>';
         }
     } else {
-        $output_string .= '<a class="btn btn-default btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
+        $output_string .= '<a class="btn btn--plain btn-sm" href="'.$sourceurl.'&isStudentView=true" target="_self">'.
             Display::getMdiIcon('eye').' '.get_lang('Switch to student view').'</a>';
     }
     $output_string = Security::remove_XSS($output_string);

public/main/inc/lib/attendance.lib.php

@@ -2839,7 +2839,7 @@ class Attendance
                             <div class="col-md-12">';
                 if (!$is_locked_attendance || api_is_platform_admin()) {
                     if ($allowToEdit) {
-                        $form .= '<button type="submit" class="btn btn-primary">'.get_lang('Save').'</button>';
+                        $form .= '<button type="submit" class="btn btn--primary">'.get_lang('Save').'</button>';
                     }
                 }
                 $form .= '</div>

public/main/inc/lib/course.lib.php

@@ -3523,13 +3523,13 @@ class CourseManager
                 if (api_is_platform_admin()) {
                     $params['edit_actions'] .= api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course['real_id'];
                     if ($load_dirs) {
-                        $params['document'] = '<a id="document_preview_'.$courseId.'_0" class="document_preview btn btn-outline-secondary btn-sm" href="javascript:void(0);">'
+                        $params['document'] = '<a id="document_preview_'.$courseId.'_0" class="document_preview btn btn--secondary-outline btn-sm" href="javascript:void(0);">'
                            .Display::getMdiIcon('folder-open-outline').'</a>';
                         $params['document'] .= Display::div('', ['id' => 'document_result_'.$courseId.'_0', 'class' => 'document_preview_container']);
                     }
                 } else {
                     if (Course::CLOSED != $course_info['visibility'] && $load_dirs) {
-                        $params['document'] = '<a id="document_preview_'.$courseId.'_0" class="document_preview btn btn-outline-secondary btn-sm" href="javascript:void(0);">'
+                        $params['document'] = '<a id="document_preview_'.$courseId.'_0" class="document_preview btn btn--secondary-outline btn-sm" href="javascript:void(0);">'
                            .Display::getMdiIcon('folder-open-outline').'</a>';
                         $params['document'] .= Display::div('', ['id' => 'document_result_'.$courseId.'_0', 'class' => 'document_preview_container']);
                     }
@@ -3706,7 +3706,7 @@ class CourseManager
             if (api_is_platform_admin()) {
                 $params['edit_actions'] .= api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course_info['real_id'];
                 if ($load_dirs) {
-                    $params['document'] = '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview btn btn-default btn-sm" href="javascript:void(0);">'
+                    $params['document'] = '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview btn btn--plain btn-sm" href="javascript:void(0);">'
                                .Display::getMdiIcon('folder-open-outline').'</a>';
                     $params['document'] .= Display::div(
                         '',
@@ -3718,7 +3718,7 @@ class CourseManager
                 }
             }
             if ($load_dirs) {
-                $params['document'] = '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview btn btn-default btn-sm" href="javascript:void(0);">'
+                $params['document'] = '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview btn btn--plain btn-sm" href="javascript:void(0);">'
                     .Display::getMdiIcon('folder-open-outline').'</a>';
                 $params['document'] .= Display::div(
                     '',
@@ -4012,7 +4012,7 @@ class CourseManager
                 if ($load_dirs) {
                     $params['document'] .= '<a
                         id="document_preview_'.$course_info['real_id'].'_'.$session_id.'"
-                        class="document_preview btn btn-default btn-sm"
+                        class="document_preview btn btn--plain btn-sm"
                         href="javascript:void(0);">'.
                         Display::getMdiIcon('folder-open-outline').'</a>';
                     $params['document'] .= Display::div('', [
@@ -4794,7 +4794,7 @@ class CourseManager
                     api_get_path(WEB_COURSE_PATH).$course_info['path'].
                      '/index.php?action=subscribe&sec_token='.$stok,
                     [
-                        'class' => 'btn btn-success btn-sm',
+                        'class' => 'btn btn--success btn-sm',
                         'title' => get_lang('Subscribe'),
                         'aria-label' => get_lang('Subscribe'),
                     ]
@@ -4809,7 +4809,7 @@ class CourseManager
                     Display::getMdiIcon('share'),
                     api_get_path(WEB_COURSE_PATH).$course_info['path'].'/index.php',
                     [
-                        'class' => 'btn btn-default btn-sm',
+                        'class' => 'btn btn--plain btn-sm',
                         'title' => get_lang('Go to the course'),
                         'aria-label' => get_lang('Go to the course'),
                     ]
@@ -4823,7 +4823,7 @@ class CourseManager
                     api_get_path(WEB_CODE_PATH).'auth/courses.php?action=unsubscribe&unsubscribe='.$courseCode
                     .'&sec_token='.$stok.'&category_code='.$categoryCode,
                     [
-                        'class' => 'btn btn-danger btn-sm',
+                        'class' => 'btn btn--danger btn-sm',
                         'title' => get_lang('Unsubscribe'),
                         'aria-label' => get_lang('Unsubscribe'),
                     ]
@@ -5733,7 +5733,7 @@ class CourseManager
 
                 $form->addLabel(
                     '',
-                    Display::url(get_lang('Add learners'), '#', ['id' => 'add_students', 'class' => 'btn btn-primary'])
+                    Display::url(get_lang('Add learners'), '#', ['id' => 'add_students', 'class' => 'btn btn--primary'])
                 );
             }
         }
@@ -6007,7 +6007,7 @@ class CourseManager
                         $form_data['button'] = Display::button(
                             'next',
                             get_lang('Go to the course', null, $_user['language']),
-                            ['class' => 'btn btn-primary btn-large']
+                            ['class' => 'btn btn--primary btn-large']
                         );
 
                         $exercise_redirect = (int) Session::read('exercise_redirect');
@@ -6023,7 +6023,7 @@ class CourseManager
                             $form_data['button'] = Display::button(
                                 'next',
                                 get_lang('Go', null, $_user['language']),
-                                ['class' => 'btn btn-primary btn-large']
+                                ['class' => 'btn btn--primary btn-large']
                             );
                         }
 
@@ -6137,7 +6137,7 @@ class CourseManager
                 );
             } else {
                 $params['right_actions'] .=
-                    '<a class="btn btn-default btn-sm" title="'.get_lang('Edit').'" href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course['real_id'].'">'.
+                    '<a class="btn btn--plain btn-sm" title="'.get_lang('Edit').'" href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course['real_id'].'">'.
                     Display::getMdiIcon('pencil').'</a>';
             }
         } else {
@@ -6155,7 +6155,7 @@ class CourseManager
                 } else {
                     if (COURSEMANAGER == $course_info['status']) {
                         $params['right_actions'] .= '<a
-                            class="btn btn-default btn-sm" title="'.get_lang('Edit').'" href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course['real_id'].'">'.
+                            class="btn btn--plain btn-sm" title="'.get_lang('Edit').'" href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cid='.$course['real_id'].'">'.
                             Display::getMdiIcon('pencil').'</a>';
                     }
                 }
@@ -6362,7 +6362,7 @@ class CourseManager
                 Display::getMdiIcon('information'),
                 $url,
                 [
-                    'class' => "$class btn btn-default btn-sm",
+                    'class' => "$class btn btn--plain btn-sm",
                     'data-title' => $title,
                     'title' => get_lang('Description'),
                     'aria-label' => get_lang('Description'),

public/main/inc/lib/dashboard.lib.php

@@ -103,7 +103,7 @@ class DashboardManager
         echo '</table>';
         echo '<br />';
         echo '<button
-            class="btn btn-default"
+            class="btn btn--plain"
             type="submit"
             name="submit_dashboard_plugins"
             value="'.get_lang('EnableDashboard plugins').'">'.
@@ -411,13 +411,13 @@ class DashboardManager
 
             $html .= '</table>';
             $html .= '<div class="row"><div class="col-md-12">';
-            $html .= '<button class="btn btn-default" type="submit" name="submit_dashboard_list" value="'.get_lang('Enable dashboard block').'"><em class="fa fa-check-square"></em> '.
+            $html .= '<button class="btn btn--plain" type="submit" name="submit_dashboard_list" value="'.get_lang('Enable dashboard block').'"><em class="fa fa-check-square"></em> '.
                 get_lang('Enable dashboard block').'</button></form>';
             $html .= '</div></div>';
         } else {
             $html .= '<div style="margin-top:20px">'.get_lang('ThereAreNoEnabledDashboard plugins').'</div>';
             if (api_is_platform_admin()) {
-                $html .= '<a class="btn btn-default" href="'.api_get_path(WEB_CODE_PATH).'admin/settings.php?category=Plugins">'.
+                $html .= '<a class="btn btn--plain" href="'.api_get_path(WEB_CODE_PATH).'admin/settings.php?category=Plugins">'.
                     get_lang('Configure Dashboard Plugin').'</a>';
             }
         }

public/main/inc/lib/display.lib.php

@@ -2148,9 +2148,9 @@ class Display
         array $attributes = [],
         $includeText = true
     ) {
-        $buttonClass = "btn btn-outline-secondary";
+        $buttonClass = "btn btn--secondary-outline";
         if (!empty($type)) {
-            $buttonClass = "btn btn-$type";
+            $buttonClass = "btn btn--$type";
         }
         //$icon = self::tag('i', null, ['class' => "fa fa-$icon fa-fw", 'aria-hidden' => 'true']);
         $icon = self::getMdiIcon($icon);
@@ -2455,7 +2455,7 @@ HTML;
         $content .= self::url(
             '<em class="fa fa-plus"></em> '.$buttonTitle,
             $url,
-            ['class' => 'btn btn-primary']
+            ['class' => 'btn btn--primary']
         );
         $content .= '</div>';
         $content .= '</div>';

public/main/inc/lib/exercise.lib.php

@@ -1576,14 +1576,14 @@ HOTSPOT;
                                 <div class="well well-sm" id="annotation-toolbar-'.$questionId.'">
                                     <div class="btn-toolbar">
                                         <div class="btn-group" data-toggle="buttons">
-                                            <label class="btn btn-default active"
+                                            <label class="btn btn--plain active"
                                                 aria-label="'.get_lang('Add annotation path').'">
                                                 <input
                                                     type="radio" value="0"
                                                     name="'.$questionId.'-options" autocomplete="off" checked>
                                                 <span class="fas fa-pencil-alt" aria-hidden="true"></span>
                                             </label>
-                                            <label class="btn btn-default"
+                                            <label class="btn btn--plain"
                                                 aria-label="'.get_lang('Add annotation text').'">
                                                 <input
                                                     type="radio" value="1"
@@ -2400,7 +2400,7 @@ HOTSPOT;
                             get_lang('Show'),
                             $attempt_url,
                             [
-                                'class' => 'ajax btn btn-default',
+                                'class' => 'ajax btn btn--plain',
                                 'data-title' => get_lang('Show'),
                             ]
                         );

public/main/inc/lib/extra_field.lib.php

@@ -515,13 +515,13 @@ class ExtraField extends Model
                     <label for="geolocalization_extra_'.$variable.'"
                         class="col-sm-2 control-label"></label>
                     <div class="col-sm-8">
-                        <button class="btn btn-default"
+                        <button class="btn btn--plain"
                             id="geolocalization_extra_'.$variable.'"
                             name="geolocalization_extra_'.$variable.'"
                             type="submit">
                             <em class="fa fa-map-marker"></em> '.get_lang('SearchGeolocalization').'
                         </button>
-                        <button class="btn btn-default" id="myLocation_extra_'.$variable.'"
+                        <button class="btn btn--plain" id="myLocation_extra_'.$variable.'"
                             name="myLocation_extra_'.$variable.'"
                             type="submit">
                             <em class="fa fa-crosshairs"></em> '.get_lang('MyLocation').'

public/main/inc/lib/formvalidator/Element/DatePicker.php

@@ -46,10 +46,10 @@ class DatePicker extends HTML_QuickForm_text
                 <input '.$this->_getAttrString($this->_attributes).'
                     class="form-control border" type="text" value="'.$value.'" placeholder="'.get_lang('Select date ..').'" data-input>
                 <div class="ml-1" id="button-addon3">
-                    <button class="btn btn-outline-secondary"  type="button" data-toggle>
+                    <button class="btn btn--secondary-outline"  type="button" data-toggle>
                         <i class="fas fa-calendar-alt"></i>
                     </button>
-                    <button class="btn btn-outline-secondary" type="button" data-clear>
+                    <button class="btn btn--secondary-outline" type="button" data-clear>
                         <i class="fas fa-times"></i>
                     </button>
               </div>

public/main/inc/lib/formvalidator/Element/DateTimePicker.php

@@ -55,10 +55,10 @@ class DateTimePicker extends HTML_QuickForm_text
                 <input '.$this->_getAttrString($this->_attributes).'
                     class="form-control border" type="text" value="'.$value.'" placeholder="'.get_lang('Select datetime ..').'" data-input>
                 <div class="ml-1" id="button-addon3">
-                    <button class="btn btn-outline-secondary"  type="button" data-toggle>
+                    <button class="btn btn--secondary-outline"  type="button" data-toggle>
                         <i class="fas fa-calendar-alt"></i>
                     </button>
-                    <button class="btn btn-outline-secondary" type="button" data-clear>
+                    <button class="btn btn--secondary-outline" type="button" data-clear>
                         <i class="fas fa-times"></i>
                     </button>
               </div>

public/main/inc/lib/formvalidator/Element/DateTimeRangePicker.php

@@ -32,10 +32,10 @@ class DateTimeRangePicker extends DateRangePicker
                 <input '.$this->_getAttrString($this->_attributes).'
                     class="form-control" type="text" value="'.$value.'" data-input>
                 <div class="ml-1" id="button-addon3">
-                    <button class="btn btn-outline-secondary"  type="button" data-toggle>
+                    <button class="btn btn--secondary-outline"  type="button" data-toggle>
                         <i class="fas fa-calendar-alt"></i>
                     </button>
-                    <button class="btn btn-outline-secondary" type="button" data-clear>
+                    <button class="btn btn--secondary-outline" type="button" data-clear>
                         <i class="fas fa-times"></i>
                     </button>
               </div>

public/main/inc/lib/formvalidator/FormValidator.class.php

@@ -994,7 +994,7 @@ EOT;
                             <div id="'.$id.'_crop_image" class="cropCanvas">
                                 <img id="'.$id.'_preview_image">
                             </div>
-                            <button class="btn btn-primary" type="button" name="cropButton" id="'.$id.'_crop_button">
+                            <button class="btn btn--primary" type="button" name="cropButton" id="'.$id.'_crop_button">
                                 <em class="fa fa-crop"></em> '.get_lang('Crop your picture').'
                             </button>
                         </div>
@@ -1649,7 +1649,7 @@ EOT;
             <div class="description-upload">
             '.get_lang('Click on the box below to select files from your computer (you can use CTRL + clic to select various files at a time), or drag and drop some files from your desktop directly over the box below. The system will handle the rest!').'
             </div>
-            <span class="btn btn-success fileinput-button">
+            <span class="btn btn--success fileinput-button">
                 <i class="glyphicon glyphicon-plus"></i>
                 <span>'.get_lang('Add files').'</span>
                 <!-- The file input field used as target for the file upload widget -->
@@ -1840,7 +1840,7 @@ EOT;
 
             var url = '".$url."';
             var uploadButton = $('<button/>')
-                .addClass('btn btn-primary')
+                .addClass('btn btn--primary')
                 .prop('disabled', true)
                 .text('".addslashes(get_lang('Loading'))."')
                 .on('click', function () {

public/main/inc/lib/groupmanager.lib.php

@@ -2233,12 +2233,12 @@ class GroupManager
             if (!api_is_allowed_to_edit(false, true)) {
                 if (self::is_self_registration_allowed($user_id, $group)) {
                     $row[] = '<a
-                        class = "btn btn-default"
+                        class = "btn btn--plain"
                         href="group.php?'.api_get_cidreq().'&category='.$category_id.'&action=self_reg&group_id='.$groupId.'"
                         onclick="javascript:if(!confirm('."'".$confirmMessage."'".')) return false;">'.get_lang('register').'</a>';
                 } elseif (self::is_self_unregistration_allowed($user_id, $group)) {
                     $row[] = '<a
-                        class = "btn btn-default"
+                        class = "btn btn--plain"
                         href="group.php?'.api_get_cidreq().'&category='.$category_id.'&action=self_unreg&group_id='.$groupId.'"
                         onclick="javascript:if(!confirm('."'".$confirmMessage."'".')) return false;">'.get_lang('unregister').'</a>';
                 } else {

public/main/inc/lib/javascript/badge-studio/media/js/studio.js

@@ -86,7 +86,7 @@ function initGlyphSelector() {
     var glyphLog = [];
 
     $glyphSelectorButton = document.createElement('button');
-    $glyphSelectorButton.className = 'btn btn-default pull-right';
+    $glyphSelectorButton.className = 'btn btn--plain pull-right';
     $glyphSelectorButton.id = 'search-glyphs';
     $glyphSelectorButton.type = 'button';
     $glyphSelectorButton.innerHTML = '<em class="fa fa-search"></em> Search';

public/main/inc/lib/message.lib.php

@@ -42,7 +42,7 @@ class MessageManager
                     $deleteButton = Display::url(
                         get_lang('Delete'),
                         $url.'&action=delete_message&message_id='.$messageId,
-                        ['class' => 'btn btn-danger']
+                        ['class' => 'btn btn--danger']
                     );
                 }
 
@@ -750,7 +750,7 @@ class MessageManager
                             api_get_path(
                                 WEB_CODE_PATH
                             ).'social/group_topics.php?action=delete&id='.$groupId.'&topic_id='.$topic['id'],
-                            ['class' => 'btn btn-default']
+                            ['class' => 'btn btn--plain']
                         );
                 }
 
@@ -1683,7 +1683,7 @@ class MessageManager
 
         $countLikes = self::countLikesAndDislikes($messageId, $userId);
 
-        $class = $countLikes['user_liked'] ? 'btn-primary' : 'btn-default';
+        $class = $countLikes['user_liked'] ? 'btn--primary' : 'btn--plain';
 
         $btnLike = Display::button(
             'like',
@@ -1700,7 +1700,7 @@ class MessageManager
 
         $btnDislike = '';
         if (false === api_get_configuration_value('disable_dislike_option')) {
-            $disabled = $countLikes['user_disliked'] ? 'btn-danger' : 'btn-default';
+            $disabled = $countLikes['user_disliked'] ? 'btn--danger' : 'btn--plain';
 
             $btnDislike = Display::button(
                 'like',

public/main/inc/lib/pear/HTML/QuickForm/advanced_settings.php

@@ -47,7 +47,7 @@ class HTML_QuickForm_advanced_settings extends HTML_QuickForm_static
 
         $html .= '
             <div class="">
-                <button id="'.$name.'" type="button" class="btn btn-secondary advanced_options"
+                <button id="'.$name.'" type="button" class="btn btn--secondary advanced_options"
                         data-toggle="button" aria-pressed="false" autocomplete="off">
                     <em class="mr-1 mdi mdi-cog"></em> '.$label.'
                 </button>

public/main/inc/lib/pear/HTML/QuickForm/advmultiselect.php

@@ -231,8 +231,8 @@ class HTML_QuickForm_advmultiselect extends HTML_QuickForm_select
 
         // add multiple selection attribute by default if missing
         $class = '
-                block appearance-none border border-gray-200 text-gray-700 rounded leading-tight focus:outline-none 
+                block appearance-none border border-gray-200 text-gray-700 rounded leading-tight focus:outline-none
-                focus:bg-white focus:border-gray-500 w-full mt-1 overflow-auto w-full border 
+                focus:bg-white focus:border-gray-500 w-full mt-1 overflow-auto w-full border
                 bg-white rounded px-3 py-2 outline-none text-gray-700';
 
         $this->updateAttributes(['multiple' => 'multiple']);
@@ -346,7 +346,7 @@ class HTML_QuickForm_advmultiselect extends HTML_QuickForm_select
                         'name'  => 'add',
                         'value' => ' ',
                         'type'  => 'button',
-                        'class'=> 'btn btn-primary'
+                        'class'=> 'btn btn--primary'
                     );
                 } else {
                     $this->_updateAttrArray(
@@ -361,7 +361,7 @@ class HTML_QuickForm_advmultiselect extends HTML_QuickForm_select
                         'name'  => 'remove',
                         'value' => '  ',
                         'type'  => 'button',
-                        'class'=> 'btn btn-primary'
+                        'class'=> 'btn btn--primary'
                     );
                 } else {
                     $this->_updateAttrArray($this->_removeButtonAttributes,

public/main/inc/lib/pear/HTML/QuickForm/button.php

@@ -153,7 +153,7 @@ class HTML_QuickForm_button extends HTML_QuickForm_input
      */
     public function setStyle($style)
     {
-        $style = !empty($style) ? 'btn btn-'.$style : null;
+        $style = !empty($style) ? 'btn btn--'.$style : null;
         $this->style = $style;
     }
 

public/main/inc/lib/pear/HTML/QuickForm/element.php

@@ -680,7 +680,7 @@ class HTML_QuickForm_element extends HTML_Common
                             {icon}
                             {element}
                             <div class="input-group-btn">
-                                <button class="btn btn-default" type="submit">
+                                <button class="btn btn--plain" type="submit">
                                     <em class="fa fa-search"></em>
                                 </button>
                             </div>

public/main/inc/lib/social.lib.php

@@ -1851,7 +1851,7 @@ class SocialManager extends UserManager
                     );
 
                     $result['picture'] = '<img class="img-responsive" src="'.$picture.'" />';
-                    $group_actions = '<div class="group-more"><a class="btn btn-default" href="groups.php?#tab_browse-2">'.
+                    $group_actions = '<div class="group-more"><a class="btn btn--plain" href="groups.php?#tab_browse-2">'.
                         get_lang('See more').'</a></div>';
                     $group_info = '<div class="description"><p>'.cut($result['description'], 120, true)."</p></div>";
                     $myGroups[] = [
@@ -2018,7 +2018,7 @@ class SocialManager extends UserManager
                     'id' => 'message_'.$message['id'],
                     'title' => get_lang('Delete comment'),
                     'onclick' => 'deleteMessage('.$message['id'].')',
-                    'class' => 'btn btn-default',
+                    'class' => 'btn btn--plain',
                 ]
             );
 

public/main/inc/lib/sortable_table.class.php

@@ -423,12 +423,12 @@ class SortableTable extends HTML_Table
         if (count($this->form_actions) > 0) {
             $html .= '<div class="flex flex-row justify-between" role="group">';
             $html .= '<a
-                class="btn btn-primary"
+                class="btn btn--primary"
                 href="?'.$params.'&amp;'.$this->param_prefix.'selectall=1"
                 onclick="javascript: setCheckbox(true, \''.$table_id.'\'); return false;">'.
                 get_lang('Select all').'</a>';
             $html .= '<a
-                class="btn btn-primary"
+                class="btn btn--primary"
                 href="?'.$params.'"
                 onclick="javascript: setCheckbox(false, \''.$table_id.'\'); return false;">'.
                 get_lang('Deselect all').'</a> ';
@@ -797,7 +797,7 @@ class SortableTable extends HTML_Table
 
         $result[] = '</select>';
         $result[] = '<noscript>';
-        $result[] = '<button class="btn btn-success" type="submit">'.get_lang('Save').'</button>';
+        $result[] = '<button class="btn btn--success" type="submit">'.get_lang('Save').'</button>';
         $result[] = '</noscript>';
         $result[] = '</form>';
 

public/main/inc/lib/template.lib.php

@@ -1175,9 +1175,9 @@ class Template
         if ('true' == api_get_setting('accessibility_font_resize')) {
             $resize .= '<div class="resize_font">';
             $resize .= '<div class="btn-group">';
-            $resize .= '<a title="'.get_lang('Decrease the font size').'" href="#" class="decrease_font btn btn-default"><em class="fa fa-font"></em></a>';
+            $resize .= '<a title="'.get_lang('Decrease the font size').'" href="#" class="decrease_font btn btn--plain"><em class="fa fa-font"></em></a>';
-            $resize .= '<a title="'.get_lang('Reset the font size').'" href="#" class="reset_font btn btn-default"><em class="fa fa-font"></em></a>';
+            $resize .= '<a title="'.get_lang('Reset the font size').'" href="#" class="reset_font btn btn--plain"><em class="fa fa-font"></em></a>';
-            $resize .= '<a title="'.get_lang('Increase the font size').'" href="#" class="increase_font btn btn-default"><em class="fa fa-font"></em></a>';
+            $resize .= '<a title="'.get_lang('Increase the font size').'" href="#" class="increase_font btn btn--plain"><em class="fa fa-font"></em></a>';
             $resize .= '</div>';
             $resize .= '</div>';
         }