added @ttskch/select2-bootstrap4-theme and updated legacy select2 scss code

build/npm/Plugins.js

@@ -182,6 +182,10 @@ const Plugins = [
     from: 'node_modules/select2/dist/',
     to  : 'plugins/select2'
   },
+  {
+    from: 'node_modules/@ttskch/select2-bootstrap4-theme/dist/',
+    to  : 'plugins/select2-bootstrap4-theme'
+  },
   // Sparklines
   {
     from: 'node_modules/sparklines/source/',

build/scss/plugins/_select2.scss

@@ -18,108 +18,111 @@
   }
 }
 
-.select2-container--default.select2-container--open {
-  border-color: theme-color("primary");
-}
+.select2-container--default {
+  &.select2-container--open {
+    border-color: theme-color("primary");
+  }
 
-.select2-dropdown {
-  border: 1px solid $gray-x-light;
-  //border-radius: $input-radius;
-}
+  & .select2-dropdown {
+    border: 1px solid $gray-x-light;
+    //border-radius: $input-radius;
+  }
 
-.select2-container--default .select2-results__option--highlighted[aria-selected] {
-  background-color: theme-color("primary");
-  color: white;
-}
+  & .select2-results__option--highlighted[aria-selected] {
+    background-color: theme-color("primary");
+    color: white;
+  }
 
-.select2-results__option {
-  padding: 6px 12px;
-  user-select: none;
-  -webkit-user-select: none;
-}
+  & .select2-results__option {
+    padding: 6px 12px;
+    user-select: none;
+    -webkit-user-select: none;
+  }
 
-.select2-container .select2-selection--single .select2-selection__rendered {
-  padding-left: 0;
-  padding-right: 0;
-  height: auto;
-  margin-top: -3px;
-}
+  & .select2-selection--single .select2-selection__rendered {
+    padding-left: 0;
+    padding-right: 0;
+    height: auto;
+    margin-top: -3px;
+  }
 
-.select2-container[dir="rtl"] .select2-selection--single .select2-selection__rendered {
-  padding-right: 6px;
-  padding-left: 20px;
-}
+  &[dir="rtl"] .select2-selection--single .select2-selection__rendered {
+    padding-right: 6px;
+    padding-left: 20px;
+  }
 
-.select2-container--default .select2-selection--single .select2-selection__arrow {
-  height: 31px;
-  right: 6px;
-}
+  & .select2-selection--single .select2-selection__arrow {
+    height: 31px;
+    right: 6px;
+  }
 
-.select2-container--default .select2-selection--single .select2-selection__arrow b {
-  margin-top: 0;
-}
+  & .select2-selection--single .select2-selection__arrow b {
+    margin-top: 0;
+  }
 
-.select2-dropdown,
-.select2-search--inline {
-  .select2-search__field {
-    border: 1px solid $gray-x-light;
-    &:focus {
-      outline: none;
-      border: 1px solid theme-color("primary");
+  .select2-dropdown,
+  .select2-search--inline {
+    .select2-search__field {
+      border: 1px solid $gray-x-light;
+      &:focus {
+        outline: none;
+        border: 1px solid theme-color("primary");
+      }
     }
   }
-}
 
-.select2-container--default .select2-results__option[aria-disabled=true] {
-  color: #999;
-}
-
-.select2-container--default .select2-results__option[aria-selected=true] {
-  background-color: #ddd;
-  &,
-  &:hover {
-    color: #444;
+  & .select2-results__option[aria-disabled=true] {
+    color: #999;
   }
-}
 
-//Multiple select
-.select2-container--default {
-  .select2-selection--multiple {
-    min-height: $input-height;
-    border: 1px solid $gray-x-light;
-    //border-radius: $input-radius;
-    &:focus {
-      border-color: theme-color("primary");
+  & .select2-results__option[aria-selected=true] {
+    background-color: #ddd;
+    &,
+    &:hover {
+      color: #444;
     }
+  }
+
+  //Multiple select
+  & {
+    .select2-selection--multiple {
+      min-height: $input-height;
+      border: 1px solid $gray-x-light;
+      //border-radius: $input-radius;
+      &:focus {
+        border-color: theme-color("primary");
+      }
 
-    .select2-selection__rendered li:first-child.select2-search.select2-search--inline {
-      width: 100%;
+      .select2-selection__rendered li:first-child.select2-search.select2-search--inline {
+        width: 100%;
 
-      .select2-search__field {
-        width: 100% !important;
+        .select2-search__field {
+          width: 100% !important;
+        }
       }
     }
+    &.select2-container--focus .select2-selection--multiple {
+      border-color: $gray-x-light;
+    }
   }
-  &.select2-container--focus .select2-selection--multiple {
-    border-color: $gray-x-light;
+
+  & .select2-selection--multiple .select2-selection__choice {
+    background-color: theme-color("primary");
+    border-color: darken(theme-color("primary"), 5%);
+    padding: 0 10px;
+    color: $white;
   }
-}
 
-.select2-container--default .select2-selection--multiple .select2-selection__choice {
-  background-color: theme-color("primary");
-  border-color: darken(theme-color("primary"), 5%);
-  padding: 0 10px;
-  color: $white;
-}
+  & .select2-selection--multiple .select2-selection__choice__remove {
+    margin-right: 5px;
+    color: rgba(255, 255, 255, 0.7);
+    &:hover {
+      color: $white;
+    }
+  }
 
-.select2-container--default .select2-selection--multiple .select2-selection__choice__remove {
-  margin-right: 5px;
-  color: rgba(255, 255, 255, 0.7);
-  &:hover {
-    color: $white;
+  & .select2-selection--single .select2-selection__rendered li {
+    padding-right: 10px;
   }
-}
 
-.select2-container .select2-selection--single .select2-selection__rendered li {
-  padding-right: 10px;
 }

package-lock.json

@@ -2532,6 +2532,11 @@
       "resolved": "https://registry.npmjs.org/@sweetalert2/theme-bootstrap-4/-/theme-bootstrap-4-2.1.0.tgz",
       "integrity": "sha512-Ji33Ixo45EjGrGUX0Z+RqsI0X45r3NW464MigYhA9olUy4uOlwfTkumKpeudrY+tMZYDM2OP0LR9ndHBcyArbw=="
     },
+    "@ttskch/select2-bootstrap4-theme": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@ttskch/select2-bootstrap4-theme/-/select2-bootstrap4-theme-1.2.3.tgz",
+      "integrity": "sha512-cVH3yrBBmkNrkqKPvHbt8dzP7NysAQfzJULxXlzkdf7NicoSUWbpjDjDGqMtUIIldDByrf2uC1HKKFRelWunQQ=="
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",

package.json

@@ -52,6 +52,7 @@
     "@fullcalendar/timegrid": "^4.2.0",
     "@lgaitan/pace-progress": "^1.0.7",
     "@sweetalert2/theme-bootstrap-4": "^2.1.0",
+    "@ttskch/select2-bootstrap4-theme": "^1.2.3",
     "bootstrap": "^4.3.1",
     "bootstrap-colorpicker": "^3.1.2",
     "bootstrap-slider": "^10.6.1",

pages/forms/advanced.html

@@ -21,6 +21,7 @@
   <link rel="stylesheet" href="../../plugins/tempusdominus-bootstrap-4/css/tempusdominus-bootstrap-4.min.css">
   <!-- Select2 -->
   <link rel="stylesheet" href="../../plugins/select2/css/select2.min.css">
+  <link rel="stylesheet" href="../../plugins/select2-bootstrap4-theme/select2-bootstrap4.min.css">
   <!-- Bootstrap4 Duallistbox -->
   <link rel="stylesheet" href="../../plugins/bootstrap4-duallistbox/bootstrap-duallistbox.min.css">
   <!-- Theme style -->
@@ -1117,7 +1118,9 @@
 <script>
   $(function () {
     //Initialize Select2 Elements
-    $('.select2').select2()
+    $('.select2').select2({
+      theme: 'bootstrap4'
+    })
 
     //Datemask dd/mm/yyyy
     $('#datemask').inputmask('dd/mm/yyyy', { 'placeholder': 'dd/mm/yyyy' })

plugins/select2-bootstrap4-theme/select2-bootstrap4.css

@@ -0,0 +1,150 @@
+.select2-container--bootstrap4 .select2-selection--single {
+  height: calc(1.5em + 0.75rem + 2px) !important; }
+  .select2-container--bootstrap4 .select2-selection--single .select2-selection__placeholder {
+    color: #757575;
+    line-height: calc(1.5em + 0.75rem); }
+  .select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow {
+    position: absolute;
+    top: 50%;
+    right: 3px;
+    width: 20px; }
+    .select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow b {
+      top: 60%;
+      border-color: #343a40 transparent transparent transparent;
+      border-style: solid;
+      border-width: 5px 4px 0 4px;
+      width: 0;
+      height: 0;
+      left: 50%;
+      margin-left: -4px;
+      margin-top: -2px;
+      position: absolute; }
+  .select2-container--bootstrap4 .select2-selection--single .select2-selection__rendered {
+    line-height: calc(1.5em + 0.75rem); }
+
+.select2-search--dropdown .select2-search__field {
+  border: 1px solid #ced4da;
+  border-radius: 0.25rem; }
+
+.select2-results__message {
+  color: #6c757d; }
+
+.select2-container--bootstrap4 .select2-selection--multiple {
+  min-height: calc(1.5em + 0.75rem + 2px) !important; }
+  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered {
+    -webkit-box-sizing: border-box;
+            box-sizing: border-box;
+    list-style: none;
+    margin: 0;
+    padding: 0 5px;
+    width: 100%; }
+  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice {
+    color: #343a40;
+    border: 1px solid #bdc6d0;
+    border-radius: 0.2rem;
+    padding: 0;
+    padding-right: 5px;
+    cursor: pointer;
+    float: left;
+    margin-top: 0.3em;
+    margin-right: 5px; }
+  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove {
+    color: #bdc6d0;
+    font-weight: bold;
+    margin-left: 3px;
+    margin-right: 1px;
+    padding-right: 3px;
+    padding-left: 3px;
+    float: left; }
+    .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove:hover {
+      color: #343a40; }
+
+.select2-container {
+  display: block; }
+  .select2-container *:focus {
+    outline: 0; }
+
+.input-group .select2-container--bootstrap4 {
+  -webkit-box-flex: 1;
+      -ms-flex-positive: 1;
+          flex-grow: 1; }
+
+.input-group-prepend ~ .select2-container--bootstrap4 .select2-selection {
+  border-top-left-radius: 0;
+  border-bottom-left-radius: 0; }
+
+.select2-container--bootstrap4 .select2-selection {
+  border: 1px solid #ced4da;
+  border-radius: 0.25rem;
+  width: 100%; }
+
+.select2-container--bootstrap4.select2-container--focus .select2-selection {
+  border-color: #17a2b8;
+  -webkit-box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
+          box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25); }
+
+.select2-container--bootstrap4.select2-container--focus.select2-container--open .select2-selection {
+  border-bottom: none;
+  border-bottom-left-radius: 0;
+  border-bottom-right-radius: 0; }
+
+.select2-container--bootstrap4.select2-container--disabled .select2-selection, .select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-selection {
+  background-color: #e9ecef;
+  cursor: not-allowed;
+  border-color: #ced4da;
+  -webkit-box-shadow: none;
+          box-shadow: none; }
+
+.select2-container--bootstrap4.select2-container--disabled .select2-search__field, .select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-search__field {
+  background-color: transparent; }
+
+select.is-invalid ~ .select2-container--bootstrap4 .select2-selection,
+form.was-validated select:invalid ~ .select2-container--bootstrap4 .select2-selection {
+  border-color: #dc3545; }
+
+select.is-valid ~ .select2-container--bootstrap4 .select2-selection,
+form.was-validated select:valid ~ .select2-container--bootstrap4 .select2-selection {
+  border-color: #28a745; }
+
+.select2-container--bootstrap4 .select2-dropdown {
+  border-color: #ced4da;
+  border-top: none;
+  border-top-left-radius: 0;
+  border-top-right-radius: 0; }
+  .select2-container--bootstrap4 .select2-dropdown.select2-dropdown--above {
+    border-top: 1px solid #ced4da;
+    border-top-left-radius: 0.25rem;
+    border-top-right-radius: 0.25rem; }
+  .select2-container--bootstrap4 .select2-dropdown .select2-results__option[aria-selected=true] {
+    background-color: #e9ecef; }
+
+.select2-container--bootstrap4 .select2-results__option--highlighted,
+.select2-container--bootstrap4 .select2-results__option--highlighted.select2-results__option[aria-selected=true] {
+  background-color: #007bff;
+  color: #f8f9fa; }
+
+.select2-container--bootstrap4 .select2-results__option[role=group] {
+  padding: 0; }
+
+.select2-container--bootstrap4 .select2-results > .select2-results__options {
+  max-height: 15em;
+  overflow-y: auto; }
+
+.select2-container--bootstrap4 .select2-results__group {
+  padding: 6px;
+  display: list-item;
+  color: #6c757d; }
+
+.select2-container--bootstrap4 .select2-selection__clear {
+  width: 1.2em;
+  height: 1.2em;
+  line-height: 1.15em;
+  padding-left: 0.3em;
+  margin-top: 0.5em;
+  border-radius: 100%;
+  background-color: #6c757d;
+  color: #f8f9fa;
+  float: right;
+  margin-right: 0.3em; }
+  .select2-container--bootstrap4 .select2-selection__clear:hover {
+    background-color: #343a40; }