Refactor #3965 - For ScrollTop

components/lib/scrolltop/BaseScrollTop.vue

@@ -0,0 +1,80 @@
+<script>
+import BaseComponent from 'primevue/basecomponent';
+import { useStyle } from 'primevue/usestyle';
+
+const styles = `
+.p-scrolltop {
+    position: fixed;
+    bottom: 20px;
+    right: 20px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.p-scrolltop-sticky {
+    position: sticky;
+}
+
+.p-scrolltop-sticky.p-link {
+    margin-left: auto;
+}
+
+.p-scrolltop-enter-from {
+    opacity: 0;
+}
+
+.p-scrolltop-enter-active {
+    transition: opacity 0.15s;
+}
+
+.p-scrolltop.p-scrolltop-leave-to {
+    opacity: 0;
+}
+
+.p-scrolltop-leave-active {
+    transition: opacity 0.15s;
+}
+`;
+
+const classes = {
+    root: ({ props }) => ['p-scrolltop p-link p-component', { 'p-scrolltop-sticky': props.target !== 'window' }],
+    icon: ({ props }) => ['p-scrolltop-icon', props.icon]
+};
+
+const { load: loadStyle } = useStyle(styles, { id: 'primevue_scrolltop_style', manual: true });
+
+export default {
+    name: 'BaseScrollTop',
+    extends: BaseComponent,
+    props: {
+        target: {
+            type: String,
+            default: 'window'
+        },
+        threshold: {
+            type: Number,
+            default: 400
+        },
+        icon: {
+            type: String,
+            default: undefined
+        },
+        behavior: {
+            type: String,
+            default: 'smooth'
+        }
+    },
+    css: {
+        classes
+    },
+    watch: {
+        isUnstyled: {
+            immediate: true,
+            handler(newValue) {
+                !newValue && loadStyle();
+            }
+        }
+    }
+};
+</script>