Popover – Add position on left center

demo/scripts/demo.js

@@ -8,21 +8,21 @@ document.addEventListener('DOMContentLoaded', function () {
         title: 'Before we start',
         description: 'This is just one use-case, make sure to check out the rest of the docs below.',
         nextBtnText: 'Okay, Start!',
-        position: 'bottom-right'
+        position: 'left-center'
       },
     }, {
       element: '#logo_img',
       popover: {
         title: 'Focus Anything',
         description: 'You can use it to highlight literally anything, images, text, div, span, li etc.',
-        position: 'bottom-center',
+        position: 'left-center',
       },
     }, {
       element: '#name_driver',
       popover: {
         title: 'Why Driver?',
         description: 'Because it lets you drive the user across the page',
-        position: 'bottom'
+        position: 'left-center'
       }
     }, {
       element: '#driver-demo-head',

src/core/popover.js

@@ -129,6 +129,9 @@ export default class Popover extends Element {
       case 'left':
         this.positionOnLeft(position);
         break;
+      case 'left-center':
+        this.positionOnLeftCenter(position);
+        break;
       case 'right':
         this.positionOnRight(position);
         break;
@@ -200,6 +203,32 @@ export default class Popover extends Element {
     this.tipNode.classList.add('right');
   }
 
+  /**
+   * Shows the popover on the left center of the given position
+   * @param {Position} elementPosition
+   * @private
+   */
+  positionOnLeftCenter(elementPosition) {
+    const popoverDimensions = this.getSize();
+
+    const popoverWidth = popoverDimensions.width;
+    const popoverHeight = popoverDimensions.height;
+    const popoverCenter = popoverHeight / 2;
+
+    const popoverMargin = this.options.padding + 10;  // adding 10 to give it a little distance from the element
+
+    const elementCenter = (elementPosition.bottom - elementPosition.top) / 2;
+
+    const centerPosition = (elementPosition.top - popoverCenter) + elementCenter;
+
+    this.node.style.left = `${elementPosition.left - popoverWidth - popoverMargin}px`;
+    this.node.style.top = `${centerPosition}px`;
+    this.node.style.right = '';
+    this.node.style.bottom = '';
+
+    this.tipNode.classList.add('right', 'position-center');
+  }
+
   /**
    * Shows the popover on the right of the given position
    * @param {Position} elementPosition

src/driver.scss

@@ -56,6 +56,14 @@ div#driver-popover-item {
       border-right-color: transparent;
       border-bottom-color: transparent;
       border-left-color: $popover-bg;
+
+      &.position-center {
+        top: 46%;
+      }
+
+      &.position-bottom {
+        bottom: 20px;
+      }
     }
 
     &.top {
@@ -64,14 +72,14 @@ div#driver-popover-item {
       border-right-color: transparent;
       border-bottom-color: $popover-bg;
       border-left-color: transparent;
-    }
 
-    &.position-center {
-      left: 49%;
-    }
+      &.position-center {
+        left: 49%;
+      }
 
-    &.position-right {
-      right: 20px;
+      &.position-right {
+        right: 20px;
+      }
     }
   }