positioning mention popovers works now

src/components/popover/popover.js

@@ -18,8 +18,8 @@ const Popover = {
     // Takes a x/y object and tells how many pixels to offset from
     // anchor point on either axis
     offset: Object,
-    // Takes an element to use for positioning over this.$el
-    offsetElement: null,
+    // Takes a x/y/h object and tells how much to offset the anchor point
+    anchorOffset: Object,
     // Additional styles you may want for the popover container
     popoverClass: String,
     // Time in milliseconds until the popup appears, default is 100ms
@@ -49,11 +49,17 @@ const Popover = {
       // Popover will be anchored around this element, trigger ref is the container, so
       // its children are what are inside the slot. Expect only one slot="trigger".
       const anchorEl = (this.$refs.trigger && this.$refs.trigger.children[0]) || this.$el
-      const positionElement = this.offsetElement ? this.offsetElement : anchorEl
-      const screenBox = positionElement.getBoundingClientRect()
-      console.log(positionElement, screenBox)
+      const screenBox = anchorEl.getBoundingClientRect()
       // Screen position of the origin point for popover
-      const origin = { x: screenBox.left + screenBox.width * 0.5, y: screenBox.top }
+      const anchorOffset = {
+        x: (this.anchorOffset && this.anchorOffset.x) || 0,
+        y: (this.anchorOffset && this.anchorOffset.y) || 0,
+        h: (this.anchorOffset && this.anchorOffset.h) || 0
+      }
+      const origin = {
+        x: screenBox.left + screenBox.width * 0.5 + anchorOffset.x,
+        y: screenBox.top + anchorOffset.y
+      }
       const content = this.$refs.content
       // Minor optimization, don't call a slow reflow call if we don't have to
       const parentBounds = this.boundTo &&
@@ -102,21 +108,23 @@ const Popover = {
       if (origin.y - content.offsetHeight < yBounds.min) usingTop = false
 
       const yOffset = (this.offset && this.offset.y) || 0
+      const anchorHeight = anchorOffset.h || anchorEl.offsetHeight
       const translateY = usingTop
-        ? -positionElement.offsetHeight - yOffset - content.offsetHeight
-        : yOffset
+        ? -anchorEl.offsetHeight - yOffset - content.offsetHeight + anchorOffset.y
+        : -anchorEl.offsetHeight + anchorHeight + yOffset + anchorOffset.y
 
       const xOffset = (this.offset && this.offset.x) || 0
-      const translateX = (positionElement.offsetWidth * 0.5) - content.offsetWidth * 0.5 + horizOffset + xOffset
+      const translateX = (anchorEl.offsetWidth * 0.5) - content.offsetWidth * 0.5 + horizOffset + xOffset + anchorOffset.x
 
       // Note, separate translateX and translateY avoids blurry text on chromium,
       // single translate or translate3d resulted in blurry text.
       this.styles = {
         opacity: 1,
-        transform: `translateX(${Math.floor(translateX)}px) translateY(${Math.floor(translateY)}px)`
+        transform: `translateX(${Math.round(translateX)}px) translateY(${Math.round(translateY)}px)`
       }
     },
     showPopover () {
+      if (!this.$el) return
       if (this.trigger === 'hover' && !this.hovered) return
       if (this.hidden) this.$emit('show')
       this.hidden = false

src/components/status_content/status_content.js

@@ -32,7 +32,7 @@ const StatusContent = {
       // not as computed because it sets the initial state which will be changed later
       expandingSubject: !this.$store.getters.mergedConfig.collapseMessageWithSubject,
       focusedUserId: null,
-      focusedUserElement: null
+      userPopoverOffset: { x: 0, y: 0 }
     }
   },
   computed: {
@@ -190,7 +190,12 @@ const StatusContent = {
             event.stopPropagation()
             event.preventDefault()
             this.focusedUserId = attn.id
-            this.focusedUserElement = target
+            // Give the popover an offset to place it over the hovered element
+            const containerWidth = this.$refs.userPopover.$el.offsetWidth
+            const elementWidth = target.offsetWidth
+            const x = -containerWidth / 2 + target.offsetLeft + elementWidth / 2
+            const y = target.offsetTop
+            this.userPopoverOffset = { x, y, h: target.offsetHeight }
           }
         }
       }

src/components/status_content/status_content.vue

@@ -29,7 +29,10 @@
       </a>
     </div>
     <UserPopover
+      ref="userPopover"
+      class="status-user-popover"
       :user-id="focusedUserId"
+      :anchor-offset="userPopoverOffset"
     >
       <div
         :class="{'tall-status': hideTallStatus}"
@@ -142,6 +145,10 @@ $status-margin: 0.75em;
   flex: 1;
   min-width: 0;
 
+  .status-user-popover {
+    position: relative;
+  }
+
   .status-content-wrapper {
     display: flex;
     flex-direction: column;

src/components/user_popover/user_popover.js

@@ -3,7 +3,7 @@ const UserPopover = {
   name: 'UserPopover',
   props: [
     'userId',
-    'focusedElement'
+    'anchorOffset'
   ],
   data () {
     return {

src/components/user_popover/user_popover.vue

@@ -6,7 +6,7 @@
     popover-class="user-popover"
     :bound-to="{ x: 'container' }"
     :delay="200"
-    :offset-element="focusedElement"
+    :anchor-offset="anchorOffset"
     @show="enter"
   >
     <template slot="trigger">