Add quicklinks to hardware status page

- Renames SetFocusMixin to JumpLinkMixin to better describe what the
mixin is for: jump links like quick links and skip to main content
- Adds scrollToOffset method to JumpLinkMixin methods to scroll to
selected page elements
- Scroll offset is required to show table header below the nav header
- Setting focus is required for accessibility

Signed-off-by: Dixsie Wolmers <dixsie@ibm.com>
Change-Id: I500a2d70727c5a78aeae4a6193ba22a38e4f0b6f

3 files changed, 29 insertions, 14 deletions

diff --git a/src/components/Global/PageContainer.vue b/src/components/Global/PageContainer.vue
index c979759b..ab4adb63 100644
--- a/src/components/Global/PageContainer.vue
+++ b/src/components/Global/PageContainer.vue
@@ -5,10 +5,10 @@
 </template>
 
 <script>
-import SetFocusMixin from '@/components/Mixins/SetFocusMixin';
+import JumpLinkMixin from '@/components/Mixins/JumpLinkMixin';
 export default {
   name: 'PageContainer',
-  mixins: [SetFocusMixin],
+  mixins: [JumpLinkMixin],
   created() {
     this.$root.$on('skip-navigation', () => {
       this.setFocus(this.$el);
diff --git a/src/components/Mixins/JumpLinkMixin.js b/src/components/Mixins/JumpLinkMixin.js
new file mode 100644
index 00000000..b038527b
--- /dev/null
+++ b/src/components/Mixins/JumpLinkMixin.js
@@ -0,0 +1,27 @@
+const JumpLinkMixin = {
+  methods: {
+    setFocus(element) {
+      element.setAttribute('tabindex', '-1');
+      element.focus();
+      // Reason: https://axesslab.com/skip-links/#update-3-a-comment-from-gov-uk
+      element.removeAttribute('tabindex');
+    },
+    scrollToOffset(event) {
+      // Select element to scroll to
+      const ref = event.target.getAttribute('data-ref');
+      const element = this.$refs[ref].$el;
+
+      // Set focus and tabindex on selected element
+      this.setFocus(element);
+
+      // Set scroll offset below header
+      const offset = element.offsetTop - 50;
+      window.scroll({
+        top: offset,
+        behavior: 'smooth',
+      });
+    },
+  },
+};
+
+export default JumpLinkMixin;
diff --git a/src/components/Mixins/SetFocusMixin.js b/src/components/Mixins/SetFocusMixin.js
deleted file mode 100644
index ae3e8e0f..00000000
--- a/src/components/Mixins/SetFocusMixin.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const setFocusMixin = {
-  methods: {
-    setFocus(element) {
-      element.setAttribute('tabindex', '-1');
-      element.focus();
-      // Reason: https://axesslab.com/skip-links/#update-3-a-comment-from-gov-uk
-      element.removeAttribute('tabindex');
-    },
-  },
-};
-
-export default setFocusMixin;