added shortkey handler

frontend/src/components/submission_notes/toolbars/AnnotatedSubmissionBottomToolbar.vue

@@ -18,6 +18,7 @@
           <v-flex xs5 class="score-flex">
             <span class="mr-2">Score:</span>
             <input class="score-text-field"
+            v-shortkey="'numeric'" @shortkey="handleKeypress"
             id="score-input"
             type="number"
             step="0.5"
@@ -172,6 +173,15 @@ export default {
       } else {
         throw new Error("Can't skip submission when skippable is false for AnnotatedSubmissionBottomToolbar.")
       }
+    },
+    handleKeypress (event) {
+      // only handle keypress if nothing is focused
+      if (document.activeElement.tagName === "BODY") {
+        this.score = event.key
+        const scoreInput = document.getElementById('score-input')
+        scoreInput.scrollIntoView()
+        scoreInput.focus()
+      }
     }
   }
 }

frontend/src/main.ts

@@ -14,6 +14,8 @@ import * as Integrations from '@sentry/integrations'
 import 'vuetify/dist/vuetify.min.css'
 import 'highlight.js/styles/atom-one-light.css'
 
+import "@/util/shortkeys"
+
 Vue.use(Vuetify)
 Vue.use(Clipboard)
 Vue.use(Notifications)

frontend/src/util/shortkeys.ts

+import Vue from "vue";
+
+const shortkeyTypes = {
+  numeric: (key: string) => { return Number(key) >= 0 && Number(key) <= 9 }
+}
+
+const handlerFunc = (el: any, bind: any) => {
+  return (event: KeyboardEvent) => {
+    // handle numeric key press
+    if (bind.value === "numeric" && shortkeyTypes.numeric(event.key)) {
+      const e = new KeyboardEvent('shortkey', { bubbles: false, key: event.key })
+      el.dispatchEvent(e)
+    }
+  }
+}
+
+// add the v-shortkey directive to Vue
+// usage: <tag v-shortkey="<shortkeyType>" @shortkey="<handlerFunc>"></tag>
+Vue.directive('shortkey', {
+  bind: (el, bind) => {
+    window.addEventListener("keypress", handlerFunc(el, bind))
+  },
+  unbind: (el, bind) => {
+    window.removeEventListener("keypress", handlerFunc(el, bind))
+  }
+})
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