Refactor value rendering

app/src/components/CodeDiff.tsx

@@ -8,26 +8,25 @@ import 'prismjs/themes/prism-tomorrow.css'
 interface Props {
   previous: string
   current: string
+  language?: 'json'
   classes: any
 }
 
-interface State {
-}
-
-class CodeDiff extends React.Component<Props, State> {
+class CodeDiff extends React.Component<Props, {}> {
   constructor(props: Props) {
     super(props)
   }
 
   public render() {
     const changes = diff.diffLines(this.props.previous, this.props.current)
+
     const styledLines = Prism.highlight(this.props.current, Prism.languages.json).split('\n')
 
     let lineNumber = 0
     const code = changes.map((change, key) => {
       const hasStyledCode = change.removed !== true
       const changedLines = change.count || 0
-      if (hasStyledCode) {
+      if (hasStyledCode && this.props.language === 'json') {
         const html = styledLines.slice(lineNumber, lineNumber + changedLines).join('\n')
         lineNumber += changedLines
 
@@ -37,7 +36,11 @@ class CodeDiff extends React.Component<Props, State> {
       return <div key={key}><span className={this.cssClassForChange(change)}>{change.value}</span></div>
     })
 
-    return <pre style={{ maxHeight: '200px' }} className="language-json">{code}</pre>
+    return (
+      <pre className={`language-json ${this.props.classes.codeBlock}`}>
+        {code}
+      </pre>
+    )
   }
 
   private cssClassForChange(change: diff.Change) {
@@ -49,7 +52,7 @@ class CodeDiff extends React.Component<Props, State> {
       return this.props.classes.deletion
     }
 
-    return this.props.classes.code
+    return this.props.classes.noChange
   }
 }
 
@@ -58,10 +61,12 @@ const style = (theme: Theme) => {
     width: '100%',
   }
   return {
-    code: {
+    codeBlock: {
+      fontSize: '12px',
+      maxHeight: '200px',
+    },
+    noChange: {
       ...baseStyle,
-      // backgroundColor: theme.palette.background.paper,
-      // color: theme.palette.text.primary,
     },
     deletion: {
       ...baseStyle,