Separate out EditorValue component for examples (#2785)

* Separate out EditorValue component for examples

* Made it prettier

examples/components.js

@@ -19,6 +19,52 @@ export const Button = React.forwardRef(
   )
 )
 
+export const EditorValue = React.forwardRef(
+  ({ className, value, ...props }, ref) => {
+    const textLines = value.document.nodes
+      .map(node => node.text)
+      .toArray()
+      .join('\n')
+    return (
+      <div
+        ref={ref}
+        {...props}
+        className={cx(
+          className,
+          css`
+            margin: 30px -20px 0;
+          `
+        )}
+      >
+        <div
+          className={css`
+            font-size: 14px;
+            padding: 5px 20px;
+            color: #404040;
+            border-top: 2px solid #eeeeee;
+            background: #f8f8f8;
+          `}
+        >
+          Slate's value as text
+        </div>
+        <div
+          className={css`
+            color: #404040;
+            font: 12px monospace;
+            white-space: pre-wrap;
+            padding: 10px 20px;
+            div {
+              margin: 0 0 0.5em;
+            }
+          `}
+        >
+          {textLines}
+        </div>
+      </div>
+    )
+  }
+)
+
 export const Icon = React.forwardRef(({ className, ...props }, ref) => (
   <span
     {...props}

examples/composition/index.js

@@ -8,7 +8,7 @@ import splitJoin from './split-join.js'
 import insert from './insert.js'
 import special from './special.js'
 import { isKeyHotkey } from 'is-hotkey'
-import { Button, Icon, Toolbar } from '../components'
+import { Button, EditorValue, Icon, Toolbar } from '../components'
 import { ANDROID_API_VERSION } from 'slate-dev-environment'
 
 /**
@@ -73,45 +73,6 @@ const Version = props => (
   />
 )
 
-const EditorText = props => (
-  <div
-    {...props}
-    className={css`
-      color: #808080;
-      background: #f0f0f0;
-      font: 12px monospace;
-      white-space: pre-wrap;
-      margin: 1em -1em;
-      padding: 0.5em;
-
-      div {
-        margin: 0 0 0.5em;
-      }
-    `}
-  />
-)
-
-const EditorTextCaption = props => (
-  <div
-    {...props}
-    className={css`
-      color: white;
-      background: #808080;
-      padding: 0.5em;
-    `}
-  />
-)
-
-/**
- * Extract lines of text from `Value`
- *
- * @return {String[]}
- */
-
-function getTextLines(value) {
-  return value.document.nodes.map(node => node.text).toArray()
-}
-
 /**
  * Subpages which are each a smoke test.
  *
@@ -210,7 +171,7 @@ class RichTextExample extends React.Component {
   render() {
     const { text } = this.state
     if (text == null) return <Redirect to="/composition/split-join" />
-    const textLines = getTextLines(this.state.value)
+    // const textLines = getTextLines(this.state.value)
     return (
       <div>
         <Instruction>
@@ -257,12 +218,7 @@ class RichTextExample extends React.Component {
           renderBlock={this.renderBlock}
           renderMark={this.renderMark}
         />
-        <EditorText>
-          <EditorTextCaption>Text in Slate's `Value`</EditorTextCaption>
-          {textLines.map((line, index) => (
-            <div key={index}>{line.length > 0 ? line : ' '}</div>
-          ))}
-        </EditorText>
+        <EditorValue value={this.state.value} />
       </div>
     )
   }