Add UIExplorer component for docs

docs/storybook/UIExplorer.js

@@ -0,0 +1,84 @@
+/* eslint-disable react/prop-types */
+
+import React from 'react';
+import { StyleSheet, Text, View } from 'react-native';
+
+/**
+ * Examples explorer
+ */
+const AppText = ({ style, ...rest }) => <Text {...rest} style={[styles.baseText, style]} />;
+const Link = ({ uri }) =>
+  <AppText accessibilityRole="link" href={uri} style={styles.link} target="_blank">
+    API documentation
+  </AppText>;
+const Title = ({ children }) => <AppText style={styles.title}>{children}</AppText>;
+const Description = ({ children }) => <AppText style={styles.description}>{children}</AppText>;
+
+const Example = ({ example: { description, render, title } }) =>
+  <View style={styles.example}>
+    <AppText style={styles.exampleTitle}>{title}</AppText>
+    {description && <AppText style={styles.exampleDescription}>{description}</AppText>}
+    {render &&
+      <View style={styles.exampleRenderBox}>
+        <AppText style={styles.exampleText}>Example</AppText>
+        <View>{render()}</View>
+      </View>}
+  </View>;
+
+const UIExplorer = ({ description, examples, title, url }) =>
+  <View style={styles.root}>
+    <Title>{title}</Title>
+    {description && <Description>{description}</Description>}
+    {url && <Link uri={url} />}
+    {examples.map((example, i) => <Example example={example} key={i} />)}
+  </View>;
+
+const styles = StyleSheet.create({
+  root: {
+    padding: '1rem',
+    flex: 1
+  },
+  baseText: {
+    fontFamily:
+      '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif, ' +
+        '"Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"', // emoji fonts
+    lineHeight: '1.3125em'
+  },
+  title: {
+    fontSize: '2rem'
+  },
+  description: {
+    color: '#657786',
+    fontSize: '1.3125rem',
+    marginTop: 'calc(0.5 * 1.3125rem)'
+  },
+  link: {
+    color: '#1B95E0',
+    marginTop: 'calc(0.5 * 1.3125rem)'
+  },
+  example: {
+    marginTop: 'calc(2 * 1.3125rem)'
+  },
+  exampleTitle: {
+    fontSize: '1.3125rem'
+  },
+  exampleDescription: {
+    fontSize: '1rem',
+    marginTop: 'calc(0.5 * 1.3125rem)'
+  },
+  exampleRenderBox: {
+    borderColor: '#E6ECF0',
+    borderWidth: 1,
+    padding: '1.3125rem',
+    marginTop: '1.3125rem'
+  },
+  exampleText: {
+    color: '#AAB8C2',
+    fontSize: '0.8rem',
+    fontWeight: 'bold',
+    marginBottom: 'calc(0.5 * 1.3125rem)',
+    textTransform: 'uppercase'
+  }
+});
+
+export default UIExplorer;