From 5f4611d65e40eae3ca6191a15f68d69ea5a1c4cb Mon Sep 17 00:00:00 2001
From: Kirill Rogovoy <kirill@rogovoy.me>
Date: Tue, 20 Jul 2021 21:24:52 +0300
Subject: WIP

---
 app_expo/components/header/header.props.ts  | 45 +++++++++++++++++++++
 app_expo/components/header/header.story.tsx | 43 ++++++++++++++++++++
 app_expo/components/header/header.tsx       | 61 +++++++++++++++++++++++++++++
 3 files changed, 149 insertions(+)
 create mode 100644 app_expo/components/header/header.props.ts
 create mode 100644 app_expo/components/header/header.story.tsx
 create mode 100644 app_expo/components/header/header.tsx

(limited to 'app_expo/components/header')

diff --git a/app_expo/components/header/header.props.ts b/app_expo/components/header/header.props.ts
new file mode 100644
index 0000000..f142656
--- /dev/null
+++ b/app_expo/components/header/header.props.ts
@@ -0,0 +1,45 @@
+import { StyleProp, TextStyle, ViewStyle } from 'react-native'
+import { IconTypes } from '../icon/icons'
+import { TxKeyPath } from '../../i18n'
+
+export interface HeaderProps {
+  /**
+   * Main header, e.g. POWERED BY IGNITE
+   */
+  headerTx?: TxKeyPath
+
+  /**
+   * header non-i18n
+   */
+  headerText?: string
+
+  /**
+   * Icon that should appear on the left
+   */
+  leftIcon?: IconTypes
+
+  /**
+   * What happens when you press the left icon
+   */
+  onLeftPress?(): void
+
+  /**
+   * Icon that should appear on the right
+   */
+  rightIcon?: IconTypes
+
+  /**
+   * What happens when you press the right icon
+   */
+  onRightPress?(): void
+
+  /**
+   * Container style overrides.
+   */
+  style?: StyleProp<ViewStyle>
+
+  /**
+   * Title style overrides.
+   */
+  titleStyle?: StyleProp<TextStyle>
+}
diff --git a/app_expo/components/header/header.story.tsx b/app_expo/components/header/header.story.tsx
new file mode 100644
index 0000000..db87b89
--- /dev/null
+++ b/app_expo/components/header/header.story.tsx
@@ -0,0 +1,43 @@
+import * as React from 'react'
+import { View, Alert } from 'react-native'
+import { storiesOf } from '@storybook/react-native'
+import { StoryScreen, Story, UseCase } from '../../../storybook/views'
+import { Header } from './header'
+import { color } from '../../theme'
+
+declare let module
+
+const VIEWSTYLE = {
+  flex: 1,
+  backgroundColor: color.storybookDarkBg,
+}
+
+storiesOf('Header', module)
+  .addDecorator((fn) => <StoryScreen>{fn()}</StoryScreen>)
+  .add('Behavior', () => (
+    <Story>
+      <UseCase noPad text="default" usage="The default usage">
+        <View style={VIEWSTYLE}>
+          <Header headerTx="demoScreen.howTo" />
+        </View>
+      </UseCase>
+      <UseCase noPad text="leftIcon" usage="A left nav icon">
+        <View style={VIEWSTYLE}>
+          <Header
+            headerTx="demoScreen.howTo"
+            leftIcon="back"
+            onLeftPress={() => Alert.alert('left nav')}
+          />
+        </View>
+      </UseCase>
+      <UseCase noPad text="rightIcon" usage="A right nav icon">
+        <View style={VIEWSTYLE}>
+          <Header
+            headerTx="demoScreen.howTo"
+            rightIcon="bullet"
+            onRightPress={() => Alert.alert('right nav')}
+          />
+        </View>
+      </UseCase>
+    </Story>
+  ))
diff --git a/app_expo/components/header/header.tsx b/app_expo/components/header/header.tsx
new file mode 100644
index 0000000..25e0914
--- /dev/null
+++ b/app_expo/components/header/header.tsx
@@ -0,0 +1,61 @@
+import React from 'react'
+import { View, ViewStyle, TextStyle } from 'react-native'
+import { HeaderProps } from './header.props'
+import { Button } from '../button/button'
+import { Text } from '../text/text'
+import { Icon } from '../icon/icon'
+import { spacing } from '../../theme'
+import { translate } from '../../i18n/'
+
+// static styles
+const ROOT: ViewStyle = {
+  flexDirection: 'row',
+  paddingHorizontal: spacing[4],
+  alignItems: 'center',
+  paddingTop: spacing[5],
+  paddingBottom: spacing[5],
+  justifyContent: 'flex-start',
+}
+const TITLE: TextStyle = { textAlign: 'center' }
+const TITLE_MIDDLE: ViewStyle = { flex: 1, justifyContent: 'center' }
+const LEFT: ViewStyle = { width: 32 }
+const RIGHT: ViewStyle = { width: 32 }
+
+/**
+ * Header that appears on many screens. Will hold navigation buttons and screen title.
+ */
+export function Header(props: HeaderProps) {
+  const {
+    onLeftPress,
+    onRightPress,
+    rightIcon,
+    leftIcon,
+    headerText,
+    headerTx,
+    style,
+    titleStyle,
+  } = props
+  const header = headerText || (headerTx && translate(headerTx)) || ''
+
+  return (
+    <View style={[ROOT, style]}>
+      {leftIcon ? (
+        <Button preset="link" onPress={onLeftPress}>
+          <Icon icon={leftIcon} />
+        </Button>
+      ) : (
+        <View style={LEFT} />
+      )}
+      <View style={TITLE_MIDDLE}>
+        <Text style={[TITLE, titleStyle]} text={header} />
+      </View>
+      {rightIcon ? (
+        <Button preset="link" onPress={onRightPress}>
+          <Icon icon={rightIcon} />
+        </Button>
+      ) : (
+        <View style={RIGHT} />
+      )}
+    </View>
+  )
+}
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