feat: add Menu component (#485)

example/src/ExampleList.js

@@ -21,6 +21,7 @@ import FABExample from './Examples/FABExample';
 import IconButtonExample from './Examples/IconButtonExample';
 import ListAccordionExample from './Examples/ListAccordionExample';
 import ListSectionExample from './Examples/ListSectionExample';
+import MenuExample from './Examples/MenuExample';
 import ProgressBarExample from './Examples/ProgressBarExample';
 import RadioButtonExample from './Examples/RadioButtonExample';
 import RadioButtonGroupExample from './Examples/RadioButtonGroupExample';
@@ -56,6 +57,7 @@ export const examples = {
   iconButton: IconButtonExample,
   listAccordion: ListAccordionExample,
   listSection: ListSectionExample,
+  menu: MenuExample,
   progressbar: ProgressBarExample,
   radio: RadioButtonExample,
   radioGroup: RadioButtonGroupExample,

example/src/Examples/MenuExample.js

@@ -0,0 +1,119 @@
+/* @flow */
+
+import * as React from 'react';
+import { View, StyleSheet, Platform } from 'react-native';
+import {
+  Menu,
+  Appbar,
+  Divider,
+  Button,
+  withTheme,
+  type Theme,
+} from 'react-native-paper';
+
+type State = {
+  visible1: boolean,
+  visible2: boolean,
+};
+
+type Props = {
+  theme: Theme,
+  navigation: any,
+};
+
+const MORE_ICON = Platform.OS === 'ios' ? 'more-horiz' : 'more-vert';
+
+class MenuExample extends React.Component<Props, State> {
+  static navigationOptions = {
+    header: null,
+  };
+
+  state = {
+    visible1: false,
+    visible2: false,
+  };
+
+  static title = 'Menu';
+
+  _openMenu1 = () => this.setState({ visible1: true });
+  _openMenu2 = () => this.setState({ visible2: true });
+
+  _closeMenu1 = () => this.setState({ visible1: false });
+  _closeMenu2 = () => this.setState({ visible2: false });
+
+  render() {
+    const {
+      theme: {
+        colors: { background },
+      },
+    } = this.props;
+
+    return (
+      <View style={styles.screen}>
+        <Appbar.Header>
+          <Appbar.BackAction onPress={() => this.props.navigation.goBack()} />
+          <Appbar.Content title="Menu" />
+          <Menu
+            visible={this.state.visible1}
+            onDismiss={this._closeMenu1}
+            anchor={
+              <Appbar.Action
+                icon={MORE_ICON}
+                color="white"
+                onPress={this._openMenu1}
+              />
+            }
+          >
+            <Menu.Item onPress={() => {}} title="Undo" />
+            <Menu.Item onPress={() => {}} title="Redo" />
+            <Divider />
+            <Menu.Item onPress={() => {}} title="Cut" disabled />
+            <Menu.Item onPress={() => {}} title="Copy" disabled />
+            <Menu.Item onPress={() => {}} title="Paste" />
+          </Menu>
+        </Appbar.Header>
+        <View style={[styles.container, { backgroundColor: background }]}>
+          <Menu
+            visible={this.state.visible2}
+            onDismiss={this._closeMenu2}
+            anchor={
+              <Button mode="outlined" onPress={this._openMenu2}>
+                Menu with icons
+              </Button>
+            }
+          >
+            <Menu.Item icon="undo" onPress={() => {}} title="Undo" />
+            <Menu.Item icon="redo" onPress={() => {}} title="Redo" />
+            <Divider />
+            <Menu.Item
+              icon="content-cut"
+              onPress={() => {}}
+              title="Cut"
+              disabled
+            />
+            <Menu.Item
+              icon="content-copy"
+              onPress={() => {}}
+              title="Copy"
+              disabled
+            />
+            <Menu.Item icon="content-paste" onPress={() => {}} title="Paste" />
+          </Menu>
+        </View>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  screen: {
+    flex: 1,
+  },
+  container: {
+    flex: 1,
+    alignItems: 'center',
+    paddingTop: 48,
+  },
+});
+
+export default withTheme(MenuExample);