From 08e84c51f5787045372dd6061b60f52b0da38b24 Mon Sep 17 00:00:00 2001
From: Volodymyr Kozieiev <vkjr.sp@gmail.com>
Date: Wed, 5 Jun 2019 12:52:29 +0300
Subject: [PATCH] Initial commit

---
 index.js          | 83 +++++++++++++++++++++++++++++++++++++++++++++++
 package-lock.json |  5 +++
 package.json      | 17 ++++++++++
 3 files changed, 105 insertions(+)
 create mode 100644 index.js
 create mode 100644 package-lock.json
 create mode 100644 package.json

diff --git a/index.js b/index.js
new file mode 100644
index 0000000..a2c2b3d
--- /dev/null
+++ b/index.js
@@ -0,0 +1,83 @@
+import React from 'react';
+import {View} from 'react-native';
+import {
+    StackActions,
+    NavigationActions,
+    StackRouter,
+    createNavigator
+} from 'react-navigation'; // Version can be specified in package.json
+import {StackView} from 'react-navigation-stack';
+
+
+class TwoPaneNavigator extends React.Component {
+
+    LeftPaneComponent: null;
+    RightPaneEmptyComponent: null;
+
+    constructor(props) {
+        super(props);
+
+        const config = this.props.navigationConfig;
+        const router = config.router;
+
+        this.LeftPaneComponent = router.getComponentForRouteName(config.initialRouteName);
+        this.RightPaneEmptyComponent = router.getComponentForRouteName(config.emptyRightPaneName);
+    }
+
+
+    render() {
+        const {navigation, screenProps, navigationConfig, descriptors} = this.props;
+        const state = navigation.state;
+
+        let isStartScreen = state.routes[state.index].routeName == navigationConfig.initialRouteName;
+        let rightPane;
+        if (isStartScreen) {
+            rightPane = <this.RightPaneEmptyComponent navigation={navigation}/>;
+        }
+        else {
+            rightPane = <StackView navigation={navigation}
+                                   screenProps={screenProps}
+                                   navigationConfig={navigationConfig}
+                                   descriptors={descriptors}></StackView>
+        }
+
+        return (
+            <View style={{flex: 1, flexDirection: 'row'}}>
+                <View style={{width: 300, borderRightWidth: 1, marginTop: 50}}>
+                    <this.LeftPaneComponent navigation={navigation}/>
+                </View>
+                {rightPane}
+            </View>
+        );
+    }
+};
+
+function createTwoPaneNavigator(routeConfigMap, navigationConfig) {
+
+    const router = StackRouter(routeConfigMap, navigationConfig);
+    const configWithRouter = {...navigationConfig, router: router}
+
+    let twoPaneNavigator = createNavigator(TwoPaneNavigator, router, configWithRouter);
+
+    const defaultGetStateForAction = router.getStateForAction;
+    router.getStateForAction = (action: any, state: any) => {
+
+        if (action.type === NavigationActions.NAVIGATE &&
+            state.routes[state.index].routeName == navigationConfig.initialRouteName &&
+            action.routeName in routeConfigMap) {
+
+            const resetAction = StackActions.reset({
+                index: 0,
+                actions: [NavigationActions.navigate({routeName: action.routeName, params: action.params})],
+
+            });
+
+            return defaultGetStateForAction(resetAction, state);
+        }
+        return defaultGetStateForAction(action, state);
+    };
+
+    return twoPaneNavigator;
+}
+
+export {createTwoPaneNavigator};
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..3447e3d
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,5 @@
+{
+  "name": "react-native-navigation-twopane",
+  "version": "0.0.1",
+  "lockfileVersion": 1
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..70f9cd0
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "react-native-navigation-twopane",
+  "version": "0.0.1",
+  "description": "Two pane UI navigator for react-navigation",
+  "main": "./index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "peerDependencies": {
+    "@react-navigation/core": "^3.0.0",
+    "@react-navigation/native": "^3.0.0",
+    "react": "*",
+    "react-native": "*",
+    "react-navigation-stack": "~1.4.0"
+  }
+}