ios - popToRoot fixed #891

ios/RNNBridgeModule.m

 	[_commandsHandler popTo:containerId toContainerId:toContainerId];
 }
 
+RCT_EXPORT_METHOD(popToRoot:(NSString*)containerId) {
+	[_commandsHandler popToRoot:containerId];
+}
+
 RCT_EXPORT_METHOD(showModal:(NSDictionary*)layout) {
 	[_commandsHandler showModal:layout];
 }

ios/RNNCommandsHandler.h

 
 -(void) popTo:(NSString*)containerId toContainerId:(NSString*)toContainerId;
 
+-(void) popToRoot:(NSString*)containerId;
+
 -(void) showModal:(NSDictionary*)layout;
 
 -(void) dismissModal:(NSString*)containerId;

ios/RNNCommandsHandler.m

 	[_navigationStackManager popTo:containerId toContainerId:toContainerId];
 }
 
+-(void) popToRoot:(NSString*)containerId {
+	[self assertReady];
+	[_navigationStackManager popToRoot:containerId];
+}
+
 -(void) showModal:(NSDictionary*)layout {
 	[self assertReady];
 	UIViewController *newVc = [_controllerFactory createLayoutAndSaveToStore:layout];

ios/RNNNavigationStackManager.h

 -(void)push:(UIViewController*)newTop onTop:(NSString*)containerId;
 -(void)pop:(NSString*)containerId;
 -(void)popTo:(NSString*)containerId toContainerId:(NSString*)toContainerId;
+-(void) popToRoot:(NSString*)containerId;
 
 @end

ios/RNNNavigationStackManager.m

 	}
 }
 
+-(void) popToRoot:(NSString*)containerId {
+	UIViewController* vc = [_store findContainerForId:containerId];
+	UINavigationController* nvc = [vc navigationController];
+	[nvc popToRootViewControllerAnimated:YES];
+}
+
 @end

playground/e2e/app.test.js

     await elementByLabel('Pop To Stack Position 1').tap();
     await expect(elementByLabel('Stack Position: 1')).toBeVisible();
   });
+
+  it('pop to root', async () => {
+    await elementByLabel('Push').tap();
+    await elementByLabel('Push').tap();
+    await elementByLabel('Push').tap();
+    await elementByLabel('Pop To Root').tap();
+    await expect(elementByLabel('React Native Navigation!')).toBeVisible();
+  });
 });
 
 describe('modal', () => {

playground/src/containers/PushedScreen.js

     this.onClickPop = this.onClickPop.bind(this);
     this.onClickPopPrevious = this.onClickPopPrevious.bind(this);
     this.onClickPopToFirstPosition = this.onClickPopToFirstPosition.bind(this);
+    this.onClickPopToRoot = this.onClickPopToRoot.bind(this);
   }
   render() {
     const stackPosition = this.getStackPosition();
         <Button title="Push" onPress={this.onClickPush} />
         <Button title="Pop" onPress={this.onClickPop} />
         <Button title="Pop Previous" onPress={this.onClickPopPrevious} />
+        <Button title="Pop To Root" onPress={this.onClickPopToRoot} />
         {stackPosition > 2 && <Button title="Pop To Stack Position 1" onPress={this.onClickPopToFirstPosition} />}
         <Text style={styles.footer}>{`this.props.id = ${this.props.id}`}</Text>
       </View>
     Navigation.on(this.props.id).popTo(this.props.previousScreenIds[0]);
   }
 
+  onClickPopToRoot() {
+    Navigation.on(this.props.id).popToRoot();
+  }
+
   getStackPosition() {
     return this.props.stackPosition || 1;
   }