@nativescript/flutter/index.ios.js

Flutter for NativeScript

import { Application, Utils } from '@nativescript/core';
import { FlutterCommon } from './common';
let flutterEngineGroup;
var FlutterDelegate = /** @class */ (function (_super) {
    __extends(FlutterDelegate, _super);
    function FlutterDelegate() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    FlutterDelegate.prototype.applicationDidFinishLaunchingWithOptions = function (application, launchOptions) {
        configureFlutterEngineGroup();
        return true;
    };
    FlutterDelegate.ObjCProtocols = [UIApplicationDelegate, FlutterAppLifeCycleProvider, FlutterPluginRegistry];
    return FlutterDelegate;
}(FlutterAppDelegate));
export { FlutterDelegate };
export function configureFlutterEngineGroup() {
    flutterEngineGroup = FlutterEngineGroup.alloc().initWithNameProject('ns_flutter_engine', null);
}
export function init() {
    if (global.isIOS) {
        Application.ios.delegate = FlutterDelegate;
    }
}
export class Flutter extends FlutterCommon {
    createNativeView() {
        if (!this.id) {
            throw new Error(`Flutter requires an 'id' property set to match your Dart entry point name.`);
        }
        if (!flutterEngineGroup) {
            throw new Error(`Ensure you have called @nativescript/flutter 'init' from you main bootstrap file.`);
        }
        this._engine = flutterEngineGroup.makeEngineWithEntrypointLibraryURI(this.id, null);
        GeneratedPluginRegistrant.registerWithRegistry(this._engine);
        this._flutterViewController = FlutterViewController.alloc().initWithEngineNibNameBundle(this._engine, null, null);
        return this._flutterViewController.view;
    }
    initNativeView() {
        this._platformChannel = FlutterBasicMessageChannel.messageChannelWithNameBinaryMessengerCodec('nativescript', this._flutterViewController.binaryMessenger, FlutterStringCodec.sharedInstance());
        this._platformChannel.setMessageHandler(this._methodCallHandler.bind(this));
    }
    disposeNativeView() {
        if (this._platformChannel) {
            this._platformChannel.setMessageHandler(null);
            this._platformChannel = null;
        }
    }
    sendMessage(type, data, callback) {
        if (this._platformChannel) {
            const message = {
                type,
            };
            if (data) {
                message.data = data;
            }
            try {
                const json = JSON.stringify(message, null, 0);
                if (callback) {
                    this._platformChannel.sendMessageReply(json, (result) => {
                        this.notify({
                            eventName: Flutter.sendMessageReplyEvent,
                            object: this,
                            data: result,
                        });
                        if (callback) {
                            callback(result);
                        }
                    });
                }
                else {
                    this._platformChannel.sendMessage(json);
                }
                if (Flutter.DEBUG) {
                    console.log('NativeScript sent message to Flutter:', json);
                }
            }
            catch (err) {
                console.log('Flutter message error:', err);
            }
        }
    }
    _methodCallHandler(message, result) {
        try {
            const flutterMessage = JSON.parse(message);
            if (flutterMessage) {
                if (Flutter.DEBUG) {
                    console.log('Flutter called NativeScript with type:', flutterMessage.type);
                    console.log('data:', flutterMessage.data);
                }
                if (this.channel?.[flutterMessage.type]) {
                    this.channel[flutterMessage.type](flutterMessage.data);
                }
            }
        }
        catch (err) {
            console.log('Flutter message error:', err);
        }
    }
    onLoaded() {
        super.onLoaded();
        // we do this on onLoaded as the viewControllers are not properly setup on createNativeView
        // eslint-disable-next-line @typescript-eslint/no-this-alias
        let vcParent = this;
        while (vcParent && !vcParent.viewController) {
            vcParent = vcParent.parent;
        }
        const vc = vcParent?.viewController || Utils.ios.getRootViewController();
        if (vc) {
            vc.addChildViewController(this._flutterViewController);
            this._flutterViewController.didMoveToParentViewController(vc);
        }
    }
}
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