nativescript-vue-router-extended/router-mixin.js

import Vue from "nativescript-vue";
import { Page } from "@nativescript/core/ui/page";
export default {
    nextCallbacks: [],
    mounted() {
        if (!this.nativeView.eventsSet && this.isPage()) {
            this.nativeView.eventsSet = true;
            this.nativeView.on(Page.navigatingFromEvent, this.onNavigatingFrom.bind(this));
            this.nativeView.on(Page.navigatingToEvent, this.onNavigatingTo.bind(this));
            this.nativeView.on(Page.navigatedToEvent, this.onNavigatedTo.bind(this));
            this.nativeView.on(Page.navigatedFromEvent, this.onNavigatedFrom.bind(this));
        }
    },
    destroyed() {
        if (this.nativeView.eventsSet && this.isPage()) {
            this.nativeView.off(Page.navigatedToEvent, this.onNavigatedTo.bind(this));
            this.nativeView.off(Page.navigatingToEvent, this.onNavigatingTo.bind(this));
            this.nativeView.off(Page.navigatingFromEvent, this.onNavigatingFrom.bind(this));
            this.nativeView.off(Page.navigatedFromEvent, this.onNavigatedFrom.bind(this));
        }
    },
    methods: {
        onNavigatingFrom(data) {
            if (data.object.frame &&
                data.object.frame.parent &&
                data.object.frame.parent.modal) {
                Vue.prototype.$modalPage = {
                    data,
                    instance: this,
                };
                return;
            }
            const to = this.$router.getNewRoute();
            const from = this.$router.getCurrentRoute();
            if (this.$options.beforeRouteLeave) {
                this.$options.beforeRouteLeave.call(this, to, from, data.object.navigationContext);
            }
            if (this.$options.navigatingFrom) {
                console.warn("ROUTER", "navigatingFrom() is deprecated. Use beforeRouteLeave() instead");
                this.$options.navigatingFrom.call(this, to, from, data.object.navigationContext);
            }
        },
        onNavigatingTo(data) {
            const to = this.$router.getNewRoute();
            const from = this.$router.getCurrentRoute();
            if (this.$options.beforeRouteUpdate && to && from && to.path === from.path) {
                this.$options.beforeRouteUpdate.call(this, to, from, data.object.navigationContext);
            }
            if (to.beforeEnter && typeof to.beforeEnter === "function") {
                const next = (vmContext) => {
                    if (typeof vmContext === "undefined") {
                        return;
                    }
                    if (typeof vmContext === "function") {
                        this.$options.nextCallbacks.push(vmContext);
                    }
                };
                this.$options.beforeEnter.call(this, to, from, next, data.object.navigationContext);
            }
            if (this.$options.beforeRouteEnter) {
                const next = (vmContext) => {
                    if (typeof vmContext === "undefined") {
                        return;
                    }
                    if (typeof vmContext === "function") {
                        this.$options.nextCallbacks.push(vmContext);
                    }
                };
                this.$options.beforeRouteEnter.call(this, to, from, next, data.object.navigationContext);
            }
            this.$router.invokeBeforeResolve();
            if (this.$options.navigatingTo) {
                console.warn("ROUTER", "navigatingTo() is deprecated. Use beforeRouteEnter() instead");
                this.$options.navigatingTo.call(this, to, from, data.object.navigationContext);
            }
        },
        onNavigatedFrom(data) {
            if (this.$options.navigatedFrom) {
                console.warn("ROUTER", "navigatedFrom() is deprecated. For store state updates use meta dispatcher instead. For component state you could opt for beforeRouteLeave()");
                this.$options.navigatedFrom.call(this, data.object.navigationContext);
            }
        },
        onNavigatedTo(data) {
            this.$router.invokeAfterEach();
            this.$options.nextCallbacks.forEach((callback) => {
                callback.call(this, this, data.object.navigationContext);
            });
            this.$options.nextCallbacks.splice(0);
            if (this.$options.navigatedTo) {
                console.warn("ROUTER", 'navigatedTo() is deprecated. Use beforeRouteEnter() with "next(vm => ...)" callback instead');
                this.$options.navigatedTo.call(this, data.object.navigationContext);
            }
        },
        isPage() {
            if (this.nativeView.__vuePageRef__) {
                return true;
            }
            return false;
        },
    },
};
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