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+/*
+ * Copyright (c) 2016-2023 Martin Donath <martin.donath@squidfunk.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+import { Subject } from "rxjs"
+
+import { feature } from "~/_"
+import { h } from "~/utilities"
+
+/* ----------------------------------------------------------------------------
+ * Functions
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Retrieve location
+ *
+ * This function returns a `URL` object (and not `Location`) to normalize the
+ * typings across the application. Furthermore, locations need to be tracked
+ * without setting them and `Location` is a singleton which represents the
+ * current location.
+ *
+ * @returns URL
+ */
+export function getLocation(): URL {
+ return new URL(location.href)
+}
+
+/**
+ * Set location
+ *
+ * If instant navigation is enabled, this function creates a temporary anchor
+ * element, sets the `href` attribute, appends it to the body, clicks it, and
+ * then removes it again. The event will bubble up the DOM and trigger be
+ * intercepted by the instant loading business logic.
+ *
+ * Note that we must append and remove the anchor element, or the event will
+ * not bubble up the DOM, making it impossible to intercept it.
+ *
+ * @param url - URL to navigate to
+ * @param navigate - Force navigation
+ */
+export function setLocation(
+ url: URL | HTMLLinkElement, navigate = false
+): void {
+ if (feature("navigation.instant") && !navigate) {
+ const el = h("a", { href: url.href })
+ document.body.appendChild(el)
+ el.click()
+ el.remove()
+
+ // If we're not using instant navigation, and the page should not be reloaded
+ // just instruct the browser to navigate to the given URL
+ } else {
+ location.href = url.href
+ }
+}
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * Watch location
+ *
+ * @returns Location subject
+ */
+export function watchLocation(): Subject<URL> {
+ return new Subject<URL>()
+}