add window location service

Author: dweber019

src/app/services/window-location.service.ts

@@ -0,0 +1,33 @@
+export class WindowLocationService {
+
+  public static changeLocation(destination: string): void {
+    window.location.assign(destination);
+  }
+
+  public static changeLocationAfterPageLoad(destination: string): void {
+    // Wait for resources to load before redirect. Without this Safari would fail
+    // to load/activate resources, like fonts.
+    const waitForPageLoad = () => {
+      if (document.readyState === 'complete') {
+        WindowLocationService.changeLocation(destination);
+      } else {
+        setTimeout(waitForPageLoad, 500);
+      }
+    };
+    waitForPageLoad();
+  }
+
+  public static getHashQueryString(): string {
+    return window.location.hash.substring(1);
+  }
+
+  public static getLocationOrigin(): string {
+    if (window.location.origin) {
+      return window.location.origin;
+    }
+    // IE11 fix, when window.location.origin is undefined
+    let locationOrigin = `${window.location.protocol}//${window.location.hostname}`;
+    locationOrigin += window.location.port ? ':' + window.location.port : '';
+    return locationOrigin;
+  }
+}