[AAE-10533] Generic App shell for HxP applications (#8002)

* [AAE-10533] Generic App shell for HxP applications

* Clean code and add public_api for shell

lib/core/shell/src/lib/shell.module.ts

@@ -0,0 +1,81 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { CommonModule } from '@angular/common';
+import { ModuleWithProviders, NgModule } from '@angular/core';
+import { Routes, provideRoutes, RouterModule, Route } from '@angular/router';
+import { SHELL_LAYOUT_ROUTE } from './shell.routes';
+import { SidenavLayoutModule } from '@alfresco/adf-core';
+import { ExtensionsModule } from '@alfresco/adf-extensions';
+import { ShellLayoutComponent } from './components/shell/shell.component';
+
+export interface AppShellRoutesConfig {
+  shellParentRoute?: Route;
+  shellChildren: Routes;
+}
+
+@NgModule({
+  imports: [SidenavLayoutModule, ExtensionsModule, RouterModule.forChild([]), CommonModule],
+  exports: [ShellLayoutComponent],
+  declarations: [ShellLayoutComponent]
+})
+export class ShellModule {
+  static withRoutes(routes: Routes | AppShellRoutesConfig): ModuleWithProviders<ShellModule> {
+    if (Array.isArray(routes)) {
+      return getModuleForRoutes(routes);
+    }
+
+    return getModuleForRouteConfig(routes);
+  }
+}
+
+function getModuleForRoutes(routes: Routes): ModuleWithProviders<ShellModule> {
+  const shellLayoutRoute = SHELL_LAYOUT_ROUTE;
+
+  routes.forEach((childRoute) => {
+    shellLayoutRoute.children.push(childRoute);
+  });
+
+  return {
+    ngModule: ShellModule,
+    providers: provideRoutes([shellLayoutRoute])
+  };
+}
+
+function getModuleForRouteConfig(config: AppShellRoutesConfig): ModuleWithProviders<ShellModule> {
+  const shellLayoutRoute = SHELL_LAYOUT_ROUTE;
+
+  const shellParentRoute = config.shellParentRoute;
+  const shellChildrenRoutes = config.shellChildren;
+
+  shellLayoutRoute.children.push(...shellChildrenRoutes);
+
+  const rootRoute = shellParentRoute ? shellParentRoute : shellLayoutRoute;
+
+  if (config.shellParentRoute) {
+    if (rootRoute.children === undefined) {
+      rootRoute.children = [];
+    }
+
+    rootRoute.children.push(shellLayoutRoute);
+  }
+
+  return {
+    ngModule: ShellModule,
+    providers: provideRoutes([rootRoute])
+  };
+}