forked from CIT/Vmeda.Online
48 lines
1.6 KiB
TypeScript
48 lines
1.6 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { CanDeactivateFn } from '@angular/router';
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import { CoreUtils } from '@services/utils/utils';
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/**
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* Check if a component implements the canLeave interface.
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*
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* @param component Component instance to check.
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* @returns Whether it implements CanLeave interface.
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*/
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const isCanLeave = (component: unknown | null): component is CanLeave =>
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component !== null && 'canLeave' in <CanLeave> component;
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/**
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* Guard to check if the user can leave a page.
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*
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* @returns True if user has sites, redirect route otherwise.
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*/
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export const canLeaveGuard: CanDeactivateFn<unknown> = async (component: unknown) => {
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if (!isCanLeave(component)) {
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return true;
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}
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return CoreUtils.ignoreErrors(component.canLeave(), false);
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};
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export interface CanLeave {
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/**
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* Check whether the user can leave the current route.
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*
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* @returns Promise resolved with true if can leave, resolved with false or rejected if cannot leave.
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*/
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canLeave: () => Promise<boolean>;
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}
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