forked from EVOgeek/Vmeda.Online
44 lines
1.4 KiB
TypeScript
44 lines
1.4 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 { Injectable } from '@angular/core';
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import { CanDeactivate } from '@angular/router';
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import { CoreUtils } from '@services/utils/utils';
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@Injectable({ providedIn: 'root' })
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export class CanLeaveGuard implements CanDeactivate<unknown> {
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async canDeactivate(component: unknown | null): Promise<boolean> {
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if (!this.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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isCanLeave(component: unknown | null): component is CanLeave {
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return component !== null && 'canLeave' in <CanLeave> component;
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}
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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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* @return 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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