forked from CIT/Vmeda.Online
69 lines
1.8 KiB
TypeScript
69 lines
1.8 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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export abstract class CoreAriaRoleButton<T = unknown> {
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componentInstance: T;
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constructor(componentInstance: T) {
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this.componentInstance = componentInstance;
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}
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/**
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* A11y key functionallity that prevents keyDown events.
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*
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* @param event Event.
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*/
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keyDown(event: KeyboardEvent): void {
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if ((event.key == ' ' || event.key == 'Enter') && this.isAllowed()) {
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event.preventDefault();
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event.stopPropagation();
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}
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}
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/**
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* A11y key functionallity that translates space and enter keys to click action.
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*
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* @param event Event.
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*/
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keyUp(event: KeyboardEvent): void {
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if ((event.key == ' ' || event.key == 'Enter') && this.isAllowed()) {
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event.preventDefault();
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event.stopPropagation();
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this.click(event);
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}
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}
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/**
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* A11y click functionallity.
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*
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* @param event Event.
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*/
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// eslint-disable-next-line @typescript-eslint/no-unused-vars
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click(event?: Event): void {
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// Nothing defined here.
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}
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/**
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* Checks if action is allowed in class.
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*
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* @returns If allowed.
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*/
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isAllowed(): boolean {
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return true;
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}
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}
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