62 lines
2.0 KiB
TypeScript
62 lines
2.0 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 { Directive, Input, ElementRef, AfterViewInit } from '@angular/core';
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import { CoreDomUtils } from '@services/utils/dom';
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import { CoreDom } from '@singletons/dom';
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import { CoreWait } from '@singletons/wait';
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import { toBoolean } from '../transforms/boolean';
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/**
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* Directive to auto focus an element when a view is loaded.
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*
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* The value of the input will decide if show keyboard when focusing the element (only on Android).
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* In case value is false, the directive is disabled.
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*
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* <ion-input [core-auto-focus]="showKeyboard">
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*/
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@Directive({
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selector: '[core-auto-focus]',
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})
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export class CoreAutoFocusDirective implements AfterViewInit {
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@Input({ alias: 'core-auto-focus', transform: toBoolean }) autoFocus = true;
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protected element: HTMLIonInputElement | HTMLIonTextareaElement | HTMLIonSearchbarElement | HTMLElement;
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constructor(element: ElementRef) {
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this.element = element.nativeElement;
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}
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/**
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* @inheritdoc
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*/
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async ngAfterViewInit(): Promise<void> {
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if (!this.autoFocus) {
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return;
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}
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await CoreDom.waitToBeInDOM(this.element);
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// Wait in case there is an animation to enter the page, otherwise the interaction
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// between the keyboard appearing and the animation causes a visual glitch.
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await CoreWait.wait(540);
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CoreDomUtils.focusElement(this.element);
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}
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}
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