56 lines
2.0 KiB
TypeScript
56 lines
2.0 KiB
TypeScript
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// (C) Copyright 2015 Martin Dougiamas
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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, AfterViewInit, ElementRef } from '@angular/core';
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import { CoreDomUtilsProvider } from '../providers/utils/dom';
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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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* You can apply it conditionallity assigning it a boolean value: <ion-input [mm-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('core-auto-focus') coreAutoFocus: boolean = true;
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protected element: HTMLElement;
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constructor(element: ElementRef, private domUtils: CoreDomUtilsProvider) {
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this.element = element.nativeElement || element;
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}
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/**
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* Function after the view is initialized.
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*/
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ngAfterViewInit() {
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this.coreAutoFocus = typeof this.coreAutoFocus != 'boolean' ? true : this.coreAutoFocus;
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if (this.coreAutoFocus) {
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// If it's a ion-input or ion-textarea, search the right input to use.
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let element = this.element;
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if (this.element.tagName == 'ION-INPUT') {
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element = this.element.querySelector('input') || element;
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} else if (this.element.tagName == 'ION-TEXTAREA') {
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element = this.element.querySelector('textarea') || element;
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}
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// Wait a bit to make sure the view is loaded.
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setTimeout(() => {
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this.domUtils.focusElement(element);
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}, 200);
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}
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}
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}
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