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@Eetezadi
Forked from maxt3r/autoresize.ts
Last active Feb 26, 2017
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Ionic 2 ion-textarea autoresize
// An autoresize directive that works with ion-textarea in Ionic 2
// Usage example: <ion-textarea autoresize [(ngModel)]="body"></ion-textarea>
// Based on https://www.npmjs.com/package/angular2-autosize
import { Directive, HostListener, ElementRef } from "@angular/core";
@Directive({
selector: "ion-textarea[autoresize]" // Attribute selector
})
export class Autoresize {
@HostListener("input", ["$event.target"])
onInput(textArea: HTMLTextAreaElement): void {
this.adjust();
}
constructor(public element: ElementRef) {
}
ngOnInit(): void {
this.adjust();
}
adjust(): void {
let ta = this.element.nativeElement.querySelector("textarea");
if (ta) {
ta.style.overflow = "hidden";
ta.style.height = "auto";
ta.style.height = ta.scrollHeight + "px";
}
}
}
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