ngx-textarea-autosize/esm2015/autosize.directive.js

Angular 2+ directive to automatically control height textarea to fit content

import * as tslib_1 from "tslib";
import { Directive, ElementRef, HostListener, Input, HostBinding, Renderer2 } from '@angular/core';
let AutosizeDirective = class AutosizeDirective {
    constructor(elem, renderer) {
        this.elem = elem;
        this.renderer = renderer;
        this.overflow = 'hidden';
        this.rows = 1;
    }
    ngAfterViewInit() {
        this.resize();
    }
    ngDoCheck() {
        this.resize();
    }
    resize() {
        const textarea = this.elem.nativeElement;
        // Calculate border height which is not included in scrollHeight
        const borderHeight = textarea.offsetHeight - textarea.clientHeight;
        // Reset textarea height to auto that correctly calculate the new height
        this.setHeight('auto');
        // Set new height
        this.setHeight(`${textarea.scrollHeight + borderHeight}px`);
    }
    setHeight(value) {
        this.renderer.setStyle(this.elem.nativeElement, 'height', value);
    }
};
tslib_1.__decorate([
    HostBinding('style.overflow'),
    tslib_1.__metadata("design:type", Object)
], AutosizeDirective.prototype, "overflow", void 0);
tslib_1.__decorate([
    Input(),
    HostBinding('rows'),
    tslib_1.__metadata("design:type", Object)
], AutosizeDirective.prototype, "rows", void 0);
tslib_1.__decorate([
    HostListener('input'),
    tslib_1.__metadata("design:type", Function),
    tslib_1.__metadata("design:paramtypes", []),
    tslib_1.__metadata("design:returntype", void 0)
], AutosizeDirective.prototype, "resize", null);
AutosizeDirective = tslib_1.__decorate([
    Directive({
        selector: 'textarea[autosize]'
    }),
    tslib_1.__metadata("design:paramtypes", [ElementRef, Renderer2])
], AutosizeDirective);
export { AutosizeDirective };
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