///
/// Copyright 2015-2026 Micro Focus or one of its affiliates.
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///      http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///

import { Directive, ElementRef, inject, Input, OnChanges } from '@angular/core';
import { ScrollIntoViewService } from './scroll-into-view.service';

@Directive({
  selector: '[uxScrollIntoViewIf]',
  providers: [ScrollIntoViewService],
})
export class ScrollIntoViewIfDirective implements OnChanges {
  private readonly _element = inject(ElementRef);

  private readonly _scrollIntoViewService = inject(ScrollIntoViewService);

  @Input('uxScrollIntoViewIf') condition = false;
  @Input() scrollParent: HTMLElement;

  ngOnChanges() {
    if (this.condition) {
      setTimeout(() =>
        this._scrollIntoViewService.scrollIntoView(this._element.nativeElement, this.scrollParent)
      );
    }
  }
}