alfresco-ng2-components/lib/content-services/src/lib/search/components/search-slider/search-slider.component.ts

/*!
 * @license
 * Copyright © 2005-2025 Hyland Software, Inc. and its affiliates. All rights reserved.
 *
 * 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 { Component, DestroyRef, inject, Input, OnInit, ViewEncapsulation } from '@angular/core';
import { SearchWidget } from '../../models/search-widget.interface';
import { SearchWidgetSettings } from '../../models/search-widget-settings.interface';
import { SearchQueryBuilderService } from '../../services/search-query-builder.service';
import { ReplaySubject } from 'rxjs';
import { CommonModule } from '@angular/common';
import { MatSliderModule } from '@angular/material/slider';
import { FormsModule } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { TranslateModule } from '@ngx-translate/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';

@Component({
    selector: 'adf-search-slider',
    standalone: true,
    imports: [CommonModule, MatSliderModule, FormsModule, MatButtonModule, TranslateModule],
    templateUrl: './search-slider.component.html',
    styleUrls: ['./search-slider.component.scss'],
    encapsulation: ViewEncapsulation.None,
    host: { class: 'adf-search-slider' }
})
export class SearchSliderComponent implements SearchWidget, OnInit {
    /** The numeric value represented by the slider. */
    @Input()
    value: number | null;

    isActive?: boolean;
    startValue: any;

    id: string;
    settings: SearchWidgetSettings;
    context: SearchQueryBuilderService;
    step: number;
    min: number;
    max: number;
    thumbLabel = false;
    enableChangeUpdate: boolean;
    displayValue$ = new ReplaySubject<string>(1);

    private readonly destroyRef = inject(DestroyRef);

    ngOnInit() {
        if (this.settings) {
            if (Object.prototype.hasOwnProperty.call(this.settings, 'min')) {
                this.min = this.settings['min'];
            }

            if (Object.prototype.hasOwnProperty.call(this.settings, 'max')) {
                this.max = this.settings['max'];
            }

            if (Object.prototype.hasOwnProperty.call(this.settings, 'step')) {
                this.step = this.settings['step'];
            }

            this.thumbLabel = this.settings['thumbLabel'] ? true : false;
            this.enableChangeUpdate = this.settings.allowUpdateOnChange ?? true;
        }

        if (this.startValue) {
            this.setValue(this.startValue);
        }
        this.context.populateFilters
            .asObservable()
            .pipe(takeUntilDestroyed(this.destroyRef))
            .subscribe((filtersQueries) => {
                if (filtersQueries[this.id]) {
                    this.value = filtersQueries[this.id];
                    this.updateQuery(this.value, false);
                } else {
                    this.reset(false);
                }
                this.context.filterLoaded.next();
            });
    }

    clear() {
        this.value = this.min || 0;
        if (this.enableChangeUpdate) {
            this.updateQuery(null);
        }
    }

    reset(updateContext = true) {
        this.value = this.min || 0;
        this.updateQuery(null, updateContext);
    }

    onChangedHandler() {
        if (this.enableChangeUpdate) {
            this.updateQuery(this.value);
        }
    }

    submitValues() {
        this.updateQuery(this.value);
    }

    hasValidValue() {
        return !!this.value;
    }

    getCurrentValue() {
        return this.value;
    }

    setValue(value: any) {
        this.value = value;
        this.submitValues();
    }

    private updateQuery(value: number | null, updateContext = true) {
        this.context.filterRawParams[this.id] = value;
        this.displayValue$.next(this.value ? `${this.value} ${this.settings.unit ?? ''}` : '');
        if (this.id && this.context && this.settings && this.settings.field) {
            if (value === null) {
                this.context.queryFragments[this.id] = '';
            } else {
                this.context.queryFragments[this.id] = `${this.settings.field}:[0 TO ${value}]`;
            }
            if (updateContext) {
                this.context.update();
            }
        }
    }
}