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columns-selector.component.ts
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columns-selector.component.ts
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/*!
* @license
* Copyright 2019 Alfresco Software, Ltd.
*
* 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, EventEmitter, Input, OnDestroy, OnInit, Output, ViewEncapsulation } from '@angular/core';
import { FormControl } from '@angular/forms';
import { MatMenuTrigger } from '@angular/material/menu';
import { Subject } from 'rxjs';
import { debounceTime, takeUntil } from 'rxjs/operators';
import { DataColumn } from '../../data/data-column.model';
@Component({
selector: 'adf-datatable-column-selector',
templateUrl: './columns-selector.component.html',
styleUrls: ['./columns-selector.component.scss'],
encapsulation: ViewEncapsulation.None
})
export class ColumnsSelectorComponent implements OnInit, OnDestroy {
@Input()
columns: DataColumn[] = [];
@Input()
mainMenuTrigger: MatMenuTrigger;
@Output()
submitColumnsVisibility = new EventEmitter<DataColumn[]>();
onDestroy$ = new Subject();
columnItems: DataColumn[] = [];
searchInputControl = new FormControl('');
searchQuery = '';
ngOnInit(): void {
this.mainMenuTrigger.menuOpened.pipe(
takeUntil(this.onDestroy$)
).subscribe(() => {
const columns = this.columns.map(column => ({...column}));
this.columnItems = this.sortColumns(columns);
});
this.mainMenuTrigger.menuClosed.pipe(
takeUntil(this.onDestroy$)
).subscribe(() => {
this.searchInputControl.setValue('');
});
this.searchInputControl.valueChanges.pipe(
debounceTime(300),
takeUntil(this.onDestroy$)
).subscribe((searchQuery) => {
this.searchQuery = searchQuery;
});
}
ngOnDestroy() {
this.onDestroy$.next(true);
this.onDestroy$.complete();
}
closeMenu(): void {
this.mainMenuTrigger.closeMenu();
}
changeColumnVisibility(column: DataColumn): void {
column.isHidden = !column.isHidden;
}
apply(): void {
this.submitColumnsVisibility.emit(this.columnItems);
this.closeMenu();
}
private sortColumns(columns: DataColumn[]): DataColumn[] {
const shownColumns = columns.filter(column => !column.isHidden);
const hiddenColumns = columns.filter(column => column.isHidden);
return [...shownColumns, ...hiddenColumns];
}
}