ng-zorro-antd/esm2015/cdk/overflow/overflow-item.directive.js

An enterprise-class UI components based on Ant Design and Angular

/**
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
 */
import { ChangeDetectorRef, Directive, ElementRef } from '@angular/core';
import { distinctUntilChanged, map, startWith, tap } from 'rxjs/operators';
import { NzResizeObserver } from 'ng-zorro-antd/cdk/resize-observer';
export class NzOverflowItemDirective {
    constructor(nzResizeObserver, elementRef, cdr) {
        this.nzResizeObserver = nzResizeObserver;
        this.elementRef = elementRef;
        this.cdr = cdr;
        this.overflowStyle = undefined;
        this.itemWidth$ = this.nzResizeObserver.observe(this.elementRef.nativeElement).pipe(map(([item]) => item.target.offsetWidth), distinctUntilChanged(), startWith(undefined), tap(width => {
            this.itemWidth = width;
        }));
        this.itemWidth = undefined;
    }
    setItemStyle(display, order) {
        const mergedHidden = !display;
        this.overflowStyle = {
            opacity: mergedHidden ? 0 : 1,
            height: mergedHidden ? 0 : undefined,
            overflowY: mergedHidden ? 'hidden' : undefined,
            order: order,
            pointerEvents: mergedHidden ? 'none' : undefined,
            position: mergedHidden ? 'absolute' : undefined
        };
        this.cdr.detectChanges();
    }
}
NzOverflowItemDirective.decorators = [
    { type: Directive, args: [{
                selector: '[nzOverflowItem]',
                host: {
                    '[style]': 'overflowStyle'
                }
            },] }
];
NzOverflowItemDirective.ctorParameters = () => [
    { type: NzResizeObserver },
    { type: ElementRef },
    { type: ChangeDetectorRef }
];
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