我的Angular2应用程序中有一个Bootstrap模式弹出窗口。我希望它可以拖延。如果有人可以帮我解决这个问题,那将会很有帮助。
<div class="modal modal-sm fade fade in" [class]="modalWorkPhone" id="myModal" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="panel-heading" style="background-color:#2e90bd">
</div>
</div>
</div>
</div>
我有相同的用户请求,并使用npm模块“angular-draggable”解决了它。只需按照描述安装,并将draggable="true"
属性添加到您的模态div。
以下指令代码适用于Angular 6+和ng-bootstrap库中的模态窗口。
您必须使您的视图模块可以看到此指令,并且所有模态都将变为可拖动而不进行任何更改,因为该指令绑定到.modal-header
类:
import { Directive, ElementRef, Renderer2, AfterViewInit, Input, OnDestroy } from '@angular/core';
import { fromEvent, Subscription } from 'rxjs';
import { mergeMap, takeUntil, tap } from 'rxjs/operators';
interface Point {x: number, y: number};
@Directive({
selector: '.modal-header'
})
export class DragModalDirective implements AfterViewInit, OnDestroy {
constructor (
private el: ElementRef,
private renderer: Renderer2,
) {}
subscription: Subscription;
start: Point;
offset: Point = {x: 0, y: 0};
ngAfterViewInit() {
setTimeout(() => {
this.makeItDraggable();
});
}
private makeItDraggable() {
const modalDialogElement = this.el.nativeElement.closest(".modal-dialog");
if (!modalDialogElement) {
console.error('DragModalDirective cannot find the parent element with class modal-dialog')
return;
}
this.renderer.setStyle(this.el.nativeElement, 'user-select', 'none');
this.renderer.setStyle(this.el.nativeElement, 'cursor', 'move');
this.renderer.setStyle(modalDialogElement, 'transition', 'none');
const down$ = fromEvent(this.el.nativeElement, 'mousedown')
const move$ = fromEvent(document, 'mousemove');
const up$ = fromEvent(document, 'mouseup')
const drag$ = down$.pipe(
tap(($event: MouseEvent) => {
this.start = {
x: $event.clientX - this.offset.x,
y: $event.clientY - this.offset.y
};
}),
mergeMap(down => move$.pipe(
takeUntil(up$)
))
);
this.subscription = drag$.subscribe(($event: MouseEvent) => {
this.offset = {
x: $event.clientX - this.start.x,
y: $event.clientY - this.start.y
}
this.renderer.setStyle(modalDialogElement, 'transform', `translate(${this.offset.x}px, ${this.offset.y}px)`);
})
}
ngOnDestroy() {
if (this.subscription)
this.subscription.unsubscribe();
}
}