@swimlane/ngx-datatable
Version:
ngx-datatable is an Angular table grid component for presenting large and complex data.
103 lines • 11.8 kB
JavaScript
import { Directive, Input, Output, EventEmitter, HostBinding, HostListener } from '@angular/core';
import { fromEvent } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
export class LongPressDirective {
constructor() {
this.pressEnabled = true;
this.duration = 500;
this.longPressStart = new EventEmitter();
this.longPressing = new EventEmitter();
this.longPressEnd = new EventEmitter();
this.mouseX = 0;
this.mouseY = 0;
}
get press() {
return this.pressing;
}
get isLongPress() {
return this.isLongPressing;
}
onMouseDown(event) {
// don't do right/middle clicks
if (event.which !== 1 || !this.pressEnabled)
return;
// don't start drag if its on resize handle
const target = event.target;
if (target.classList.contains('resize-handle'))
return;
this.mouseX = event.clientX;
this.mouseY = event.clientY;
this.pressing = true;
this.isLongPressing = false;
const mouseup = fromEvent(document, 'mouseup');
this.subscription = mouseup.subscribe((ev) => this.onMouseup());
this.timeout = setTimeout(() => {
this.isLongPressing = true;
this.longPressStart.emit({
event,
model: this.pressModel
});
this.subscription.add(fromEvent(document, 'mousemove')
.pipe(takeUntil(mouseup))
.subscribe((mouseEvent) => this.onMouseMove(mouseEvent)));
this.loop(event);
}, this.duration);
this.loop(event);
}
onMouseMove(event) {
if (this.pressing && !this.isLongPressing) {
const xThres = Math.abs(event.clientX - this.mouseX) > 10;
const yThres = Math.abs(event.clientY - this.mouseY) > 10;
if (xThres || yThres) {
this.endPress();
}
}
}
loop(event) {
if (this.isLongPressing) {
this.timeout = setTimeout(() => {
this.longPressing.emit({
event,
model: this.pressModel
});
this.loop(event);
}, 50);
}
}
endPress() {
clearTimeout(this.timeout);
this.isLongPressing = false;
this.pressing = false;
this._destroySubscription();
this.longPressEnd.emit({
model: this.pressModel
});
}
onMouseup() {
this.endPress();
}
ngOnDestroy() {
this._destroySubscription();
}
_destroySubscription() {
if (this.subscription) {
this.subscription.unsubscribe();
this.subscription = undefined;
}
}
}
LongPressDirective.decorators = [
{ type: Directive, args: [{ selector: '[long-press]' },] }
];
LongPressDirective.propDecorators = {
pressEnabled: [{ type: Input }],
pressModel: [{ type: Input }],
duration: [{ type: Input }],
longPressStart: [{ type: Output }],
longPressing: [{ type: Output }],
longPressEnd: [{ type: Output }],
press: [{ type: HostBinding, args: ['class.press',] }],
isLongPress: [{ type: HostBinding, args: ['class.longpress',] }],
onMouseDown: [{ type: HostListener, args: ['mousedown', ['$event'],] }]
};
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{ Directive, Input, Output, EventEmitter, HostBinding, HostListener, OnDestroy } from '@angular/core';\nimport { Observable, Subscription, fromEvent } from 'rxjs';\nimport { takeUntil } from 'rxjs/operators';\nimport { MouseEvent } from '../events';\n\n@Directive({ selector: '[long-press]' })\nexport class LongPressDirective implements OnDestroy {\n  @Input() pressEnabled: boolean = true;\n  @Input() pressModel: any;\n  @Input() duration: number = 500;\n\n  @Output() longPressStart: EventEmitter<any> = new EventEmitter();\n  @Output() longPressing: EventEmitter<any> = new EventEmitter();\n  @Output() longPressEnd: EventEmitter<any> = new EventEmitter();\n\n  pressing: boolean;\n  isLongPressing: boolean;\n  timeout: any;\n  mouseX: number = 0;\n  mouseY: number = 0;\n\n  subscription: Subscription;\n\n  @HostBinding('class.press')\n  get press(): boolean {\n    return this.pressing;\n  }\n\n  @HostBinding('class.longpress')\n  get isLongPress(): boolean {\n    return this.isLongPressing;\n  }\n\n  @HostListener('mousedown', ['$event'])\n  onMouseDown(event: MouseEvent): void {\n    // don't do right/middle clicks\n    if (event.which !== 1 || !this.pressEnabled) return;\n\n    // don't start drag if its on resize handle\n    const target = <HTMLElement>event.target;\n    if (target.classList.contains('resize-handle')) return;\n\n    this.mouseX = event.clientX;\n    this.mouseY = event.clientY;\n\n    this.pressing = true;\n    this.isLongPressing = false;\n\n    const mouseup = fromEvent(document, 'mouseup');\n    this.subscription = mouseup.subscribe((ev: MouseEvent) => this.onMouseup());\n\n    this.timeout = setTimeout(() => {\n      this.isLongPressing = true;\n      this.longPressStart.emit({\n        event,\n        model: this.pressModel\n      });\n\n      this.subscription.add(\n        fromEvent(document, 'mousemove')\n          .pipe(takeUntil(mouseup))\n          .subscribe((mouseEvent: MouseEvent) => this.onMouseMove(mouseEvent))\n      );\n\n      this.loop(event);\n    }, this.duration);\n\n    this.loop(event);\n  }\n\n  onMouseMove(event: MouseEvent): void {\n    if (this.pressing && !this.isLongPressing) {\n      const xThres = Math.abs(event.clientX - this.mouseX) > 10;\n      const yThres = Math.abs(event.clientY - this.mouseY) > 10;\n\n      if (xThres || yThres) {\n        this.endPress();\n      }\n    }\n  }\n\n  loop(event: MouseEvent): void {\n    if (this.isLongPressing) {\n      this.timeout = setTimeout(() => {\n        this.longPressing.emit({\n          event,\n          model: this.pressModel\n        });\n        this.loop(event);\n      }, 50);\n    }\n  }\n\n  endPress(): void {\n    clearTimeout(this.timeout);\n    this.isLongPressing = false;\n    this.pressing = false;\n    this._destroySubscription();\n\n    this.longPressEnd.emit({\n      model: this.pressModel\n    });\n  }\n\n  onMouseup(): void {\n    this.endPress();\n  }\n\n  ngOnDestroy(): void {\n    this._destroySubscription();\n  }\n\n  private _destroySubscription(): void {\n    if (this.subscription) {\n      this.subscription.unsubscribe();\n      this.subscription = undefined;\n    }\n  }\n}\n"]}