@swimlane/ngx-dnd
Version:
Drag and Drop for Angular2 and beyond!
145 lines (144 loc) • 15.3 kB
JavaScript
import { Directive, ElementRef, HostListener, Input, Output, EventEmitter } from '@angular/core';
import { DroppableDirective } from './ngx-droppable.directive';
import { DrakeStoreService } from '../services/drake-store.service';
import * as i0 from "@angular/core";
import * as i1 from "../services/drake-store.service";
import * as i2 from "./ngx-droppable.directive";
/**
* Adds properties and events to draggable elements
*
* @export
*/
export class DraggableDirective {
el;
drakesService;
droppableDirective;
ngxDraggable;
model;
get dropZones() {
return this._dropZones || this.ngxDraggable || this._parentDropzones;
}
set dropZones(val) {
this._dropZones = val;
}
_moves = true;
/*
ContentChildren doesn't get children created with NgTemplateOutlet
See https://github.com/angular/angular/issues/14842
Implemented via updateElements method
@ContentChildren(DragHandleDirective, {descendants: true})
handlesList: QueryList<DragHandleDirective>; */
handles = [];
get hasHandle() {
return !!this.handles.length;
}
drag = new EventEmitter();
dragDelay = 200; // milliseconds
dragDelayed = true;
touchTimeout;
get element() {
return this.el.nativeElement;
}
_dropZones;
_parentDropzones;
constructor(el, drakesService, droppableDirective) {
this.el = el;
this.drakesService = drakesService;
this.droppableDirective = droppableDirective;
}
// From: https://github.com/bevacqua/dragula/issues/289#issuecomment-277143172
onMove(e) {
if (!this._moves || this.dragDelayed) {
e.stopPropagation();
clearTimeout(this.touchTimeout);
}
}
onDown() {
if (this._moves) {
this.touchTimeout = setTimeout(() => {
this.dragDelayed = false;
}, this.dragDelay);
}
}
onUp() {
if (this._moves) {
clearTimeout(this.touchTimeout);
this.dragDelayed = true;
}
}
ngOnInit() {
this.update();
}
update() {
this._parentDropzones = [this.droppableDirective.dropZone];
this.drakesService.registerDraggable(this);
this.updateElements();
}
ngOnDestroy() {
this.drakesService.removeDraggable(this);
}
updateElements() {
const nativeElement = this.el.nativeElement;
const handles = nativeElement.querySelectorAll('[ngxdraghandle]');
this.handles = Array.from(handles).filter((h) => findFirstDraggableParent(h) === nativeElement);
function findFirstDraggableParent(c) {
while (c.parentNode) {
c = c.parentNode;
if (c.hasAttribute && c.hasAttribute('ngxdraggable')) {
return c;
}
}
}
}
canMove(source, handle, sibling) {
if (typeof this._moves === 'boolean')
return this._moves;
if (typeof this._moves === 'function')
return this._moves(this.model, source, handle, sibling);
return true;
}
moves(source, handle, sibling) {
if (!this.canMove(source, handle, sibling))
return false;
return this.hasHandle ? this.handles.some(h => handelFor(handle, h)) : true;
function handelFor(c, p) {
if (c === p)
return true;
while ((c = c.parentNode) && c !== p)
; // tslint:disable-line
return !!c;
}
}
ngDoCheck() {
this.updateElements();
}
static ɵfac = function DraggableDirective_Factory(t) { return new (t || DraggableDirective)(i0.ɵɵdirectiveInject(i0.ElementRef), i0.ɵɵdirectiveInject(i1.DrakeStoreService), i0.ɵɵdirectiveInject(i2.DroppableDirective)); };
static ɵdir = /*@__PURE__*/ i0.ɵɵdefineDirective({ type: DraggableDirective, selectors: [["", "ngxDraggable", ""]], hostBindings: function DraggableDirective_HostBindings(rf, ctx) { if (rf & 1) {
i0.ɵɵlistener("touchmove", function DraggableDirective_touchmove_HostBindingHandler($event) { return ctx.onMove($event); })("touchstart", function DraggableDirective_touchstart_HostBindingHandler() { return ctx.onDown(); })("touchend", function DraggableDirective_touchend_HostBindingHandler() { return ctx.onUp(); });
} }, inputs: { ngxDraggable: "ngxDraggable", model: "model", dropZones: "dropZones", _moves: [0, "moves", "_moves"] }, outputs: { drag: "drag" } });
}
(() => { (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(DraggableDirective, [{
type: Directive,
args: [{ selector: '[ngxDraggable]' }]
}], () => [{ type: i0.ElementRef }, { type: i1.DrakeStoreService }, { type: i2.DroppableDirective }], { ngxDraggable: [{
type: Input
}], model: [{
type: Input
}], dropZones: [{
type: Input
}], _moves: [{
type: Input,
args: ['moves']
}], drag: [{
type: Output
}], onMove: [{
type: HostListener,
args: ['touchmove', ['$event']]
}], onDown: [{
type: HostListener,
args: ['touchstart']
}], onUp: [{
type: HostListener,
args: ['touchend']
}] }); })();
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*/\n\n  handles: any[] = [];\n\n  get hasHandle() {\n    return !!this.handles.length;\n  }\n\n  @Output() drag: EventEmitter<any> = new EventEmitter<any>();\n\n  dragDelay: number = 200; // milliseconds\n  dragDelayed: boolean = true;\n\n  touchTimeout: any;\n\n  get element(): any {\n    return this.el.nativeElement;\n  }\n\n  _dropZones: string[];\n  _parentDropzones: string[];\n\n  constructor(\n    private el: ElementRef,\n    private drakesService: DrakeStoreService,\n    private droppableDirective: DroppableDirective\n  ) {}\n\n  // From: https://github.com/bevacqua/dragula/issues/289#issuecomment-277143172\n  @HostListener('touchmove', ['$event'])\n  onMove(e: Event) {\n    if (!this._moves || this.dragDelayed) {\n      e.stopPropagation();\n      clearTimeout(this.touchTimeout);\n    }\n  }\n\n  @HostListener('touchstart')\n  onDown() {\n    if (this._moves) {\n      this.touchTimeout = setTimeout(() => {\n        this.dragDelayed = false;\n      }, this.dragDelay);\n    }\n  }\n\n  @HostListener('touchend')\n  onUp() {\n    if (this._moves) {\n      clearTimeout(<number>this.touchTimeout);\n      this.dragDelayed = true;\n    }\n  }\n\n  ngOnInit(): void {\n    this.update();\n  }\n\n  update(): void {\n    this._parentDropzones = [this.droppableDirective.dropZone];\n    this.drakesService.registerDraggable(this);\n    this.updateElements();\n  }\n\n  ngOnDestroy(): void {\n    this.drakesService.removeDraggable(this);\n  }\n\n  updateElements(): void {\n    const nativeElement = this.el.nativeElement;\n    const handles: NodeList = nativeElement.querySelectorAll('[ngxdraghandle]');\n    this.handles = Array.from(handles).filter((h: any) => findFirstDraggableParent(h) === nativeElement);\n\n    function findFirstDraggableParent(c: any) {\n      while (c.parentNode) {\n        c = c.parentNode;\n        if (c.hasAttribute && c.hasAttribute('ngxdraggable')) {\n          return c;\n        }\n      }\n    }\n  }\n\n  canMove(source?: any, handle?: any, sibling?: any): boolean {\n    if (typeof this._moves === 'boolean') return this._moves;\n    if (typeof this._moves === 'function') return this._moves(this.model, source, handle, sibling);\n    return true;\n  }\n\n  moves(source: any, handle: any, sibling: any): boolean {\n    if (!this.canMove(source, handle, sibling)) return false;\n\n    return this.hasHandle ? this.handles.some(h => handelFor(handle, h)) : true;\n\n    function handelFor(c: any, p: any) {\n      if (c === p) return true;\n      while ((c = c.parentNode) && c !== p); // tslint:disable-line\n      return !!c;\n    }\n  }\n\n  ngDoCheck(): void {\n    this.updateElements();\n  }\n}\n"]}