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ngx-drag-drop

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Angular directives using the native HTML Drag And Drop API

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{"version":3,"file":"ngx-drag-drop.mjs","sources":["../../../projects/dnd/src/lib/dnd-utils.ts","../../../projects/dnd/src/lib/dnd-state.ts","../../../projects/dnd/src/lib/dnd-draggable.directive.ts","../../../projects/dnd/src/lib/dnd-dropzone.directive.ts","../../../projects/dnd/src/lib/dnd-handle.directive.ts","../../../projects/dnd/src/lib/dnd.module.ts","../../../projects/dnd/src/public-api.ts","../../../projects/dnd/src/ngx-drag-drop.ts"],"sourcesContent":["import { DropEffect, EffectAllowed } from './dnd-types';\n\nexport interface DragDropData {\n data?: any;\n type?: string;\n}\n\nexport interface DndEvent extends DragEvent {\n _dndUsingHandle?: boolean;\n _dndDropzoneActive?: true;\n}\n\nexport type DndDragImageOffsetFunction = (\n event: DragEvent,\n dragImage: Element\n) => { x: number; y: number };\n\nexport const DROP_EFFECTS = ['move', 'copy', 'link'] as DropEffect[];\n\nexport const CUSTOM_MIME_TYPE = 'application/x-dnd';\n\nfunction mimeTypeIsCustom(mimeType: string) {\n return mimeType.substring(0, CUSTOM_MIME_TYPE.length) === CUSTOM_MIME_TYPE;\n}\n\nexport function getWellKnownMimeType(event: DragEvent): string | null {\n if (event.dataTransfer) {\n const types = event.dataTransfer.types;\n\n for (let i = 0; i < types.length; i++) {\n if (mimeTypeIsCustom(types[i])) {\n return types[i];\n }\n }\n }\n\n return null;\n}\n\nexport function setDragData(\n event: DragEvent,\n data: DragDropData,\n effectAllowed: EffectAllowed\n): void {\n const mimeType = CUSTOM_MIME_TYPE + (data.type ? '-' + data.type : '');\n\n const dataString = JSON.stringify(data);\n\n event.dataTransfer?.setData(mimeType, dataString);\n}\n\nexport function getDropData(\n event: DragEvent,\n dragIsExternal: boolean\n): DragDropData {\n const mimeType = getWellKnownMimeType(event);\n\n if (dragIsExternal === true) {\n if (mimeType !== null && mimeTypeIsCustom(mimeType)) {\n return JSON.parse(event.dataTransfer?.getData(mimeType) ?? '{}');\n }\n\n return {};\n }\n\n if (mimeType !== null) {\n return JSON.parse(event.dataTransfer?.getData(mimeType) ?? '{}');\n }\n\n return {};\n}\n\nexport function filterEffects(\n effects: DropEffect[],\n allowed: EffectAllowed | DropEffect\n): DropEffect[] {\n if (allowed === 'all' || allowed === 'uninitialized') {\n return effects;\n }\n\n return effects.filter(function (effect) {\n return allowed.toLowerCase().indexOf(effect) !== -1;\n });\n}\n\nexport function getDirectChildElement(\n parentElement: Element,\n childElement: Element\n): Element | null {\n let directChild: Node = childElement;\n\n while (directChild.parentNode !== parentElement) {\n // reached root node without finding given parent\n if (!directChild.parentNode) {\n return null;\n }\n\n directChild = directChild.parentNode;\n }\n\n return directChild as Element;\n}\n\nexport function shouldPositionPlaceholderBeforeElement(\n event: DragEvent,\n element: Element,\n horizontal: boolean\n) {\n const bounds = element.getBoundingClientRect();\n\n // If the pointer is in the upper half of the list item element,\n // we position the placeholder before the list item, otherwise after it.\n if (horizontal) {\n return event.clientX < bounds.left + bounds.width / 2;\n }\n\n return event.clientY < bounds.top + bounds.height / 2;\n}\n\nexport function calculateDragImageOffset(\n event: DragEvent,\n dragImage: Element\n): { x: number; y: number } {\n const dragImageComputedStyle = window.getComputedStyle(dragImage);\n const paddingTop = parseFloat(dragImageComputedStyle.paddingTop) || 0;\n const paddingLeft = parseFloat(dragImageComputedStyle.paddingLeft) || 0;\n const borderTop = parseFloat(dragImageComputedStyle.borderTopWidth) || 0;\n const borderLeft = parseFloat(dragImageComputedStyle.borderLeftWidth) || 0;\n\n return {\n x: event.offsetX + paddingLeft + borderLeft,\n y: event.offsetY + paddingTop + borderTop,\n };\n}\n\nexport function setDragImage(\n event: DragEvent,\n dragImage: Element,\n offsetFunction: DndDragImageOffsetFunction\n): void {\n const offset = offsetFunction(event, dragImage) || { x: 0, y: 0 };\n\n (event.dataTransfer as any).setDragImage(dragImage, offset.x, offset.y);\n}\n","import { DropEffect, EffectAllowed } from './dnd-types';\nimport {\n CUSTOM_MIME_TYPE,\n DROP_EFFECTS,\n filterEffects,\n getWellKnownMimeType,\n} from './dnd-utils';\n\nexport interface DndState {\n isDragging: boolean;\n dropEffect?: DropEffect;\n effectAllowed?: EffectAllowed;\n type?: string;\n}\n\nconst _dndState: DndState = {\n isDragging: false,\n dropEffect: 'none',\n effectAllowed: 'all',\n type: undefined,\n};\n\nexport function startDrag(\n event: DragEvent,\n effectAllowed: EffectAllowed,\n type: string | undefined\n) {\n _dndState.isDragging = true;\n _dndState.dropEffect = 'none';\n _dndState.effectAllowed = effectAllowed;\n _dndState.type = type;\n\n if (event.dataTransfer) {\n event.dataTransfer.effectAllowed = effectAllowed;\n }\n}\n\nexport function endDrag() {\n _dndState.isDragging = false;\n _dndState.dropEffect = undefined;\n _dndState.effectAllowed = undefined;\n _dndState.type = undefined;\n}\n\nexport function setDropEffect(event: DragEvent, dropEffect: DropEffect) {\n if (_dndState.isDragging === true) {\n _dndState.dropEffect = dropEffect;\n }\n\n if (event.dataTransfer) {\n event.dataTransfer.dropEffect = dropEffect;\n }\n}\n\nexport function getDropEffect(\n event: DragEvent,\n effectAllowed?: EffectAllowed | DropEffect\n): DropEffect {\n const dataTransferEffectAllowed: EffectAllowed = event.dataTransfer\n ? (event.dataTransfer.effectAllowed as EffectAllowed)\n : 'uninitialized';\n\n let effects = filterEffects(DROP_EFFECTS, dataTransferEffectAllowed);\n\n if (_dndState.isDragging === true) {\n effects = filterEffects(effects, _dndState.effectAllowed!);\n }\n\n if (effectAllowed) {\n effects = filterEffects(effects, effectAllowed);\n }\n\n // MacOS automatically filters dataTransfer.effectAllowed depending on the modifier keys,\n // therefore the following modifier keys will only affect other operating systems.\n if (effects.length === 0) {\n return 'none';\n }\n\n if (event.ctrlKey && effects.indexOf('copy') !== -1) {\n return 'copy';\n }\n\n if (event.altKey && effects.indexOf('link') !== -1) {\n return 'link';\n }\n\n return effects[0] as DropEffect;\n}\n\nexport function getDndType(event: DragEvent): string | undefined {\n if (_dndState.isDragging === true) {\n return _dndState.type;\n }\n\n const mimeType = getWellKnownMimeType(event);\n\n if (mimeType === null) {\n return undefined;\n }\n\n return mimeType.substring(CUSTOM_MIME_TYPE.length + 1) || undefined;\n}\n\nexport function isExternalDrag(): boolean {\n return _dndState.isDragging === false;\n}\n\nexport const dndState: Readonly<DndState> = _dndState as Readonly<DndState>;\n","import {\n AfterViewInit,\n Directive,\n ElementRef,\n EventEmitter,\n forwardRef,\n HostBinding,\n HostListener,\n inject,\n Input,\n NgZone,\n OnDestroy,\n OnInit,\n Output,\n Renderer2,\n} from '@angular/core';\nimport { DndHandleDirective } from './dnd-handle.directive';\nimport { dndState, endDrag, startDrag } from './dnd-state';\nimport { EffectAllowed } from './dnd-types';\nimport {\n calculateDragImageOffset,\n DndDragImageOffsetFunction,\n DndEvent,\n setDragData,\n setDragImage,\n} from './dnd-utils';\n\n@Directive({ selector: '[dndDragImageRef]', standalone: true })\nexport class DndDragImageRefDirective implements OnInit {\n dndDraggableDirective = inject(forwardRef(() => DndDraggableDirective));\n elementRef: ElementRef<HTMLElement> = inject(ElementRef);\n\n ngOnInit() {\n this.dndDraggableDirective.registerDragImage(this.elementRef);\n }\n}\n\n@Directive({ selector: '[dndDraggable]', standalone: true })\nexport class DndDraggableDirective implements AfterViewInit, OnDestroy {\n @Input() dndDraggable: any;\n @Input() dndEffectAllowed: EffectAllowed = 'copy';\n @Input() dndType?: string;\n @Input() dndDraggingClass = 'dndDragging';\n @Input() dndDraggingSourceClass = 'dndDraggingSource';\n @Input() dndDraggableDisabledClass = 'dndDraggableDisabled';\n @Input() dndDragImageOffsetFunction: DndDragImageOffsetFunction =\n calculateDragImageOffset;\n\n @Output() readonly dndStart: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndDrag: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndEnd: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndMoved: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndCopied: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndLinked: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n @Output() readonly dndCanceled: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n\n @HostBinding('attr.draggable') draggable = true;\n\n private dndHandle?: DndHandleDirective;\n private dndDragImageElementRef?: ElementRef;\n private dragImage: Element | undefined;\n private isDragStarted: boolean = false;\n\n private elementRef: ElementRef<HTMLElement> = inject(ElementRef);\n private renderer = inject(Renderer2);\n private ngZone = inject(NgZone);\n\n @Input() set dndDisableIf(value: boolean) {\n this.draggable = !value;\n\n if (this.draggable) {\n this.renderer.removeClass(\n this.elementRef.nativeElement,\n this.dndDraggableDisabledClass\n );\n } else {\n this.renderer.addClass(\n this.elementRef.nativeElement,\n this.dndDraggableDisabledClass\n );\n }\n }\n\n @Input() set dndDisableDragIf(value: boolean) {\n this.dndDisableIf = value;\n }\n\n ngAfterViewInit(): void {\n this.ngZone.runOutsideAngular(() => {\n this.elementRef.nativeElement.addEventListener(\n 'drag',\n this.dragEventHandler\n );\n });\n }\n\n ngOnDestroy(): void {\n this.elementRef.nativeElement.removeEventListener(\n 'drag',\n this.dragEventHandler\n );\n if (this.isDragStarted) {\n endDrag();\n }\n }\n\n @HostListener('dragstart', ['$event']) onDragStart(event: DndEvent): boolean {\n if (!this.draggable) {\n return false;\n }\n\n // check if there is dnd handle and if the dnd handle was used to start the drag\n if (this.dndHandle != null && event._dndUsingHandle == null) {\n event.stopPropagation();\n return false;\n }\n\n // initialize global state\n startDrag(event, this.dndEffectAllowed, this.dndType);\n\n this.isDragStarted = true;\n\n setDragData(\n event,\n { data: this.dndDraggable, type: this.dndType },\n dndState.effectAllowed!\n );\n\n this.dragImage = this.determineDragImage();\n\n // set dragging css class prior to setDragImage so styles are applied before\n // TODO breaking change: add class to elementRef rather than drag image which could be another element\n this.renderer.addClass(this.dragImage, this.dndDraggingClass);\n\n // set custom dragimage if present\n // set dragimage if drag is started from dndHandle\n if (this.dndDragImageElementRef != null || event._dndUsingHandle != null) {\n setDragImage(event, this.dragImage, this.dndDragImageOffsetFunction);\n }\n\n // add dragging source css class on first drag event\n const unregister = this.renderer.listen(\n this.elementRef.nativeElement,\n 'drag',\n () => {\n this.renderer.addClass(\n this.elementRef.nativeElement,\n this.dndDraggingSourceClass\n );\n unregister();\n }\n );\n\n this.dndStart.emit(event);\n\n event.stopPropagation();\n\n setTimeout(() => {\n if (this.isDragStarted) {\n this.renderer.setStyle(this.dragImage, 'pointer-events', 'none');\n }\n }, 100);\n\n return true;\n }\n\n onDrag(event: DragEvent) {\n this.dndDrag.emit(event);\n }\n\n @HostListener('dragend', ['$event']) onDragEnd(event: DragEvent) {\n if (!this.draggable || !this.isDragStarted) {\n return;\n }\n // get drop effect from custom stored state as its not reliable across browsers\n const dropEffect = dndState.dropEffect;\n\n this.renderer.setStyle(this.dragImage, 'pointer-events', 'unset');\n\n let dropEffectEmitter: EventEmitter<DragEvent>;\n\n switch (dropEffect) {\n case 'copy':\n dropEffectEmitter = this.dndCopied;\n break;\n\n case 'link':\n dropEffectEmitter = this.dndLinked;\n break;\n\n case 'move':\n dropEffectEmitter = this.dndMoved;\n break;\n\n default:\n dropEffectEmitter = this.dndCanceled;\n break;\n }\n\n dropEffectEmitter.emit(event);\n this.dndEnd.emit(event);\n\n // reset global state\n endDrag();\n\n this.isDragStarted = false;\n\n this.renderer.removeClass(this.dragImage, this.dndDraggingClass);\n\n // IE9 special hammering\n window.setTimeout(() => {\n this.renderer.removeClass(\n this.elementRef.nativeElement,\n this.dndDraggingSourceClass\n );\n }, 0);\n\n event.stopPropagation();\n }\n\n registerDragHandle(handle: DndHandleDirective | undefined) {\n this.dndHandle = handle;\n }\n\n registerDragImage(elementRef: ElementRef | undefined) {\n this.dndDragImageElementRef = elementRef;\n }\n\n private readonly dragEventHandler: (event: DragEvent) => void = (\n event: DragEvent\n ) => this.onDrag(event);\n\n private determineDragImage(): Element {\n // evaluate custom drag image existence\n if (typeof this.dndDragImageElementRef !== 'undefined') {\n return this.dndDragImageElementRef.nativeElement as Element;\n } else {\n return this.elementRef.nativeElement;\n }\n }\n}\n","import {\n AfterViewInit,\n ContentChild,\n Directive,\n ElementRef,\n EventEmitter,\n HostListener,\n inject,\n Input,\n NgZone,\n OnDestroy,\n OnInit,\n Output,\n Renderer2,\n} from '@angular/core';\nimport {\n getDndType,\n getDropEffect,\n isExternalDrag,\n setDropEffect,\n} from './dnd-state';\nimport { DropEffect, EffectAllowed } from './dnd-types';\nimport {\n DndEvent,\n DragDropData,\n getDirectChildElement,\n getDropData,\n shouldPositionPlaceholderBeforeElement,\n} from './dnd-utils';\n\nexport interface DndDropEvent {\n event: DragEvent;\n dropEffect: DropEffect;\n isExternal: boolean;\n data?: any;\n index?: number;\n type?: any;\n}\n\n@Directive({ selector: '[dndPlaceholderRef]', standalone: true })\nexport class DndPlaceholderRefDirective implements OnInit {\n readonly elementRef: ElementRef<HTMLElement> = inject(ElementRef);\n\n ngOnInit() {\n // placeholder has to be \"invisible\" to the cursor, or it would interfere with the dragover detection for the same dropzone\n this.elementRef.nativeElement.style.pointerEvents = 'none';\n }\n}\n\n@Directive({ selector: '[dndDropzone]', standalone: true })\nexport class DndDropzoneDirective implements AfterViewInit, OnDestroy {\n @Input() dndDropzone?: string[] | '' = '';\n\n @Input() dndEffectAllowed: EffectAllowed = 'uninitialized';\n\n @Input() dndAllowExternal: boolean = false;\n\n @Input() dndHorizontal: boolean = false;\n\n @Input() dndDragoverClass: string = 'dndDragover';\n\n @Input() dndDropzoneDisabledClass = 'dndDropzoneDisabled';\n\n @Output() readonly dndDragover: EventEmitter<DragEvent> =\n new EventEmitter<DragEvent>();\n\n @Output() readonly dndDrop: EventEmitter<DndDropEvent> =\n new EventEmitter<DndDropEvent>();\n\n @ContentChild(DndPlaceholderRefDirective)\n private readonly dndPlaceholderRef?: DndPlaceholderRefDirective;\n\n private placeholder: Element | null = null;\n\n private disabled: boolean = false;\n\n private enterCount: number = 0;\n\n private ngZone = inject(NgZone);\n private elementRef: ElementRef = inject(ElementRef);\n private renderer = inject(Renderer2);\n\n @Input() set dndDisableIf(value: boolean) {\n this.disabled = value;\n\n if (this.disabled) {\n this.renderer.addClass(\n this.elementRef.nativeElement,\n this.dndDropzoneDisabledClass\n );\n } else {\n this.renderer.removeClass(\n this.elementRef.nativeElement,\n this.dndDropzoneDisabledClass\n );\n }\n }\n\n @Input() set dndDisableDropIf(value: boolean) {\n this.dndDisableIf = value;\n }\n\n ngAfterViewInit(): void {\n this.placeholder = this.tryGetPlaceholder();\n\n this.removePlaceholderFromDOM();\n\n this.ngZone.runOutsideAngular(() => {\n this.elementRef.nativeElement.addEventListener(\n 'dragenter',\n this.dragEnterEventHandler\n );\n this.elementRef.nativeElement.addEventListener(\n 'dragover',\n this.dragOverEventHandler\n );\n this.elementRef.nativeElement.addEventListener(\n 'dragleave',\n this.dragLeaveEventHandler\n );\n });\n }\n\n ngOnDestroy(): void {\n this.elementRef.nativeElement.removeEventListener(\n 'dragenter',\n this.dragEnterEventHandler\n );\n this.elementRef.nativeElement.removeEventListener(\n 'dragover',\n this.dragOverEventHandler\n );\n this.elementRef.nativeElement.removeEventListener(\n 'dragleave',\n this.dragLeaveEventHandler\n );\n }\n\n onDragEnter(event: DndEvent) {\n this.enterCount++;\n\n // check if another dropzone is activated\n if (event._dndDropzoneActive === true) {\n this.removePlaceholderFromDOM();\n this.renderer.removeClass(\n this.elementRef.nativeElement,\n this.dndDragoverClass\n );\n return;\n }\n\n // set as active if the target element is inside this dropzone\n if (event._dndDropzoneActive == null) {\n if (this.elementRef.nativeElement.contains(event.target)) {\n event._dndDropzoneActive = true;\n }\n }\n\n // check if this drag event is allowed to drop on this dropzone\n const type = getDndType(event);\n if (!this.isDropAllowed(type)) {\n return;\n }\n\n // allow the dragenter\n event.preventDefault();\n }\n\n onDragOver(event: DragEvent) {\n // With nested dropzones, we want to ignore this event if a child dropzone\n // has already handled a dragover. Historically, event.stopPropagation() was\n // used to prevent this bubbling, but that prevents any dragovers outside the\n // ngx-drag-drop component, and stops other use cases such as scrolling on drag.\n // Instead, we can check if the event was already prevented by a child and bail early.\n if (event.defaultPrevented) {\n return;\n }\n\n // check if this drag event is allowed to drop on this dropzone\n const type = getDndType(event);\n if (!this.isDropAllowed(type)) {\n return;\n }\n\n this.checkAndUpdatePlaceholderPosition(event);\n\n const dropEffect = getDropEffect(event, this.dndEffectAllowed);\n\n if (dropEffect === 'none') {\n this.cleanupDragoverState();\n return;\n }\n\n // allow the dragover\n event.preventDefault();\n\n // set the drop effect\n setDropEffect(event, dropEffect);\n\n this.dndDragover.emit(event);\n\n this.renderer.addClass(\n this.elementRef.nativeElement,\n this.dndDragoverClass\n );\n }\n\n @HostListener('drop', ['$event']) onDrop(event: DragEvent) {\n try {\n // check if this drag event is allowed to drop on this dropzone\n const type = getDndType(event);\n if (!this.isDropAllowed(type)) {\n return;\n }\n\n const data: DragDropData = getDropData(event, isExternalDrag());\n\n if (!this.isDropAllowed(data.type)) {\n return;\n }\n\n // signal custom drop handling\n event.preventDefault();\n\n const dropEffect = getDropEffect(event, this.dndEffectAllowed);\n\n setDropEffect(event, dropEffect);\n\n if (dropEffect === 'none') {\n return;\n }\n\n const dropIndex = this.getPlaceholderIndex();\n\n // if for whatever reason the placeholder is not present in the DOM but it should be there\n // we don't allow/emit the drop event since it breaks the contract\n // seems to only happen if drag and drop is executed faster than the DOM updates\n if (dropIndex === -1) {\n return;\n }\n\n this.dndDrop.emit({\n event: event,\n dropEffect: dropEffect,\n isExternal: isExternalDrag(),\n data: data.data,\n index: dropIndex,\n type: type,\n });\n\n event.stopPropagation();\n } finally {\n this.cleanupDragoverState();\n }\n }\n\n onDragLeave(event: DndEvent) {\n this.enterCount--;\n\n // only clean up when all enter/leave pairs are balanced (cursor has truly left)\n if (this.enterCount > 0) {\n return;\n }\n\n this.cleanupDragoverState();\n\n // cleanup drop effect when leaving dropzone\n setDropEffect(event, 'none');\n }\n\n private readonly dragEnterEventHandler: (event: DragEvent) => void = (\n event: DragEvent\n ) => this.onDragEnter(event);\n\n private readonly dragOverEventHandler: (event: DragEvent) => void = (\n event: DragEvent\n ) => this.onDragOver(event);\n\n private readonly dragLeaveEventHandler: (event: DragEvent) => void = (\n event: DragEvent\n ) => this.onDragLeave(event);\n\n private isDropAllowed(type?: string): boolean {\n // dropzone is disabled -> deny it\n if (this.disabled) {\n return false;\n }\n\n // if drag did not start from our directive\n // and external drag sources are not allowed -> deny it\n if (isExternalDrag() && !this.dndAllowExternal) {\n return false;\n }\n\n // no filtering by types -> allow it\n if (!this.dndDropzone) {\n return true;\n }\n\n // no type set -> allow it\n if (!type) {\n return true;\n }\n\n if (!Array.isArray(this.dndDropzone)) {\n throw new Error(\n 'dndDropzone: bound value to [dndDropzone] must be an array!'\n );\n }\n\n // if dropzone contains type -> allow it\n return this.dndDropzone.indexOf(type) !== -1;\n }\n\n private tryGetPlaceholder(): Element | null {\n if (typeof this.dndPlaceholderRef !== 'undefined') {\n return this.dndPlaceholderRef.elementRef.nativeElement as Element;\n }\n\n // TODO nasty workaround needed because if ng-container / template is used @ContentChild() or DI will fail because\n // of wrong context see angular bug https://github.com/angular/angular/issues/13517\n return this.elementRef.nativeElement.querySelector('[dndPlaceholderRef]');\n }\n\n private removePlaceholderFromDOM() {\n if (this.placeholder !== null && this.placeholder.parentNode !== null) {\n this.placeholder.parentNode.removeChild(this.placeholder);\n }\n }\n\n private checkAndUpdatePlaceholderPosition(event: DragEvent): void {\n if (this.placeholder === null) {\n return;\n }\n\n // make sure the placeholder is in the DOM\n if (this.placeholder.parentNode !== this.elementRef.nativeElement) {\n this.renderer.appendChild(\n this.elementRef.nativeElement,\n this.placeholder\n );\n }\n\n // update the position if the event originates from a child element of the dropzone\n const directChild = getDirectChildElement(\n this.elementRef.nativeElement,\n event.target as Element\n );\n\n // early exit if no direct child or direct child is placeholder\n if (directChild === null || directChild === this.placeholder) {\n return;\n }\n\n const positionPlaceholderBeforeDirectChild =\n shouldPositionPlaceholderBeforeElement(\n event,\n directChild,\n this.dndHorizontal\n );\n\n if (positionPlaceholderBeforeDirectChild) {\n // do insert before only if necessary\n if (directChild.previousSibling !== this.placeholder) {\n this.renderer.insertBefore(\n this.elementRef.nativeElement,\n this.placeholder,\n directChild\n );\n }\n } else {\n // do insert after only if necessary\n if (directChild.nextSibling !== this.placeholder) {\n this.renderer.insertBefore(\n this.elementRef.nativeElement,\n this.placeholder,\n directChild.nextSibling\n );\n }\n }\n }\n\n private getPlaceholderIndex(): number | undefined {\n if (this.placeholder === null) {\n return undefined;\n }\n\n const element = this.elementRef.nativeElement as HTMLElement;\n\n return Array.prototype.indexOf.call(element.children, this.placeholder);\n }\n\n private cleanupDragoverState() {\n this.renderer.removeClass(\n this.elementRef.nativeElement,\n this.dndDragoverClass\n );\n\n this.enterCount = 0;\n this.removePlaceholderFromDOM();\n }\n}\n","import {\n Directive,\n HostBinding,\n HostListener,\n inject,\n OnDestroy,\n OnInit,\n} from '@angular/core';\nimport { DndDraggableDirective } from './dnd-draggable.directive';\nimport { DndEvent } from './dnd-utils';\n\n@Directive({ selector: '[dndHandle]', standalone: true })\nexport class DndHandleDirective implements OnInit, OnDestroy {\n @HostBinding('attr.draggable') draggable = true;\n\n dndDraggableDirective = inject(DndDraggableDirective);\n\n ngOnInit() {\n this.dndDraggableDirective.registerDragHandle(this);\n }\n\n ngOnDestroy(): void {\n this.dndDraggableDirective.registerDragHandle(undefined);\n }\n\n @HostListener('dragstart', ['$event'])\n @HostListener('dragend', ['$event'])\n onDragEvent(event: DndEvent) {\n event._dndUsingHandle = true;\n }\n}\n","import { NgModule } from '@angular/core';\nimport {\n DndDraggableDirective,\n DndDragImageRefDirective,\n} from './dnd-draggable.directive';\nimport {\n DndDropzoneDirective,\n DndPlaceholderRefDirective,\n} from './dnd-dropzone.directive';\nimport { DndHandleDirective } from './dnd-handle.directive';\n\n@NgModule({\n exports: [\n DndDraggableDirective,\n DndDropzoneDirective,\n DndHandleDirective,\n DndPlaceholderRefDirective,\n DndDragImageRefDirective,\n ],\n imports: [\n DndDragImageRefDirective,\n DndDropzoneDirective,\n DndHandleDirective,\n DndPlaceholderRefDirective,\n DndDraggableDirective,\n ],\n})\nexport class DndModule {}\n","/*\n * Public API Surface of dnd\n */\n\nexport * from './lib/dnd-draggable.directive';\nexport * from './lib/dnd-dropzone.directive';\nexport * from './lib/dnd-handle.directive';\nexport * from './lib/dnd-types';\nexport { DndDragImageOffsetFunction } from './lib/dnd-utils';\nexport * from './lib/dnd.module';\n","/**\n * Generated bundle index. Do not edit.\n */\n\nexport * from 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