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fix(web): Simplify the logic for tag drag and dropping
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,89 +1,48 @@ | ||
| import React from "react"; | ||
| import { DraggableData, DraggableEvent } from "react-draggable"; | ||
|
|
||
| export interface DragState { | ||
| // The id of the element that is being dragged | ||
| dragSourceId: string | null; | ||
| // The id of the element that is currently being hovered over | ||
| dragTargetId: string | null; | ||
| // The position of the elements being dragged such that on drag over, we can revert the position. | ||
| initialX: number; | ||
| initialY: number; | ||
| } | ||
|
|
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| export interface DragAndDropFunctions { | ||
| handleDragStart: (e: DraggableEvent, data: DraggableData) => void; | ||
| handleDrag: (e: DraggableEvent) => void; | ||
| handleDragEnd: () => void; | ||
| dragState: DragState; | ||
| } | ||
|
|
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| export function useDragAndDrop( | ||
| dragSourceIdAttribute: string, | ||
| dragTargetIdAttribute: string, | ||
| callback: (dragSourceId: string, dragTargetId: string) => void, | ||
| ): DragAndDropFunctions { | ||
| const initialState: DragState = { | ||
| dragSourceId: null, | ||
| dragTargetId: null, | ||
| initialX: 0, | ||
| initialY: 0, | ||
| }; | ||
|
|
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| let currentState: DragState = initialState; | ||
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| function handleDragStart(e: DraggableEvent, data: DraggableData): void { | ||
| const { node } = data; | ||
| const id = node.getAttribute(dragSourceIdAttribute); | ||
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| currentState = { | ||
| ...initialState, | ||
| dragSourceId: id, | ||
| initialX: data.x, | ||
| initialY: data.y, | ||
| }; | ||
| } | ||
|
|
||
| function handleDrag(e: DraggableEvent): void { | ||
| const { dragTargetId } = currentState; | ||
| const { target } = e; | ||
|
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||
| // Important according to the sample I found | ||
| e.preventDefault(); | ||
|
|
||
| if (target) { | ||
| const id = (target as HTMLElement).getAttribute(dragTargetIdAttribute); | ||
|
|
||
| if (id !== dragTargetId) { | ||
| currentState.dragTargetId = id; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| function handleDragEnd(): void { | ||
| const { dragSourceId, dragTargetId } = currentState; | ||
|
|
||
| if (dragSourceId && dragTargetId && dragSourceId !== dragTargetId) { | ||
| /* | ||
| onDragOver: (dragSourceId: string, dragTargetId: string) => void, | ||
| ) { | ||
| const [dragSourceId, setDragSourceId] = React.useState<string | null>(null); | ||
|
|
||
| const handleDragStart = React.useCallback( | ||
| (_e: DraggableEvent, { node }: DraggableData) => { | ||
| const id = node.getAttribute(dragSourceIdAttribute); | ||
| setDragSourceId(id); | ||
| }, | ||
| [], | ||
| ); | ||
|
|
||
| const handleDragEnd = React.useCallback( | ||
| (e: DraggableEvent) => { | ||
| const { target } = e; | ||
| const dragTargetId = (target as HTMLElement).getAttribute( | ||
| dragTargetIdAttribute, | ||
| ); | ||
|
|
||
| if (dragSourceId && dragTargetId && dragSourceId !== dragTargetId) { | ||
| /* | ||
| As Draggable tries to setState when the | ||
| component is unmounted, it is needed to | ||
| push onCombine to the event loop queue. | ||
| onCombine would be run after setState on | ||
| Draggable so it would fix the issue until | ||
| they fix it on their end. | ||
| */ | ||
| setTimeout(() => { | ||
| console.log(dragSourceId, dragTargetId); | ||
| callback(dragSourceId, dragTargetId); | ||
| }, 0); | ||
| } | ||
|
|
||
| currentState = initialState; | ||
| } | ||
| setTimeout(() => { | ||
| onDragOver(dragSourceId, dragTargetId); | ||
| }, 0); | ||
| } | ||
| setDragSourceId(null); | ||
| }, | ||
| [dragSourceId, onDragOver], | ||
| ); | ||
|
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||
| return { | ||
| dragState: currentState, | ||
| handleDragStart, | ||
| handleDrag, | ||
| handleDragEnd, | ||
| }; | ||
| } |