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@hello-pangea/dnd

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@hello-pangea/dnd

Beautiful and accessible drag and drop for lists with React

  • 17.0.0
  • latest
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increased by6.62%
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What is @hello-pangea/dnd?

@hello-pangea/dnd is a powerful and flexible drag-and-drop library for React. It allows developers to create complex drag-and-drop interfaces with ease, supporting features like reordering lists, moving items between lists, and more.

What are @hello-pangea/dnd's main functionalities?

Reordering a List

This code demonstrates how to reorder items in a list using @hello-pangea/dnd. It sets up a drag-and-drop context, defines a reorder function, and handles the drag end event to update the state with the reordered items.

import React from 'react';
import { DragDropContext, Droppable, Draggable } from '@hello-pangea/dnd';

const reorder = (list, startIndex, endIndex) => {
  const result = Array.from(list);
  const [removed] = result.splice(startIndex, 1);
  result.splice(endIndex, 0, removed);
  return result;
};

const App = () => {
  const [items, setItems] = React.useState(['Item 1', 'Item 2', 'Item 3']);

  const onDragEnd = (result) => {
    if (!result.destination) return;
    const reorderedItems = reorder(items, result.source.index, result.destination.index);
    setItems(reorderedItems);
  };

  return (
    <DragDropContext onDragEnd={onDragEnd}>
      <Droppable droppableId="droppable">
        {(provided) => (
          <div {...provided.droppableProps} ref={provided.innerRef}>
            {items.map((item, index) => (
              <Draggable key={item} draggableId={item} index={index}>
                {(provided) => (
                  <div
                    ref={provided.innerRef}
                    {...provided.draggableProps}
                    {...provided.dragHandleProps}
                  >
                    {item}
                  </div>
                )}
              </Draggable>
            ))}
            {provided.placeholder}
          </div>
        )}
      </Droppable>
    </DragDropContext>
  );
};

export default App;

Moving Items Between Lists

This code demonstrates how to move items between two lists using @hello-pangea/dnd. It sets up a drag-and-drop context, defines a move function, and handles the drag end event to update the state with the moved items.

import React from 'react';
import { DragDropContext, Droppable, Draggable } from '@hello-pangea/dnd';

const move = (source, destination, droppableSource, droppableDestination) => {
  const sourceClone = Array.from(source);
  const destClone = Array.from(destination);
  const [removed] = sourceClone.splice(droppableSource.index, 1);
  destClone.splice(droppableDestination.index, 0, removed);

  const result = {};
  result[droppableSource.droppableId] = sourceClone;
  result[droppableDestination.droppableId] = destClone;

  return result;
};

const App = () => {
  const [state, setState] = React.useState({
    droppable1: ['Item 1', 'Item 2', 'Item 3'],
    droppable2: ['Item 4', 'Item 5', 'Item 6']
  });

  const onDragEnd = (result) => {
    const { source, destination } = result;
    if (!destination) return;
    if (source.droppableId === destination.droppableId) return;
    const movedItems = move(
      state[source.droppableId],
      state[destination.droppableId],
      source,
      destination
    );
    setState({
      ...state,
      ...movedItems
    });
  };

  return (
    <DragDropContext onDragEnd={onDragEnd}>
      {Object.keys(state).map((listId) => (
        <Droppable key={listId} droppableId={listId}>
          {(provided) => (
            <div {...provided.droppableProps} ref={provided.innerRef}>
              {state[listId].map((item, index) => (
                <Draggable key={item} draggableId={item} index={index}>
                  {(provided) => (
                    <div
                      ref={provided.innerRef}
                      {...provided.draggableProps}
                      {...provided.dragHandleProps}
                    >
                      {item}
                    </div>
                  )}
                </Draggable>
              ))}
              {provided.placeholder}
            </div>
          )}
        </Droppable>
      ))}
    </DragDropContext>
  );
};

export default App;

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Package last updated on 14 Sep 2024

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