preact-arco-design/es/Upload/trigger-node.js

Arco Design React UI Library.

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    return t;
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};

var __read = this && this.__read || function (o, n) {
  var m = typeof Symbol === "function" && o[Symbol.iterator];
  if (!m) return o;
  var i = m.call(o),
      r,
      ar = [],
      e;

  try {
    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
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      error: error
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      if (r && !r.done && (m = i["return"])) m.call(i);
    } finally {
      if (e) throw e.error;
    }
  }

  return ar;
};

import React, { useState, useContext, useEffect } from "preact/compat";
import cs from "../_util/classNames";
import Button from "../Button";
import IconUpload from "../../icon/react-icon/IconUpload";
import IconPlus from "../../icon/react-icon/IconPlus";
import { ConfigContext } from "../ConfigProvider";
import { getFiles, loopDirectory } from "./util";

var TriggerNode = function TriggerNode(props) {
  var _a, _b;

  var locale = useContext(ConfigContext).locale;

  var _c = __read(useState(false), 2),
      isDragging = _c[0],
      setIsDragging = _c[1];

  var _d = __read(useState(0), 2),
      dragEnterCount = _d[0],
      setDragEnterCount = _d[1]; // the number of times ondragenter was triggered


  var tip = props.tip,
      children = props.children,
      disabled = props.disabled,
      drag = props.drag,
      listType = props.listType,
      prefixCls = props.prefixCls,
      accept = props.accept,
      multiple = props.multiple;
  var nodeProps = {
    disabled: disabled
  };
  useEffect(function () {
    setDragEnterCount(0);
  }, [isDragging]);
  return children === null ? null : React.createElement("div", {
    className: "".concat(prefixCls, "-trigger"),
    onClick: disabled ? undefined : props.onClick,
    onDragEnter: function onDragEnter() {
      setDragEnterCount(dragEnterCount + 1);
    },
    onDragLeave: function onDragLeave(e) {
      e.preventDefault();
      /**  When dragging into a child element, it will trigger the dragleave and dragenter of the parent node.
       * Record the number of triggers of dragenter, and subtract 1 each time dragleave.
       * When dragEnterCount is equal to 0,  it means that the mouse has left the current node, then the drag state is cancelled.
       * https://github.com/arco-design/arco-design/issues/210
       */

      if (dragEnterCount === 0) {
        setIsDragging(false);
      } else {
        setDragEnterCount(dragEnterCount - 1);
      }
    },
    onDrop: function onDrop(e) {
      e.preventDefault();

      if (!disabled) {
        setIsDragging(false);

        if (props.directory) {
          loopDirectory(e.dataTransfer.items, accept, function (files) {
            props.onDragFiles && props.onDragFiles(files);
          });
        } else {
          var files = getFiles(e.dataTransfer.files, accept);
          props.onDragFiles && props.onDragFiles(multiple ? files : files.slice(0, 1));
        }

        props.onDrop && props.onDrop(e);
      }
    },
    onDragOver: function onDragOver(e) {
      e.preventDefault();

      if (!disabled && !isDragging) {
        setIsDragging(true);
      }
    }
  }, React.isValidElement(children) ? React.createElement("div", {
    className: cs((_a = {}, _a["".concat(prefixCls, "-trigger-custom-active")] = isDragging, _a))
  }, React.cloneElement(children, nodeProps)) : listType === 'picture-card' ? React.createElement("div", {
    className: "".concat(prefixCls, "-trigger-picture-wrapper")
  }, React.createElement("div", {
    className: "".concat(prefixCls, "-trigger-picture")
  }, React.createElement("div", {
    className: "".concat(prefixCls, "-trigger-picture-text")
  }, React.createElement(IconPlus, null)))) : drag ? React.createElement("div", {
    className: cs("".concat(prefixCls, "-trigger-drag"), (_b = {}, _b["".concat(prefixCls, "-trigger-drag-active")] = isDragging, _b))
  }, React.createElement(IconPlus, null), React.createElement("p", {
    className: "".concat(prefixCls, "-trigger-drag-text")
  }, isDragging ? locale.Upload.dragHover : locale.Upload.drag), tip && React.createElement("div", {
    className: "".concat(prefixCls, "-trigger-tip")
  }, tip)) : React.createElement(Button, __assign({}, nodeProps, {
    type: "primary",
    className: "".concat(prefixCls, "-trigger-with-icon")
  }), React.createElement(IconUpload, null), locale.Upload.upload));
};

export default TriggerNode;