solidjs-dropzone/dist/server.cjs

Dropzone Adapter For SOlidJS

'use strict';

var solidJs = require('solid-js');
var store = require('solid-js/store');
var fileSelector = require('file-selector');
var accepts = require('attr-accept');

function _interopDefault (e) { return e && e.__esModule ? e : { default: e }; }

var accepts__default = /*#__PURE__*/_interopDefault(accepts);

// src/index.tsx
var noop = () => {
};
var getInitialState = () => ({
  isFocused: false,
  isFileDialogActive: false,
  isDragActive: false,
  isDragAccept: false,
  isDragReject: false,
  acceptedFiles: [],
  fileRejections: []
});
exports.createDropzone = (_props = {}) => {
  const props = solidJs.mergeProps({
    disabled: false,
    getFilesFromEvent: fileSelector.fromEvent,
    maxSize: Infinity,
    minSize: 0,
    multiple: true,
    maxFiles: 0,
    preventDropOnDocument: true,
    noClick: false,
    noKeyboard: false,
    noDrag: false,
    noDragEventsBubbling: false,
    validator: null,
    useFsAccessApi: false,
    autoFocus: false,
    accept: ""
  }, _props);
  const [state, setState] = store.createStore(getInitialState());
  const acceptAttr = solidJs.createMemo(() => acceptPropAsAcceptAttr(props.accept));
  const pickerTypes = solidJs.createMemo(() => props.useFsAccessApi ? pickerOptionsFromAccept(props.accept) : void 0);
  const [rootRef, setRootRef] = solidJs.createSignal();
  const [inputRef, setInputRef] = solidJs.createSignal();
  let fsAccessApiWorks = typeof window !== "undefined" && canUseFileSystemAccessAPI();
  const onWindowFocus = () => {
    if (!fsAccessApiWorks && state.isFileDialogActive) {
      setTimeout(() => {
        const input = inputRef();
        if (input) {
          const {
            files
          } = input;
          if (!files?.length) {
            setState("isFileDialogActive", false);
            props.onFileDialogCancel?.();
          }
        }
      }, 300);
    }
  };
  solidJs.createEffect(() => {
    window.addEventListener("focus", onWindowFocus, false);
    solidJs.onCleanup(() => {
      window.removeEventListener("focus", onWindowFocus, false);
    });
  });
  let dragTargets = [];
  const onDocumentDrop = (event) => {
    const root = rootRef();
    if (root && root.contains(event.target)) {
      return;
    }
    event.preventDefault();
    dragTargets = [];
  };
  solidJs.createEffect(() => {
    if (!props.preventDropOnDocument) {
      document.addEventListener("dragover", onDocumentDragOver, false);
      document.addEventListener("drop", onDocumentDrop, false);
      solidJs.onCleanup(() => {
        document.removeEventListener("dragover", onDocumentDragOver, false);
        document.removeEventListener("drop", onDocumentDrop, false);
      });
    }
  });
  solidJs.createEffect(() => {
    if (!props.disabled && props.autoFocus) {
      rootRef()?.focus();
    }
  });
  const onError = (error) => {
    if (props.onError) {
      props.onError(error);
    } else {
      if (solidJs.DEV) {
        console.error(error);
      }
    }
  };
  const stopPropagation = (event) => {
    if (props.noDragEventsBubbling) {
      event.stopPropagation();
    }
  };
  const onDragEnter = (event) => {
    event.preventDefault();
    stopPropagation(event);
    dragTargets = [...dragTargets, event.target];
    if (isEvtWithFiles(event)) {
      Promise.resolve(props.getFilesFromEvent(event)).then((files) => {
        if (isPropagationStopped(event) && !props.noDragEventsBubbling) {
          return;
        }
        const fileCount = files.length;
        const isDragAccept = fileCount > 0 && allFilesAccepted({
          files: files.map((fileOrDataTransferItem) => fileOrDataTransferItem instanceof File ? fileOrDataTransferItem : (
            // `file-selector`
            fileOrDataTransferItem.getAsFile()
          )).filter(Boolean),
          accept: props.accept,
          minSize: props.minSize,
          maxSize: props.maxSize,
          multiple: props.multiple,
          maxFiles: props.maxFiles,
          validator: props.validator
        });
        const isDragReject = fileCount > 0 && !isDragAccept;
        setState({
          isDragAccept,
          isDragReject,
          isDragActive: true
        });
        props.onDragEnter?.(event);
      }).catch((e) => onError(e));
    }
  };
  const onDragOver = (event) => {
    event.preventDefault();
    stopPropagation(event);
    const hasFiles = isEvtWithFiles(event);
    if (hasFiles && event.dataTransfer) {
      try {
        event.dataTransfer.dropEffect = "copy";
      } catch {
      }
    }
    if (hasFiles) {
      props.onDragOver?.(event);
    }
    return false;
  };
  const onDragLeave = (event) => {
    event.preventDefault();
    stopPropagation(event);
    const root = rootRef();
    const targets = dragTargets.filter((target) => root?.contains(target));
    const targetIdx = targets.indexOf(event.target);
    if (targetIdx !== -1) {
      targets.splice(targetIdx, 1);
    }
    dragTargets = targets;
    if (targets.length > 0) {
      return;
    }
    setState({
      isDragActive: false,
      isDragAccept: false,
      isDragReject: false
    });
    if (isEvtWithFiles(event)) {
      props.onDragLeave?.(event);
    }
  };
  const setFiles = (files, event) => {
    const acceptedFiles = [];
    const fileRejections = [];
    files.forEach((file) => {
      const [accepted, acceptError] = fileAccepted(file, props.accept);
      const [sizeMatch, sizeError] = fileMatchSize(file, props.minSize, props.maxSize);
      const customErrors = props.validator ? props.validator(file) : null;
      if (accepted && sizeMatch && !customErrors) {
        acceptedFiles.push(file);
      } else {
        let errors = [acceptError, sizeError];
        if (customErrors) {
          errors = errors.concat(customErrors);
        }
        fileRejections.push({
          file,
          errors: errors.filter(Boolean)
        });
      }
    });
    if (!props.multiple && acceptedFiles.length > 1 || props.multiple && props.maxFiles >= 1 && acceptedFiles.length > props.maxFiles) {
      acceptedFiles.forEach((file) => {
        fileRejections.push({
          file,
          errors: [getTooManyFilesRejectionErr()]
        });
      });
      acceptedFiles.splice(0);
    }
    setState({
      acceptedFiles,
      fileRejections
    });
    props.onDrop?.(acceptedFiles, fileRejections, event);
  };
  const onDrop = (event) => {
    event.preventDefault();
    stopPropagation(event);
    dragTargets = [];
    if (isEvtWithFiles(event)) {
      Promise.resolve(props.getFilesFromEvent(event)).then((files) => {
        if (isPropagationStopped(event) && !props.noDragEventsBubbling) {
          return;
        }
        setFiles(files, event);
      }).catch((e) => onError(e));
    }
    setState(getInitialState());
  };
  const openFileDialog = () => {
    if (fsAccessApiWorks) {
      setState("isFileDialogActive", true);
      props.onFileDialogOpen?.();
      const opts = {
        multiple: props.multiple,
        types: pickerTypes()
      };
      window.showOpenFilePicker(opts).then((handles) => props.getFilesFromEvent(handles)).then((files) => {
        setFiles(files, null);
        setState("isFileDialogActive", false);
      }).catch((e) => {
        if (isAbort(e)) {
          props.onFileDialogCancel?.();
          setState("isFileDialogActive", false);
        } else if (isSecurityError(e)) {
          fsAccessApiWorks = false;
          const input2 = inputRef();
          if (input2) {
            input2.value = null;
            input2.click();
          } else {
            onError(new Error("Cannot open the file picker because the https://developer.mozilla.org/en-US/docs/Web/API/File_System_Access_API is not supported and no <input> was provided."));
          }
        } else {
          onError(e);
        }
      });
      return;
    }
    const input = inputRef();
    if (input) {
      setState("isFileDialogActive", true);
      props.onFileDialogOpen?.();
      input.value = null;
      input.click();
    }
  };
  const onKeydown = (event) => {
    const root = rootRef();
    if (!root || !root.isEqualNode(event.target)) {
      return;
    }
    if (event.key === " " || event.key === "Enter" || event.keyCode === 32 || event.keyCode === 13) {
      event.preventDefault();
      openFileDialog();
    }
  };
  const onFocus = () => setState("isFocused", true);
  const onBlur = () => setState("isFocused", false);
  const onClick = () => {
    if (props.noClick) {
      return;
    }
    if (isIeOrEdge()) {
      setTimeout(openFileDialog, 0);
    } else {
      openFileDialog();
    }
  };
  const composeHandler = (fn) => {
    return props.disabled ? noop : fn;
  };
  const composeKeyboardHandler = (fn) => {
    return props.noKeyboard ? noop : composeHandler(fn);
  };
  const composeDragHandler = (fn) => {
    return props.noDrag ? noop : composeHandler(fn);
  };
  const getRootProps = (_overrides = {}) => {
    const [overrides, rest] = solidJs.splitProps(solidJs.mergeProps({
      refKey: "ref"
    }, _overrides), ["onKeyDown", "onFocus", "onBlur", "onClick", "onDragEnter", "onDragOver", "onDragLeave", "onDrop", "role", "refKey"]);
    return {
      onKeyDown: composeKeyboardHandler(composeEventHandlers(overrides.onKeyDown, onKeydown)),
      onFocus: composeKeyboardHandler(composeEventHandlers(overrides.onFocus, onFocus)),
      onBlur: composeKeyboardHandler(composeEventHandlers(overrides.onBlur, onBlur)),
      onClick: composeHandler(composeEventHandlers(overrides.onClick, onClick)),
      onDragEnter: composeDragHandler(composeEventHandlers(overrides.onDragEnter, onDragEnter)),
      onDragOver: composeDragHandler(composeEventHandlers(overrides.onDragOver, onDragOver)),
      onDragLeave: composeDragHandler(composeEventHandlers(overrides.onDragLeave, onDragLeave)),
      onDrop: composeDragHandler(composeEventHandlers(overrides.onDrop, onDrop)),
      role: typeof overrides.role === "string" && overrides.role ? overrides.role : "presentation",
      [overrides.refKey]: setRootRef,
      ...!props.disabled && !props.noKeyboard ? {
        tabIndex: 0
      } : {},
      ...rest
    };
  };
  const onInputElementClick = (event) => {
    event.stopPropagation();
  };
  const getInputProps = (_overrides = {}) => {
    const [overrides, rest] = solidJs.splitProps(solidJs.mergeProps({
      refKey: "ref"
    }, _overrides), ["onChange", "onClick", "refKey"]);
    return {
      accept: acceptAttr(),
      multiple: props.multiple,
      type: "file",
      style: {
        display: "none"
      },
      onChange: composeHandler(composeEventHandlers(overrides.onChange, onDrop)),
      onClick: composeHandler(composeEventHandlers(overrides.onClick, onInputElementClick)),
      tabIndex: -1,
      [overrides.refKey]: setInputRef,
      ...rest
    };
  };
  return solidJs.mergeProps(state, {
    get isFocused() {
      return state.isFocused && !props.disabled;
    },
    getInputProps,
    getRootProps,
    rootRef: setRootRef,
    inputRef: setInputRef,
    open: composeHandler(openFileDialog)
  });
};
var getInvalidTypeRejectionErr = (accept) => {
  accept = Array.isArray(accept) && accept.length === 1 ? accept[0] : accept;
  const messageSuffix = Array.isArray(accept) ? `one of ${accept.join(", ")}` : accept;
  return {
    code: "file-invalid-type",
    message: `File type must be ${messageSuffix}`
  };
};
var getTooLargeRejectionErr = (maxSize) => {
  return {
    code: "file-too-large",
    message: `File is larger than ${maxSize} ${maxSize === 1 ? "byte" : "bytes"}`
  };
};
var getTooSmallRejectionErr = (minSize) => {
  return {
    code: "file-too-small",
    message: `File is smaller than ${minSize} ${minSize === 1 ? "byte" : "bytes"}`
  };
};
var getTooManyFilesRejectionErr = () => {
  return {
    code: "too-many-files",
    message: "Too many files"
  };
};
function fileAccepted(file, accept) {
  const acceptArray = getRawAcceptArray(accept);
  const isAcceptable = file.type === "application/x-moz-file" || accepts__default.default(file, acceptArray.length ? acceptArray : "");
  if (isAcceptable)
    return [true, null];
  return [false, getInvalidTypeRejectionErr(accept)];
}
function fileMatchSize(file, minSize, maxSize) {
  if (isDefined(file.size)) {
    if (isDefined(minSize) && isDefined(maxSize)) {
      if (file.size > maxSize)
        return [false, getTooLargeRejectionErr(maxSize)];
      if (file.size < minSize)
        return [false, getTooSmallRejectionErr(minSize)];
    } else if (isDefined(minSize) && file.size < minSize)
      return [false, getTooSmallRejectionErr(minSize)];
    else if (isDefined(maxSize) && file.size > maxSize)
      return [false, getTooLargeRejectionErr(maxSize)];
  }
  return [true, null];
}
function isDefined(value) {
  return value !== void 0 && value !== null;
}
function allFilesAccepted({
  files,
  accept,
  minSize,
  maxSize,
  multiple,
  maxFiles,
  validator
}) {
  if (!multiple && files.length > 1 || multiple && maxFiles >= 1 && files.length > maxFiles) {
    return false;
  }
  return files.every((file) => {
    const [accepted] = fileAccepted(file, accept);
    const [sizeMatch] = fileMatchSize(file, minSize, maxSize);
    const customErrors = validator ? validator(file) : null;
    return accepted && sizeMatch && !customErrors;
  });
}
function isPropagationStopped(event) {
  if (typeof event.cancelBubble !== "undefined") {
    return event.cancelBubble;
  }
  return false;
}
function isEvtWithFiles(event) {
  if (!("dataTransfer" in event) || !event.dataTransfer) {
    return !!event.target && "files" in event.target && !!event.target.files;
  }
  return Array.prototype.some.call(event.dataTransfer.types, (type) => type === "Files" || type === "application/x-moz-file");
}
function onDocumentDragOver(event) {
  event.preventDefault();
}
function isIe(userAgent) {
  return userAgent.indexOf("MSIE") !== -1 || userAgent.indexOf("Trident/") !== -1;
}
function isEdge(userAgent) {
  return userAgent.indexOf("Edge/") !== -1;
}
function isIeOrEdge(userAgent = window.navigator.userAgent) {
  return isIe(userAgent) || isEdge(userAgent);
}
function composeEventHandlers(...fns) {
  return (event) => {
    fns.some((fn) => {
      if (!isPropagationStopped(event) && fn) {
        fn(event);
      }
      return isPropagationStopped(event);
    });
  };
}
function canUseFileSystemAccessAPI() {
  return "showOpenFilePicker" in window;
}
function pickerOptionsFromAccept(accept) {
  if (isDefined(accept)) {
    const acceptForPicker = {};
    Object.entries(accept).forEach(([mimeType, ext]) => {
      if (!isMIMEType(mimeType)) {
        if (solidJs.DEV) {
          console.warn(`Skipped "${mimeType}" because it is not a valid MIME type. Check https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types for a list of valid MIME types.`);
        }
        return;
      }
      if (!Array.isArray(ext) || !ext.every(isExt)) {
        if (solidJs.DEV) {
          console.warn(`Skipped "${mimeType}" because an invalid file extension was provided.`);
        }
        return;
      }
      acceptForPicker[mimeType] = ext;
    });
    return [{
      // description is required due to https://crbug.com/1264708
      description: "Files",
      accept: acceptForPicker
    }];
  }
  return accept;
}
var getRawAcceptArray = (accept) => {
  let array;
  if (Array.isArray(accept)) {
    array = accept;
  } else if (typeof accept === "string") {
    array = accept.split(",");
  } else {
    array = Object.entries(accept).flat(Infinity);
  }
  return array.filter(Boolean);
};
function acceptPropAsAcceptAttr(accept) {
  if (isDefined(accept)) {
    return getRawAcceptArray(accept).filter((v) => isMIMEType(v) || isExt(v)).join(",");
  }
  return void 0;
}
function isAbort(v) {
  return v instanceof DOMException && (v.name === "AbortError" || v.code === v.ABORT_ERR);
}
function isSecurityError(v) {
  return v instanceof DOMException && (v.name === "SecurityError" || v.code === v.SECURITY_ERR);
}
function isMIMEType(v) {
  return v === "audio/*" || v === "video/*" || v === "image/*" || v === "text/*" || /\w+\/[-+.\w]+/g.test(v);
}
function isExt(v) {
  return /^.*\.[\w]+$/.test(v);
}