devextreme/cjs/file_management/object_provider.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (cjs/file_management/object_provider.js)
 * Version: 24.2.6
 * Build date: Mon Mar 17 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
"use strict";
exports.default = void 0;
var _common = require("../core/utils/common");
var _data = require("../core/utils/data");
var _common2 = require("../common");
var _type = require("../core/utils/type");
var _errors = require("../common/data/errors");
var _deferred = require("../core/utils/deferred");
var _window = require("../core/utils/window");
var _file_saver = require("../exporter/file_saver");
var _ui = _interopRequireDefault(require("../ui/widget/ui.errors"));
var _jszip = _interopRequireDefault(require("jszip"));
var _provider_base = _interopRequireDefault(require("./provider_base"));
var _error = _interopRequireDefault(require("./error"));
var _error_codes = _interopRequireDefault(require("./error_codes"));
var _utils = require("./utils");

function _interopRequireDefault(e) {
    return e && e.__esModule ? e : {
        default: e
    }
}
const window = (0, _window.getWindow)();
class ObjectFileSystemProvider extends _provider_base.default {
    constructor(options) {
        options = (0, _common.ensureDefined)(options, {});
        super(options);
        const initialArray = options.data;
        if (initialArray && !Array.isArray(initialArray)) {
            throw _errors.errors.Error("E4006")
        }
        const itemsExpr = options.itemsExpr || "items";
        this._subFileItemsGetter = (0, _data.compileGetter)(itemsExpr);
        this._subFileItemsSetter = this._getSetter(itemsExpr);
        const contentExpr = options.contentExpr || "content";
        this._contentGetter = (0, _data.compileGetter)(contentExpr);
        this._contentSetter = this._getSetter(contentExpr);
        const nameExpr = this._getNameExpr(options);
        this._nameSetter = this._getSetter(nameExpr);
        const isDirExpr = this._getIsDirExpr(options);
        this._getIsDirSetter = this._getSetter(isDirExpr);
        const keyExpr = this._getKeyExpr(options);
        this._keySetter = this._getSetter(keyExpr);
        const sizeExpr = this._getSizeExpr(options);
        this._sizeSetter = this._getSetter(sizeExpr);
        const dateModifiedExpr = this._getDateModifiedExpr(options);
        this._dateModifiedSetter = this._getSetter(dateModifiedExpr);
        this._data = initialArray || []
    }
    getItems(parentDir) {
        return this._executeActionAsDeferred((() => this._getItems(parentDir)), true)
    }
    renameItem(item, name) {
        return this._executeActionAsDeferred((() => this._renameItemCore(item, name)))
    }
    _renameItemCore(item, name) {
        if (!item) {
            return
        }
        const dataItem = this._findDataObject(item);
        this._nameSetter(dataItem, name);
        item.name = name;
        item.key = this._ensureDataObjectKey(dataItem)
    }
    createDirectory(parentDir, name) {
        return this._executeActionAsDeferred((() => {
            this._validateDirectoryExists(parentDir);
            this._createDataObject(parentDir, name, true)
        }))
    }
    deleteItems(items) {
        return items.map((item => this._executeActionAsDeferred((() => this._deleteItem(item)))))
    }
    moveItems(items, destinationDir) {
        const destinationDataItem = this._findDataObject(destinationDir);
        const array = this._getDirectoryDataItems(destinationDataItem);
        const deferreds = items.map((item => this._executeActionAsDeferred((() => {
            this._checkAbilityToMoveOrCopyItem(item, destinationDir);
            const dataItem = this._findDataObject(item);
            this._deleteItem(item);
            array.push(dataItem)
        }))));
        return deferreds
    }
    copyItems(items, destinationDir) {
        const destinationDataItem = this._findDataObject(destinationDir);
        const array = this._getDirectoryDataItems(destinationDataItem);
        const deferreds = items.map((item => this._executeActionAsDeferred((() => {
            this._checkAbilityToMoveOrCopyItem(item, destinationDir);
            const dataItem = this._findDataObject(item);
            const copiedItem = this._createCopy(dataItem);
            array.push(copiedItem)
        }))));
        return deferreds
    }
    uploadFileChunk(fileData, chunksInfo, destinationDirectory) {
        if (chunksInfo.chunkIndex > 0) {
            return chunksInfo.customData.deferred
        }
        this._validateDirectoryExists(destinationDirectory);
        const deferred = chunksInfo.customData.deferred = new _deferred.Deferred;
        const reader = this._createFileReader();
        reader.readAsDataURL(fileData);
        reader.onload = () => {
            const content = reader.result.split(",")[1];
            const dataObj = this._createDataObject(destinationDirectory, fileData.name, false);
            this._sizeSetter(dataObj, fileData.size);
            this._dateModifiedSetter(dataObj, fileData.lastModifiedDate);
            this._contentSetter(dataObj, content);
            deferred.resolve()
        };
        reader.onerror = error => deferred.reject(error);
        return deferred
    }
    downloadItems(items) {
        if (1 === items.length) {
            this._downloadSingleFile(items[0])
        } else {
            this._downloadMultipleFiles(items)
        }
    }
    _downloadSingleFile(file) {
        const content = this._getFileContent(file);
        const byteString = window.atob(content);
        const arrayBuffer = new ArrayBuffer(byteString.length);
        const array = new Uint8Array(arrayBuffer);
        for (let i = 0; i < byteString.length; i++) {
            array[i] = byteString.charCodeAt(i)
        }
        const blob = new window.Blob([arrayBuffer], {
            type: "application/octet-stream"
        });
        _file_saver.fileSaver.saveAs(file.name, null, blob)
    }
    _downloadMultipleFiles(files) {
        const jsZip = getJSZip();
        const zip = new jsZip;
        files.forEach((file => zip.file(file.name, this._getFileContent(file), {
            base64: true
        })));
        const options = {
            type: "blob",
            compression: "DEFLATE",
            mimeType: "application/zip"
        };
        const deferred = new _deferred.Deferred;
        if (zip.generateAsync) {
            zip.generateAsync(options).then(deferred.resolve)
        } else {
            deferred.resolve(zip.generate(options))
        }
        deferred.done((blob => _file_saver.fileSaver.saveAs("files.zip", null, blob)))
    }
    _getFileContent(file) {
        const dataItem = this._findDataObject(file);
        return this._contentGetter(dataItem) || ""
    }
    _validateDirectoryExists(directoryInfo) {
        if (!this._isFileItemExists(directoryInfo) || this._isDirGetter(directoryInfo.fileItem)) {
            throw new _error.default(_error_codes.default.DirectoryNotFound, directoryInfo)
        }
    }
    _checkAbilityToMoveOrCopyItem(item, destinationDir) {
        const dataItem = this._findDataObject(item);
        const itemKey = this._getKeyFromDataObject(dataItem, item.parentPath);
        const pathInfo = destinationDir.getFullPathInfo();
        let currentPath = "";
        pathInfo.forEach((info => {
            currentPath = (0, _utils.pathCombine)(currentPath, info.name);
            const pathKey = this._getDataObjectKey(info.key, currentPath);
            if (pathKey === itemKey) {
                throw new _error.default(_error_codes.default.Other, item)
            }
        }))
    }
    _createDataObject(parentDir, name, isDirectory) {
        const dataObj = {};
        this._nameSetter(dataObj, name);
        this._getIsDirSetter(dataObj, isDirectory);
        this._keySetter(dataObj, String(new _common2.Guid));
        const parentDataItem = this._findDataObject(parentDir);
        const array = this._getDirectoryDataItems(parentDataItem);
        array.push(dataObj);
        return dataObj
    }
    _createCopy(dataObj) {
        const copyObj = {};
        this._nameSetter(copyObj, this._nameGetter(dataObj));
        this._getIsDirSetter(copyObj, this._isDirGetter(dataObj));
        const items = this._subFileItemsGetter(dataObj);
        if (Array.isArray(items)) {
            const itemsCopy = [];
            items.forEach((childItem => {
                const childCopy = this._createCopy(childItem);
                itemsCopy.push(childCopy)
            }));
            this._subFileItemsSetter(copyObj, itemsCopy)
        }
        return copyObj
    }
    _deleteItem(fileItem) {
        const dataItem = this._findDataObject(fileItem);
        const parentDirDataObj = this._findFileItemObj(fileItem.pathInfo);
        const array = this._getDirectoryDataItems(parentDirDataObj);
        const index = array.indexOf(dataItem);
        array.splice(index, 1)
    }
    _getDirectoryDataItems(directoryDataObj) {
        if (!directoryDataObj) {
            return this._data
        }
        let dataItems = this._subFileItemsGetter(directoryDataObj);
        if (!Array.isArray(dataItems)) {
            dataItems = [];
            this._subFileItemsSetter(directoryDataObj, dataItems)
        }
        return dataItems
    }
    _getItems(parentDir) {
        this._validateDirectoryExists(parentDir);
        const pathInfo = parentDir.getFullPathInfo();
        const parentDirKey = pathInfo && pathInfo.length > 0 ? pathInfo[pathInfo.length - 1].key : null;
        let dirFileObjects = this._data;
        if (parentDirKey) {
            const directoryEntry = this._findFileItemObj(pathInfo);
            dirFileObjects = directoryEntry && this._subFileItemsGetter(directoryEntry) || []
        }
        this._ensureKeysForDuplicateNameItems(dirFileObjects);
        return this._convertDataObjectsToFileItems(dirFileObjects, pathInfo)
    }
    _ensureKeysForDuplicateNameItems(dataObjects) {
        const names = {};
        dataObjects.forEach((obj => {
            const name = this._nameGetter(obj);
            if (names[name]) {
                this._ensureDataObjectKey(obj)
            } else {
                names[name] = true
            }
        }))
    }
    _findDataObject(item) {
        if (item.isRoot()) {
            return null
        }
        const result = this._findFileItemObj(item.getFullPathInfo());
        if (!result) {
            const errorCode = item.isDirectory ? _error_codes.default.DirectoryNotFound : _error_codes.default.FileNotFound;
            throw new _error.default(errorCode, item)
        }
        return result
    }
    _findFileItemObj(pathInfo) {
        if (!Array.isArray(pathInfo)) {
            pathInfo = []
        }
        let currentPath = "";
        let fileItemObj = null;
        let fileItemObjects = this._data;
        for (let i = 0; i < pathInfo.length && (0 === i || fileItemObj); i++) {
            fileItemObj = fileItemObjects.find((item => {
                const hasCorrectFileItemType = this._isDirGetter(item) || i === pathInfo.length - 1;
                return this._getKeyFromDataObject(item, currentPath) === pathInfo[i].key && this._nameGetter(item) === pathInfo[i].name && hasCorrectFileItemType
            }));
            if (fileItemObj) {
                currentPath = (0, _utils.pathCombine)(currentPath, this._nameGetter(fileItemObj));
                fileItemObjects = this._subFileItemsGetter(fileItemObj)
            }
        }
        return fileItemObj
    }
    _getKeyFromDataObject(dataObj, defaultKeyPrefix) {
        const key = this._keyGetter(dataObj);
        const relativeName = (0, _utils.pathCombine)(defaultKeyPrefix, this._nameGetter(dataObj));
        return this._getDataObjectKey(key, relativeName)
    }
    _getDataObjectKey(key, relativeName) {
        return key ? key : relativeName
    }
    _ensureDataObjectKey(dataObj) {
        let key = this._keyGetter(dataObj);
        if (!key) {
            key = String(new _common2.Guid);
            this._keySetter(dataObj, key)
        }
        return key
    }
    _hasSubDirs(dataObj) {
        const subItems = (0, _common.ensureDefined)(this._subFileItemsGetter(dataObj), []);
        if (!Array.isArray(subItems)) {
            return true
        }
        for (let i = 0; i < subItems.length; i++) {
            if (true === this._isDirGetter(subItems[i])) {
                return true
            }
        }
        return false
    }
    _getSetter(expr) {
        return (0, _type.isFunction)(expr) ? expr : (0, _data.compileSetter)(expr)
    }
    _isFileItemExists(fileItem) {
        return fileItem.isDirectory && fileItem.isRoot() || !!this._findFileItemObj(fileItem.getFullPathInfo())
    }
    _createFileReader() {
        return new window.FileReader
    }
}

function getJSZip() {
    if (!_jszip.default) {
        throw _ui.default.Error("E1041", "JSZip")
    }
    return _jszip.default
}
var _default = exports.default = ObjectFileSystemProvider;
module.exports = exports.default;
module.exports.default = exports.default;