devextreme/esm/__internal/file_management/provider_base.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/__internal/file_management/provider_base.js)
 * Version: 25.2.3
 * Build date: Fri Dec 12 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
import {
    ensureDefined
} from "../../core/utils/common";
import {
    compileGetter
} from "../../core/utils/data";
import dateSerialization from "../../core/utils/date_serialization";
import {
    Deferred,
    fromPromise
} from "../../core/utils/deferred";
import {
    each
} from "../../core/utils/iterator";
import {
    isPromise
} from "../../core/utils/type";
import FileSystemItem from "../file_management/file_system_item";
const DEFAULT_FILE_UPLOAD_CHUNK_SIZE = 2e5;
class FileSystemProviderBase {
    constructor(options) {
        options = ensureDefined(options, {});
        this._keyGetter = compileGetter(this._getKeyExpr(options));
        this._nameGetter = compileGetter(this._getNameExpr(options));
        this._isDirGetter = compileGetter(this._getIsDirExpr(options));
        this._sizeGetter = compileGetter(this._getSizeExpr(options));
        this._dateModifiedGetter = compileGetter(this._getDateModifiedExpr(options));
        this._thumbnailGetter = compileGetter(this._getThumbnailExpr(options))
    }
    getItems(parentDirectory) {
        const deferred = new Deferred;
        deferred.resolve([]);
        return deferred.promise()
    }
    abortFileUpload(fileData, chunksInfo, destinationDirectory) {}
    getItemsContent(items) {}
    getFileUploadChunkSize() {
        return 2e5
    }
    _convertDataObjectsToFileItems(entries, pathInfo) {
        const result = [];
        each(entries, ((_, entry) => {
            const fileItem = this._createFileItem(entry, pathInfo);
            result.push(fileItem)
        }));
        return result
    }
    _createFileItem(dataObj, pathInfo) {
        var _this$_keyGetter, _this$_nameGetter, _this$_isDirGetter, _this$_sizeGetter, _this$_dateModifiedGe, _this$_thumbnailGette;
        const key = null === (_this$_keyGetter = this._keyGetter) || void 0 === _this$_keyGetter ? void 0 : _this$_keyGetter.call(this, dataObj);
        const fileItem = new FileSystemItem(pathInfo, null === (_this$_nameGetter = this._nameGetter) || void 0 === _this$_nameGetter ? void 0 : _this$_nameGetter.call(this, dataObj), !!(null !== (_this$_isDirGetter = this._isDirGetter) && void 0 !== _this$_isDirGetter && _this$_isDirGetter.call(this, dataObj)), key);
        fileItem.size = null === (_this$_sizeGetter = this._sizeGetter) || void 0 === _this$_sizeGetter ? void 0 : _this$_sizeGetter.call(this, dataObj);
        if (void 0 === fileItem.size) {
            fileItem.size = 0
        }
        fileItem.dateModified = dateSerialization.deserializeDate(null === (_this$_dateModifiedGe = this._dateModifiedGetter) || void 0 === _this$_dateModifiedGe ? void 0 : _this$_dateModifiedGe.call(this, dataObj));
        if (void 0 === fileItem.dateModified) {
            fileItem.dateModified = new Date
        }
        if (fileItem.isDirectory) {
            fileItem.hasSubDirectories = this._hasSubDirs(dataObj)
        }
        if (!key) {
            fileItem.key = fileItem.relativeName
        }
        fileItem.thumbnail = (null === (_this$_thumbnailGette = this._thumbnailGetter) || void 0 === _this$_thumbnailGette ? void 0 : _this$_thumbnailGette.call(this, dataObj)) || "";
        fileItem.dataItem = dataObj;
        return fileItem
    }
    _hasSubDirs(dataObj) {
        return true
    }
    _getKeyExpr(options) {
        return options.keyExpr ?? this._defaultKeyExpr
    }
    _defaultKeyExpr(fileItem) {
        if (2 === arguments.length) {
            fileItem.__KEY__ = arguments[1];
            return
        }
        return Object.prototype.hasOwnProperty.call(fileItem, "__KEY__") ? fileItem.__KEY__ : null
    }
    _getNameExpr(options) {
        return options.nameExpr ?? "name"
    }
    _getIsDirExpr(options) {
        return options.isDirectoryExpr ?? "isDirectory"
    }
    _getSizeExpr(options) {
        return options.sizeExpr ?? "size"
    }
    _getDateModifiedExpr(options) {
        return options.dateModifiedExpr ?? "dateModified"
    }
    _getThumbnailExpr(options) {
        return options.thumbnailExpr ?? "thumbnail"
    }
    _executeActionAsDeferred(action, keepResult) {
        const deferred = new Deferred;
        try {
            const result = action();
            if (isPromise(result)) {
                fromPromise(result).done((userResult => deferred.resolve(keepResult ? userResult : void 0))).fail((error => deferred.reject(error)))
            } else {
                deferred.resolve(keepResult ? result : void 0)
            }
        } catch (error) {
            return deferred.reject(error)
        }
        return deferred.promise()
    }
}
export default FileSystemProviderBase;