ngx-dropzone-next/fesm2022/ngx-dropzone-next-on-drop-DVJ8FboQ.mjs.map

A highly configurable dropzone component for Angular.

{"version":3,"file":"ngx-dropzone-next-on-drop-DVJ8FboQ.mjs","sources":["../../../projects/ngx-dropzone/src/lib/ngx-dropzone/on-drop.ts"],"sourcesContent":["import type { NgxDropzoneComponent } from './ngx-dropzone.component';\n\nexport async function onDrop(\n  ctx: NgxDropzoneComponent,\n  { dataTransfer }: DragEvent\n) {\n  if (!dataTransfer) {\n    if (typeof ngDevMode !== 'undefined' && ngDevMode) {\n      throw new Error('dataTransfer is not defined on the event object.');\n    }\n\n    return;\n  }\n\n  // if processDirectoryDrop is not enabled or webkitGetAsEntry is not supported we handle the drop as usual\n  if (\n    !ctx.processDirectoryDrop() ||\n    !DataTransferItem.prototype.webkitGetAsEntry\n  ) {\n    await handleFileDrop(ctx, dataTransfer.files);\n    // if processDirectoryDrop is enabled and webkitGetAsEntry is supported we can extract files from a dropped directory\n  } else if (dataTransfer.items.length > 0) {\n    const droppedItems: DataTransferItemList = dataTransfer!.items;\n\n    const droppedFiles: File[] = [];\n    const droppedDirectories: FileSystemEntry[] = [];\n\n    // seperate dropped files from dropped directories for easier handling\n    for (let index = 0; index < droppedItems.length; index++) {\n      const entry = droppedItems[index].webkitGetAsEntry();\n\n      if (!entry) {\n        continue;\n      }\n\n      if (entry.isFile) {\n        droppedFiles.push(dataTransfer.files[index]);\n      } else if (entry.isDirectory) {\n        droppedDirectories.push(entry);\n      }\n    }\n\n    // create a DataTransfer\n    const droppedFilesList = new DataTransfer();\n    droppedFiles.forEach((droppedFile) => {\n      droppedFilesList.items.add(droppedFile);\n    });\n\n    // if no directory is dropped we are done and can call handleFileDrop\n    if (!droppedDirectories.length && droppedFilesList.items.length) {\n      handleFileDrop(ctx, droppedFilesList.files);\n    }\n\n    // if directories are dropped we extract the files from these directories one-by-one and add it to droppedFilesList\n    if (droppedDirectories.length) {\n      const extractFilesFromDirectoryCalls: Promise<File[]>[] = [];\n\n      for (const droppedDirectory of droppedDirectories) {\n        extractFilesFromDirectoryCalls.push(\n          extractFilesFromDirectory(droppedDirectory)\n        );\n      }\n\n      // wait for all directories to be proccessed to add the extracted files afterwards\n      await Promise.all(extractFilesFromDirectoryCalls).then(\n        (allExtractedFiles: File[][]) => {\n          allExtractedFiles\n            .reduce((a, b) => [...a, ...b])\n            .forEach((extractedFile: File) => {\n              droppedFilesList.items.add(extractedFile);\n            });\n        }\n      );\n\n      await handleFileDrop(ctx, droppedFilesList.files);\n    }\n  }\n}\n\nasync function getFileFromFileEntry(entry: FileSystemEntry) {\n  try {\n    const fileSystemFileEntry = <FileSystemFileEntry>entry;\n\n    return await new Promise<File>((resolve, reject) =>\n      fileSystemFileEntry.file(resolve, reject)\n    );\n  } catch (error) {\n    if (typeof ngDevMode !== 'undefined' && ngDevMode) {\n      console.log('Error converting a fileEntry to a File: ', error);\n    }\n    return null;\n  }\n}\n\nfunction extractFilesFromDirectory(directory: FileSystemEntry) {\n  return new Promise<File[]>((resolve) => {\n    const files: File[] = [];\n\n    const reader = (directory as FileSystemDirectoryEntry).createReader();\n\n    // we need this to be a recursion because of this issue: https://bugs.chromium.org/p/chromium/issues/detail?id=514087\n    const readEntries = () => {\n      reader.readEntries(async (entries: FileSystemEntry[]) => {\n        if (entries.length > 0) {\n          for (const entry of entries.filter(({ isFile }) => isFile)) {\n            const file = await getFileFromFileEntry(entry);\n            file && files.push(file);\n          }\n\n          readEntries();\n        } else {\n          resolve(files);\n        }\n      });\n    };\n\n    readEntries();\n  });\n}\n\nexport async function handleFileDrop(\n  ctx: NgxDropzoneComponent,\n  files: FileList\n) {\n  const { NgxDropzoneService } = await import('./ngx-dropzone.service');\n\n  const service = ctx.injector.get(NgxDropzoneService);\n\n  const result = service.parseFileList(\n    files,\n    ctx.accept(),\n    ctx.maxFileSize(),\n    ctx.multiple()\n  );\n\n  ctx.change.emit({\n    addedFiles: result.addedFiles,\n    rejectedFiles: result.rejectedFiles,\n    source: ctx,\n  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