Java 类com.intellij.util.download.DownloadableFileService 实例源码

private void downloadJar(String jarUrl, String jarName) {
  final Project project = myModule.getProject();
  final String dirPath = PropertiesComponent.getInstance(project).getValue("findjar.last.used.dir");
  VirtualFile toSelect = dirPath == null ? null : LocalFileSystem.getInstance().findFileByIoFile(new File(dirPath));
  final VirtualFile file = FileChooser.chooseFile(FileChooserDescriptorFactory.createSingleFolderDescriptor(), project, toSelect);
  if (file != null) {
    PropertiesComponent.getInstance(project).setValue("findjar.last.used.dir", file.getPath());
    final DownloadableFileService downloader = DownloadableFileService.getInstance();
    final DownloadableFileDescription description = downloader.createFileDescription(jarUrl, jarName);
    final List<VirtualFile> jars =
      downloader.createDownloader(Arrays.asList(description), jarName)
                .downloadFilesWithProgress(file.getPath(), project, myEditorComponent);
    if (jars != null && jars.size() == 1) {
      AccessToken token = WriteAction.start();
      try {
        OrderEntryFix.addJarToRoots(jars.get(0).getPresentableUrl(), myModule, myRef);
      }
      finally {
        token.finish();
      }
    }
  }
}

/**
 * Download files from the specified URLs.
 *
 * @param urls The URLs of the files.
 * @param targetPath The path to download the file to.
 * @return The downloaded files.
 */
private Collection<VirtualFile> downloadFiles(final Collection<String> urls, final String targetPath) {

    final DownloadableFileService fileService = DownloadableFileService.getInstance();

    final List<DownloadableFileDescription> fileDescriptions
            = ContainerUtil.map(urls, (u) -> toFileDescription(fileService, u));

    @Nullable final List<VirtualFile> files = fileService
            .createDownloader(fileDescriptions, "")
            .downloadFilesWithProgress(targetPath, null, null);
    if (files == null || files.size() != fileDescriptions.size()) {
        throw LoggerUtils2.exception(this.logger, RuntimeException.class, "Not all files were downloaded!");
    }
    return files;
}

private void downloadJar(String jarUrl, String jarName) {
  final Project project = myModule.getProject();
  final String dirPath = PropertiesComponent.getInstance(project).getValue("findjar.last.used.dir");
  VirtualFile toSelect = dirPath == null ? null : LocalFileSystem.getInstance().findFileByIoFile(new File(dirPath));
  final VirtualFile file = FileChooser.chooseFile(FileChooserDescriptorFactory.createSingleFolderDescriptor(), project, toSelect);
  if (file != null) {
    PropertiesComponent.getInstance(project).setValue("findjar.last.used.dir", file.getPath());
    final DownloadableFileService downloader = DownloadableFileService.getInstance();
    final DownloadableFileDescription description = downloader.createFileDescription(jarUrl, jarName);
    final VirtualFile[] jars = downloader.createDownloader(Arrays.asList(description), project, myEditorComponent, jarName)
      .toDirectory(file.getPath()).download();
    if (jars != null && jars.length == 1) {
      AccessToken token = WriteAction.start();
      try {
        OrderEntryFix.addJarToRoots(jars[0].getPresentableUrl(), myModule, myRef);
      }
      finally {
        token.finish();
      }
    }
  }
}

/**
 * Gets the file description of the specified URL.
 *
 * @param fileService The file service.
 * @param url The URL.
 * @return The file description.
 */
private DownloadableFileDescription toFileDescription(final DownloadableFileService fileService, final String url) {
    final String filename = FilenameUtils.getName(url);
    return fileService.createFileDescription(url, filename);
}