private IReadOnlyCollection <FlowComponent> getUploadComponents(
int fileCollectionId, IReadOnlyCollection <BlobFile> files, DisplaySetup displaySetup, string postBackIdBase,
Action <RsFile, Validator> uploadValidationMethod, NewFileNotificationMethod fileCreatedOrReplacedNotifier)
{
RsFile file = null;
var dm = PostBack.CreateFull(
id: PostBack.GetCompositeId(postBackIdBase, "add"),
firstModificationMethod: () => {
if (file == null)
{
return;
}
var existingFile = files.SingleOrDefault(i => i.FileName == file.FileName);
int newFileId;
if (existingFile != null)
{
BlobStorageStatics.SystemProvider.UpdateFile(
existingFile.FileId,
file.FileName,
file.Contents,
BlobStorageStatics.GetContentTypeForPostedFile(file));
newFileId = existingFile.FileId;
}
else
{
newFileId = BlobStorageStatics.SystemProvider.InsertFile(
fileCollectionId,
file.FileName,
file.Contents,
BlobStorageStatics.GetContentTypeForPostedFile(file));
}
fileCreatedOrReplacedNotifier?.Invoke(newFileId);
EwfPage.AddStatusMessage(StatusMessageType.Info, "File uploaded successfully.");
});
return(FormState.ExecuteWithDataModificationsAndDefaultAction(
dm.ToCollection(),
() => new StackList(
new FileUpload(
validationMethod: (postBackValue, validator) => {
file = postBackValue;
uploadValidationMethod?.Invoke(postBackValue, validator);
}).ToFormItem()
.ToListItem()
.Append(new EwfButton(new StandardButtonStyle("Upload new file")).ToCollection().ToComponentListItem())).ToFormItem(
setup: new FormItemSetup(displaySetup: displaySetup),
label: "Select and upload a new file:".ToComponents())
.ToComponentCollection()));
}
// NOTE: Use this from blob file manager, etc.
/// <summary>
/// Returns a link to download a file with the given file collection ID.
/// If no file is associated with the given file collection ID, returns a literal control with textIfNoFile text.
/// The file name is used as the label unless labelOverride is specified.
/// SystemBlobFileManagementProvider must be implemented.
/// </summary>
public static IReadOnlyCollection <PhrasingComponent> GetFileButton(int fileCollectionId, string labelOverride = null, string textIfNoFile = "")
{
var file = BlobStorageStatics.GetFirstFileFromCollection(fileCollectionId);
if (file == null)
{
return(textIfNoFile.ToComponents());
}
return(new EwfButton(
new StandardButtonStyle(labelOverride ?? file.FileName, buttonSize: ButtonSize.ShrinkWrap),
behavior: new PostBackBehavior(
postBack: PostBack.CreateFull(
id: PostBack.GetCompositeId("ewfFile", file.FileId.ToString()),
actionGetter: () => new PostBackAction(
new PageReloadBehavior(
secondaryResponse: new SecondaryResponse(
new BlobFileResponse(BlobStorageStatics.GetFirstFileFromCollection(fileCollectionId).FileId, () => true),
false)))))).ToCollection());
}
/// <summary>
/// If file is null, this will be a no-op.
/// Pass null for acceptableFileExtensions if there is no restriction on file extension.
/// PerformAdditionalImageValidation cannot be null but may be an empty delegate.
/// </summary>
/// <param name="validator"></param>
/// <param name="file"></param>
/// <param name="acceptableFileExtensions">Prevents the user from uploading a file of a type other than those provided. File type constants found in
/// EnterpriseWebLibrary.FileExtensions. Do not use this to force the file to be a specific type of file, such as an image (which consists of several file
/// extensions). Instead, use mustBeRenderableImage.</param>
/// <param name="mustBeRenderableImage">Pass true to only accept images (of any renderable type - jpgs, pngs, but not nefs).</param>
public static void ValidateUploadedFile(Validator validator, RsFile file, string[] acceptableFileExtensions, bool mustBeRenderableImage)
{
if (file == null)
{
return;
}
// Perform generic file validation.
if (acceptableFileExtensions != null && !FileExtensions.MatchesAGivenExtension(file.FileName, acceptableFileExtensions))
{
validator.NoteErrorAndAddMessage(Translation.UnacceptableFileExtension + " " + acceptableFileExtensions.GetCommaDelimitedStringFromCollection());
// Don't bother trying to see if it's an image and parse the image. The file extension message be more detailed than the messages those errors produce.
return;
}
// Perform image-specific validation if necessary.
if (mustBeRenderableImage)
{
// Make sure it is an image according to its content type.
if (!ContentTypes.IsImageType(BlobStorageStatics.GetContentTypeForPostedFile(file)))
{
validator.NoteErrorAndAddMessage("Please upload a valid image file.");
}
else
{
// Make sure it is an image type that we understand. Also perform optional custom validation.
try {
using (var stream = new MemoryStream(file.Contents))
System.Drawing.Image.FromStream(stream);
}
catch (ArgumentException) {
// If we end up in this catch block, it means that System.Drawing.Image does not understand our image. Since we already know that our content type
// is image at this point, this usually means that the file is some sort of unsupported image format, like NEF.
validator.NoteErrorAndAddMessage("The uploaded image file is in an unsupported format.");
}
}
}
}
/// <summary>
/// Initializes the system. This includes loading application settings from the configuration file. The application name should be scoped within the system.
/// For non web applications, this method must be called directly from the main executable assembly and not from a supporting library.
///
/// To debug this method, create a folder called C:\AnyoneFullControl and give Everyone full control. A file will appear in that folder explaining how far
/// it got in init.
/// </summary>
/// <param name="globalInitializer">The system's global initializer. Do not pass null.</param>
/// <param name="appName"></param>
/// <param name="isClientSideApp"></param>
/// <param name="assemblyFolderPath">Pass a nonempty string to override the assembly folder path, which is used to locate the installation folder. Use with
/// caution.</param>
/// <param name="mainDataAccessStateGetter">A method that returns the current main data-access state whenever it is requested, including during this
/// InitStatics call. Do not allow multiple threads to use the same state at the same time. If you pass null, the data-access subsystem will not be
/// available in the application.</param>
/// <param name="useLongDatabaseTimeouts">Pass true if the application is a background process that can tolerate slow database access.</param>
public static void InitStatics(
SystemInitializer globalInitializer, string appName, bool isClientSideApp, string assemblyFolderPath = "",
Func <DataAccessState> mainDataAccessStateGetter = null, bool useLongDatabaseTimeouts = false)
{
var initializationLog = "Starting init";
try {
if (initialized)
{
throw new ApplicationException("This class can only be initialized once.");
}
if (globalInitializer == null)
{
throw new ApplicationException("The system must have a global initializer.");
}
// Initialize these before the exception handling block below because it's reasonable for the exception handling to depend on them.
ConfigurationStatics.Init(assemblyFolderPath, globalInitializer.GetType(), appName, isClientSideApp, ref initializationLog);
EmailStatics.Init();
TelemetryStatics.Init();
// Setting the initialized flag to true must be done before executing the secondary init block below so that exception handling works.
initialized = true;
initializationLog += Environment.NewLine + "Succeeded in primary init.";
}
catch (Exception e) {
initializationLog += Environment.NewLine + e;
EwlStatics.EmergencyLog("Initialization log", initializationLog);
throw;
}
try {
CultureInfo.DefaultThreadCurrentCulture = Cultures.EnglishUnitedStates;
var asposePdfLicensePath = EwlStatics.CombinePaths(ConfigurationStatics.InstallationConfiguration.AsposeLicenseFolderPath, "Aspose.PDF.lic");
if (File.Exists(asposePdfLicensePath))
{
new Aspose.Pdf.License().SetLicense(asposePdfLicensePath);
}
var asposeWordsLicensePath = EwlStatics.CombinePaths(ConfigurationStatics.InstallationConfiguration.AsposeLicenseFolderPath, "Aspose.Words.lic");
if (File.Exists(asposeWordsLicensePath))
{
new Aspose.Words.License().SetLicense(asposeWordsLicensePath);
}
AppMemoryCache.Init();
BlobStorageStatics.Init();
DataAccessStatics.Init();
DataAccessState.Init(mainDataAccessStateGetter, useLongDatabaseTimeouts);
EncryptionOps.Init();
HtmlBlockStatics.Init();
UserManagementStatics.Init();
GlobalInitializationOps.globalInitializer = globalInitializer;
globalInitializer.InitStatics();
}
catch (Exception e) {
secondaryInitFailed = true;
// Suppress all exceptions since they would prevent apps from knowing that primary initialization succeeded. EWF apps need to know this in order to
// automatically restart themselves. Other apps could find this knowledge useful as well.
try {
TelemetryStatics.ReportError("An exception occurred during application initialization:", e);
}
catch {}
}
}
public BlobFileManager(
int?fileCollectionId, bool requireUploadIfNoFile, Action <int> idSetter, out Action modificationMethod, BlobFileManagerSetup setup = null)
{
setup = setup ?? BlobFileManagerSetup.Create();
var file = fileCollectionId != null?BlobStorageStatics.GetFirstFileFromCollection(fileCollectionId.Value) : null;
var components = new List <FlowComponent>();
if (file != null)
{
var download = new EwfButton(
new StandardButtonStyle(Translation.DownloadExisting + " (" + file.FileName + ")", buttonSize: ButtonSize.ShrinkWrap),
behavior: new PostBackBehavior(
postBack: PostBack.CreateFull(
id: PostBack.GetCompositeId("ewfFile", file.FileId.ToString()),
actionGetter: () => {
// Refresh the file here in case a new one was uploaded on the same post-back.
return(new PostBackAction(
new PageReloadBehavior(
secondaryResponse: new SecondaryResponse(
new BlobFileResponse(BlobStorageStatics.GetFirstFileFromCollection(fileCollectionId.Value).FileId, () => true),
false))));
})));
components.Add(download);
}
else if (!setup.OmitNoExistingFileMessage)
{
components.Add(new GenericPhrasingContainer(Translation.NoExistingFile.ToComponents()));
}
RsFile uploadedFile = null;
var fileUploadDisplayedPmv = new PageModificationValue <string>();
components.AddRange(
new FileUpload(
displaySetup: fileUploadDisplayedPmv.ToCondition(bool.TrueString.ToCollection()).ToDisplaySetup(),
validationPredicate: setup.UploadValidationPredicate,
validationErrorNotifier: setup.UploadValidationErrorNotifier,
validationMethod: (postBackValue, validator) => {
if (requireUploadIfNoFile && file == null && postBackValue == null)
{
validator.NoteErrorAndAddMessage(Translation.PleaseUploadAFile);
setup.UploadValidationErrorNotifier?.Invoke();
return;
}
uploadedFile = postBackValue;
setup.UploadValidationMethod?.Invoke(postBackValue, validator);
}).ToFormItem()
.ToComponentCollection());
var fileUploadDisplayedHiddenFieldId = new HiddenFieldId();
if (file != null)
{
components.Add(
new EwfButton(
new StandardButtonStyle(Translation.ClickHereToReplaceExistingFile, buttonSize: ButtonSize.ShrinkWrap),
displaySetup: fileUploadDisplayedPmv.ToCondition(bool.FalseString.ToCollection()).ToDisplaySetup(),
behavior: new ChangeValueBehavior(fileUploadDisplayedHiddenFieldId, bool.TrueString)));
}
children = new GenericFlowContainer(
BlobManagementStatics.GetThumbnailControl(file, setup.ThumbnailResourceGetter)
.Append <FlowComponent>(new StackList(from i in components select i.ToCollection().ToComponentListItem()))
.Materialize(),
displaySetup: setup.DisplaySetup,
classes: setup.Classes,
etherealContent: new EwfHiddenField((file == null).ToString(), id: fileUploadDisplayedHiddenFieldId, pageModificationValue: fileUploadDisplayedPmv)
.PageComponent.ToCollection()).ToCollection();
modificationMethod = () => {
if (fileCollectionId == null)
{
fileCollectionId = BlobStorageStatics.SystemProvider.InsertFileCollection();
}
if (uploadedFile != null)
{
BlobStorageStatics.SystemProvider.DeleteFilesLinkedToFileCollection(fileCollectionId.Value);
BlobStorageStatics.SystemProvider.InsertFile(
fileCollectionId.Value,
uploadedFile.FileName,
uploadedFile.Contents,
BlobStorageStatics.GetContentTypeForPostedFile(uploadedFile));
}
idSetter(fileCollectionId.Value);
};
}
