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[#50] MailWindow: Add button to cancel document generation
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Lorenz Stechauner
2026-01-16 00:22:11 +01:00
parent 01739ba42e
commit a90be2644d
5 changed files with 110 additions and 37 deletions
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61
Elwig/Documents/Document.cs
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@@ -6,6 +6,7 @@ using System.Collections.Generic;
using System.Linq;
using Elwig.Helpers.Printing;
using MimeKit;
using System.Threading;
namespace Elwig.Documents {
public abstract partial class Document : IDisposable {
@@ -98,7 +99,7 @@ namespace Elwig.Documents {
return await Html.CompileRenderAsync(name, this); ;
}
public async Task Generate(IProgress<double>? progress = null) {
public async Task Generate(CancellationToken? cancelToken = null, IProgress<double>? progress = null) {
if (_pdfFile != null)
return;
progress?.Report(0.0);
@@ -108,36 +109,50 @@ namespace Elwig.Documents {
var pdf = new TempFile("pdf");
var tmpHtmls = new List<TempFile>();
var tmpFiles = new List<string>();
var n = m.Documents.Count();
int i = 0;
foreach (var doc in m.Documents) {
if (doc is PdfDocument) {
tmpFiles.Add(doc.PdfPath!);
continue;
try {
var n = m.Documents.Count();
int i = 0;
foreach (var doc in m.Documents) {
if (doc is PdfDocument) {
tmpFiles.Add(doc.PdfPath!);
continue;
}
if (cancelToken?.IsCancellationRequested ?? false)
throw new OperationCanceledException("Dokumentenerzeugung abgebrochen!");
var tmpHtml = new TempFile("html");
await File.WriteAllTextAsync(tmpHtml.FilePath, await doc.Render(), Utils.UTF8);
tmpHtmls.Add(tmpHtml);
tmpFiles.Add((doc is Letterhead ? "#" : "") + tmpHtml.FileName);
i++;
progress?.Report(GenerationProportion * 100 * i / n);
}
progress?.Report(GenerationProportion * 100);
var pages = await Pdf.Convert(tmpFiles, pdf.FileName, IsDoublePaged, cancelToken, new Progress<double>(v => progress?.Report(GenerationProportion * 100 + v * (1 - GenerationProportion))));
TotalPages = pages.Pages;
_pdfFile = pdf;
} catch {
pdf.Dispose();
throw;
} finally {
foreach (var tmp in tmpHtmls) {
tmp.Dispose();
}
var tmpHtml = new TempFile("html");
await File.WriteAllTextAsync(tmpHtml.FilePath, await doc.Render(), Utils.UTF8);
tmpHtmls.Add(tmpHtml);
tmpFiles.Add((doc is Letterhead ? "#" : "") + tmpHtml.FileName);
i++;
progress?.Report(GenerationProportion * 100 * i / n);
}
progress?.Report(GenerationProportion * 100);
var pages = await Pdf.Convert(tmpFiles, pdf.FileName, IsDoublePaged, new Progress<double>(v => progress?.Report(GenerationProportion * 100 + v * (1 - GenerationProportion))));
TotalPages = pages.Pages;
foreach (var tmp in tmpHtmls) {
tmp.Dispose();
}
_pdfFile = pdf;
} else {
if (cancelToken?.IsCancellationRequested ?? false)
throw new OperationCanceledException("Dokumentenerzeugung abgebrochen!");
var pdf = new TempFile("pdf");
using (var tmpHtml = new TempFile("html")) {
try {
using var tmpHtml = new TempFile("html");
await File.WriteAllTextAsync(tmpHtml.FilePath, await Render(), Utils.UTF8);
progress?.Report(50.0);
var pages = await Pdf.Convert(tmpHtml.FilePath, pdf.FilePath, IsDoublePaged);
var pages = await Pdf.Convert(tmpHtml.FilePath, pdf.FilePath, IsDoublePaged, cancelToken);
TotalPages = pages.Pages;
_pdfFile = pdf;
} catch {
pdf.Dispose();
throw;
}
_pdfFile = pdf;
}
progress?.Report(100.0);
}