Added failed and aborted handlers

Signed-off-by: timoreo <contact@timoreo.fr>

launcher/JavaDownloader.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <QString>
+#include "net/NetJob.h"
 #include "tasks/Task.h"
 
 class JavaDownloader : public Task {
@@ -10,9 +11,11 @@ class JavaDownloader : public Task {
     explicit JavaDownloader(bool isLegacy, const QString& OS) : m_isLegacy(isLegacy), m_OS(OS) {}
 
     void executeTask() override;
+    [[nodiscard]] bool canAbort() const override { return true; }
     static void showPrompts(QWidget* parent = nullptr);
 
    private:
     bool m_isLegacy;
     const QString& m_OS;
+    static void abortNetJob(NetJob* elementDownload);
 };