Remove variants from QtConcurrent in main window

The std::variants weren't used and were making the code more complex to
no advantage. All code that would have benefited from variants has
already been moved to QThreads elsewhere

5 files changed, 10 insertions, 16 deletions

diff --git a/src/archive/base_archive.h b/src/archive/base_archive.h
index 7d52cd5..bf43306 100644
--- a/src/archive/base_archive.h
+++ b/src/archive/base_archive.h
@@ -29,7 +29,7 @@ public:
     };
 
     virtual ~Archive() {};
-    virtual std::variant<QString, InitError> init() = 0;
+    virtual InitError init() = 0;
 
     static Archive* create_archive(ArchiveType archive_type, const QString& main_filename);
 
diff --git a/src/archive/mastodon.cpp b/src/archive/mastodon.cpp
index 50253c6..781f928 100644
--- a/src/archive/mastodon.cpp
+++ b/src/archive/mastodon.cpp
@@ -19,7 +19,7 @@
 
 MastodonArchive::MastodonArchive(const QString& filename) : Archive(filename) {}
 
-std::variant<QString, MastodonArchive::InitError> MastodonArchive::init() {
+MastodonArchive::InitError MastodonArchive::init() {
     QFile outbox_file(main_filename);
 
     if (!outbox_file.open(QIODevice::ReadOnly | QIODevice::Text))
diff --git a/src/archive/mastodon.h b/src/archive/mastodon.h
index 0d57d7a..75bc7ec 100644
--- a/src/archive/mastodon.h
+++ b/src/archive/mastodon.h
@@ -15,7 +15,7 @@ class MastodonArchive : public Archive {
 public:
     MastodonArchive(const QString& filename);
     ~MastodonArchive();
-    std::variant<QString, InitError> init();
+    InitError init();
 
     void update_status_list(ViewStatusTypes allowed_types, QListWidget *parent);
     APActivity* get_activity(ArchiveItemRef index, Hinting_t hinting = {});
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 82f4b37..12a71b8 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -25,7 +25,7 @@ MainWindow::MainWindow(QWidget *parent)
     connect(ui->buttonCopy, &QPushButton::clicked, ui->actionCopy_status, &QAction::trigger);
     connect(ui->buttonRandom, &QPushButton::clicked, ui->actionRandom_status, &QAction::trigger);
     connect(ui->buttonSearch, &QPushButton::clicked, ui->actionFind, &QAction::trigger);
-    connect(&archive_thread_watcher, &QFutureWatcher<std::variant<QString, Archive::InitError>>::finished, this, &MainWindow::archive_thread_watcher_done);
+    connect(&archive_thread_watcher, &QFutureWatcher<Archive::InitError>::finished, this, &MainWindow::archive_thread_watcher_done);
 }
 
 MainWindow::~MainWindow()
@@ -281,13 +281,8 @@ void MainWindow::finish_open_file(const Archive::InitError& parse_error) {
 }
 
 void MainWindow::archive_thread_watcher_done() {
-    std::variant<QString, Archive::InitError> result = archive_thread_watcher.result();
-
-    // For MainWindow::on_listWidget_itemActivated
-    if (std::get_if<Archive::InitError>(&result)) {
-        // For MainWindow::open_file
-        if (const Archive::InitError* parse_error = std::get_if<Archive::InitError>(&result))
-            finish_open_file(*parse_error);
-    } else if (not std::get_if<QString>(&result))
-        qDebug() << "What, the variant is weird";
+    Archive::InitError result = archive_thread_watcher.result();
+
+    if (result)
+        finish_open_file(result);
 }
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 22f5b29..7e46cec 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -4,7 +4,6 @@
 #include <QListWidgetItem>
 #include <QLocale>
 #include <QFutureWatcher>
-#include <variant>
 
 #include "archive/base_archive.h"
 #include "src/list_item.h"
@@ -65,7 +64,7 @@ private:
     void open_file(const QString &filename);
     void archive_thread_watcher_done();
 
-    std::variant<QString, Archive::InitError> start_listWidget_itemActivated(StatusListItem* status);
+    Archive::InitError start_listWidget_itemActivated(StatusListItem* status);
     void finish_open_file(const Archive::InitError& parse_error);
     void settingsDialog_done(int result);
 
@@ -81,7 +80,7 @@ private:
     bool view_filters_changed = false;
 
     Archive *data_archive = nullptr;
-    QFutureWatcher<std::variant<QString, Archive::InitError>> archive_thread_watcher;
+    QFutureWatcher<Archive::InitError> archive_thread_watcher;
 
     QLocale locale_context;
 };