Implement Recent files list and menu

1 files changed, 70 insertions, 0 deletions

diff --git a/src/recent_files.cpp b/src/recent_files.cpp
new file mode 100644
index 0000000..2382f1a
--- /dev/null
+++ b/src/recent_files.cpp
@@ -0,0 +1,70 @@
+#include "recent_files.h"
+#include <QFileInfo>
+
+RecentFiles::RecentFiles(unsigned int size, bool force_empty) : size(size) {
+    if (not force_empty)
+        list = settings_interface.read_setting("ui/recent_files").value<QStringList>();
+}
+
+RecentFiles::~RecentFiles() {
+    if (has_list_changed) {
+        settings_interface.write_setting("ui/recent_files", list);
+        settings_interface.commit();
+    }
+}
+
+RecentFiles::QMenuPtr RecentFiles::create_menu(const QString& title, QWidget* parent) {
+    if (menu) return menu;
+
+    menu = std::make_shared<QMenu>(title, parent);
+    generate_menu_actions();
+
+    return menu;
+}
+
+void RecentFiles::generate_menu_actions() {
+    menu->clear();
+
+    if (not list.isEmpty()) {
+        int i = 1;
+        for (const QString& path : list) {
+            Action* action = new Action(QStringLiteral("&%1. %2").arg(i++).arg(QFileInfo(path).fileName()));
+            action->file_path = path;
+            menu->addAction(action);
+        }
+    } else {
+        Action* action = new Action(QWidget::tr("No recent files"));
+        action->setStatusTip(QWidget::tr("To view recent files, open a file"));
+        action->setEnabled(false);
+        menu->addAction(action);
+    }
+}
+
+void RecentFiles::add_file(const QString& path) {
+    if (not list.contains(path)) {
+        list.prepend(path);
+        if (list.size() > size)
+#if (QT_VERSION >= QT_VERSION_CHECK(6,0,0))
+            list.resize(size);
+#else
+            do list.removeLast();
+            while (list.size() > size);
+#endif
+        has_list_changed = true;
+        generate_menu_actions();
+    }
+}
+
+const QStringList& RecentFiles::get_files() {
+    return list;
+}
+
+void RecentFiles::clear() {
+    list.empty();
+}
+
+RecentFiles::Action::Action(const QString &text, QObject *parent) : QAction(text, parent) {
+    connect(this, &QAction::triggered, this, [=](bool checked) {
+        emit this->chosen_file(file_path);
+    });
+}