Added the ability to add nicknames for users (#2981)

Co-authored-by: Mm2PL <mm2pl+gh@kotmisia.pl>
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/widgets/dialogs/SettingsDialog.cpp

@@ -17,6 +17,7 @@
 #include "widgets/settingspages/IgnoresPage.hpp"
 #include "widgets/settingspages/KeyboardSettingsPage.hpp"
 #include "widgets/settingspages/ModerationPage.hpp"
+#include "widgets/settingspages/NicknamesPage.hpp"
 #include "widgets/settingspages/NotificationPage.hpp"
 
 #include <QDialogButtonBox>
@@ -164,6 +165,7 @@ void SettingsDialog::addTabs()
     this->addTab([]{return new GeneralPage;},          "General",        ":/settings/about.svg");
     this->ui_.tabContainer->addSpacing(16);
     this->addTab([]{return new AccountsPage;},         "Accounts",       ":/settings/accounts.svg", SettingsTabId::Accounts);
+    this->addTab([]{return new NicknamesPage;},        "Nicknames",      ":/settings/accounts.svg");
     this->ui_.tabContainer->addSpacing(16);
     this->addTab([]{return new CommandPage;},          "Commands",       ":/settings/commands.svg");
     this->addTab([]{return new HighlightingPage;},     "Highlights",     ":/settings/notifications.svg");

src/widgets/settingspages/NicknamesPage.cpp

@@ -0,0 +1,48 @@
+#include "NicknamesPage.hpp"
+
+#include "controllers/nicknames/NicknamesModel.hpp"
+#include "singletons/Settings.hpp"
+#include "singletons/WindowManager.hpp"
+#include "util/LayoutCreator.hpp"
+#include "widgets/Window.hpp"
+#include "widgets/helper/EditableModelView.hpp"
+
+#include <QTableView>
+
+#include <QHeaderView>
+
+namespace chatterino {
+
+NicknamesPage::NicknamesPage()
+{
+    LayoutCreator<NicknamesPage> layoutCreator(this);
+    auto layout = layoutCreator.setLayoutType<QVBoxLayout>();
+
+    layout.emplace<QLabel>(
+        "Nicknames do not work with features such as search or user highlights."
+        "\nWith those features you will still need to use the user's original "
+        "name.");
+    EditableModelView *view =
+        layout
+            .emplace<EditableModelView>(
+                (new NicknamesModel(nullptr))
+                    ->initialized(&getSettings()->nicknames))
+            .getElement();
+
+    view->setTitles({"Username", "Nickname"});
+    view->getTableView()->horizontalHeader()->setSectionResizeMode(
+        QHeaderView::Interactive);
+    view->getTableView()->horizontalHeader()->setSectionResizeMode(
+        1, QHeaderView::Stretch);
+
+    view->addButtonPressed.connect([] {
+        getSettings()->nicknames.append(Nickname{"Username", "Nickname"});
+    });
+
+    QTimer::singleShot(1, [view] {
+        view->getTableView()->resizeColumnsToContents();
+        view->getTableView()->setColumnWidth(0, 250);
+    });
+}
+
+}  // namespace chatterino

src/widgets/settingspages/NicknamesPage.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "widgets/helper/EditableModelView.hpp"
+#include "widgets/settingspages/SettingsPage.hpp"
+
+#include <QStringListModel>
+
+class QVBoxLayout;
+
+namespace chatterino {
+
+class NicknamesPage : public SettingsPage
+{
+public:
+    NicknamesPage();
+};
+
+}  // namespace chatterino