Discord-like Quick Switcher (#1588)

* Proof of Concept for Quick Switcher * Fix crash when suggestions are empty * QuickSwitcher: Use tab name instead of a single channel * Rebase later * Add missing include for <functional> * Move QuickSwitcher related classes into own subfolder * Refactor switcher list items Now, items are responsible for taking the right action when selected in the switcher list. This should allow for more focused code and responsibilities. * Add note about memory management * Add option to open channel in a new tab * Add support for using the mouse * Spawn switcher popup in the middle of the window Works reliably on i3 at least. Might need some additional testing on other WMs (and especially on Windows!). * Add some icons for switcher items Note that the final design of the list is not final but I do plan to incorporate these in the future. * Set Qt::Dialog window flag on switcher popup Prevents tiling window managers like i3 from trying to tile the window. * Rename "SwitcherItem" to "AbstractSwitcherItem" * Add comments about what items are inserted * Use custom model and view Still missing: Currently selected item is not highlighted yet. You can move between selected items with tab and arrow keys though. * Add helper function to convert QVariant to AbstractSwitcherItem * * Remove useless constant * Highlight currently selected switcher item * Use a different method for centering QuickSwitcherPopup window * QuickSwitcherModel: Add documentation * Add default parameter to QuickSwitcherModel::rowCount * QuickSwitcherPopup: Add comments * Remove outdated TODO * QuickSwitcherModel: Init vector with default capacity * Remove outdated comment * Add comment about 0 ms timeout interval * NewTabItem: Simplify interface * Only fetch opened splits once This is better than the prior approach since opened splits cannot change anyways while the switcher is open. * Use SplitContainer to pass information instead of custom type * Allow searching for tab titles as well Before this commit, only channel names could be searched. * Refactor switcher item interface to be more flexible Also show tab name and channel name in the switcher list. * Add documentation for AbstractSwitcherItem * Add documentation for NewTabItem * Add comments about {begin,end}{Insert,Remove}Rows * Remove unused method * Replace magic size with named constant * Add change log entry Co-authored-by: fourtf <tf.four@gmail.com>
2020-08-13 19:25:51 +02:00
parent ce57ad9b0d
commit a9080ceb3c
20 changed files with 927 additions and 11 deletions
@@ -0,0 +1,20 @@
+#include "widgets/dialogs/switcher/AbstractSwitcherItem.hpp"
+
+#include "Application.hpp"
+
+namespace chatterino {
+
+const QSize AbstractSwitcherItem::ICON_SIZE(32, 32);
+
+AbstractSwitcherItem *AbstractSwitcherItem::fromVariant(const QVariant &variant)
+{
+    // See https://stackoverflow.com/a/44503822 .
+    return static_cast<AbstractSwitcherItem *>(variant.value<void *>());
+}
+
+AbstractSwitcherItem::AbstractSwitcherItem(const QIcon &icon)
+    : icon_(icon)
+{
+}
+
+}  // namespace chatterino
@@ -0,0 +1,45 @@
+#pragma once
+
+namespace chatterino {
+
+class AbstractSwitcherItem
+{
+public:
+    /**
+     * @brief   Attempt to obtain an AbstractSwitcherItem * from the passed QVariant.
+     *
+     * @param   variant variant to try to convert to AbstractSwitcherItem *
+     *
+     * @return  an AbstractSwitcherItem * if the QVariant could be converted,
+     *          or nullptr if the variant did not contain AbstractSwitcherItem *
+     */
+    static AbstractSwitcherItem *fromVariant(const QVariant &variant);
+
+    virtual ~AbstractSwitcherItem() = default;
+
+    /**
+     * @brief   Since all switcher items are required to have an icon, we require it
+     *          in the base class constructor.
+     *
+     * @param   icon    icon to be displayed in the switcher list
+     */
+    AbstractSwitcherItem(const QIcon &icon);
+
+    /**
+     * @brief   Action to perform when this item is activated. Must be implemented in
+     *          subclasses.
+     */
+    virtual void action() = 0;
+
+    virtual void paint(QPainter *painter, const QRect &rect) const = 0;
+    virtual QSize sizeHint(const QRect &rect) const = 0;
+
+protected:
+    QIcon icon_;
+    static const QSize ICON_SIZE;
+};
+
+}  // namespace chatterino
+
+// This allows us to store AbstractSwitcherItem * as a QVariant
+Q_DECLARE_METATYPE(chatterino::AbstractSwitcherItem *);
@@ -0,0 +1,60 @@
+#include "widgets/dialogs/switcher/NewTabItem.hpp"
+
+#include "Application.hpp"
+#include "providers/twitch/TwitchIrcServer.hpp"
+#include "singletons/Fonts.hpp"
+#include "singletons/Theme.hpp"
+#include "singletons/WindowManager.hpp"
+#include "widgets/Notebook.hpp"
+#include "widgets/Window.hpp"
+#include "widgets/helper/NotebookTab.hpp"
+#include "widgets/splits/Split.hpp"
+
+namespace chatterino {
+
+NewTabItem::NewTabItem(const QString &channelName)
+    : AbstractSwitcherItem(QIcon(":/switcher/plus.svg"))
+    , channelName_(channelName)
+    , text_(QString(TEXT_FORMAT).arg(channelName))
+{
+}
+
+void NewTabItem::action()
+{
+    auto &nb = getApp()->windows->getMainWindow().getNotebook();
+    SplitContainer *container = nb.addPage(true);
+
+    Split *split = new Split(container);
+    split->setChannel(
+        getApp()->twitch.server->getOrAddChannel(this->channelName_));
+    container->appendSplit(split);
+}
+
+void NewTabItem::paint(QPainter *painter, const QRect &rect) const
+{
+    painter->save();
+
+    painter->setRenderHint(QPainter::Antialiasing, true);
+
+    // TODO(leon): Right pen/brush/font settings?
+    painter->setPen(getApp()->themes->splits.header.text);
+    painter->setBrush(Qt::SolidPattern);
+    painter->setFont(getApp()->fonts->getFont(FontStyle::UiMediumBold, 1.0));
+
+    QRect iconRect(rect.topLeft(), ICON_SIZE);
+    this->icon_.paint(painter, iconRect, Qt::AlignLeft | Qt::AlignVCenter);
+
+    QRect textRect =
+        QRect(iconRect.topRight(),
+              QSize(rect.width() - iconRect.width(), iconRect.height()));
+    painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, this->text_);
+
+    painter->restore();
+}
+
+QSize NewTabItem::sizeHint(const QRect &rect) const
+{
+    return QSize(rect.width(), ICON_SIZE.height());
+}
+
+}  // namespace chatterino
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "widgets/dialogs/switcher/AbstractSwitcherItem.hpp"
+
+namespace chatterino {
+
+class NewTabItem : public AbstractSwitcherItem
+{
+public:
+    /**
+     * @brief   Construct a new NewTabItem that opens a passed channel in a new
+     *          tab.
+     *
+     * @param   channelName name of channel to open
+     */
+    NewTabItem(const QString &channelName);
+
+    /**
+     * @brief   Open the channel passed in the constructor in a new tab.
+     */
+    virtual void action() override;
+
+    virtual void paint(QPainter *painter, const QRect &rect) const;
+    virtual QSize sizeHint(const QRect &rect) const;
+
+private:
+    static constexpr const char *TEXT_FORMAT = "Open channel \"%1\" in new tab";
+    QString channelName_;
+    QString text_;
+};
+
+}  // namespace chatterino
@@ -0,0 +1,61 @@
+#include "widgets/dialogs/switcher/QuickSwitcherModel.hpp"
+
+namespace chatterino {
+
+QuickSwitcherModel::QuickSwitcherModel(QWidget *parent)
+    : QAbstractListModel(parent)
+    , items_(INITIAL_ITEMS_SIZE)
+{
+}
+
+QuickSwitcherModel::~QuickSwitcherModel()
+{
+    for (AbstractSwitcherItem *item : this->items_)
+    {
+        delete item;
+    }
+}
+
+int QuickSwitcherModel::rowCount(const QModelIndex &parent) const
+{
+    return this->items_.size();
+}
+
+QVariant QuickSwitcherModel::data(const QModelIndex &index,
+                                  int /* role */) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    if (index.row() >= this->items_.size())
+        return QVariant();
+
+    auto item = this->items_.at(index.row());
+    // See https://stackoverflow.com/a/44503822 .
+    return QVariant::fromValue(static_cast<void *>(item));
+}
+
+void QuickSwitcherModel::addItem(AbstractSwitcherItem *item)
+{
+    // {begin,end}InsertRows needs to be called to notify attached views
+    this->beginInsertRows(QModelIndex(), this->items_.size(),
+                          this->items_.size());
+    this->items_.append(item);
+    this->endInsertRows();
+}
+
+void QuickSwitcherModel::clear()
+{
+    // {begin,end}RemoveRows needs to be called to notify attached views
+    this->beginRemoveRows(QModelIndex(), 0, this->items_.size() - 1);
+
+    for (AbstractSwitcherItem *item : this->items_)
+    {
+        delete item;
+    }
+    this->items_.clear();
+
+    this->endRemoveRows();
+}
+
+}  // namespace chatterino
@@ -0,0 +1,59 @@
+#pragma once
+
+#include "widgets/dialogs/switcher/AbstractSwitcherItem.hpp"
+
+namespace chatterino {
+
+class QuickSwitcherModel : public QAbstractListModel
+{
+public:
+    QuickSwitcherModel(QWidget *parent = nullptr);
+    ~QuickSwitcherModel();
+
+    /**
+     * @brief   Reimplements QAbstractItemModel::rowCount.
+     *
+     * @return  number of items currrently present in this model
+     */
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+
+    /**
+     * @brief   Reimplements QAbstractItemModel::data. Currently, the role parameter
+     *          is not used and an AbstractSwitcherItem * is always returned.
+     *
+     * @param   index   index of item to fetch data from
+     * @param   role    (not used)
+     *
+     * @return  AbstractSwitcherItem * (wrapped as QVariant) at index
+     */
+    QVariant data(const QModelIndex &index, int role) const;
+
+    /**
+     * @brief   Add an item to this QuickSwitcherModel. It will be displayed in
+     *          attached views.
+     *
+     *          NOTE: The model will take ownership of the pointer. In particular,
+     *          the same item should not be passed to multiple QuickSwitcherModels.
+     *
+     * @param   item    item to add to the model
+     */
+    void addItem(AbstractSwitcherItem *item);
+
+    /**
+     * @brief   Clears this QuickSwitcherModel of all items. This will delete all
+     *          AbstractSwitcherItems added after the last invokation of
+     *          QuickSwitcherModel::clear (and invalidate their pointers).
+     */
+    void clear();
+
+private:
+    /*
+     * On my system, the default QVector capacity is 0. 20 is an attempt at preventing
+     * frequent reallocations. The number is not backed by any user data but rather a
+     * guess at how many switcher items are probably going to be added.
+     */
+    static constexpr int INITIAL_ITEMS_SIZE = 20;
+
+    QVector<AbstractSwitcherItem *> items_;
+};
+}  // namespace chatterino
@@ -0,0 +1,200 @@
+#include "widgets/dialogs/switcher/QuickSwitcherPopup.hpp"
+
+#include "Application.hpp"
+#include "singletons/WindowManager.hpp"
+#include "util/LayoutCreator.hpp"
+#include "widgets/Notebook.hpp"
+#include "widgets/Window.hpp"
+#include "widgets/dialogs/switcher/NewTabItem.hpp"
+#include "widgets/dialogs/switcher/SwitchSplitItem.hpp"
+#include "widgets/helper/NotebookTab.hpp"
+
+namespace chatterino {
+
+namespace {
+    using namespace chatterino;
+
+    QSet<SplitContainer *> openPages()
+    {
+        QSet<SplitContainer *> pages;
+
+        auto &nb = getApp()->windows->getMainWindow().getNotebook();
+        for (int i = 0; i < nb.getPageCount(); ++i)
+        {
+            pages.insert(static_cast<SplitContainer *>(nb.getPageAt(i)));
+        }
+
+        return pages;
+    }
+}  // namespace
+
+const QSize QuickSwitcherPopup::MINIMUM_SIZE(500, 300);
+
+QuickSwitcherPopup::QuickSwitcherPopup(QWidget *parent)
+    : BasePopup(FlagsEnum<BaseWindow::Flags>{BaseWindow::Flags::Frameless,
+                                             BaseWindow::Flags::TopMost},
+                parent)
+    , switcherModel_(this)
+    , switcherItemDelegate_(this)
+    , openPages_(openPages())
+{
+    this->setWindowFlag(Qt::Dialog);
+    this->setActionOnFocusLoss(BaseWindow::ActionOnFocusLoss::Delete);
+    this->setMinimumSize(QuickSwitcherPopup::MINIMUM_SIZE);
+
+    this->initWidgets();
+
+    this->setStayInScreenRect(true);
+    const QRect geom = parent->geometry();
+    // This places the popup in the middle of the parent widget
+    this->setGeometry(QStyle::alignedRect(Qt::LeftToRight, Qt::AlignCenter,
+                                          this->size(), geom));
+}
+
+QuickSwitcherPopup::~QuickSwitcherPopup()
+{
+}
+
+void QuickSwitcherPopup::initWidgets()
+{
+    LayoutCreator<QWidget> creator(this->BaseWindow::getLayoutContainer());
+    auto vbox = creator.setLayoutType<QVBoxLayout>();
+
+    {
+        vbox.emplace<QLineEdit>().assign(&this->ui_.searchEdit);
+        QObject::connect(this->ui_.searchEdit, &QLineEdit::textChanged, this,
+                         &QuickSwitcherPopup::updateSuggestions);
+
+        this->ui_.searchEdit->installEventFilter(this);
+    }
+
+    {
+        vbox.emplace<QListView>().assign(&this->ui_.list);
+        this->ui_.list->setSelectionMode(QAbstractItemView::SingleSelection);
+        this->ui_.list->setSelectionBehavior(QAbstractItemView::SelectItems);
+        this->ui_.list->setModel(&this->switcherModel_);
+        this->ui_.list->setItemDelegate(&this->switcherItemDelegate_);
+
+        /*
+         * I also tried handling key events using the according slots but
+         * it lead to all kind of problems that did not occur with the
+         * eventFilter approach.
+         */
+        QObject::connect(
+            this->ui_.list, &QListView::clicked, this,
+            [this](const QModelIndex &index) {
+                auto *item = AbstractSwitcherItem::fromVariant(index.data());
+                item->action();
+                this->close();
+            });
+    }
+}
+
+void QuickSwitcherPopup::updateSuggestions(const QString &text)
+{
+    this->switcherModel_.clear();
+
+    // Add items for navigating to different splits
+    for (auto *sc : this->openPages_)
+    {
+        const QString &tabTitle = sc->getTab()->getTitle();
+        const auto splits = sc->getSplits();
+
+        // First, check for splits on this page
+        for (auto *split : splits)
+        {
+            if (split->getChannel()->getName().contains(text,
+                                                        Qt::CaseInsensitive))
+            {
+                SwitchSplitItem *item = new SwitchSplitItem(split);
+                this->switcherModel_.addItem(item);
+
+                // We want to continue the outer loop so we need a goto
+                goto nextPage;
+            }
+        }
+
+        // Then check if tab title matches
+        if (tabTitle.contains(text, Qt::CaseInsensitive))
+        {
+            SwitchSplitItem *item = new SwitchSplitItem(sc);
+            this->switcherModel_.addItem(item);
+            continue;
+        }
+
+    nextPage:;
+    }
+
+    // Add item for opening a channel in a new tab
+    if (!text.isEmpty())
+    {
+        NewTabItem *item = new NewTabItem(text);
+        this->switcherModel_.addItem(item);
+    }
+
+    const auto &startIdx = this->switcherModel_.index(0);
+    this->ui_.list->setCurrentIndex(startIdx);
+
+    /*
+     * Timeout interval 0 means the call will be delayed until all window events
+     * have been processed (cf. https://doc.qt.io/qt-5/qtimer.html#interval-prop).
+     */
+    QTimer::singleShot(0, [this] { this->adjustSize(); });
+}
+
+bool QuickSwitcherPopup::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == QEvent::KeyPress)
+    {
+        auto *keyEvent = static_cast<QKeyEvent *>(event);
+        int key = keyEvent->key();
+
+        const QModelIndex &curIdx = this->ui_.list->currentIndex();
+        const int curRow = curIdx.row();
+        const int count = this->switcherModel_.rowCount(curIdx);
+
+        if (key == Qt::Key_Down || key == Qt::Key_Tab)
+        {
+            if (count <= 0)
+                return true;
+
+            const int newRow = (curRow + 1) % count;
+
+            this->ui_.list->setCurrentIndex(curIdx.siblingAtRow(newRow));
+            return true;
+        }
+        else if (key == Qt::Key_Up || key == Qt::Key_Backtab)
+        {
+            if (count <= 0)
+                return true;
+
+            int newRow = curRow - 1;
+            if (newRow < 0)
+                newRow += count;
+
+            this->ui_.list->setCurrentIndex(curIdx.siblingAtRow(newRow));
+            return true;
+        }
+        else if (key == Qt::Key_Enter || key == Qt::Key_Return)
+        {
+            if (count <= 0)
+                return true;
+
+            const auto index = this->ui_.list->currentIndex();
+            auto *item = AbstractSwitcherItem::fromVariant(index.data());
+
+            item->action();
+
+            this->close();
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+
+    return false;
+}
+
+}  // namespace chatterino
@@ -0,0 +1,49 @@
+#pragma once
+
+#include "common/Channel.hpp"
+#include "widgets/BasePopup.hpp"
+#include "widgets/dialogs/switcher/QuickSwitcherModel.hpp"
+#include "widgets/dialogs/switcher/SwitcherItemDelegate.hpp"
+#include "widgets/splits/Split.hpp"
+#include "widgets/splits/SplitContainer.hpp"
+
+#include <functional>
+
+namespace chatterino {
+
+class QuickSwitcherPopup : public BasePopup
+{
+public:
+    /**
+     * @brief   Construct a new QuickSwitcherPopup.
+     *
+     * @param   parent  Parent widget of the popup. The popup will be placed
+     *                  in the center of the parent widget.
+     */
+    explicit QuickSwitcherPopup(QWidget *parent = nullptr);
+
+    ~QuickSwitcherPopup();
+
+protected:
+    virtual bool eventFilter(QObject *watched, QEvent *event) override;
+
+public slots:
+    void updateSuggestions(const QString &text);
+
+private:
+    static const QSize MINIMUM_SIZE;
+
+    struct {
+        QLineEdit *searchEdit{};
+        QListView *list{};
+    } ui_;
+
+    QuickSwitcherModel switcherModel_;
+    SwitcherItemDelegate switcherItemDelegate_;
+
+    QSet<SplitContainer *> openPages_;
+
+    void initWidgets();
+};
+
+}  // namespace chatterino
@@ -0,0 +1,90 @@
+#include "widgets/dialogs/switcher/SwitchSplitItem.hpp"
+
+#include "Application.hpp"
+#include "singletons/Fonts.hpp"
+#include "singletons/Theme.hpp"
+#include "widgets/helper/NotebookTab.hpp"
+
+namespace chatterino {
+
+SwitchSplitItem::SwitchSplitItem(Split *split)
+    : AbstractSwitcherItem(QIcon(":switcher/switch.svg"))
+    , split_(split)
+    , container_(split->getContainer())
+{
+}
+
+SwitchSplitItem::SwitchSplitItem(SplitContainer *container)
+    : AbstractSwitcherItem(QIcon(":switcher/switch.svg"))
+    , container_(container)
+{
+}
+
+void SwitchSplitItem::action()
+{
+    auto &nb = getApp()->windows->getMainWindow().getNotebook();
+    nb.select(this->container_);
+
+    /*
+     * If the item is referring to a specific channel, select the
+     * corresponding split.
+     */
+    if (this->split_)
+    {
+        this->container_->setSelected(this->split_);
+    }
+}
+
+void SwitchSplitItem::paint(QPainter *painter, const QRect &rect) const
+{
+    painter->save();
+
+    painter->setRenderHint(QPainter::Antialiasing, true);
+
+    // TODO(leon): Right pen/brush/font settings?
+    painter->setPen(getApp()->themes->splits.header.text);
+    painter->setBrush(Qt::SolidPattern);
+    painter->setFont(getApp()->fonts->getFont(FontStyle::UiMediumBold, 1.0));
+
+    QRect iconRect(rect.topLeft(), ICON_SIZE);
+    this->icon_.paint(painter, iconRect, Qt::AlignLeft | Qt::AlignVCenter);
+
+    if (this->split_)
+    {
+        // Draw channel name and name of the containing tab
+        const auto availableTextWidth = rect.width() - iconRect.width();
+        QRect leftTextRect =
+            QRect(iconRect.topRight(),
+                  QSize(0.3 * availableTextWidth, iconRect.height()));
+
+        painter->drawText(leftTextRect, Qt::AlignLeft | Qt::AlignVCenter,
+                          this->split_->getChannel()->getName());
+
+        QRect rightTextRect =
+            QRect(leftTextRect.topRight(),
+                  QSize(0.7 * availableTextWidth, iconRect.height()));
+
+        painter->setFont(getApp()->fonts->getFont(FontStyle::UiMedium, 1.0));
+        painter->drawText(rightTextRect, Qt::AlignRight | Qt::AlignVCenter,
+                          this->container_->getTab()->getTitle());
+    }
+    else if (!this->split_ && this->container_)
+    {
+        // Only draw name of tab
+        QRect textRect =
+            QRect(iconRect.topRight(),
+                  QSize(rect.width() - iconRect.width(), iconRect.height()));
+
+        painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter,
+                          this->container_->getTab()->getTitle());
+    }
+
+    painter->restore();
+}
+
+QSize SwitchSplitItem::sizeHint(const QRect &rect) const
+{
+    return QSize(rect.width(), ICON_SIZE.height());
+}
+
+}  // namespace chatterino
@@ -0,0 +1,29 @@
+#pragma once
+
+#include "widgets/dialogs/switcher/AbstractSwitcherItem.hpp"
+
+#include "singletons/WindowManager.hpp"
+#include "widgets/Notebook.hpp"
+#include "widgets/Window.hpp"
+#include "widgets/helper/NotebookTab.hpp"
+#include "widgets/splits/Split.hpp"
+
+namespace chatterino {
+
+class SwitchSplitItem : public AbstractSwitcherItem
+{
+public:
+    SwitchSplitItem(Split *split);
+    SwitchSplitItem(SplitContainer *container);
+
+    virtual void action() override;
+
+    virtual void paint(QPainter *painter, const QRect &rect) const;
+    virtual QSize sizeHint(const QRect &rect) const;
+
+private:
+    Split *split_{};
+    SplitContainer *container_{};
+};
+
+}  // namespace chatterino
@@ -0,0 +1,48 @@
+#include "widgets/dialogs/switcher/SwitcherItemDelegate.hpp"
+
+#include "widgets/dialogs/switcher/AbstractSwitcherItem.hpp"
+
+namespace chatterino {
+
+SwitcherItemDelegate::SwitcherItemDelegate(QObject *parent)
+    : QStyledItemDelegate(parent)
+{
+}
+
+SwitcherItemDelegate::~SwitcherItemDelegate()
+{
+}
+
+void SwitcherItemDelegate::paint(QPainter *painter,
+                                 const QStyleOptionViewItem &option,
+                                 const QModelIndex &index) const
+{
+    auto *item = AbstractSwitcherItem::fromVariant(index.data());
+
+    if (item)
+    {
+        if (option.state & QStyle::State_Selected)
+            painter->fillRect(option.rect, option.palette.highlight());
+
+        item->paint(painter, option.rect);
+    }
+    else
+    {
+        QStyledItemDelegate::paint(painter, option, index);
+    }
+}
+
+QSize SwitcherItemDelegate::sizeHint(const QStyleOptionViewItem &option,
+                                     const QModelIndex &index) const
+{
+    auto *item = AbstractSwitcherItem::fromVariant(index.data());
+
+    if (item)
+    {
+        return item->sizeHint(option.rect);
+    }
+
+    return QStyledItemDelegate::sizeHint(option, index);
+}
+
+}  // namespace chatterino
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <QStyledItemDelegate>
+
+namespace chatterino {
+
+class SwitcherItemDelegate : public QStyledItemDelegate
+{
+    Q_OBJECT
+
+public:
+    SwitcherItemDelegate(QObject *parent = nullptr);
+    ~SwitcherItemDelegate();
+
+    void paint(QPainter *painter, const QStyleOptionViewItem &option,
+               const QModelIndex &index) const override;
+
+    QSize sizeHint(const QStyleOptionViewItem &option,
+                   const QModelIndex &index) const override;
+};
+
+}  // namespace chatterino