Move the qt models to their own folder

Felt like the src folder was getting a bit crowded so move all the models to a folder named models.

src/models/emojimodel.h

@@ -0,0 +1,125 @@
+// SPDX-FileCopyrightText: 2018 Black Hat <bhat@encom.eu.org>
+// SPDX-License-Identifier: GPL-3.0-only
+
+#pragma once
+
+#include <QAbstractListModel>
+#include <QObject>
+#include <QSettings>
+
+struct Emoji {
+    Emoji(QString unicode, QString shortname, bool isCustom = false)
+        : unicode(std::move(unicode))
+        , shortName(std::move(shortname))
+        , isCustom(isCustom)
+    {
+    }
+    Emoji(QString unicode, QString shortname, QString description)
+        : unicode(std::move(unicode))
+        , shortName(std::move(shortname))
+        , description(std::move(description))
+    {
+    }
+    Emoji() = default;
+
+    friend QDataStream &operator<<(QDataStream &arch, const Emoji &object)
+    {
+        arch << object.unicode;
+        arch << object.shortName;
+        return arch;
+    }
+
+    friend QDataStream &operator>>(QDataStream &arch, Emoji &object)
+    {
+        arch >> object.unicode;
+        arch >> object.shortName;
+        object.isCustom = object.unicode.startsWith("image://");
+        return arch;
+    }
+
+    QString unicode;
+    QString shortName;
+    QString description;
+    bool isCustom = false;
+
+    Q_GADGET
+    Q_PROPERTY(QString unicode MEMBER unicode)
+    Q_PROPERTY(QString shortName MEMBER shortName)
+    Q_PROPERTY(QString description MEMBER description)
+    Q_PROPERTY(bool isCustom MEMBER isCustom)
+};
+
+Q_DECLARE_METATYPE(Emoji)
+
+class EmojiModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QVariantList history READ history NOTIFY historyChanged)
+    Q_PROPERTY(QVariantList categories READ categories CONSTANT)
+    Q_PROPERTY(QVariantList categoriesWithCustom READ categoriesWithCustom CONSTANT)
+
+public:
+    static EmojiModel &instance()
+    {
+        static EmojiModel _instance;
+        return _instance;
+    }
+
+    enum RoleNames {
+        ShortNameRole = Qt::DisplayRole,
+        UnicodeRole,
+        InvalidRole = 50,
+        DisplayRole = 51,
+        ReplacedTextRole = 52,
+        DescriptionRole = 53,
+    };
+    Q_ENUM(RoleNames);
+
+    enum Category {
+        Custom,
+        Search,
+        SearchNoCustom,
+        History,
+        HistoryNoCustom,
+        Smileys,
+        People,
+        Nature,
+        Food,
+        Activities,
+        Travel,
+        Objects,
+        Symbols,
+        Flags,
+        Component,
+    };
+    Q_ENUM(Category)
+
+    [[nodiscard]] int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    [[nodiscard]] QVariant data(const QModelIndex &idx, int role = Qt::DisplayRole) const override;
+    [[nodiscard]] QHash<int, QByteArray> roleNames() const override;
+
+    Q_INVOKABLE QVariantList history() const;
+    Q_INVOKABLE static QVariantList filterModel(const QString &filter, bool limit = true);
+    Q_INVOKABLE static QVariantList filterModelNoCustom(const QString &filter, bool limit = true);
+
+    Q_INVOKABLE QVariantList emojis(Category category) const;
+
+    Q_INVOKABLE QVariantList tones(const QString &baseEmoji) const;
+
+    QVariantList categories() const;
+    QVariantList categoriesWithCustom() const;
+
+Q_SIGNALS:
+    void historyChanged();
+
+public Q_SLOTS:
+    void emojiUsed(const QVariant &modelData);
+
+private:
+    static QHash<Category, QVariantList> _emojis;
+
+    // TODO: Port away from QSettings
+    QSettings m_settings;
+    EmojiModel(QObject *parent = nullptr);
+};