Comletely redo emoticon handling

src/models/imagecontentfiltermodel.h

@@ -0,0 +1,57 @@
+// SPDX-FileCopyrightText: 2024 Tobias Fella <tobias.fella@kde.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QSortFilterProxyModel>
+#include <QQmlEngine>
+
+#include "allimagecontentmodel.h"
+#include "imagecontentmodel.h"
+#include "recentimagecontentproxymodel.h"
+
+class ImageContentFilterModel : public QSortFilterProxyModel
+{
+    Q_OBJECT
+    QML_ELEMENT
+
+    Q_PROPERTY(bool stickers READ stickers WRITE setStickers NOTIFY stickersChanged)
+    Q_PROPERTY(bool emojis READ emojis WRITE setEmojis NOTIFY emojisChanged)
+    Q_PROPERTY(QString category READ category WRITE setCategory NOTIFY categoryChanged)
+    Q_PROPERTY(QString searchText READ searchText WRITE setSearchText NOTIFY searchTextChanged)
+
+public:
+    explicit ImageContentFilterModel(QObject *parent = nullptr);
+
+    bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override;
+
+    [[nodiscard]] bool stickers() const;
+    void setStickers(bool stickers);
+
+    [[nodiscard]] bool emojis() const;
+    void setEmojis(bool emojis);
+
+    QString category() const;
+    void setCategory(const QString &category);
+
+    QString searchText() const;
+    void setSearchText(const QString &text);
+
+Q_SIGNALS:
+    void stickersChanged();
+    void emojisChanged();
+    void categoryChanged();
+    void searchTextChanged();
+
+private:
+    bool m_stickers = true;
+    bool m_emojis = true;
+    QString m_category;
+    QString m_searchText;
+
+    AllImageContentModel m_allImageContentModel;
+    RecentImageContentProxyModel m_recentImageContentProxyModel;
+    ImageContentModel m_imageContentModel;
+
+    void updateSourceModel();
+};