IncrementalSearch.h

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#ifndef INCREMENTALSEARCH_H
#define INCREMENTALSEARCH_H
 
#include <string>
#include <optional>
#include <QString>
#include <memory>
 
class QRect;
class QPainter;
class QStyleOptionViewItem;
 
class IncrementalSearch {
private:
    struct M;
    M *m;
public:
    IncrementalSearch();
    ~IncrementalSearch();
    void init();
    bool open();
    void close();
    std::optional<std::string> queryMigemo(const char *word);
 
    static bool migemoEnabled();
    static std::string migemoDictDir();
    static std::string migemoDictPath();
    static bool setupMigemoDict();
    static void deleteMigemoDict();
 
    static IncrementalSearch *instance();
};
 
struct MigemoFilter {
    QString text;
    std::shared_ptr<QRegularExpression> re_;
    MigemoFilter() = default;
    MigemoFilter(const QString &text);
    bool isEmpty() const;
    void makeFilter(const QString &filtertext);
    bool match(QString text);
 
    static QString normalizeText(QString s);
 
    static int u16ncmp(const ushort *s1, const ushort *s2, int n);
 
    static void fillFilteredBG(QPainter *painter, QRect const &rect);
 
    static void drawText(QPainter *painter, QStyleOptionViewItem const &opt, QRect r, QString const &text);
    static void drawText_filted(QPainter *painter, QStyleOptionViewItem const &opt, QRect const &rect, MigemoFilter const &filter);
};
 
#endif // INCREMENTALSEARCH_H