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#ifndef FILTERWIDGET_H
#define FILTERWIDGET_H
#include <QObject>
#include <QLineEdit>
#include <QToolButton>
#include <QList>
#include <QAbstractItemView>
class EventFilter;
class FilterWidget;
class FilterWidgetProxyModel : public QSortFilterProxyModel
{
Q_OBJECT;
public:
FilterWidgetProxyModel(FilterWidget& fw, QWidget* parent=nullptr);
using QSortFilterProxyModel::invalidateFilter;
protected:
bool filterAcceptsRow(int row, const QModelIndex& parent) const override;
private:
FilterWidget& m_filter;
};
class FilterWidget : public QObject
{
Q_OBJECT;
public:
using predFun = std::function<bool (const QString& what)>;
FilterWidget();
void setEdit(QLineEdit* edit);
void setList(QAbstractItemView* list);
void clear();
bool empty() const;
QModelIndex map(const QModelIndex& index);
bool matches(predFun pred) const;
signals:
void changed();
private:
QLineEdit* m_edit;
QAbstractItemView* m_list;
FilterWidgetProxyModel* m_proxy;
EventFilter* m_eventFilter;
QToolButton* m_clear;
QString m_text;
QList<QList<QString>> m_compiled;
void unhook();
void createClear();
void hookEvents();
void repositionClearButton();
void onTextChanged();
void onResized();
void compile();
};
#endif // FILTERWIDGET_H
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