AddressCompleter.h

// Author: Kang Lin <kl222@126.com>
 
#pragma once
 
#include <QLabel>
#include <QLineEdit>
#include <QListWidget>
#include <QVBoxLayout>
#include <QTimer>
#include <QSqlDatabase>
#include <QIcon>
#include <QPropertyAnimation>
 
class CHistoryDatabase;
 
class CAddressCompleterItem : public QWidget
{
    Q_OBJECT
public:
    explicit CAddressCompleterItem(const QString &title,
                                  const QString &url,
                                  const QIcon &icon,
                                  QWidget *parent = nullptr);
 
    QString title() const { return m_title; }
    QString url() const { return m_url; }
 
private:
    QString m_title;
    QString m_url;
    QLabel *m_iconLabel;
    QLabel *m_titleLabel;
    QLabel *m_urlLabel;
};
 
class CAddressCompleter : public QWidget
{
    Q_OBJECT
public:
    explicit CAddressCompleter(CHistoryDatabase* db, QWidget *parent = nullptr);
    ~CAddressCompleter();
 
    void attachToLineEdit(QLineEdit *lineEdit);
    void setMaxVisibleItems(int count);
 
signals:
    void urlSelected(const QString &url);
    void searchRequested(const QString &keyword);
    void sigCommand(const QString& szCmd);
 
protected:
    bool eventFilter(QObject *watched, QEvent *event) override;
    void showEvent(QShowEvent *event) override;
    void hideEvent(QHideEvent *event) override;
 
private Q_SLOTS:
    void onTextChanged(const QString &text);
    void onItemClicked(QListWidgetItem *item);
    virtual void performSearch();
    void moveToNextItem();
    void moveToPreviousItem();
    void selectCurrentItem();
 
private:
    void setupUI();
    void showCompleter();
    void hideCompleter();
    void updateCompleterPosition();
    QIcon getIconForUrl(const QString &url);
    void addSearchSuggestions(const QString &keyword);
 
    struct Command
    {
        QString title;
        QString cmd;
        QIcon icon;
    };
 
private:
    QLineEdit *m_pLineEdit;
    QString m_szEnter;
    QString m_szOldLineEditToolTip;
    QString m_szLineEditToolTip;
    QString m_szLineEditToolTipShow;
    QString m_szListWidgetToolTip;
    QListWidget *m_pListWidget;
    QTimer *m_pSearchTimer;
    QPropertyAnimation *m_pShowAnimation;
    QPropertyAnimation *m_pHideAnimation;
    int m_currentSelectedIndex;
    int m_maxVisibleItems;
    bool m_isCompleterVisible;
 
    CHistoryDatabase* m_pDatabase;
};