#ifndef SLOPPYFOCUS_H
#define SLOPPYFOCUS_H

#include <KTextEditor/Plugin>
#include <KTextEditor/MainWindow>
#include <KTextEditor/ConfigPage>
#include <KTextEditor/View>

#include <QObject>
#include <QTimer>
#include <QPointer>
#include <QElapsedTimer>

class SloppyFocusPlugin : public KTextEditor::Plugin
{
    Q_OBJECT

public:
    explicit SloppyFocusPlugin(QObject *parent, const QVariantList &args);
    ~SloppyFocusPlugin() override;

    QObject *createView(KTextEditor::MainWindow *mainWindow) override;
    int configPages() const override;
    KTextEditor::ConfigPage *configPage(int number, QWidget *parent) override;

    // Configuration
    int focusDelay() const { return m_focusDelay; }
    int minimumStayTime() const { return m_minimumStayTime; }
    bool raiseOnFocus() const { return m_raiseOnFocus; }
    bool ignoreDialogs() const { return m_ignoreDialogs; }
    bool ignoreFloatingWidgets() const { return m_ignoreFloatingWidgets; }

    void setFocusDelay(int ms);
    void setMinimumStayTime(int ms);
    void setRaiseOnFocus(bool raise);
    void setIgnoreDialogs(bool ignore);
    void setIgnoreFloatingWidgets(bool ignore);

    void readConfig();
    void writeConfig();

Q_SIGNALS:
    void configChanged();

private:
    int m_focusDelay = 150;
    int m_minimumStayTime = 50;
    bool m_raiseOnFocus = false;
    bool m_ignoreDialogs = true;
    bool m_ignoreFloatingWidgets = true;
};

class SloppyFocusView : public QObject
{
    Q_OBJECT

public:
    explicit SloppyFocusView(SloppyFocusPlugin *plugin, KTextEditor::MainWindow *mainWindow);
    ~SloppyFocusView() override;

protected:
    bool eventFilter(QObject *obj, QEvent *event) override;

private Q_SLOTS:
    void activatePendingPane();
    void onConfigChanged();

private:
    QWidget *paneForWidget(QWidget *widget) const;
    bool shouldIgnoreFocus() const;

    SloppyFocusPlugin *m_plugin;
    KTextEditor::MainWindow *m_mainWindow;
    QTimer m_focusTimer;
    QElapsedTimer m_lastFocusChange;
    QPointer<QWidget> m_pendingPane;
    QPointer<QWidget> m_currentPane;
};

class SloppyFocusConfigPage : public KTextEditor::ConfigPage
{
    Q_OBJECT

public:
    explicit SloppyFocusConfigPage(SloppyFocusPlugin *plugin, QWidget *parent);
    ~SloppyFocusConfigPage() override;

    QString name() const override;
    QString fullName() const override;
    QIcon icon() const override;

    void apply() override;
    void defaults() override;
    void reset() override;

private:
    SloppyFocusPlugin *m_plugin;
    class QSpinBox *m_focusDelaySpin;
    class QSpinBox *m_minimumStaySpin;
    class QCheckBox *m_raiseOnFocusCheck;
    class QCheckBox *m_ignoreDialogsCheck;
    class QCheckBox *m_ignoreFloatingCheck;
};

#endif // SLOPPYFOCUS_H