#pragma once

#include <QtWidgets/QWidget>
#include <QtWidgets/QPlainTextEdit>
#include <QtGui/QPaintEvent>
#include <QtGui/QResizeEvent>
#include <QtGui/QPixmap>
#include <QtGui/QTextCursor>
#include <QtCore/QSize>
#include <QtCore/QRect>
#include <QtCore/QString>
#include <QtCore/QVector>

class SeerEditorWidgetSourceArea : public QPlainTextEdit {

    Q_OBJECT

    public:
        SeerEditorWidgetSourceArea (QWidget* parent = 0);

        void                    enableLineNumberArea        (bool flag);
        bool                    lineNumberAreaEnabled       () const;

        void                    enableBreakPointArea        (bool flag);
        bool                    breakPointAreaEnabled       () const;

        void                    enableMiniMapArea           (bool flag);
        bool                    miniMapAreaEnabled          () const;

        void                    lineNumberAreaPaintEvent    (QPaintEvent* event);
        int                     lineNumberAreaWidth         ();

        void                    breakPointAreaPaintEvent    (QPaintEvent* event);
        int                     breakPointAreaWidth         ();

        void                    miniMapAreaPaintEvent       (QPaintEvent* event);
        int                     miniMapAreaWidth            ();

        bool                    isOpen                      () const;
        void                    open                        (const QString& fullname, const QString& file);
        const QString&          fullname                    () const;
        const QString&          file                        () const;
        void                    close                       ();
        void                    setCurrentLine              (int lineno);
        void                    scrollToLine                (int lineno);

        void                    clearCurrentLines           ();
        void                    addCurrentLine              (int lineno);

        void                    clearBreakpoints            ();
        void                    addBreakpoint               (int number, int lineno, bool enabled);
        bool                    hasBreakpointNumber         (int number) const;
        bool                    hasBreakpointLine           (int lineno) const;
        const QVector<int>&     breakpointNumbers           () const;
        const QVector<int>&     breakpointLines             () const;
        const QVector<bool>&    breakpointEnableds          () const;
        int                     breakpointLineToNumber      (int lineno) const;
        bool                    breakpointLineEnabled       (int lineno) const;

        void                    showContextMenu             (QMouseEvent* event);
        void                    showContextMenu             (QContextMenuEvent* event);
        void                    showContextMenu             (const QPoint& pos, const QPoint& globalPos);
        void                    setQuickBreakpoint          (QMouseEvent* event);

        void                    clearExpression             ();

    signals:
        void                    insertBreakpoint            (QString breakpoint);
        void                    deleteBreakpoints           (QString breakpoints);
        void                    enableBreakpoints           (QString breakpoints);
        void                    disableBreakpoints          (QString breakpoints);
        void                    runToLine                   (QString fullname, int lineno);
        void                    addVariableExpression       (QString expression);
        void                    refreshVariableValues       ();
        void                    evaluateVariableExpression  (int expressionid, QString expression);
        void                    addMemoryVisualize          (QString expression);
        void                    showSearchBar               (bool flag);

    public slots:
        void                    handleText                  (const QString& text);

    protected:
        void                    resizeEvent                 (QResizeEvent* event);
        void                    contextMenuEvent            (QContextMenuEvent* event);
        void                    keyPressEvent               (QKeyEvent* event);
        void                    mouseReleaseEvent           (QMouseEvent* event);
        bool                    event                       (QEvent* event);

    private slots:
        void                    highlightCurrentLines       ();
        void                    highlightCurrentLine        ();
        void                    unhighlightCurrentLine      ();

        void                    updateMarginAreasWidth      (int newBlockCount);
        void                    updateLineNumberArea        (const QRect& rect, int dy);
        void                    updateBreakPointArea        (const QRect& rect, int dy);
        void                    updateMiniMapArea           (const QRect& rect, int dy);

    private:
        QString                 _fullname;
        QString                 _file;
        bool                    _enableLineNumberArea;
        bool                    _enableBreakPointArea;
        bool                    _enableMiniMapArea;
        QVector<int>            _breakpointsNumbers;
        QVector<int>            _breakpointsLineNumbers;
        QVector<bool>           _breakpointsEnableds;
        QVector<QTextCursor>    _currentLineCursors;

        QTextCursor             _selectedExpressionCursor;
        int                     _selectedExpressionId;
        QString                 _selectedExpressionName;
        QString                 _selectedExpressionValue;
        bool                    _ctrlKeyPressed;

        QWidget*                _lineNumberArea;
        QWidget*                _breakPointArea;
        QWidget*                _miniMapArea;

        QPixmap*                _miniMapPixmap;
};

class SeerEditorWidgetLineNumberArea : public QWidget {
    public:
        SeerEditorWidgetLineNumberArea (SeerEditorWidgetSourceArea* editorWidget);

        QSize                   sizeHint                    () const override;

    protected:
        void                    paintEvent                  (QPaintEvent* event) override;
        void                    mouseDoubleClickEvent       (QMouseEvent* event) override;
        void                    mouseMoveEvent              (QMouseEvent* event) override;
        void                    mousePressEvent             (QMouseEvent* event) override;
        void                    mouseReleaseEvent           (QMouseEvent* event) override;


    private:
        SeerEditorWidgetSourceArea*       _editorWidget;
};

class SeerEditorWidgetBreakPointArea : public QWidget {
    public:
        SeerEditorWidgetBreakPointArea (SeerEditorWidgetSourceArea* editorWidget);

        QSize                   sizeHint                    () const override;

    protected:
        void                    paintEvent                  (QPaintEvent* event) override;
        void                    mouseDoubleClickEvent       (QMouseEvent* event) override;
        void                    mouseMoveEvent              (QMouseEvent* event) override;
        void                    mousePressEvent             (QMouseEvent* event) override;
        void                    mouseReleaseEvent           (QMouseEvent* event) override;


    private:
        SeerEditorWidgetSourceArea*       _editorWidget;
};

class SeerEditorWidgetMiniMapArea : public QWidget {
    public:
        SeerEditorWidgetMiniMapArea (SeerEditorWidgetSourceArea* editorWidget);

        QSize                   sizeHint                    () const override;

    protected:
        void                    paintEvent                  (QPaintEvent* event) override;
        void                    mouseDoubleClickEvent       (QMouseEvent* event) override;
        void                    mouseMoveEvent              (QMouseEvent* event) override;
        void                    mousePressEvent             (QMouseEvent* event) override;
        void                    mouseReleaseEvent           (QMouseEvent* event) override;


    private:
        SeerEditorWidgetSourceArea*       _editorWidget;
};

#include "ui_SeerEditorWidget.h"

class SeerEditorWidget : public QWidget, protected Ui::SeerEditorWidgetForm {

    Q_OBJECT

    public:
        explicit SeerEditorWidget (QWidget* parent = 0);
       ~SeerEditorWidget ();

        SeerEditorWidgetSourceArea*         sourceArea                  ();

        void                                handleLineNumberLineEdit    ();
        void                                handleSearchTextLineEdit    ();
        void                                handleSearchDownToolButton  ();
        void                                handleSearchUpToolButton    ();
        void                                handleCloseToolButton       ();

    public slots:
        void                                showSearchBar               (bool flag);
};