TextEditor.h

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#pragma once
 
// OpenTwin header
#include "OTCore/CoreTypes.h"
#include "OTGui/TextEditorCfg.h"
#include "OTWidgets/ColorStyle.h"
#include "OTWidgets/PlainTextEdit.h"
 
// Qt header
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qregularexpression.h>
 
class QPaintEvent;
class QResizeEvent;
 
namespace ot {
    class TextEditor;
    class SyntaxHighlighter;
    class TextEditorSearchPopup;
    
    class OT_WIDGETS_API_EXPORT TextEditorLineNumberArea : public QWidget {
    public:
        TextEditorLineNumberArea(TextEditor* _editor);
        virtual ~TextEditorLineNumberArea();
 
        QSize sizeHint() const override;
 
    protected:
        void paintEvent(QPaintEvent * _event) override;
 
    private:
        TextEditor* m_editor;
    };
 
    // ###################################################################################################################################
 
    // ###################################################################################################################################
 
    // ###################################################################################################################################
 
    class OT_WIDGETS_API_EXPORT TextEditor : public PlainTextEdit {
        Q_OBJECT
        OT_DECL_NOCOPY(TextEditor)
    public:
        TextEditor(QWidget* _parent = (QWidget*)nullptr);
        virtual ~TextEditor();
 
        virtual void setupFromConfig(const TextEditorCfg& _config, bool _isUpdate);
 
        int lineNumberAreaWidth(void) const;
        void lineNumberAreaPaintEvent(QPaintEvent * _event);
 
        void setContentChanged(void);
        void setContentSaved(void);
        bool getContentChanged(void) const;
 
        void setCode(const QString& _text);
        void setCode(const QStringList& _lines);
 
        QStringList code(void) const;
 
        void storeSyntaxHighlighter(SyntaxHighlighter* _highlighter);
 
        SyntaxHighlighter* getSyntaxHighlighter(void) { return m_syntaxHighlighter; };
 
        SyntaxHighlighter* takeSyntaxHighlighter(void);
 
        void setTabSpaces(int _spaces) { m_tabSpaces = _spaces; };
        int tabSpaces(void) const { return m_tabSpaces; };
 
        void setNewLineWithSamePrefix(bool _enabled) { m_newLineSamePrefix = _enabled; };
        bool newLineWithSamePrefix(void) const { return m_newLineSamePrefix; };
 
        void setDuplicateLineShortcutEnabled(bool _enabled) { m_enableDuplicateLineShortcut = _enabled; };
        bool isDuplicateLineShortcutEnabled(void) const { return m_enableDuplicateLineShortcut; };
 
        void setEnableSameTextHighlighting(bool _enabled) { m_enableSameTextHighlighting = _enabled; };
        bool isSameTextHighlightingEnabled(void) const { return m_enableSameTextHighlighting; };
 
    Q_SIGNALS:                          
        void saveRequested(void);
 
    protected:
        virtual void contentSaved(void) {};
        virtual void contentChanged(void) {};
        virtual void keyPressEvent(QKeyEvent* _event) override;
        virtual void resizeEvent(QResizeEvent * _event) override;
        virtual void wheelEvent(QWheelEvent* _event) override;
        
    private Q_SLOTS:
        void slotUpdateLineNumberAreaWidth(int _newBlockCount);
        void slotHighlightCurrentLine();
        void slotUpdateLineNumberArea(const QRect & _rect, int _dy);
        void slotSaveRequested(void);
        void slotFindRequested(void);
        void slotFindClosing(void);
        void slotDuplicateLine(void);
        void slotCurrentColorStyleChanged(const ot::ColorStyle& _style);
        void slotSelectionChanged(void);
        void slotContentChange(bool _changed); 
 
    private:
        friend class TextEditorSearchPopup;
 
        void getCurrentLineSelection(QList<QTextEdit::ExtraSelection>& _selections);
        void addAdditionalSelections(QList<QTextEdit::ExtraSelection>& _selections);
 
        TextEditorSearchPopup* m_searchPopup;
        
        int m_tabSpaces;
        bool m_newLineSamePrefix;
        bool m_enableDuplicateLineShortcut;
        bool m_enableSameTextHighlighting;
        int m_sameTextHighlightingMinimum;
 
        TextEditorLineNumberArea* m_lineNumberArea;
        SyntaxHighlighter*        m_syntaxHighlighter;
    };
}