codeeditor.h

#ifndef CODEEDITOR_H
#define CODEEDITOR_H

#include <QPlainTextEdit>
#include <QObject>
#include <QFileInfo>
#include <QCompleter>
#include <QStringListModel>

#include "syntaxhighlighter.h"
#include "assetmanager.h"

class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;

class LineNumberArea;


class CodeEditor : public QPlainTextEdit
{
    Q_OBJECT

    public:
        CodeEditor(QWidget *parent = 0);
        ~CodeEditor();

        void lineNumberAreaPaintEvent(QPaintEvent *event);
        void footerBarAreaPaintEvent(QPaintEvent *event);
        int lineNumberAreaWidth();
        bool loadFile(const QString &);
        QFileInfo * getCurrentFileInfo() const;
        void load(AssetManager *am);
        void save();
        void setAutoCompleter(QCompleter *inCompleter);
        QCompleter * getCompleter() const;
        QString textUnderCursor() const;
        void setAutoCompleteModel(QStringList &);
        void changeLanguageSupport(QString supportFileName);
        void highlightText(QRegExp &);
        void resizeFooter(int height);

        AssetManager *assetManager;
        SyntaxHighlighter *syntaxHighlighter;
        QFileInfo *currentFile;
        void setFooterHeight(int height);
        void replaceSearchMatchedText(const QString &, QRegExp &);

    protected:
        void keyPressEvent(QKeyEvent *e) Q_DECL_OVERRIDE;
        //void keyReleaseEvent(QKeyEvent *e) Q_DECL_OVERRIDE;
        void focusInEvent(QFocusEvent *e) Q_DECL_OVERRIDE;
        void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE;

    private slots:
        void updateLineNumberAreaWidth(int newBlockCount);
        void highlightAndSearchCurrentLine();
        void updateLineNumberArea(const QRect &, int);
        void insertCompletion(const QString &completion);

    private:
        QWidget *lineNumberArea;
        QWidget *footerBarArea;
        QCompleter *completer;
        QStringListModel * autoCompleteModel;
        QStringList * dynamicAutocompleteSuggestions;
        int footerHeight;
        int tabStop;
        void appendCodeLine(QString &line);
};


class LineNumberArea : public QWidget
{
    public:
        LineNumberArea(CodeEditor *editor) : QWidget(editor) {
            codeEditor = editor;
        }

        QSize sizeHint() const Q_DECL_OVERRIDE {
            return QSize(codeEditor->lineNumberAreaWidth(), 0);
        }

    protected:
        void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE {
            codeEditor->lineNumberAreaPaintEvent(event);
        }

    private:
        CodeEditor *codeEditor;
};

#endif