File: BasicEdit.h

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/** Copyright (C) 2006, Ian Paul Larsen.
 **
 **  This program is free software; you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License as published by
 **  the Free Software Foundation; either version 2 of the License, or
 **  (at your option) any later version.
 **
 **  This program is distributed in the hope that it will be useful,
 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 **  GNU General Public License for more details.
 **
 **  You should have received a copy of the GNU General Public License along
 **  with this program; if not, write to the Free Software Foundation, Inc.,
 **  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **/


#ifndef __BASICEDIT_H
#define __BASICEDIT_H

#include <qglobal.h>

#include <QtWidgets/QApplication>
#include <QtWidgets/QPlainTextEdit>
#include <QtWidgets/QMainWindow>
#include <QKeyEvent>
#include <QList>
#include <QMimeData>

#include <QMimeDatabase>

#include "ViewWidgetIFace.h"

class BasicEdit : public QPlainTextEdit, public ViewWidgetIFace
{
	Q_OBJECT

	public:
        BasicEdit(const QString &defaulttitle = QString());
		~BasicEdit();

        void saveFile(bool);
		void findString(QString, bool, bool, bool);
        void replaceString(QString, QString, bool, bool, bool, bool);
		QString getCurrentWord();
		void lineNumberAreaPaintEvent(QPaintEvent *event);
        void lineNumberAreaMouseClickEvent(QMouseEvent *event);
        void lineNumberAreaMouseWheelEvent(QWheelEvent *event);
		int lineNumberAreaWidth();
        QList<int> *breakPoints;
        void updateBreakPointsList();
		void setFont(QFont);
        int runState; //0 - stop, 1-run, 2-debug
        QString title;
        QString windowtitle;
        QString filename;
        QString path;
        QAction *action;
        void setTitle(QString newTitle);
        void dropEvent(QDropEvent *event);
        void dragEnterEvent(QDragEnterEvent *event);
        bool undoButton;
        bool redoButton;
        bool copyButton;
        bool isBreakPoint();


	public slots:
		void saveProgram();
        void saveAllStep(int);
		void saveAsProgram();
        void cursorMove();
		void goToLine(int);
		void seekLine(int);
		void slotPrint();
		void beautifyProgram();
		void slotWhitespace(bool);
        void highlightCurrentLine();
		int  indentSelection();
		void unindentSelection();
        void clearBreakPoints();
        void toggleBreakPoint();
        void updateTitle();
        void setEditorRunState(int);
        void fileChangedOnDiskSlot(QString);


	signals:
		void changeStatusBar(QString);
        void updateWindowTitle(BasicEdit*);
        void addFileToRecentList(QString);
        void updateEditorButtons();
        void setCurrentEditorTab(BasicEdit*);


	protected:
		void keyPressEvent(QKeyEvent *);
        void resizeEvent(QResizeEvent *event);

	private:
		const int STATECLEAR = -1;
		const int STATEBREAKPOINT = 1;
		int currentLine;
		int startPos;
		int linePos;
        QWidget *lineNumberArea;
        int rightClickBlockNumber;
        int lastLineNumberAreaWidth = -1;
        bool fileChangedOnDiskFlag; //used to mark this event during running a program
        void handleFileChangedOnDisk();

	private slots:
        void updateLineNumberAreaWidth(int newBlockCount);
        void updateLineNumberArea(const QRect &, int);
        void slotUndoAvailable(bool);
        void slotRedoAvailable(bool);
        void slotCopyAvailable(bool);
        void actionWasTriggered();
};


#endif