TextEdit.h

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/***************************************************************************
 *   Copyright (c) 2004 Werner Mayer <wmayer[at]users.sourceforge.net>     *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  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 Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/


#ifndef GUI_TEXTEDIT_H
#define GUI_TEXTEDIT_H

#include <QListWidget>
#include <QPlainTextEdit>
#include "View.h"
#include "Window.h"

namespace Gui {
class CompletionBox;
class SyntaxHighlighter;

class CompletionList;
class GuiExport TextEdit : public QPlainTextEdit
{
    Q_OBJECT

public:
    TextEdit(QWidget *parent = 0);
    virtual ~TextEdit();

private Q_SLOTS:
    void complete();

protected:
    void keyPressEvent(QKeyEvent *);

private:
    void createListBox();

private:
    QString wordPrefix;
    int cursorPosition;
    CompletionList *listBox;
};

class SyntaxHighlighter;
class GuiExport TextEditor : public TextEdit, public WindowParameter
{
    Q_OBJECT

public:
    TextEditor(QWidget *parent = 0);
    ~TextEditor();
    void setSyntaxHighlighter(SyntaxHighlighter*);

    void OnChange(Base::Subject<const char*> &rCaller,const char* rcReason);

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

private Q_SLOTS:
    void updateLineNumberAreaWidth(int newBlockCount);
    void updateLineNumberArea(const QRect &, int);
    void highlightCurrentLine();

protected:
    void keyPressEvent (QKeyEvent * e);
    void paintEvent (QPaintEvent * e);
    void resizeEvent(QResizeEvent* e);
    virtual void drawMarker(int line, int x, int y, QPainter*);

private:
    SyntaxHighlighter* highlighter;
    QWidget* lineNumberArea;
    struct TextEditorP* d;

    friend class SyntaxHighlighter;
};

class LineMarker : public QWidget
{
    Q_OBJECT

public:
    LineMarker(TextEditor* editor);
    virtual ~LineMarker();

    QSize sizeHint() const;

protected:
    void paintEvent (QPaintEvent *);

private:
    TextEditor *textEditor;
};

class CompletionList : public QListWidget
{
    Q_OBJECT

public:
    CompletionList(QPlainTextEdit* parent);
    ~CompletionList();

    void findCurrentWord(const QString&);

protected:
    bool eventFilter(QObject *, QEvent *);

private Q_SLOTS:
    void completionItem(QListWidgetItem *item);

private:
    QPlainTextEdit* textEdit;
};

} // namespace Gui

#endif // GUI_TEXTEDIT_H