Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef TEXTEDIT_H
+#define TEXTEDIT_H
+
+#include <QMainWindow>
+#include <QMap>
+#include <QPointer>
+
+QT_FORWARD_DECLARE_CLASS(QAction)
+QT_FORWARD_DECLARE_CLASS(QComboBox)
+QT_FORWARD_DECLARE_CLASS(QFontComboBox)
+QT_FORWARD_DECLARE_CLASS(QTextEdit)
+QT_FORWARD_DECLARE_CLASS(QTextCharFormat)
+QT_FORWARD_DECLARE_CLASS(QMenu)
+
+class TextEdit : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    TextEdit(QWidget *parent = 0);
+
+protected:
+    virtual void closeEvent(QCloseEvent *e);
+
+private:
+    void setupFileActions();
+    void setupEditActions();
+    void setupTextActions();
+    bool load(const QString &f);
+    bool maybeSave();
+    void setCurrentFileName(const QString &fileName);
+
+private slots:
+    void fileNew();
+    void fileOpen();
+    bool fileSave();
+    bool fileSaveAs();
+    void filePrint();
+    void filePrintPreview();
+    void filePrintPdf();
+
+    void textBold();
+    void textUnderline();
+    void textItalic();
+    void textFamily(const QString &f);
+    void textSize(const QString &p);
+    void textStyle(int styleIndex);
+    void textColor();
+    void textAlign(QAction *a);
+
+    void currentCharFormatChanged(const QTextCharFormat &format);
+    void cursorPositionChanged();
+
+    void clipboardDataChanged();
+    void about();
+    void printPreview(QPrinter *);
+
+private:
+    void mergeFormatOnWordOrSelection(const QTextCharFormat &format);
+    void fontChanged(const QFont &f);
+    void colorChanged(const QColor &c);
+    void alignmentChanged(Qt::Alignment a);
+
+    QAction *actionSave,
+        *actionTextBold,
+        *actionTextUnderline,
+        *actionTextItalic,
+        *actionTextColor,
+        *actionAlignLeft,
+        *actionAlignCenter,
+        *actionAlignRight,
+        *actionAlignJustify,
+        *actionUndo,
+        *actionRedo,
+        *actionCut,
+        *actionCopy,
+        *actionPaste;
+
+    QComboBox *comboStyle;
+    QFontComboBox *comboFont;
+    QComboBox *comboSize;
+
+    QToolBar *tb;
+    QString fileName;
+    QTextEdit *textEdit;
+};
+
+#endif