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# addressbook.h Example File
tutorials/addressbook/part6/addressbook.h

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     #ifndef ADDRESSBOOK_H
     #define ADDRESSBOOK_H

     #include <QWidget>
     #include <QMap>
     #include "finddialog.h"

     class QPushButton;
     class QLabel;
     class QLineEdit;
     class QTextEdit;

     class AddressBook : public QWidget
     {
         Q_OBJECT

     public:
         AddressBook(QWidget *parent = 0);
         enum Mode { NavigationMode, AddingMode, EditingMode };

     public slots:
         void addContact();
         void editContact();
         void submitContact();
         void cancel();
         void removeContact();
         void findContact();
         void next();
         void previous();
         void saveToFile();
         void loadFromFile();

     private:
         void updateInterface(Mode mode);

         QPushButton *addButton;
         QPushButton *editButton;
         QPushButton *removeButton;
         QPushButton *findButton;
         QPushButton *submitButton;
         QPushButton *cancelButton;
         QPushButton *nextButton;
         QPushButton *previousButton;
         QPushButton *loadButton;
         QPushButton *saveButton;
         QLineEdit *nameLine;
         QTextEdit *addressText;

         QMap<QString, QString> contacts;
         FindDialog *dialog;
         QString oldName;
         QString oldAddress;
         Mode currentMode;
     };

     #endif