testmodelui.h Example File
incomingcalls/testmodelui.h

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    #ifndef TESTMODELUI_H
    #define TESTMODELUI_H

    //
    //  W A R N I N G
    //  -------------
    //
    // This file is not part of the Qt API.  It exists purely as an
    // implementation detail.  This header file may change from version to
    // version without notice, or even be removed.
    //
    // We mean it.
    //

    #include <QWidget>
    #include <QListView>

    #include "qtcontactsglobal.h"  // for QContactLocalId...
    #include "qcontactlistmodel.h"
    #include "filterdialog.h"

    class QStackedWidget;
    class QTextEdit;
    class QLabel;
    class QPushButton;

    QTM_BEGIN_NAMESPACE
    class QContactFetchRequest;
    class QContactManager;
    QTM_END_NAMESPACE

    QTM_USE_NAMESPACE
    class TestModelView : public QListView
    {
        Q_OBJECT

    public:
        TestModelView(QContactManager* manager = 0);
        ~TestModelView();

        QContactLocalId currentId() const;
        QVariant currentData(QContactListModel::ContactDataRole role) const;

    private:
        QContactListModel *model;
    };

    class QPushButton;
    class TestModelUi : public QWidget
    {
        Q_OBJECT

    public:
        TestModelUi();
        ~TestModelUi();

    public slots:
        void populateContacts();
        void dataAvailable(QContactFetchRequest* request, bool appendOnly);
        void filterResults(QContactFetchRequest* request, bool appendOnly);
        void filterFound();

        void findContact();
        void showFilterDialog();
        void finishedFindContact();
        void dial();
        void incoming();
        void talking();
        void hangup();
        void missedCall();

    private:
        QContactManager *manager;
        FilterDialog *dialog;
        TestModelView *list;
        QTextEdit *textEdit;
        QStackedWidget *viewArea;
        QPushButton *leftButton;
        QPushButton *middleButton;
        QPushButton *rightButton;

        QTimer *incomingCallTimer; // we generate incoming calls from this
        QTimer *dialTimer;         // we simulate them answering after x seconds
        QTimer *answerTimer;       // incoming calls are ignored after y seconds
        QLabel *missedCalls;       // the display label for missed calls
        QLabel *missedCallsNbr;    // the count is displayed in this widget
        int nbrMissedCalls;

        enum CallState {
            WaitingState = 0,
            IncomingState,
            DialingState,
            TalkingState
        };
        CallState currentState;

        QContactFetchRequest* fetchRequest;
        QContactFetchRequest* filterRequest;
        QString talkingToName;
        QString talkingToNumber;
        QString talkingToDetails;
        QString talkingToFirstLine;
    };

    #endif