main.cpp Example File

    /****************************************************************************
     **
     ** Portions Copyright (C) 2012 Research In Motion Limited.
     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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     ** Contact: Research In Motion Ltd. (http://www.rim.com/company/contact/)
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the examples of the BB10 Platform and is derived
     ** from a similar file that is part of the Qt Toolkit.
     **
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    #include <bb/cascades/Application>
    #include <bb/cascades/Control>
    #include <bb/cascades/QmlDocument>
    #include <bb/cascades/Page>

    #include <QtCore/QFinalState>
    #include <QtCore/QState>
    #include <QtCore/QStateMachine>

    #include "factorial.hpp"
    #include "transitions.hpp"

    using namespace bb::cascades;

    Q_DECL_EXPORT int main(int argc, char **argv)
    {
        Application app(argc, argv);

        Factorial factorial;

        // Create the state machine
        QStateMachine machine;

        // Create the 'compute' state as child of the state machine
        QState *compute = new QState(&machine);

        // Initialize the 'fac', 'x' and 'xorig' properties of the Factorial object whenever the compute state is entered
        compute->assignProperty(&factorial, "fac", 1);
        compute->assignProperty(&factorial, "x", 6);
        compute->assignProperty(&factorial, "xorig", 6);

        /**
         * Add the custom transition to the compute state.
         * Note: This transition has the compute state as source and target state.
         */
        compute->addTransition(new FactorialLoopTransition(&factorial));

        // Create a final state
        QFinalState *done = new QFinalState(&machine);

        // Add a custom transition with the 'compute' state as source state and the 'done' state as target state
        FactorialDoneTransition *doneTransition = new FactorialDoneTransition(&factorial);
        doneTransition->setTargetState(done);
        compute->addTransition(doneTransition);

        // Set the 'compute' state as initial state of the state machine
        machine.setInitialState(compute);

        // Load the UI description from main.qml
        QmlDocument *qml = QmlDocument::create("asset:///main.qml");

        // Make the Factorial and StateMachine object available to the UI as context properties
        qml->setContextProperty("_factorial", &factorial);
        qml->setContextProperty("_machine", &machine);

        // Create the application scene
        AbstractPane *appPage = qml->createRootObject<AbstractPane>();
        Application::instance()->setScene(appPage);

        return Application::exec();
    }