btobjectexchangeappview.h

This C++ code example provides a method for transferring objects or chunks of data from one device

/* Copyright (c) 2004, Nokia. All rights reserved */


#ifndef __BTOBJECTEXCHANGEAPPVIEW_H__
#define __BTOBJECTEXCHANGEAPPVIEW_H__

// INCLUDES
#include <coecntrl.h>
#include <aknlists.h>
#include "Log.h"

// CONSTANTS
static const TInt KMaxTIntLen = 8;
static const TInt KMessageHeaderLen = 8;
_LIT(KTabulator,"\t");

/**
* CBTObjectExchangeAppView
* An instance of the Application View object for the BTObjectExchange
* example application
*/
class CBTObjectExchangeAppView : public CCoeControl,
                                 public MLog
    {
    public: // Constructors and destructor

        /**
        * NewL()
        * Create a CBTObjectExchangeAppView object, which
        * will draw itself to aRect
        * @param aRect the rectangle this view will be drawn to
        * @return a pointer to the created instance of CBTObjectExchangeAppView
        */
        static CBTObjectExchangeAppView* NewL( const TRect& aRect );

        /**
        * NewLC()
        * Create a CBTObjectExchangeAppView object, which will draw
        * itself to aRect
        * @param aRect the rectangle this view will be drawn to
        * @return a pointer to the created instance of CBTObjectExchangeAppView
        */
        static CBTObjectExchangeAppView* NewLC( const TRect& aRect );

        /**
        * ~CBTObjectExchangeAppView()
        * Destroy the object and release all memory objects
        */
        virtual ~CBTObjectExchangeAppView();

    public: // Functions from base classes

        /**
        * ContainsEntries()
        * Does the view contain any log entries
        * @return ETrue if the list view contains 1 or more entries
        */
        TBool ContainsEntries();

        /**
        * ClearMessageListL()
        * Clears all the entries in the list view
        */
        void ClearMessageListL();

    public:  // from CCoeControl

        /**
        * OfferKeyEventL()
        * Offer the key event to the list box
        * @param aKeyEvent the key that caused the event
        * @param aType the type of event that occured
        * @return Indicates whether or not the key event was used.
        */
        TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent,
                                        TEventCode aType );

        /**
        * CountComponentControls()
        * Return the number of component controls
        * @return the number of component controls
        */
        TInt CountComponentControls() const;

        /**
        * ComponentControl()
        * Return a component control
        * @param aIndex the index of the control to return
        * @return the specified component control
        */
        CCoeControl* ComponentControl( TInt aIndex ) const;
        
        void SizeChanged();

    public: // from MLog

        /**
        * LogL()
        * Add an entry to the log.
        * @param aText the text of the entry
        */
        void LogL( const TDesC& aText );

        /**
        * LogL()
        * Add an entry to the log.
        * @param aText the text of the entry
        * @param aExtraText extra text to append onto the entry
        */
        void LogL( const TDesC& aText, const TDesC& aExtraText );

        /**
        * LogL()
        * Add an entry to the log.
        * @param aText the text of the entry
        * @param aNumber a number to append onto the entry
        */
        void LogL( const TDesC& aText, TInt aNumber );
       
    private: 
        TBool HandleJoystickPressL(TDesC& aLine);

    private:    // Constructors

        /**
        * ConstructL()
        * Perform the second phase construction of a
        * CBTObjectExchangeAppView object.
        * @param aRect the rectangle this view will be drawn to
        */
        void ConstructL( const TRect& aRect );

        /**
        * CBTObjectExchangeAppView
        * Perform the first phase of two phase construction
        */
        CBTObjectExchangeAppView();

    private:    // data

        /**
        * iListBox the control used to display the results
        * Owned by CBTObjectExchangeAppView
        */
        CEikTextListBox* iListBox;

        /**
        * iMessageList the list of messages to display
        * Not owned by CBTObjectExchangeAppView
        */
        CDesCArrayFlat* iMessageList;

        /** iMsgIndex the id for the next message in the list */
        TInt iMsgIndex;
    };

#endif // __BTOBJECTEXCHANGEAPPVIEW_H__

// End of File