simplelistcontainer.cpp

一个基于SYMBIAN的列表项目程序。适合于初学者学习SYMBIAN之用。是《SERIES 60》的书中源码～

/**
* 
* @brief Definition of CSimpleListContainer
*
* Copyright (c) EMCC Software Ltd 2003
* @version 1.0
*/

// INCLUDE FILES

// Class include
#include "SimpleListContainer.h"

// System includes
#include <akniconarray.h> // CAknIcon
#include <aknlists.h> // CAknSingleStyleListBox
#include <barsread.h> // TResource Reader
#include <eikclbd.h> // CColumnListBoxData
#include <eikmenub.h> // CEikMenuBar
#include <SimpleList.mbg> // icons
#include <SimpleList.rsg> // R_SIMPLELIST_SAVED_GAMES_LISTBOX
#include <stringloader.h> // StringLoader
#include <uikon.hrh> // TKeyCode #defines
#include <aknnotewrappers.h>

// CONSTANTS
const TInt KNumberOfIcons(2);

// N.B. #define'd as DLL cannot contain writeable static data
#define KListPosition TPoint(0,0) 



// ================= MEMBER FUNCTIONS =======================

/**
* Symbian OS 2nd phase constructor.  Creates a Window for the controls, which it contains.
* Constructs a label and adds it to the window, which it then activates.
* @param aRect The rectangle for this window
*/		
void CSimpleListContainer::ConstructL(const TRect& aRect)
	{
	CreateWindowL();
	
	// Create the list
	CreateListL();	
	
	// Observe the list
	iSavedGamesListBox->SetListBoxObserver(this);
	
	// Set the icons in the list's drawer
	SetupListIconsL();
	
	// Set up scroll bars
	SetupScrollBarsL();
	
	SetRect(aRect);
	ActivateL();
	}

/**
* Constructs the iSavedGamesList, setting its window.
*/
void CSimpleListContainer::CreateListL()
	{
	// First phase construction
	iSavedGamesListBox = new (ELeave) CAknSingleGraphicStyleListBox;
	iSavedGamesListBox->SetContainerWindowL(*this);
	
	// Second Phase Construction
	TResourceReader reader;
	iEikonEnv->CreateResourceReaderLC(reader, R_SIMPLELIST_SAVED_GAMES_LISTBOX);
	iSavedGamesListBox->ConstructFromResourceL(reader);
	CleanupStack::PopAndDestroy(); // reader
	}

/**
* Creates vertical scrollbars for the list, which appear automatically when required.
*/
void CSimpleListContainer::SetupScrollBarsL()
	{
	iSavedGamesListBox->CreateScrollBarFrameL(ETrue);
	iSavedGamesListBox->ScrollBarFrame()->SetScrollBarVisibilityL(
		CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);
	}

/**
* Loads icons from a file and sets them in the drawer for iSavedGamesList
*/
void CSimpleListContainer::SetupListIconsL()
	{
	// Get the name of the file containing the icons	
	HBufC* iconFileName;
	iconFileName = StringLoader::LoadLC(R_ICON_FILE_NAME);	// Pushes iconFileName onto the Cleanup Stack.
	
	// Create an array of icons, reading them from the file
	CArrayPtr<CGulIcon>* icons = new(ELeave) CAknIconArray(KNumberOfIcons);
	CleanupStack::PushL(icons);
	icons->AppendL(iEikonEnv->CreateIconL(*iconFileName, EMbmSimplelist1player, EMbmSimplelist1player_mask));
	icons->AppendL(iEikonEnv->CreateIconL(*iconFileName, EMbmSimplelist2player, EMbmSimplelist1player_mask));
	CleanupStack::Pop(icons);
	CleanupStack::PopAndDestroy(iconFileName);
	
	iSavedGamesListBox->ItemDrawer()->ColumnData()->SetIconArray(icons); // passing ownership of icons
	}


/**
* Symbian OS 2 phase constructor.
* Constructs the CSimpleListContainer using the NewLC method, popping
* the constructed object from the CleanupStack before returning it.
* 
* @param aRect The rectangle for this window
* @return The newly constructed CSimpleListContainer
*/
CSimpleListContainer* CSimpleListContainer::NewL(const TRect& aRect)
	{
	CSimpleListContainer* self = CSimpleListContainer::NewLC(aRect);
	CleanupStack::Pop(self);
	return self;
	}

/**
* Symbian OS 2 phase constructor.
* Constructs the CSimpleListContainer using the constructor and ConstructL 
* method, leaving the constructed object on the CleanupStack before returning it.
* 
* @param aRect The rectangle for this window
* @return The newly constructed CSimpleListContainer
*/
CSimpleListContainer* CSimpleListContainer::NewLC(const TRect& aRect)
	{
	CSimpleListContainer* self = new (ELeave) CSimpleListContainer;
	CleanupStack::PushL(self);
	self->ConstructL(aRect);
	return self;
	}

/** 
* Destructor.  Frees up memory for the iLabel.
*/
CSimpleListContainer::~CSimpleListContainer()
	{
	delete iSavedGamesListBox;
	}

/**
*	
* Called by framework when the view size is changed.  Resizes the
* iLabel accordingly.
*
*/
void CSimpleListContainer::SizeChanged()
	{
	iSavedGamesListBox->SetExtent (KListPosition, iSavedGamesListBox->MinimumSize());
	}

/**
* Called by the framework in compound controls	
* @return The number of controls in this CSimpleListContainer
*/
TInt CSimpleListContainer::CountComponentControls() const
	{
	return 1; // return number of controls inside this container
	}

/**
* Called by the framework in compound controls	
* @param The index of the control to return
* @return The control for aIndex
*/
CCoeControl* CSimpleListContainer::ComponentControl(TInt aIndex) const
	{
	switch (aIndex)
		{
		case 0:
			return iSavedGamesListBox;
		default:
			return NULL;
		}
	}

/**
* Called by the framework to draw this control.  Clears the area in 
* aRect.
* @param aRect in which to draw
*/
void CSimpleListContainer::Draw(const TRect& aRect) const
	{
	CWindowGc& gc = SystemGc();
	gc.Clear(aRect);
	}

/**
* Called by the framework whenever a key event occurs.	
* Passes the key event to the saved games list if it is not null, otherwise returns
* EKeyWasNotConsumed
* @param aKeyEvent the Key event which occured, e.g. select key pressed
* @param aType the type of Key event which occurred, e.g. key up, key down
* @return TKeyResponse EKeyWasNotConsumed if the key was not processed, EKeyWasConsumed if it was
*/
TKeyResponse CSimpleListContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
	{
	if (iSavedGamesListBox)
		return iSavedGamesListBox->OfferKeyEventL (aKeyEvent, aType);
	else
		return EKeyWasNotConsumed;
	}

/**
* Plays the currently select game in the iSavedGamesListBox, if one exists.  
* This is an empty implementation of this method
*/
void CSimpleListContainer::PlaySelectedGame()
	{
	CAknInformationNote* informationNote = new ( ELeave ) CAknInformationNote;
	informationNote->ExecuteLD( _L("TEST") );
	}

/**
* Called by the framework whenever a list event occurs for which this container
* is an observer.
* @param aListBoxEvent The type of event which occured
*
*/
void CSimpleListContainer::HandleListBoxEventL(CEikListBox* /*aListBox*/, TListBoxEvent aListBoxEvent)
	{
	// if the Select Key has been pressed
	if (aListBoxEvent == MEikListBoxObserver::EEventEnterKeyPressed) 
		{
		PlaySelectedGame();
		}
	}


// End of File