exerciselistbox.cpp

symbian手机开发程序

/*
========================================================================
 Name        : ExerciseListBox.cpp
 Author      : 
 Copyright   : Your copyright notice
 Description : 
========================================================================
*/
// [[[ begin generated region: do not modify [Generated System Includes]
#include <barsread.h>
#include <stringloader.h>
#include <aknlists.h>
#include <eikenv.h>
#include <akniconarray.h>
#include <eikclbd.h>
#include <aknviewappui.h>
#include <eikappui.h>
#include <Exercise.rsg>
// ]]] end generated region [Generated System Includes]

// [[[ begin generated region: do not modify [Generated User Includes]
#include "ExerciseListBox.h"
#include "ExerciseListBoxView.h"
#include "Exercise.hrh"
// ]]] end generated region [Generated User Includes]

// [[[ begin generated region: do not modify [Generated Constants]
// ]]] end generated region [Generated Constants]

/**
 * First phase of Symbian two-phase construction. Should not 
 * contain any code that could leave.
 */
CExerciseListBox::CExerciseListBox()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	iListBox = NULL;
	// ]]] end generated region [Generated Contents]
	
	}
/** 
 * Destroy child controls.
 */
CExerciseListBox::~CExerciseListBox()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	delete iListBox;
	iListBox = NULL;
	// ]]] end generated region [Generated Contents]
	
	}
				
/**
 * Construct the control (first phase).
 *  Creates an instance and initializes it.
 *  Instance is not left on cleanup stack.
 * @param aRect bounding rectangle
 * @param aParent owning parent, or NULL
 * @param aCommandObserver command observer
 * @return initialized instance of CExerciseListBox
 */
CExerciseListBox* CExerciseListBox::NewL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CExerciseListBox* self = CExerciseListBox::NewLC( 
			aRect, 
			aParent, 
			aCommandObserver );
	CleanupStack::Pop( self );
	return self;
	}

/**
 * Construct the control (first phase).
 *  Creates an instance and initializes it.
 *  Instance is left on cleanup stack.
 * @param aRect The rectangle for this window
 * @param aParent owning parent, or NULL
 * @param aCommandObserver command observer
 * @return new instance of CExerciseListBox
 */
CExerciseListBox* CExerciseListBox::NewLC( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CExerciseListBox* self = new ( ELeave ) CExerciseListBox();
	CleanupStack::PushL( self );
	self->ConstructL( aRect, aParent, aCommandObserver );
	return self;
	}
			
/**
 * Construct the control (second phase).
 *  Creates a window to contain the controls and activates it.
 * @param aRect bounding rectangle
 * @param aCommandObserver command observer
 * @param aParent owning parent, or NULL
 */ 
void CExerciseListBox::ConstructL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	if ( aParent == NULL )
	    {
		CreateWindowL();
	    }
	else
	    {
	    SetContainerWindowL( *aParent );
	    }
	iFocusControl = NULL;
	iCommandObserver = aCommandObserver;
	InitializeControlsL();
	SetRect( aRect );
	ActivateL();
	// [[[ begin generated region: do not modify [Post-ActivateL initializations]
	// ]]] end generated region [Post-ActivateL initializations]
	
	}
			
/**
* Return the number of controls in the container (override)
* @return count
*/
TInt CExerciseListBox::CountComponentControls() const
	{
	return ( int ) ELastControl;
	}
				
/**
* Get the control with the given index (override)
* @param aIndex Control index [0...n) (limited by #CountComponentControls)
* @return Pointer to control
*/
CCoeControl* CExerciseListBox::ComponentControl( TInt aIndex ) const
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	switch ( aIndex )
		{
	case EListBox:
		return iListBox;
		}
	// ]]] end generated region [Generated Contents]
	
	// handle any user controls here...
	
	return NULL;
	}
				
/**
 *	Handle resizing of the container. This implementation will lay out
 *  full-sized controls like list boxes for any screen size, and will layout
 *  labels, editors, etc. to the size they were given in the UI designer.
 *  This code will need to be modified to adjust arbitrary controls to
 *  any screen size.
 */				
void CExerciseListBox::SizeChanged()
	{
	CCoeControl::SizeChanged();
	LayoutControls();
	// [[[ begin generated region: do not modify [Generated Contents]
			
	// ]]] end generated region [Generated Contents]
	
	}
				
// [[[ begin generated function: do not modify
/**
 * Layout components as specified in the UI Designer
 */
void CExerciseListBox::LayoutControls()
	{
	iListBox->SetExtent( TPoint( 0, 0 ), iListBox->MinimumSize() );
	}
// ]]] end generated function

/**
 *	Handle key events.
 */				
TKeyResponse CExerciseListBox::OfferKeyEventL( 
		const TKeyEvent& aKeyEvent, 
		TEventCode aType )
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	if ( aKeyEvent.iCode == EKeyLeftArrow 
		|| aKeyEvent.iCode == EKeyRightArrow )
		{
		// Listbox takes all events even if it doesn't use them
		return EKeyWasNotConsumed;
		}
	
	// ]]] end generated region [Generated Contents]
	
	if ( iFocusControl != NULL
		&& iFocusControl->OfferKeyEventL( aKeyEvent, aType ) == EKeyWasConsumed )
		{
		return EKeyWasConsumed;
		}
	return CCoeControl::OfferKeyEventL( aKeyEvent, aType );
	}
				
// [[[ begin generated function: do not modify
/**
 *	Initialize each control upon creation.
 */				
void CExerciseListBox::InitializeControlsL()
	{
	iListBox = new ( ELeave ) CAknSingleStyleListBox;
	iListBox->SetContainerWindowL( *this );
		{
		TResourceReader reader;
		iEikonEnv->CreateResourceReaderLC( reader, R_EXERCISE_LIST_BOX_LIST_BOX );
		iListBox->ConstructFromResourceL( reader );
		CleanupStack::PopAndDestroy(); // reader internal state
		}
	// the listbox owns the items in the list and will free them
	iListBox->Model()->SetOwnershipType( ELbmOwnsItemArray );
	
	// setup the icon array so graphics-style boxes work
	SetupListBoxIconsL();
	
	
	// add list items
	
	iListBox->SetFocus( ETrue );
	iFocusControl = iListBox;
	
	}
// ]]] end generated function

/** 
 * Handle global resource changes, such as scalable UI or skin events (override)
 */
void CExerciseListBox::HandleResourceChange( TInt aType )
	{
	CCoeControl::HandleResourceChange( aType );
	SetRect( iAvkonViewAppUi->View( TUid::Uid( EExerciseListBoxViewId ) )->ClientRect() );
	// [[[ begin generated region: do not modify [Generated Contents]
	// ]]] end generated region [Generated Contents]
	
	}
				
/**
 *	Draw container contents.
 */				
void CExerciseListBox::Draw( const TRect& aRect ) const
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	CWindowGc& gc = SystemGc();
	gc.Clear( aRect );
	
	// ]]] end generated region [Generated Contents]
	
	}
				
// [[[ begin generated function: do not modify
/**
 *	Add a list box item to a list.
 */
void CExerciseListBox::AddListBoxItemL( 
		CEikTextListBox* aListBox,
		const TDesC& aString )
	{
	CTextListBoxModel* model = aListBox->Model();
	CDesCArray* itemArray = static_cast< CDesCArray* > ( model->ItemTextArray() );
	itemArray->AppendL( aString );
	aListBox->HandleItemAdditionL();
	}

// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 * Get the array of selected item indices, with respect to the list model.
 * The array is sorted in ascending order.
 * The array should be destroyed with two calls to CleanupStack::PopAndDestroy(),
 * the first with no argument (referring to the internal resource) and the
 * second with the array pointer.
 * @return newly allocated array, which is left on the cleanup stack;
 *	or NULL for empty list. 
 */
RArray< TInt >* CExerciseListBox::GetSelectedListBoxItemsLC( CEikTextListBox* aListBox )
	{
	CAknFilteredTextListBoxModel* model = 
		static_cast< CAknFilteredTextListBoxModel *> ( aListBox->Model() );
	if ( model->NumberOfItems() == 0 )
		return NULL;
		
	// get currently selected indices
	const CListBoxView::CSelectionIndexArray* selectionIndexes =
		aListBox->SelectionIndexes();
	TInt selectedIndexesCount = selectionIndexes->Count();
	if ( selectedIndexesCount == 0 )
		return NULL;
		
	// copy the indices and sort numerically
	RArray<TInt>* orderedSelectedIndices = 
		new (ELeave) RArray< TInt >( selectedIndexesCount );
	
	// push the allocated array
	CleanupStack::PushL( orderedSelectedIndices );
	
	// dispose the array resource
	CleanupClosePushL( *orderedSelectedIndices );
	
	// see if the search field is enabled
	CAknListBoxFilterItems* filter = model->Filter();
	if ( filter != NULL )
		{
		// when filtering enabled, translate indices back to underlying model
		for ( TInt idx = 0; idx < selectedIndexesCount; idx++ )
			{
			TInt filteredItem = ( *selectionIndexes ) [ idx ];
			TInt actualItem = filter->FilteredItemIndex ( filteredItem );
			orderedSelectedIndices->InsertInOrder( actualItem );
			}
		}
	else
		{
		// the selection indices refer directly to the model
		for ( TInt idx = 0; idx < selectedIndexesCount; idx++ )
			orderedSelectedIndices->InsertInOrder( ( *selectionIndexes ) [ idx ] );
		}	
		
	return orderedSelectedIndices;
	}

// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 * Delete the selected item or items from the list box.
 */
void CExerciseListBox::DeleteSelectedListBoxItemsL( CEikTextListBox* aListBox )
	{
	CAknFilteredTextListBoxModel* model = 
		static_cast< CAknFilteredTextListBoxModel *> ( aListBox->Model() );
	if ( model->NumberOfItems() == 0 )
		return;
	
	RArray< TInt >* orderedSelectedIndices = GetSelectedListBoxItemsLC( aListBox );		
	if ( !orderedSelectedIndices )
		return;
		
	// Delete selected items from bottom up so indices don't change on us
	CDesCArray* itemArray = static_cast< CDesCArray* > ( model->ItemTextArray() );
	TInt currentItem = 0;
	
	for ( TInt idx = orderedSelectedIndices->Count(); idx-- > 0; ) 
		{
		currentItem = ( *orderedSelectedIndices )[ idx ];
		itemArray->Delete ( currentItem );
		}
	
	// dispose the array resources
	CleanupStack::PopAndDestroy();
	
	// dispose the array pointer
	CleanupStack::PopAndDestroy( orderedSelectedIndices );
	
	// refresh listbox's cursor now that items are deleted
	AknListBoxUtils::HandleItemRemovalAndPositionHighlightL(
		aListBox, currentItem, ETrue );
	}

// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 *	Get the listbox.
 */
CAknSingleStyleListBox* CExerciseListBox::ListBox()
	{
	return iListBox;
	}

// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 *	Create a list box item with the given column values.
 */
void CExerciseListBox::CreateListBoxItemL( TDes& aBuffer, 
		const TDesC& aMainText )
	{
	_LIT ( KStringHeader, "\t%S" );
	
	aBuffer.Format( KStringHeader(), &aMainText );
	} 
				
// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 *  *	Add an item to the list by reading the text items from the array resource
 *	and setting a single image property (if available) from an index
 *	in the list box's icon array.
 *	@param aResourceId id of an ARRAY resource containing the textual
 *	items in the columns
 *	
 */
void CExerciseListBox::AddListBoxResourceArrayItemL( TInt aResourceId )
	{
	CDesCArray* array = iCoeEnv->ReadDesCArrayResourceL( aResourceId );
	CleanupStack::PushL( array );
	// This is intended to be large enough, but if you get 
	// a USER 11 panic, consider reducing string sizes.
	TBuf<512> listString; 
	CreateListBoxItemL( listString, ( *array ) [ 0 ] );
	AddListBoxItemL( iListBox, listString );
	CleanupStack::PopAndDestroy( array );
	} 
				
// ]]] end generated function

// [[[ begin generated function: do not modify
/**
 *	Set up the list's icon array.
 */
void CExerciseListBox::SetupListBoxIconsL()
	{
	CArrayPtr< CGulIcon >* icons = NULL;		
	
	if ( icons != NULL )
		{
		iListBox->ItemDrawer()->ColumnData()->SetIconArray( icons );
		}
	}

// ]]] end generated function

// [[[ begin generated function: do not modify
/** 
 *	Handle commands relating to markable lists.
 */
TBool CExerciseListBox::HandleMarkableListCommandL( TInt aCommand )
	{
	return EFalse;
	}
void CExerciseListBox::RunAddListItemL(TBuf<100>& aName)//add item
	{
	_LIT(nothing,"");
	if(aName!=nothing)
		{
	       CTextListBoxModel* model=iListBox->Model();
	       CDesCArray* listBoxItems=STATIC_CAST(CDesCArray*,model->ItemTextArray());
	       TBuf<32>item; 
	       item.Format(_L("%d\t%S "),0,&aName);
	       listBoxItems->AppendL(item);
	       iListBox->HandleItemAdditionL();
	       iListBox->SetCurrentItemIndexAndDraw(listBoxItems->Count()-1);
	       iListBox->ActivateL();	
		}
	}
void CExerciseListBox::RunDeleteItemL()//delete item
	{
	if(iListBox)
		{
		CTextListBoxModel* model=iListBox->Model();          //获取列表模型 
		if(model->NumberOfItems()>0)                         //列表非空
			{
			CDesCArray* listBoxItems=STATIC_CAST(CDesCArray*,model->ItemTextArray()); //列表项
			TInt currentItem=iListBox->CurrentItemIndex();                            //当前项下标
			listBoxItems->Delete(currentItem);
			AknListBoxUtils::HandleItemRemovalAndPositionHighlightL(
					iListBox,currentItem,ETrue);
			iListBox->DrawNow(); 
			}
		}
	}
// ]]] end generated function