searchresults.cpp

使用yahoo图片搜索功能在手机上的以应用

/*
========================================================================
 Name		: SearchResults.cpp
 Author	  : 
 Copyright   : Copyright 2006 Nokia Corporation
 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 <Yahoo.rsg>
#include <Yahoo_mbm.mbg>
// ]]] end generated region [Generated System Includes]

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

#include "SearchResultsView.h"

// [[[ begin generated region: do not modify [Generated Constants]
_LIT( KYahoo_mbmFile, "\\resource\\apps\\Yahoo_mbm.mbm" );
// ]]] end generated region [Generated Constants]

/**
 * First phase of Symbian two-phase construction. Should not 
 * contain any code that could leave.
 */
CSearchResults::CSearchResults()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	iListBox = NULL;
	// ]]] end generated region [Generated Contents]
	
	}
/** 
 * Destroy child controls.
 */
CSearchResults::~CSearchResults()
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	delete iListBox;
	iListBoxEventDispatch.Close();		
	// ]]] 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 CSearchResults
 */
CSearchResults* CSearchResults::NewL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CSearchResults* self = CSearchResults::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 CSearchResults
 */
CSearchResults* CSearchResults::NewLC( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	CSearchResults* self = new (ELeave) CSearchResults();
	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 CSearchResults::ConstructL( 
		const TRect& aRect, 
		const CCoeControl* aParent, 
		MEikCommandObserver* aCommandObserver )
	{
	if ( !aParent )
		{
		CreateWindowL();
		}
	else
		{
		SetContainerWindowL( *aParent );
		}
	iFocusControl = NULL;
	iCommandObserver = aCommandObserver;
	InitializeControlsL();
	
	HBufC *prompt = StringLoader::LoadLC(R_SEARCH_LIST_EMPTY_PROMPT);
	iListBox->View()->SetListEmptyTextL(*prompt);
	CleanupStack::PopAndDestroy(prompt);
	
	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 CSearchResults::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* CSearchResults::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 CSearchResults::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 CSearchResults::LayoutControls()
	{
	iListBox->SetExtent( TPoint( 0, 0 ), iListBox->MinimumSize() );
	}
// ]]] end generated function

/**
 *	Handle key events.
 */				
TKeyResponse CSearchResults::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 &&
			iFocusControl->OfferKeyEventL( aKeyEvent, aType ) == EKeyWasConsumed )
		return EKeyWasConsumed;
	return CCoeControl::OfferKeyEventL( aKeyEvent, aType );
	}
				
// [[[ begin generated function: do not modify
/**
 *	Initialize each control upon creation.
 */				
void CSearchResults::InitializeControlsL()
	{
	iListBox = new (ELeave) CAknDoubleStyleListBox;
	iListBox->SetContainerWindowL( *this );
		{
		TResourceReader reader;
		iEikonEnv->CreateResourceReaderLC( reader, R_SEARCH_RESULTS_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();
	
	iListBox->SetListBoxObserver( this );
	AddListBoxEventHandlerL( iListBox, EEventEnterKeyPressed, &CSearchResults::HandleListBoxEnterKeyPressedL );
	
	// add list items
	
	iListBox->SetFocus( ETrue );
	iFocusControl = iListBox;
	
	}
// ]]] end generated function

/** 
 * Handle global resource changes, such as scalable UI or skin events (override)
 */
void CSearchResults::HandleResourceChange( TInt aType )
	{
	CCoeControl::HandleResourceChange( aType );
	SetRect( iAvkonViewAppUi->View( TUid::Uid( ESearchResultsViewId ) )->ClientRect() );
	// [[[ begin generated region: do not modify [Generated Contents]
	// ]]] end generated region [Generated Contents]
	
	}
				
/**
 *	Draw container contents.
 */				
void CSearchResults::Draw( const TRect& aRect ) const
	{
	// [[[ begin generated region: do not modify [Generated Contents]
	CWindowGc& gc = SystemGc();
	gc.Clear( aRect );
	
	// ]]] end generated region [Generated Contents]
	
	}
				
/**
 *	Add a list box item to a list.