halviewview.cpp

来自「最新官方例子,图形,描述副,基本控件,通讯协议,等等,」· C++ 代码 · 共 150 行

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

// INCLUDES

//  Class include
#include "HalViewView.h"

// System includes
#include <aknviewappui.h>	// CAknViewAppUi
#include <akntabgrp.h>		// CAknTabGroup
#include <HalView.rsg>

// User includes
#include "HalViewAppUi.h"
#include "HalViewContainer.h"
#include "HalView.hrh"	// THalViewViewNumber

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

CHalViewView::CHalViewView()
	{
	}

/** 
* Destructor.  Frees up memory for the container.
*/
CHalViewView::~CHalViewView()
	{
	DestroyContainer();
	}

/**
* Symbian OS 2 phase constructor.
* Constructs the CHalViewView using the constructor and ConstructL 
* method. the constructed object is popped from the CleanupStack before returning it.
* 
* @param aRect The rectangle for this window
* @return The newly constructed CHalViewView
*/
CHalViewView* CHalViewView::NewL()
	{
	CHalViewView* self = new (ELeave) CHalViewView();
	CleanupStack::PushL(self);
	self->ConstructL();
	CleanupStack::Pop(self);
	return self;
	}

/**
* Symbian OS 2nd phase constructor.  
* Uses the superclass constructor to construct the view using the 
* R_HALVIEW_VIEW resource.
*/ 
void CHalViewView::ConstructL()
	{
	BaseConstructL(R_HALVIEW_VIEW);
	}

void CHalViewView::DestroyContainer()
	{
	if (iContainer)
		{
		AppUi()->RemoveFromStack(iContainer);
		delete iContainer;
		iContainer = NULL;
		}
	}

/**
* Called by the framework
* @return The Uid for this view
*/
TUid CHalViewView::Id() const
	{
	return TUid::Uid(EHalViewViewId);
	}

/**
* Called by the container to allow the tab group to 
* process a key event
*/
TKeyResponse CHalViewView::OfferKeyToTabGroupL(const TKeyEvent& aKeyEvent, TEventCode aType)
	{
    CAknTabGroup* tabGroup = static_cast<CHalViewAppUi*>(AppUi())->TabGroup();

	if (tabGroup)
        {
        if (tabGroup->OfferKeyEventL(aKeyEvent, aType) == EKeyWasConsumed)
            {
            iContainer->DisplayAttributesByIdL(tabGroup->ActiveTabIndex());
            return EKeyWasConsumed;
            }
        }
	return EKeyWasNotConsumed;
	}

/**
* Called by the framework when the view is activated.  Constructs the 
* container if necessary, setting this view as its MOP parent, and 
* adding it to the control stack.
*/
void CHalViewView::DoActivateL(const TVwsViewId& /*aPrevViewId*/,
								   TUid /*aCustomMessageId*/,
								   const TDesC8& /*aCustomMessage*/)
	{
	if (!iContainer)
		{
		iContainer = CHalViewContainer::NewL(*this, ClientRect());
		iContainer->SetMopParent(this);
		AppUi()->AddToStackL(*this, iContainer);
		iContainer->DisplayAttributesByIdL(0);
		}
	}

/**
* Called by the framework when the view is deactivated.  
* Removes the container from the control stack and deletes it.
*/
void CHalViewView::DoDeactivate()
	{
	DestroyContainer();
	}

/**
* From CAknView, takes care of command handling for this view.
*
* @param aCommand command to be handled
*/
void CHalViewView::HandleCommandL(TInt aCommand)
	{
	switch (aCommand)
		{
		case EAknSoftkeyBack:
			AppUi()->HandleCommandL(EEikCmdExit);
			break;

		default:
			AppUi()->HandleCommandL(aCommand);
			break;
		}
	}

// End of File