axmol/cocos2dx/support/component/CCComponentContainer.cpp

/****************************************************************************
Copyright (c) 2013 cocos2d-x.org

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#include "support/component/CCComponentContainer.h"
#include "support/component/CCComponent.h"
#include "CCDirector.h"

NS_CC_BEGIN

CCComponentContainer::CCComponentContainer(CCNode *pNode)
: m_pComponents(NULL)
, m_pOwner(pNode)
{
}

CCComponentContainer::~CCComponentContainer(void)
{
    CC_SAFE_RELEASE(m_pComponents);
}

CCComponent* CCComponentContainer::get(const char *pName) const
{
    CCComponent* pRet = NULL;
    CCAssert(pName != NULL, "Argument must be non-nil");
    do {
        CC_BREAK_IF(NULL == pName);
        CC_BREAK_IF(NULL == m_pComponents);
        pRet = dynamic_cast<CCComponent*>(m_pComponents->objectForKey(pName));
        
    } while (0);
    return pRet;
}

bool CCComponentContainer::add(CCComponent *pCom)
{
    bool bRet = false;
    CCAssert(pCom != NULL, "Argument must be non-nil");
    CCAssert(pCom->getOwner() == NULL, "Component already added. It can't be added again");
    do
    {
        if (m_pComponents == NULL)
        {
            m_pComponents = CCDictionary::create();
            m_pComponents->retain();
            m_pOwner->scheduleUpdate();
        }
        CCComponent *pComponent = dynamic_cast<CCComponent*>(m_pComponents->objectForKey(pCom->getName()));
        
        CCAssert(pComponent == NULL, "Component already added. It can't be added again");
        CC_BREAK_IF(pComponent);
        pCom->setOwner(m_pOwner);
        m_pComponents->setObject(pCom, pCom->getName());
        pCom->onEnter();
        bRet = true;
    } while(0);
    return bRet;
}

bool CCComponentContainer::remove(const char *pName)
{
    bool bRet = false;
    CCAssert(pName != NULL, "Argument must be non-nil");
    do 
    {        
        CC_BREAK_IF(!m_pComponents);
        CCObject* pRetObject = NULL;
        CCDictElement *pElement = NULL;
        HASH_FIND_PTR(m_pComponents->m_pElements, pName, pElement);
        if (pElement != NULL)
        {
           pRetObject = pElement->getObject();
        }
        CCComponent *com = dynamic_cast<CCComponent*>(pRetObject);
        CC_BREAK_IF(!com);
        com->onExit();
        com->setOwner(NULL);
        HASH_DEL(m_pComponents->m_pElements, pElement);
        pElement->getObject()->release();
        CC_SAFE_DELETE(pElement);
        bRet = true;
    } while(0);
    return bRet;
 }

void CCComponentContainer::removeAll()
{
    if (m_pComponents != NULL)
    {
        CCDictElement *pElement, *tmp;
        HASH_ITER(hh, m_pComponents->m_pElements, pElement, tmp)
        {
            HASH_DEL(m_pComponents->m_pElements, pElement);
            ((CCComponent*)pElement->getObject())->onExit();
            ((CCComponent*)pElement->getObject())->setOwner(NULL);
            pElement->getObject()->release();
            CC_SAFE_DELETE(pElement);
        }
        m_pOwner->unscheduleUpdate();
    }
}

void CCComponentContainer::alloc(void)
{
    m_pComponents = CCDictionary::create();
    m_pComponents->retain();
}

void CCComponentContainer::visit(float fDelta)
{
    if (m_pComponents != NULL)
    {
        CCDictElement *pElement, *tmp;
        HASH_ITER(hh, m_pComponents->m_pElements, pElement, tmp)
        {
            ((CCComponent*)pElement->getObject())->update(fDelta);
        }
    }
}

bool CCComponentContainer::isEmpty() const
{
    return (bool)(!(m_pComponents && m_pComponents->count()));
}

NS_CC_END