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

ComponentContainer::ComponentContainer(Node *pNode)
: _components(NULL)
, _owner(pNode)
{
}

ComponentContainer::~ComponentContainer(void)
{
    CC_SAFE_RELEASE(_components);
}

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

bool ComponentContainer::add(Component *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 (_components == NULL)
        {
            _components = Dictionary::create();
            _components->retain();
            _owner->scheduleUpdate();
        }
        Component *pComponent = dynamic_cast<Component*>(_components->objectForKey(pCom->getName()));
        
        CCASSERT(pComponent == NULL, "Component already added. It can't be added again");
        CC_BREAK_IF(pComponent);
        pCom->setOwner(_owner);
        _components->setObject(pCom, pCom->getName());
        pCom->onEnter();
        bRet = true;
    } while(0);
    return bRet;
}

bool ComponentContainer::remove(const char *pName)
{
    bool bRet = false;
    CCASSERT(pName != NULL, "Argument must be non-nil");
    do 
    {        
        CC_BREAK_IF(!_components);
        Object* pRetObject = NULL;
        DictElement *pElement = NULL;
        HASH_FIND_PTR(_components->_elements, pName, pElement);
        if (pElement != NULL)
        {
           pRetObject = pElement->getObject();
        }
        Component *com = dynamic_cast<Component*>(pRetObject);
        CC_BREAK_IF(!com);
        com->onExit();
        com->setOwner(NULL);
        HASH_DEL(_components->_elements, pElement);
        pElement->getObject()->release();
        CC_SAFE_DELETE(pElement);
        bRet = true;
    } while(0);
    return bRet;
 }

void ComponentContainer::removeAll()
{
    if (_components != NULL)
    {
        DictElement *pElement, *tmp;
        HASH_ITER(hh, _components->_elements, pElement, tmp)
        {
            HASH_DEL(_components->_elements, pElement);
            ((Component*)pElement->getObject())->onExit();
            ((Component*)pElement->getObject())->setOwner(NULL);
            pElement->getObject()->release();
            CC_SAFE_DELETE(pElement);
        }
        _owner->unscheduleUpdate();
    }
}

void ComponentContainer::alloc(void)
{
    _components = Dictionary::create();
    _components->retain();
}

void ComponentContainer::visit(float fDelta)
{
    if (_components != NULL)
    {
        DictElement *pElement, *tmp;
        HASH_ITER(hh, _components->_elements, pElement, tmp)
        {
            ((Component*)pElement->getObject())->update(fDelta);
        }
    }
}

bool ComponentContainer::isEmpty() const
{
    return (bool)(!(_components && _components->count()));
}

NS_CC_END