axmol/cocos/2d/CCComponentContainer.cpp

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

http://www.cocos2d-x.org

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****************************************************************************/


#include "CCComponentContainer.h"
#include "CCComponent.h"
#include "CCDirector.h"

NS_CC_BEGIN

ComponentContainer::ComponentContainer(Node *node)
: _components(nullptr)
, _owner(node)
{
}

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

Component* ComponentContainer::get(const std::string& name) const
{
    Component* ret = nullptr;
    do {
        CC_BREAK_IF(nullptr == _components);
        ret = _components->at(name);
        
    } while (0);
    return ret;
}

bool ComponentContainer::add(Component *com)
{
    bool ret = false;
    CCASSERT(com != nullptr, "Argument must be non-nil");
    CCASSERT(com->getOwner() == nullptr, "Component already added. It can't be added again");
    do
    {
        if (_components == nullptr)
        {
            _components = new Map<std::string, Component*>();
            _owner->scheduleUpdate();
        }
        Component *component = _components->at(com->getName());
        
        CCASSERT(component == nullptr, "Component already added. It can't be added again");
        CC_BREAK_IF(component);
        com->setOwner(_owner);
        _components->insert(com->getName(), com);
        com->onEnter();
        ret = true;
    } while(0);
    return ret;
}

bool ComponentContainer::remove(const std::string& name)
{
    bool ret = false;
    do 
    {        
        CC_BREAK_IF(!_components);
        
        auto iter = _components->find(name);
        CC_BREAK_IF(iter == _components->end());
        
        auto com = iter->second;
        com->onExit();
        com->setOwner(nullptr);
        
        _components->erase(iter);
        
        ret = true;
    } while(0);
    return ret;
 }

void ComponentContainer::removeAll()
{
    if (_components != nullptr)
    {
        for (auto iter = _components->begin(); iter != _components->end(); ++iter)
        {
            iter->second->onExit();
            iter->second->setOwner(nullptr);
        }
        
        _components->clear();
        CC_SAFE_DELETE(_components);
        
        _owner->unscheduleUpdate();
    }
}

void ComponentContainer::alloc(void)
{
    _components = new Map<std::string, Component*>();
}

void ComponentContainer::visit(float delta)
{
    if (_components != nullptr)
    {
        for (auto iter = _components->begin(); iter != _components->end(); ++iter)
        {
            iter->second->update(delta);
        }
    }
}

bool ComponentContainer::isEmpty() const
{
    return (_components == nullptr || _components->empty());
}

NS_CC_END