India/cocos2d-x/cocos/2d/CCComponentContainer.cpp

/****************************************************************************
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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#include "2d/CCComponentContainer.h"
#include "2d/CCComponent.h"
#include "2d/CCNode.h"

NS_CC_BEGIN

ComponentContainer::ComponentContainer(Node* node)
: _owner(node)
{
}

ComponentContainer::~ComponentContainer()
{  
}

Component* ComponentContainer::get(const std::string& name) const
{
    Component* ret = nullptr;

    auto it = _componentMap.find(name);
    if (it != _componentMap.end())
    {
        ret = it->second;
    }

    return ret;
}

bool ComponentContainer::add(Component *com)
{
    bool ret = false;
    CCASSERT(com != nullptr, "Component must be non-nil");
    CCASSERT(com->getOwner() == nullptr, "Component already added. It can't be added again");
    do
    {
        auto componentName = com->getName();

        if (_componentMap.find(componentName) != _componentMap.end())
        {
            CCASSERT(false, "ComponentContainer already have this kind of component");
            break;
        }
        _componentMap[componentName] = com;
        com->retain();
        com->setOwner(_owner);
        com->onAdd();

        ret = true;
    } while(0);
    return ret;
}

bool ComponentContainer::remove(const std::string& componentName)
{
    bool ret = false;
    do 
    {        
        auto iter = _componentMap.find(componentName);
        CC_BREAK_IF(iter == _componentMap.end());

        auto component = iter->second;
        _componentMap.erase(componentName);

        component->onRemove();
        component->setOwner(nullptr);
        component->release();

        ret = true;
    } while(0);

    return ret;
 }

bool ComponentContainer::remove(Component *com)
{
    return remove(com->getName());
}

void ComponentContainer::removeAll()
{
    if (!_componentMap.empty())
    {
        for (auto& iter : _componentMap)
        {
            iter.second->onRemove();
            iter.second->setOwner(nullptr);
            iter.second->release();
        }
        
        _componentMap.clear();
        _owner->unscheduleUpdate();
    }
}

void ComponentContainer::visit(float delta)
{
    if (!_componentMap.empty())
    {
        CC_SAFE_RETAIN(_owner);
        for (auto& iter : _componentMap)
        {
            iter.second->update(delta);
        }
        CC_SAFE_RELEASE(_owner);
    }
}

void ComponentContainer::onEnter()
{
    for (auto& iter : _componentMap)
    {
        iter.second->onEnter();
    }
}

void ComponentContainer::onExit()
{
    for (auto& iter : _componentMap)
    {
        iter.second->onExit();
    }
}

NS_CC_END