Component.h

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#pragma once
 
#include <string>
 
class Component
{
public:
    Component();
    virtual ~Component();
 
    virtual bool addChild(Component*);
 
    virtual bool removeChild(Component*);
 
    virtual void removeAllChildren()
    {
    }
 
    virtual unsigned int nbChildren() const { return 0; }
 
    virtual bool findChildComponent(Component* /* component */, bool /* recursive */) { return false; }
    virtual Component* getChild(unsigned int /* index */) { return nullptr; }
    virtual const Component* getChild(unsigned int /* index */) const { return nullptr; }
 
    void setParentComponent(Component*);
 
    virtual void onParentSet(Component*);
 
    const Component* parent() const { return m_p_parent; }
 
    Component* parent() { return m_p_parent; }
 
    template <class DataType>
    const DataType* firstParentOfType();
 
    void ref();
 
    void unref();
 
    // Name management
    void setName(const std::string& name);
    std::string name() const;
    virtual void onNameChanged();
 
    // misc
    void print(int l_depth = 0);
    // overlaod in inheritted classes to perform specific stuff at display time
    virtual void doPrint();
 
    // copy
    void copy(const Component& component, bool /* recursive*/);
 
private:
    Component* m_p_parent;
 
    unsigned int m_refCounter;
 
    std::string m_name;
};
 
template <class DataType>
const DataType* Component::firstParentOfType()
{
    if (parent() != nullptr)
    {
        DataType* l_p_parent = dynamic_cast<DataType*>(parent());
        if (l_p_parent != nullptr)
            return l_p_parent;
        else
            return parent()->firstParentOfType<DataType>();
    }
    return nullptr;
}