ValueTreeAttachment.h

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namespace krotos
{
    class ValueTreeAttachment : public ValueTree::Listener
    {
      public:
        ValueTreeAttachment(const ValueTree& tree) : m_tree(tree) { m_tree.addListener(this); }
 
        ~ValueTreeAttachment() override { m_tree.removeListener(this); }
 
        std::function<void(ValueTree&, const Identifier&)> onPropertyChanged{nullptr};
        std::function<void(ValueTree&, ValueTree&)> onChildAdded{nullptr};
        std::function<void(ValueTree&, ValueTree&)> onChildRemoved{nullptr};
 
      private:
        void valueTreePropertyChanged(ValueTree& tree, const Identifier& property) override
        {
            if (onPropertyChanged)
                onPropertyChanged(tree, property);
        }
 
        void valueTreeChildAdded(ValueTree& parent, ValueTree& child) override
        {
            if (onChildAdded)
                onChildAdded(parent, child);
        }
 
        void valueTreeChildRemoved(ValueTree& parent, ValueTree& child, int) override
        {
            if (onChildRemoved)
                onChildRemoved(parent, child);
        }
 
        ValueTree m_tree;
 
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(ValueTreeAttachment)
    };
} // namespace krotos