juce_AudioProcessorParameterGroup.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class AudioProcessorParameterGroup
{
public:
    //==============================================================================
    class AudioProcessorParameterNode
    {
    public:
        //==============================================================================
        AudioProcessorParameterNode (AudioProcessorParameterNode&&);
        ~AudioProcessorParameterNode();
 
        AudioProcessorParameterGroup* getParent() const;
 
        AudioProcessorParameter* getParameter() const;
 
        AudioProcessorParameterGroup* getGroup() const;
 
    private:
        //==============================================================================
        AudioProcessorParameterNode (std::unique_ptr<AudioProcessorParameter>, AudioProcessorParameterGroup*);
        AudioProcessorParameterNode (std::unique_ptr<AudioProcessorParameterGroup>, AudioProcessorParameterGroup*);
 
        std::unique_ptr<AudioProcessorParameterGroup> group;
        std::unique_ptr<AudioProcessorParameter> parameter;
        AudioProcessorParameterGroup* parent = nullptr;
 
        friend class AudioProcessorParameterGroup;
 
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioProcessorParameterNode)
    };
 
    //==============================================================================
    AudioProcessorParameterGroup();
 
    AudioProcessorParameterGroup (String groupID, String groupName, String subgroupSeparator);
 
    template <typename ParameterOrGroup>
    AudioProcessorParameterGroup (String groupID, String groupName, String subgroupSeparator,
                                  std::unique_ptr<ParameterOrGroup> child)
        : AudioProcessorParameterGroup (groupID, groupName, subgroupSeparator)
    {
        addChild (std::move (child));
    }
 
    template <typename ParameterOrGroup, typename... Args>
    AudioProcessorParameterGroup (String groupID, String groupName, String subgroupSeparator,
                                  std::unique_ptr<ParameterOrGroup> firstChild, Args&&... remainingChildren)
        : AudioProcessorParameterGroup (groupID, groupName, subgroupSeparator, std::move (firstChild))
    {
        addChild (std::forward<Args> (remainingChildren)...);
    }
 
    AudioProcessorParameterGroup (AudioProcessorParameterGroup&&);
 
    AudioProcessorParameterGroup& operator= (AudioProcessorParameterGroup&&);
 
    ~AudioProcessorParameterGroup();
 
    //==============================================================================
    String getID() const;
 
    String getName() const;
 
    String getSeparator() const;
 
    const AudioProcessorParameterGroup* getParent() const noexcept;
 
    //==============================================================================
    void setName (String newName);
 
    //==============================================================================
    const AudioProcessorParameterNode* const* begin() const noexcept;
    const AudioProcessorParameterNode* const* end()   const noexcept;
 
    //==============================================================================
    Array<const AudioProcessorParameterGroup*> getSubgroups (bool recursive) const;
 
    Array<AudioProcessorParameter*> getParameters (bool recursive) const;
 
    Array<const AudioProcessorParameterGroup*> getGroupsForParameter (AudioProcessorParameter*) const;
 
    //==============================================================================
    template <typename ParameterOrGroup>
    void addChild (std::unique_ptr<ParameterOrGroup> child)
    {
        // If you hit a compiler error here then you are attempting to add a
        // child that is neither a pointer to an AudioProcessorParameterGroup
        // nor a pointer to an AudioProcessorParameter.
        append (std::move (child));
    }
 
    template <typename ParameterOrGroup, typename... Args>
    void addChild (std::unique_ptr<ParameterOrGroup> firstChild, Args&&... remainingChildren)
    {
        addChild (std::move (firstChild));
        addChild (std::forward<Args> (remainingChildren)...);
    }
 
   #ifndef DOXYGEN
    [[deprecated ("This class now has a move operator, so if you're trying to move them around, you "
                 "should use that, or if you really need to swap two groups, just call std::swap. "
                 "However, remember that swapping a group that's already owned by an AudioProcessor "
                 "will most likely crash the host, so don't do that.")]]
    void swapWith (AudioProcessorParameterGroup& other)  { std::swap (*this, other); }
   #endif
 
private:
    //==============================================================================
    void getSubgroups (Array<const AudioProcessorParameterGroup*>&, bool recursive) const;
    void getParameters (Array<AudioProcessorParameter*>&, bool recursive) const;
    const AudioProcessorParameterGroup* getGroupForParameter (AudioProcessorParameter*) const;
    void updateChildParentage();
    void append (std::unique_ptr<AudioProcessorParameter>);
    void append (std::unique_ptr<AudioProcessorParameterGroup>);
 
    //==============================================================================
    String identifier, name, separator;
    OwnedArray<AudioProcessorParameterNode> children;
    AudioProcessorParameterGroup* parent = nullptr;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioProcessorParameterGroup)
};
 
} // namespace juce