JUCE/extras/Projucer/Source/ComponentEditor/paintelements/jucer_ElementSiblingComponent.h

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   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 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-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.

  ==============================================================================
*/

#pragma once


//==============================================================================
class ElementSiblingComponent  : public Component,
                                 public ChangeListener
{
public:
    ElementSiblingComponent (PaintElement* const owner_)
        : owner (owner_)
    {
        setAlwaysOnTop (true);

        owner->getDocument()->addChangeListener (this);
    }

    ~ElementSiblingComponent()
    {
        owner->getDocument()->removeChangeListener (this);
    }

    virtual void updatePosition() = 0;


protected:
    void changeListenerCallback (ChangeBroadcaster*)
    {
        updatePosition();
    }

    PaintElement* const owner;
};