JUCE/extras/Projucer/Source/ComponentEditor/Properties/jucer_ComponentColourProperty.h

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

   This file is part of the JUCE framework.
   Copyright (c) Raw Material Software Limited

   JUCE is an open source framework subject to commercial or open source
   licensing.

   By downloading, installing, or using the JUCE framework, or combining the
   JUCE framework with any other source code, object code, content or any other
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   Or:

   You may also use this code under the terms of the AGPLv3:
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   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.

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

#pragma once

#include "jucer_ColourPropertyComponent.h"

//==============================================================================
template <class ComponentType>
class ComponentColourProperty  : public JucerColourPropertyComponent,
                                 private ChangeListener
{
public:
    ComponentColourProperty (const String& name,
                             ComponentType* comp,
                             JucerDocument& doc,
                             const bool canResetToDefault)
        : JucerColourPropertyComponent (name, canResetToDefault),
          component (comp),
          document (doc)
    {
        document.addChangeListener (this);
    }

    ~ComponentColourProperty() override
    {
        document.removeChangeListener (this);
    }

    void changeListenerCallback (ChangeBroadcaster*) override
    {
        refresh();
    }

protected:
    ComponentType* component;
    JucerDocument& document;
};


//==============================================================================
class ComponentColourIdProperty : public ComponentColourProperty <Component>
{
public:
    //==============================================================================
    ComponentColourIdProperty (Component* const comp,
                               JucerDocument& doc,
                               const int colourId_,
                               const String& name,
                               const bool canResetToDefault)
        : ComponentColourProperty <Component> (name, comp, doc, canResetToDefault),
          colourId (colourId_)
    {
    }

    //==============================================================================
    Colour getColour() const override
    {
        return component->findColour (colourId);
    }

    void setColour (Colour newColour) override
    {
        if (component->findColour (colourId) != newColour)
        {
            document.getUndoManager().undoCurrentTransactionOnly();

            document.perform (new ColourChangeAction (component,
                                                      *document.getComponentLayout(),
                                                      colourId,
                                                      newColour,
                                                      false),
                              "Change colour");
        }
    }

    void resetToDefault() override
    {
        document.getUndoManager().undoCurrentTransactionOnly();

        document.perform (new ColourChangeAction (component,
                                                  *document.getComponentLayout(),
                                                  colourId,
                                                  Colours::black,
                                                  true),
                          "Reset colour");
    }

private:
    const int colourId;

    class ColourChangeAction  : public ComponentUndoableAction <Component>
    {
    public:
        ColourChangeAction (Component* const comp,
                            ComponentLayout& l,
                            const int colourId_,
                            Colour newColour_,
                            const bool newColourIsDefault)
            : ComponentUndoableAction<Component> (comp, l),
              colourId (colourId_),
              newColour (newColour_),
              isDefault (newColourIsDefault)
        {
        }

        bool perform() override
        {
            showCorrectTab();

            wasSpecified = getComponent()->isColourSpecified (colourId);
            oldColour = getComponent()->findColour (colourId);

            if (isDefault)
                getComponent()->removeColour (colourId);
            else
                getComponent()->setColour (colourId, newColour);

            changed();
            return true;
        }

        bool undo() override
        {
            showCorrectTab();

            if (wasSpecified)
                getComponent()->setColour (colourId, oldColour);
            else
                getComponent()->removeColour (colourId);

            if (TextEditor* const te = dynamic_cast<TextEditor*> (getComponent()))
                te->applyFontToAllText (te->getFont());

            changed();
            return true;
        }

        int colourId;
        Colour newColour, oldColour;
        bool isDefault, wasSpecified;
    };
};