JUCE/extras/Projucer/Source/Utility/UI/PropertyComponents/jucer_PropertyComponentsWithEnablement.h

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

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2017 - ROLI Ltd.

   You may use this code under the terms of the GPL v3
   (see www.gnu.org/licenses).

   For this technical preview, this file is not subject to commercial licensing.

   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 TextPropertyComponentWithEnablement    : public TextPropertyComponent,
                                               private Value::Listener
{
public:
    TextPropertyComponentWithEnablement (ValueWithDefault& valueToControl,
                                         ValueWithDefault valueToListenTo,
                                         const String& propertyName,
                                         int maxNumChars,
                                         bool isMultiLine)
        : TextPropertyComponent (valueToControl, propertyName, maxNumChars, isMultiLine),
          valueWithDefault (valueToListenTo),
          value (valueWithDefault.getPropertyAsValue())
    {
        value.addListener (this);
        setEnabled (valueWithDefault.get());
    }

    ~TextPropertyComponentWithEnablement() override    { value.removeListener (this); }

private:
    ValueWithDefault valueWithDefault;
    Value value;

    void valueChanged (Value&) override       { setEnabled (valueWithDefault.get()); }
};

//==============================================================================
class ChoicePropertyComponentWithEnablement    : public ChoicePropertyComponent,
                                                 private Value::Listener
{
public:
    ChoicePropertyComponentWithEnablement (ValueWithDefault& valueToControl,
                                           ValueWithDefault valueToListenTo,
                                           const String& propertyName,
                                           const StringArray& choiceToUse,
                                           const Array<var>& correspondingValues)
        : ChoicePropertyComponent (valueToControl, propertyName, choiceToUse, correspondingValues),
          valueWithDefault (valueToListenTo),
          value (valueToListenTo.getPropertyAsValue())
    {
        value.addListener (this);
        valueChanged (value);
    }

    ChoicePropertyComponentWithEnablement (ValueWithDefault& valueToControl,
                                           ValueWithDefault valueToListenTo,
                                           const Identifier& multiChoiceID,
                                           const String& propertyName,
                                           const StringArray& choicesToUse,
                                           const Array<var>& correspondingValues)
        : ChoicePropertyComponentWithEnablement (valueToControl, valueToListenTo, propertyName, choicesToUse, correspondingValues)
    {
        jassert (valueToListenTo.get().getArray() != nullptr);

        isMultiChoice = true;
        idToCheck = multiChoiceID;

        valueChanged (value);
    }

    ChoicePropertyComponentWithEnablement (ValueWithDefault& valueToControl,
                                           ValueWithDefault valueToListenTo,
                                           const String& propertyName)
        : ChoicePropertyComponent (valueToControl, propertyName),
          valueWithDefault (valueToListenTo),
          value (valueToListenTo.getPropertyAsValue())
    {
        value.addListener (this);
        valueChanged (value);
    }

    ~ChoicePropertyComponentWithEnablement() override    { value.removeListener (this); }

private:
    ValueWithDefault valueWithDefault;
    Value value;

    bool isMultiChoice = false;
    Identifier idToCheck;

    bool checkMultiChoiceVar() const
    {
        jassert (isMultiChoice);

        auto v = valueWithDefault.get();

        if (auto* varArray = v.getArray())
            return varArray->contains (idToCheck.toString());

        jassertfalse;
        return false;
    }

    void valueChanged (Value&) override
    {
        if (isMultiChoice)
            setEnabled (checkMultiChoiceVar());
        else
            setEnabled (valueWithDefault.get());
    }
};

//==============================================================================
class MultiChoicePropertyComponentWithEnablement    : public MultiChoicePropertyComponent,
                                                      private Value::Listener
{
public:
    MultiChoicePropertyComponentWithEnablement (ValueWithDefault& valueToControl,
                                                ValueWithDefault valueToListenTo,
                                                const String& propertyName,
                                                const StringArray& choices,
                                                const Array<var>& correspondingValues)
        : MultiChoicePropertyComponent (valueToControl,
                                        propertyName,
                                        choices,
                                        correspondingValues),
          valueWithDefault (valueToListenTo),
          value (valueToListenTo.getPropertyAsValue())
    {
        value.addListener (this);
        valueChanged (value);
    }

    ~MultiChoicePropertyComponentWithEnablement() override    { value.removeListener (this); }

private:
    void valueChanged (Value&) override       { setEnabled (valueWithDefault.get()); }

    ValueWithDefault valueWithDefault;
    Value value;
};