Carla/source/modules/juce_data_structures/app_properties/juce_ApplicationProperties.cpp

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

   This file is part of the JUCE library.
   Copyright (c) 2013 - Raw Material Software Ltd.

   Permission is granted to use this software under the terms of either:
   a) the GPL v2 (or any later version)
   b) the Affero GPL v3

   Details of these licenses can be found at: www.gnu.org/licenses

   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

   ------------------------------------------------------------------------------

   To release a closed-source product which uses JUCE, commercial licenses are
   available: visit www.juce.com for more information.

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

ApplicationProperties::ApplicationProperties()
    : commonSettingsAreReadOnly (0)
{
}

ApplicationProperties::~ApplicationProperties()
{
    closeFiles();
}

//==============================================================================
void ApplicationProperties::setStorageParameters (const PropertiesFile::Options& newOptions)
{
    options = newOptions;
}

//==============================================================================
void ApplicationProperties::openFiles()
{
    // You need to call setStorageParameters() before trying to get hold of the properties!
    jassert (options.applicationName.isNotEmpty());

    if (options.applicationName.isNotEmpty())
    {
        PropertiesFile::Options o (options);

        if (userProps == nullptr)
        {
            o.commonToAllUsers = false;
            userProps = new PropertiesFile (o);
        }

        if (commonProps == nullptr)
        {
            o.commonToAllUsers = true;
            commonProps = new PropertiesFile (o);
        }

        userProps->setFallbackPropertySet (commonProps);
    }
}

PropertiesFile* ApplicationProperties::getUserSettings()
{
    if (userProps == nullptr)
        openFiles();

    return userProps;
}

PropertiesFile* ApplicationProperties::getCommonSettings (const bool returnUserPropsIfReadOnly)
{
    if (commonProps == nullptr)
        openFiles();

    if (returnUserPropsIfReadOnly)
    {
        if (commonSettingsAreReadOnly == 0)
            commonSettingsAreReadOnly = commonProps->save() ? -1 : 1;

        if (commonSettingsAreReadOnly > 0)
            return userProps;
    }

    return commonProps;
}

bool ApplicationProperties::saveIfNeeded()
{
    return (userProps == nullptr || userProps->saveIfNeeded())
         && (commonProps == nullptr || commonProps->saveIfNeeded());
}

void ApplicationProperties::closeFiles()
{
    userProps = nullptr;
    commonProps = nullptr;
}