xref: /external/parameter-framework/upstream/parameter/InstanceConfigurableElement.cpp

/*
 * Copyright (c) 2011-2014, Intel Corporation
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 * list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
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 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
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#include "InstanceConfigurableElement.h"
#include "Mapper.h"
#include "SyncerSet.h"
#include "Syncer.h"
#include "TypeElement.h"
#include "ParameterAccessContext.h"
#include <assert.h>

#define base CConfigurableElement

CInstanceConfigurableElement::CInstanceConfigurableElement(const std::string &strName,
                                                           const CTypeElement *pTypeElement)
    : base(strName), _pTypeElement(pTypeElement)
{
}

std::string CInstanceConfigurableElement::getKind() const
{
    // Delegate
    return _pTypeElement->getKind();
}

std::string CInstanceConfigurableElement::getXmlElementName() const
{
    // Delegate
    return _pTypeElement->getXmlElementName();
}

// Type element
const CTypeElement *CInstanceConfigurableElement::getTypeElement() const
{
    return _pTypeElement;
}

// Mapping
bool CInstanceConfigurableElement::getMappingData(const std::string &strKey,
                                                  const std::string *&pStrValue) const
{
    // Delegate
    return getTypeElement()->getMappingData(strKey, pStrValue);
}

// Returns the formatted mapping
std::string CInstanceConfigurableElement::getFormattedMapping() const
{
    // Delegate
    return getTypeElement()->getFormattedMapping();
}

bool CInstanceConfigurableElement::map(IMapper &mapper, std::string &strError)
{
    bool bHasMappingData = getTypeElement()->hasMappingData();
    bool bKeepDiving = true;

    // Begin
    if (bHasMappingData && !mapper.mapBegin(this, bKeepDiving, strError)) {

        return false;
    }

    // Go on through children?
    if (bKeepDiving) {

        // Map children
        size_t uiNbChildren = getNbChildren();
        size_t uiChild;

        for (uiChild = 0; uiChild < uiNbChildren; uiChild++) {

            CInstanceConfigurableElement *pInstanceConfigurableChildElement =
                static_cast<CInstanceConfigurableElement *>(getChild(uiChild));

            if (!pInstanceConfigurableChildElement->map(mapper, strError)) {

                return false;
            }
        }
    }

    // End
    if (bHasMappingData) {

        mapper.mapEnd();
    }
    return true;
}

// Element properties
void CInstanceConfigurableElement::showProperties(std::string &strResult) const
{
    base::showProperties(strResult);

    // Delegate to type element
    _pTypeElement->showProperties(strResult);
}

// Scalar or Array?
bool CInstanceConfigurableElement::isScalar() const
{
    return _pTypeElement->isScalar();
}

// Array Length
size_t CInstanceConfigurableElement::getArrayLength() const
{
    return _pTypeElement->getArrayLength();
}

// Sync to HW
void CInstanceConfigurableElement::setSyncer(ISyncer *pSyncer)
{
    assert(!_pSyncer);

    _pSyncer = pSyncer;
}

void CInstanceConfigurableElement::unsetSyncer()
{
    _pSyncer = NULL;
}

// Syncer
ISyncer *CInstanceConfigurableElement::getSyncer() const
{
    if (_pSyncer) {

        return _pSyncer;
    }
    // Check parent
    return base::getSyncer();
}

// Syncer set (descendant)
void CInstanceConfigurableElement::fillSyncerSetFromDescendant(CSyncerSet &syncerSet) const
{
    if (_pSyncer) {

        syncerSet += _pSyncer;
    } else {
        // Continue digging
        base::fillSyncerSetFromDescendant(syncerSet);
    }
}

bool CInstanceConfigurableElement::sync(CParameterAccessContext &parameterAccessContext) const
{
    if (!parameterAccessContext.getAutoSync()) {

        // AutoSync is disabled, do not perform the sync.
        // This is not an error, but the expected behavior so return true anyway.
        return true;
    }
    ISyncer *pSyncer = getSyncer();

    if (!pSyncer) {

        parameterAccessContext.setError("Unable to synchronize modification. No Syncer object "
                                        "associated to configurable element:");

        return false;
    }
    std::string strError;

    if (!pSyncer->sync(*parameterAccessContext.getParameterBlackboard(), false, strError)) {

        parameterAccessContext.setError(strError);

        return false;
    }
    return true;
}

// Check parameter access path well formed for leaf elements
bool CInstanceConfigurableElement::checkPathExhausted(CPathNavigator &pathNavigator,
                                                      utility::ErrorContext &errorContext)
{
    std::string *pStrChildName = pathNavigator.next();

    if (pStrChildName) {

        // Should be leaf element
        errorContext.setError("Path not found: " + pathNavigator.getCurrentPath());

        return false;
    }
    return true;
}

void CInstanceConfigurableElement::structureToXml(CXmlElement &xmlElement,
                                                  CXmlSerializingContext &serializingContext) const
{
    base::structureToXml(xmlElement, serializingContext);
    // Since Description belongs to the Type of Element, delegate it to the type element.
    getTypeElement()->setXmlDescriptionAttribute(xmlElement);
}