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#include "qmlbackendmonitorinfo_s60_p.h"

QTM_BEGIN_NAMESPACE

//singleton class object
CBackendMonitorInfo* CBackendMonitorInfo::iBackendMonitorInfo = NULL;

CBackendMonitorInfo* CBackendMonitorInfo::NewL()
{
    if (!iBackendMonitorInfo)
        iBackendMonitorInfo = new CBackendMonitorInfo;

    return iBackendMonitorInfo;
}

//returns the CMonitorTriggerInfo info based on the aTrigID
CMonitorTriggerInfo* CBackendMonitorInfo::getMonitorTriggerInfo(TLbtTriggerId aTrigID)
{
    CMonitorTriggerInfo* currentNode = iMonitorInfo;
    while (currentNode && (currentNode->iTriggerID != aTrigID)) {
        currentNode = currentNode->next;
    }
    return currentNode;
}

//returns the CMonitorTriggerInfo info based on the aParent,aType from the linked list
CMonitorTriggerInfo* CBackendMonitorInfo::getMonitorTriggerInfo(QGeoAreaMonitorS60* aParent, enTriggerType aType)
{
    CMonitorTriggerInfo* currentNode = iMonitorInfo;
    while (currentNode) {
        if ((currentNode->iParent == aParent) && (currentNode->iType == aType))
            break;

        currentNode = currentNode->next;
    }
    return currentNode;
}

//creates and adds a new CMonitorTriggerInfo object to the end of linked list
bool CBackendMonitorInfo::addMonitorTriggerInfo(QGeoAreaMonitorS60* aParent, TLbtTriggerId aTriggerID, enTriggerType aType)
{
    CMonitorTriggerInfo* currentNode = NULL;

    CMonitorTriggerInfo* temp = new CMonitorTriggerInfo;

    if (!temp) {
        return FALSE;
    }

    temp->iTriggerID = aTriggerID;
    temp->iParent = aParent;
    temp->iType = aType;
    temp->next = NULL;

    currentNode = iMonitorInfo;

    while (currentNode && (currentNode->next != NULL))
        currentNode = currentNode->next;

    if (!currentNode) {
        iMonitorInfo = temp;
    } else {
        currentNode->next = temp;
    }

    return TRUE;
}

//deletes the node corresponding to aTrigID
void CBackendMonitorInfo::removeMonitorTriggerInfo(TLbtTriggerId aTrigID)
{
    CMonitorTriggerInfo* currentNode = NULL;

    CMonitorTriggerInfo* prevNode = NULL;

    currentNode = prevNode = iMonitorInfo;

    while (currentNode && (currentNode->iTriggerID != aTrigID)) {
        prevNode = currentNode;
        currentNode = currentNode->next;
    }

    if (currentNode == NULL)
        return;

    else if (currentNode == iMonitorInfo) {
        iMonitorInfo = currentNode->next;
    }

    else {
        prevNode->next = currentNode->next;
    }

    delete currentNode;
}

//deletes all the nodes in the linked list
CBackendMonitorInfo::~CBackendMonitorInfo()
{
    CMonitorTriggerInfo* currentNode = NULL;
    CMonitorTriggerInfo* prevNode = NULL;

    prevNode = iMonitorInfo;

    while (prevNode) {
        currentNode = prevNode;
        prevNode = prevNode->next;
        delete currentNode;
    }

    iMonitorInfo = NULL;
    iBackendMonitorInfo = NULL;
}

QTM_END_NAMESPACE