appmgrmodel.cpp

程序代码使用说明： (1)所有源代码目录下都提供了Makefile（非Qt）

#include "AppMgrModel.h"

#include <QPoint>
#include <QImage>
#include <QStringList>
#include <QSettings>    
#include <QApplication>
#include <QFont>

const int AppMgrModel::COL_NUM = 3;
const QString AppMgrModel::iniFileName = "./data/app_data.ini";

struct AppNode
{
    AppNode() : type(-1), name(NULL), value(NULL) {};
    int type;
    QString name;
    QString value;
};

AppMgrModel::AppMgrModel(const QString& children, QObject* parent)
    : QAbstractTableModel(parent), mChildren(children)
{
    loadChildNodes();
    nodesCount = mNodeList.size();
    qDebug("nodes count: %d", nodesCount);
}

AppMgrModel::~AppMgrModel()
{
    clearNodes();
}

QVariant AppMgrModel::data(const QModelIndex &index, int role) const
{
    int nodeIndex =  index.row() * columnCount() + index.column();
    
    if (nodeIndex >= nodesCount)
        return QVariant();
    
    switch(role) 
    {
        default:
        case Qt::DisplayRole:
            return mNodeList.at(nodeIndex)->name;
        case Qt::BackgroundColorRole:
            return Qt::yellow;
        case Qt::FontRole:
            if (qApp) {
                QFont f = qApp->font();
                f.setPixelSize(12);
                f.setBold(true);
                return f;
            }
            break;   
        case Qt::UserRole:
            return mNodeList.at(nodeIndex)->type;
        case Qt::UserRole + 1:
            return mNodeList.at(nodeIndex)->value;
    }
    return QVariant();
}


void AppMgrModel::loadChildNodes()
{
    QSettings cfg(iniFileName, QSettings::IniFormat);
    if (mChildren == TOP_FOLDER_FLAG) 
    {
        mChildren = cfg.value("0/Value").toString(); 
    }
    qDebug("chilren nodes: %s", mChildren.toLatin1().constData());
    
    QStringList childrenIds = mChildren.split('*');
    
    clearNodes();
    int size = childrenIds.size();
    for (int i=0; i < size; i++)
    {
        cfg.beginGroup(childrenIds.at(i));
        qDebug("chilren node group: %s", childrenIds.at(i).toLatin1().constData());
        AppNode* node = new AppNode();
        node->type = cfg.value("Type").toInt();
        node->name = cfg.value("Name").toString();
        node->value = cfg.value("Value").toString();
        mNodeList.append(node);
        qDebug("chilren node appended. Type=%d, Name=%s, Value=%s", 
            node->type, node->name.toLatin1().constData(), node->value.toLatin1().constData());
        cfg.endGroup();
    }    
}

void AppMgrModel::clearNodes()
{
    if (!mNodeList.isEmpty())
    {
        int size = mNodeList.size();
        for (int i=0; i < size; i++)
        {
            if (mNodeList.at(i) != NULL)
                delete mNodeList.at(i);
        }

        mNodeList.clear();
    }
}