notesmanager.cpp Example File

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 #include <QtCore>

 #include "notesmanager.h"

 NotesManager::NotesManager(QObject *parent)
     : QObject(parent), m_search(QString())
 {
 }

 bool NotesManager::init()
 {
     QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
     db.setDatabaseName(QCoreApplication::applicationDirPath() + "/notesmanager.db");
     if (!db.open())
         db.setDatabaseName(QDir::homePath() + "/notesmanager.db");

     if (db.open()) {
         QSqlQuery create;
         create.exec("CREATE TABLE todolist(id INTEGER PRIMARY KEY, notes VARCHAR(255), date VARCHAR(255))");

         nextAlarm();

         QTimer *timer = new QTimer(this);
         QObject::connect(timer, SIGNAL(timeout()), this, SLOT(checkAlarm()));
         timer->start(1000);
     } else {
         return false;
     }

     return true;
 }

 void NotesManager::nextAlarm()
 {
     QSqlQuery alarmQuery("SELECT * FROM todolist WHERE date > DATETIME('now', 'localtime') ORDER BY date");
     if (alarmQuery.next()) {
         setAlarmTime(QDateTime::fromString(alarmQuery.value(2).toString(), "yyyy-MM-dd HH:mm:ss"));
         setAlarmMessage(alarmQuery.value(1).toString());
     }
 }

 void NotesManager::checkAlarm()
 {
     QString currStr = QDateTime::currentDateTime().toString(Qt::ISODate);
     QDateTime curr = QDateTime::fromString(currStr, Qt::ISODate);

     if (getAlarmTime() == curr)
         emit soundAlarm(getAlarmTime());

     nextAlarm();
 }

 QDateTime NotesManager::getAlarmTime() const
 {
     return m_alarmTime;
 }

 void NotesManager::setAlarmTime(const QDateTime& alarm)
 {
     m_alarmTime = alarm;
 }

 QString NotesManager::getAlarmMessage() const
 {
     return m_alarmMessage;
 }

 void NotesManager::setAlarmMessage(const QString& message)
 {
     m_alarmMessage = message;
 }

 void NotesManager::addNote(const QString& note, const QDateTime& alarm)
 {
     QString alert = alarm.toString("yyyy-MM-dd HH:mm:ss");
     QSqlQuery query("INSERT INTO todolist(notes, date) VALUES ('" + note + "', '" + alert + "')");
 }

 void NotesManager::removeNote(int id)
 {
     QSqlQuery query("DELETE FROM todolist WHERE id='" + QString::number(id) + "'");
 }

 void NotesManager::setSearch(const QString& search)
 {
     m_search = search;
 }

 QList<QObject*> NotesManager::getNotes(const QString& search)
 {
     m_notes.clear();
     setSearch(search);

     QString queryString = "SELECT * FROM todolist";
     if (m_search != "") queryString += " WHERE notes LIKE '%" + m_search + "%'";
     queryString += " ORDER BY date";

     QSqlQuery query(queryString);
     while (query.next()) {
         Note *entry = new Note(this);
         entry->setIndex(query.value(0).toInt());
         entry->setMessage(query.value(1).toString());
         entry->setAlarm(QDateTime::fromString(query.value(2).toString(), "yyyy-MM-dd HH:mm:ss"));

         m_notes << entry;
     }

     return m_notes;
 }

 #ifdef DECLARATIVE
 QDeclarativeListProperty<QObject> NotesManager::noteSet()
 {
     m_notes = getNotes(m_search);
     return QDeclarativeListProperty<QObject>(this, m_notes);
 }
 #endif