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-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the QtDeclarative module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-import QtQuick 2.0
-import QtQuick.LocalStorage 2.0 as Sql
-
-// Models a high score table.
-//
-// Use this component like this:
-//
-// HighScoreModel {
-// id: highScores
-// game: "MyCoolGame"
-// }
-//
-// Then use either use the top-score properties:
-//
-// Text { text: "HI: " + highScores.topScore }
-//
-// or, use the model in a view:
-//
-// ListView {
-// model: highScore
-// delegate: Component {
-// ... player ... score ...
-// }
-// }
-//
-// Add new scores via:
-//
-// saveScore(newScore)
-//
-// or:
-//
-// savePlayerScore(playerName,newScore)
-//
-// The best maxScore scores added by this method will be retained in an SQL database,
-// and presented in the model and in the topScore/topPlayer properties.
-//
-
-ListModel {
- id: model
- property string game: ""
- property int topScore: 0
- property string topPlayer: ""
- property int maxScores: 10
-
- function __db()
- {
- return Sql.openDatabaseSync("HighScoreModel", "1.0", "Generic High Score Functionality for QML", 1000000);
- }
- function __ensureTables(tx)
- {
- tx.executeSql('CREATE TABLE IF NOT EXISTS HighScores(game TEXT, score INT, player TEXT)', []);
- }
-
- function fillModel() {
- __db().transaction(
- function(tx) {
- __ensureTables(tx);
- var rs = tx.executeSql("SELECT score,player FROM HighScores WHERE game=? ORDER BY score DESC", [game]);
- model.clear();
- if (rs.rows.length > 0) {
- topScore = rs.rows.item(0).score
- topPlayer = rs.rows.item(0).player
- for (var i=0; i<rs.rows.length; ++i) {
- if (i < maxScores)
- model.append(rs.rows.item(i))
- }
- if (rs.rows.length > maxScores)
- tx.executeSql("DELETE FROM HighScores WHERE game=? AND score <= ?",
- [game, rs.rows.item(maxScores).score]);
- }
- }
- )
- }
-
- function savePlayerScore(player,score) {
- __db().transaction(
- function(tx) {
- __ensureTables(tx);
- tx.executeSql("INSERT INTO HighScores VALUES(?,?,?)", [game,score,player]);
- fillModel();
- }
- )
- }
-
- function saveScore(score) {
- savePlayerScore("player",score);
- }
-
- function clearScores() {
- __db().transaction(
- function(tx) {
- tx.executeSql("DELETE FROM HighScores WHERE game=?", [game]);
- fillModel();
- }
- )
- }
-
- Component.onCompleted: { fillModel() }
-}