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43 import QtQuick.LocalStorage 2.0 as Sql
45 // Models a high score table.
47 // Use this component like this:
54 // Then use either use the top-score properties:
56 // Text { text: "HI: " + highScores.topScore }
58 // or, use the model in a view:
62 // delegate: Component {
63 // ... player ... score ...
67 // Add new scores via:
69 // saveScore(newScore)
73 // savePlayerScore(playerName,newScore)
75 // The best maxScore scores added by this method will be retained in an SQL database,
76 // and presented in the model and in the topScore/topPlayer properties.
81 property string game: ""
82 property int topScore: 0
83 property string topPlayer: ""
84 property int maxScores: 10
88 return Sql.openDatabaseSync("HighScoreModel", "1.0", "Generic High Score Functionality for QML", 1000000);
90 function __ensureTables(tx)
92 tx.executeSql('CREATE TABLE IF NOT EXISTS HighScores(game TEXT, score INT, player TEXT)', []);
95 function fillModel() {
99 var rs = tx.executeSql("SELECT score,player FROM HighScores WHERE game=? ORDER BY score DESC", [game]);
101 if (rs.rows.length > 0) {
102 topScore = rs.rows.item(0).score
103 topPlayer = rs.rows.item(0).player
104 for (var i=0; i<rs.rows.length; ++i) {
106 model.append(rs.rows.item(i))
108 if (rs.rows.length > maxScores)
109 tx.executeSql("DELETE FROM HighScores WHERE game=? AND score <= ?",
110 [game, rs.rows.item(maxScores).score]);
116 function savePlayerScore(player,score) {
120 tx.executeSql("INSERT INTO HighScores VALUES(?,?,?)", [game,score,player]);
126 function saveScore(score) {
127 savePlayerScore("player",score);
130 function clearScores() {
133 tx.executeSql("DELETE FROM HighScores WHERE game=?", [game]);
139 Component.onCompleted: { fillModel() }