Implement localStorage.key() and localStorage.length

This brings PhoneGap's implementation in line with the spec at http://dev.w3.org/html5/webstorage/
It makes the following demo work when you include PhoneGap: http://people.w3.org/mike/localstorage.html
I was hopeful it would make my app, which makes use of LawnChair, work, but I've had no such luck as of yet.
This commit is contained in:
Mark Darbyshire 2011-02-15 18:44:06 +13:00 committed by Fil Maj
parent 939b70243d
commit 47ca081f36

View File

@ -307,15 +307,21 @@ var CupcakeLocalStorage = function() {
this.db = openDatabase('localStorage', '1.0', 'localStorage', 2621440);
var storage = {};
this.length = 0;
function setLength (length) {
this.length = length;
localStorage.length = length;
}
this.db.transaction(
function (transaction) {
var i;
transaction.executeSql('CREATE TABLE IF NOT EXISTS storage (id NVARCHAR(40) PRIMARY KEY, body NVARCHAR(255))');
transaction.executeSql('SELECT * FROM storage', [], function(tx, result) {
for(i = 0; i < result.rows.length; i++) {
storage[result.rows.item(i).id] = result.rows.item(i).body;
for(var i = 0; i < result.rows.length; i++) {
storage[result.rows.item(i)['id']] = result.rows.item(i)['body'];
}
PhoneGap.initializationComplete("cupcakeStorage");
setLength(result.rows.length);
PhoneGap.initializationComplete("cupcakeStorage");
});
},
@ -324,13 +330,13 @@ var CupcakeLocalStorage = function() {
}
);
this.setItem = function(key, val) {
//console.log('set');
if (typeof(storage[key])=='undefined') {
this.length++;
}
storage[key] = val;
this.db.transaction(
function (transaction) {
transaction.executeSql('CREATE TABLE IF NOT EXISTS storage (id NVARCHAR(40) PRIMARY KEY, body NVARCHAR(255))');
transaction.executeSql('REPLACE INTO storage (id, body) values(?,?)', [key,val]);
}
);
@ -340,24 +346,36 @@ var CupcakeLocalStorage = function() {
};
this.removeItem = function(key) {
delete storage[key];
this.length--;
this.db.transaction(
function (transaction) {
transaction.executeSql('CREATE TABLE IF NOT EXISTS storage (id NVARCHAR(40) PRIMARY KEY, body NVARCHAR(255))');
transaction.executeSql('DELETE FROM storage where id=?', [key]);
}
);
};
this.clear = function() {
storage = {};
this.length = 0;
this.db.transaction(
function (transaction) {
transaction.executeSql('CREATE TABLE IF NOT EXISTS storage (id NVARCHAR(40) PRIMARY KEY, body NVARCHAR(255))');
transaction.executeSql('DELETE FROM storage', []);
}
);
};
this.key = function(index) {
var i = 0;
for (var j in storage) {
if (i==index) {
return j;
} else {
i++;
}
}
return null;
}
} catch(e) {
alert("Database error "+e+".");
return;