+
+function saveTrackDump() {
+ if (gTrack.length) {
+ var out = JSON.stringify(gTrack);
+ var outDataURI = "data:application/json," + encodeURIComponent(out);
+ window.open(outDataURI, 'JSON dump');
+ }
+}
+
+var gPrefs = {
+ objStore: "prefs",
+
+ get: function(aKey, aCallback) {
+ if (!mainDB)
+ return;
+ var transaction = mainDB.transaction([this.objStore]);
+ var request = transaction.objectStore(this.objStore).get(aKey);
+ request.onsuccess = function(event) {
+ aCallback(request.result, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ aCallback(undefined, event);
+ };
+ },
+
+ set: function(aKey, aValue, aCallback) {
+ if (!mainDB)
+ return;
+ var success = false;
+ var transaction = mainDB.transaction([this.objStore], "readwrite");
+ var objStore = transaction.objectStore(this.objStore);
+ var request = objStore.put(aValue, aKey);
+ request.onsuccess = function(event) {
+ success = true;
+ if (aCallback)
+ aCallback(success, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ if (aCallback)
+ aCallback(success, event);
+ };
+ },
+
+ unset: function(aKey, aCallback) {
+ if (!mainDB)
+ return;
+ var success = false;
+ var transaction = mainDB.transaction([this.objStore], "readwrite");
+ var request = transaction.objectStore(this.objStore).delete(aKey);
+ request.onsuccess = function(event) {
+ success = true;
+ if (aCallback)
+ aCallback(success, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ if (aCallback)
+ aCallback(success, event);
+ }
+ }
+};
+
+var gTrackStore = {
+ objStore: "track",
+
+ getList: function(aCallback) {
+ if (!mainDB)
+ return;
+ var transaction = mainDB.transaction([this.objStore]);
+ var objStore = transaction.objectStore(this.objStore);
+ if (objStore.getAll) { // currently Mozilla-specific
+ objStore.getAll().onsuccess = function(event) {
+ aCallback(event.target.result);
+ };
+ }
+ else { // Use cursor (standard method).
+ var tPoints = [];
+ objStore.openCursor().onsuccess = function(event) {
+ var cursor = event.target.result;
+ if (cursor) {
+ tPoints.push(cursor.value);
+ cursor.continue();
+ }
+ else {
+ aCallback(tPoints);
+ }
+ };
+ }
+ },
+
+ push: function(aValue, aCallback) {
+ if (!mainDB)
+ return;
+ var transaction = mainDB.transaction([this.objStore], "readwrite");
+ var objStore = transaction.objectStore(this.objStore);
+ var request = objStore.add(aValue);
+ request.onsuccess = function(event) {
+ if (aCallback)
+ aCallback(request.result, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ if (aCallback)
+ aCallback(false, event);
+ };
+ },
+
+ clear: function(aCallback) {
+ if (!mainDB)
+ return;
+ var success = false;
+ var transaction = mainDB.transaction([this.objStore], "readwrite");
+ var request = transaction.objectStore(this.objStore).clear();
+ request.onsuccess = function(event) {
+ success = true;
+ if (aCallback)
+ aCallback(success, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ if (aCallback)
+ aCallback(success, event);
+ }
+ }
+};