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Adding global listener for errors #55

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Adding global listener for errors #55

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6 changes: 6 additions & 0 deletions docs/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,12 @@ var dbOpenPromise = $.indexedDB("database_name", {
var obj2 = transaction.createObjectStore(store2);
obj1.createIndex("index");
}
},
"onError" : function(error, event) {
// (Additional) Function called whenever you receive an error on any Deferred
// This function come in handy in the development phase, when you don't specify
// all the "fail" handler, and still get a lot of trouble. You better specify a function
// here when starting a new development.
}
});
```
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19 changes: 14 additions & 5 deletions src/jquery.indexeddb.js
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Original file line number Diff line number Diff line change
Expand Up @@ -55,9 +55,18 @@
}


function getDeferred(fn) {
return $.Deferred(function(dfd) {
if (config && typeof(config.onError) == "function") {
dfd.fail(config.onError);
}
fn(dfd);
})
}

var wrap = {
"request": function(req, args) {
return $.Deferred(function(dfd) {
return getDeferred(function(dfd) {
try {
var idbRequest = typeof req === "function" ? req(args) : req;
idbRequest.onsuccess = function(e) {
Expand Down Expand Up @@ -187,7 +196,7 @@
},

"cursor": function(idbCursor, callback) {
return $.Deferred(function(dfd) {
return getDeferred(function(dfd) {
try {
console.log("Cursor request created", idbCursor);
var cursorReq = typeof idbCursor === "function" ? idbCursor() : idbCursor;
Expand Down Expand Up @@ -336,7 +345,7 @@
"deleteDatabase": function() {
// Kinda looks ugly coz DB is opened before it needs to be deleted.
// Blame it on the API
return $.Deferred(function(dfd) {
return getDeferred(function(dfd) {
dbPromise.then(function(db, e) {
db.close();
wrap.request(function() {
Expand All @@ -358,7 +367,7 @@
"transaction": function(storeNames, mode) {
!$.isArray(storeNames) && (storeNames = [storeNames]);
mode = getDefaultTransaction(mode);
return $.Deferred(function(dfd) {
return getDeferred(function(dfd) {
dbPromise.then(function(db, e) {
var idbTransaction;
try {
Expand Down Expand Up @@ -397,7 +406,7 @@
result = {};

function op(callback) {
return $.Deferred(function(dfd) {
return getDeferred(function(dfd) {
function onTransactionProgress(trans, callback) {
try {
console.log("Finally, returning the object store", trans);
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