Modified delete function in calCachedCalendar.js

calCachedCalendar.js

deleteItem: function(item, listener) {
        /*if (this.offline) {
            //ASSERT(false, "unexpected!");
            if (listener) {
                listener.onOperationComplete(this, Components.interfaces.calIErrors.CAL_IS_READONLY,
                                             Components.interfaces.calIOperation.DELETE, null, null);
            }
            
            return null;
        
        }*/
        // Forwarding add/modify/delete to the cached calendar using the calIObserver
        // callbacks would be advantageous, because the uncached provider could implement
        // a true push mechanism firing without being triggered from within the program.
        // But this would mean the uncached provider fires on the passed
        // calIOperationListener, e.g. *before* it fires on calIObservers
        // (because that order is undefined). Firing onOperationComplete before onAddItem et al
        // would result in this facade firing onOperationComplete even though the modification
        // hasn't yet been performed on the cached calendar (which happens in onAddItem et al).
        // Result is that we currently stick to firing onOperationComplete if the cached calendar
        // has performed the modification, see below:
        var this_ = this;
        var opListener = {
            onGetResult: function(calendar, status, itemType, detail, count, items) {
                ASSERT(false, "unexpected!");
            },
            onOperationComplete: function(calendar, status, opType, id, detail) {
                if (Components.isSuccessCode(status)) {
                    this_.mCachedCalendar.deleteItem(item, listener);
                } else if (listener) {
                    listener.onOperationComplete(this_, status, opType, id, detail);
                }
            }
        }
        return this.mCachedCalendar.deleteItem(item, opListener);
        //return this.mUncachedCalendar.deleteItem(item, opListener);
    }