Hi,
So I realized this was working but that my code which checked the
variable was running before the callback.
This lead to a different problem where I can't ever know the status of
a message in the same function that sent the message. Or even in a
few functions later due to the delay.
I tried to get synchronous messages by spinning in a loop checking a
status variable, but it seems that in JS, while the loop is running
nothing else happens. Probably because the extension is all in one
thread.
Right now, I'm planning on refactoring my code to a more chrome
friendly manner but it seems that it could be good to be able to know
the that a message succeeded at some specified point of time instead
of a vague time in the future.
Erek
On Sat, Jan 2, 2010 at 6:48 AM, Erek Speed <melin...@gmail.com> wrote:
> I want to set a variable from inside my callback to a sendRequest
> function.
>
> The mappy extension gives an example of doing this but I can't seem to
> manage it using global or local variables.
>
> Here's mappy's code for reference:
> <script>
> // Global accessor that the popup uses.
> var addresses = {};
> var selectedAddress = null;
> var selectedId = null;
>
> function updateAddress(tabId) {
> chrome.tabs.sendRequest(tabId, {}, function(address) {
> addresses[tabId] = address;
> if (!address) {
> chrome.pageAction.hide(tabId);
> } else {
> chrome.pageAction.show(tabId);
> if (selectedId == tabId) {
> updateSelected(tabId);
> }
> }
> });
> }
> ...
>
> In the response function, address is changed which is convenient.
> What is it about addresses that let's it retain value even in the
> mystical space of messages?
>
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