Thank you, the timeout thing was confusing me, I just need to use the
setTimeout() whenever I want the actions to run in sequence. Thank
you all for your help.
On Nov 25, 7:11 pm, Erik Kay <erik...@chromium.org> wrote:
> Think about it like this, every time you call one of the chrome.* API
> functions, it's like you're actually putting it in a setTimeout rather than
> calling it directly (although the delay is very short). For example, if you
> wrote this code:
>
> var foo = 0;
> setTimeout(function() { foo = foo + 1; console.log("in setTimeout: " +
> foo)}, 0);
> foo = foo + 1;
> console.log("after setTimeout: " + foo);
>
> the output would be:
> after setTimeout: 1
> in setTimeout: 2
>
> So if you really wanted the "after" to happen second, you'd have to change
> your code a bit:
>
> var foo = 0;
> setTimeout(function() { foo = foo + 1; console.log("in setTimeout: " + foo);
> after();}, 0);
> function after() {
> foo = foo + 1;
> console.log("after setTimeout: " + foo);
>
> }
>
> Now you'd get:
>
> in setTimeout: 1
> after setTimeout: 2
>
> Erik
>
>
>
> On Wed, Nov 25, 2009 at 3:42 PM, Randall Crock <rlcr...@gmail.com> wrote:
> > I am using the debugger and adding a breakpoint on the line following
> > chrome.tabs.getSelected() where you have the second console.log(). How do I
> > wait until the asynchronous call has completed before moving on?
>
> > Randy
>
> > *From:* Erik Kay [mailto:erik...@google.com]
> > *Sent:* Wednesday, November 25, 2009 6:40 PM
> > *To:* Rlcrock
> > *Cc:* Chromium-extensions
> > *Subject:* Re: [chromium-extensions] Re: browser_action & tabs
>
> > When are you checking t? If your code looks like this:
>
> > var t = null;
>
> > chrome.tabs.getSelected(null, function(tab){
>
> > t = tab;
> > console.log(tab);});
>
> > console.log("t == " + t);
>
> > Then it will always print out "t == null". The reason is that the callback
> > function happens asynchronously. Even though it linearly looks like the
> > callback happens before the console.log, it actually happens some time
> > later.
>
> > Erik
>
> > On Wed, Nov 25, 2009 at 3:27 PM, Rlcrock <rlcr...@gmail.com> wrote:
>
> > Ok, so using the debug tools, I can print out the tab using console.log
> > (), but when I try to assign to local variables, they do not get
> > changed at all.
>
> > var t = null;
>
> > chrome.tabs.getSelected(null, function(tab){
>
> > t = tab;
> > console.log(tab);});
>
> > When it runs, the console will have a correct trace, but t will still
> > be null.
>
> > On Nov 25, 4:02 pm, Rafael Weinstein <rafa...@chromium.org> wrote:
> > > Stepping won't work because the function you provide gets called later.
>
> > > Setting a break point inside that function should work.
>
> > > Does it not?
>
> > > On Wed, Nov 25, 2009 at 12:15 PM, Rlcrock <rlcr...@gmail.com> wrote:
> > > > I am having trouble getting getSelected to read at all.
>
> > > > my code is:
>
> > > > var url, title;
> > > > chrome.tabs.getSelected(null, function(tab){
> > > > url = tab.url;
> > > > title = tab.title;
> > > > console.log(tab);});
>
> > > > but it never seems to execute the function as I step through in the
> > > > debugger, and url and title are always undefined. Is there something
> > > > I am doing wrong with my request?
>
> > > > On Nov 24, 1:49 pm, lorenx <lor...@gmail.com> wrote:
> > > >> hi,
> > > >> i found out that the extension behavior about the tab properties
> > > >> differ between the two modes, production and development:
> > > >> if i use the popup normally i don't need to wait for the onupdated
> > > >> listener (the page is already loaded) but if i'm in dev mode, the
> > > >> popup is called now from chrome-extension://<extension-id>/popup.html,
> > > >> i need the listener to ensure the title not to be undefined.
>
> > > >> i'm try to fix both the behavior in one solution but it is not so
> > > >> essential...
> > > >> thanks.
>
> > > >> On Nov 23, 11:34 pm, lorenx <lor...@gmail.com> wrote:
>
> > > >> > perfect!
> > > >> > and... sorry but... how to combine both?
>
> > > >> > something like:
>
> > > >> >chrome.tabs.getSelected(null, function(tab){
> > > >> > chrome.tabs.onUpdated.addListener(function(tab.id,
> > changeInfo, tab2)
> > > >> > {
> > > >> > // code here...
> > > >> > });
>
> > > >> > });
>
> > > >> > or:
>
> > > >> > chrome.tabs.onUpdated.addListener(function(<what_here?>, changeInfo,
> > > >> > tab) {
> > > >> > chrome.tabs.getSelected(null, function(tab){
> > > >> > // code here...
> > > >> > });
>
> > > >> > });
>
> > > >> > On Nov 23, 8:34 pm, Rafael Weinstein <rafa...@chromium.org> wrote:
>
> > > >> > > You need to listen to chrome.tabs.onUpdated event.
>
> > > >> > >http://code.google.com/chrome/extensions/tabs.html#event-onUpdated
>
> > > >> > > something like
>
> > > >> > > chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab)
> > {
> > > >> > > if (changeInfo.status == 'complete') {
> > > >> > > tabUrl = tab.url;
> > > >> > > tabTitle = tab.title;
> > > >> > > createLink();
> > > >> > > }
>
> > > >> > > On Sun, Nov 22, 2009 at 11:59 AM, lorenx <lor...@gmail.com>
> > wrote:
> > > >> > > > ok, i did it. thank you!
>
> > > >> > > > but the tab is loading and the title is still not available...
> > > >> > > > how to wait for the tab to be completly loaded?
>
> > > >> > > > On Nov 22, 5:27 am, donaddon <don...@verizon.net> wrote:
> > > >> > > >> I'm not sure I understand what you are expecting, but
> > getSelected is
> > > >> > > >> an asynchronous call. So you can't expect tabUrl and tabTitle
> > to be
> > > >> > > >> set at the time you are currently calling createLink. They
> > will only
> > > >> > > >> be set when the callback function is called. You may be
> > looking to do
> > > >> > > >> something like this:
>
> > > >> > > >>chrome.tabs.getSelected(null, function(tab) {
> > > >> > > >> tabUrl = tab.url;
> > > >> > > >> tabTitle = tab.title;
> > > >> > > >> createLink();
>
> > > >> > > >> });
>
> > > >> > > >> On Nov 21, 6:21 am, lorenx <lor...@gmail.com> wrote:
>
> > > >> > > >> > hi all,
> > > >> > > >> > i have a problem getting current tab info.
>
> > > >> > > >> > var tabUrl;
> > > >> > > >> > var tabTitle;
> > > >> > > >> > function getTabInfo() {
> > > >> > > >> > chrome.tabs.getSelected(null, function(tab){
> > > >> > > >> > console.dir(tab);
>
> > > >> > > >> > tabUrl = tab.url;
> > > >> > > >> > tabTitle = tab.title;
> > > >> > > >> > });}
>
> > > >> > > >> > function createLink() {
> > > >> > > >> > console.log(tabUrl + '|' + tabTitle);}
>
> > > >> > > >> > getTabInfo();
> > > >> > > >> > createLink();
>
> > > >> > > >> > what's wrong with this code?
> > > >> > > >> > the tab object is output after createLink() is called...
> > > >> > > >> > should i have to set up some communication system between
> > components?
> > > >> > > >> > thanks.
>
> > > >> > > > --
>
> > > >> > > > You received this message because you are subscribed to the
> > Google Groups "Chromium-extensions" group.
> > > >> > > > To post to this group, send email to
> > chromium-extensi...@googlegroups.com.
> > > >> > > > To unsubscribe from this group, send email to
> > chromium-extensions+unsubscr...@googlegroups.com<chromium-extensions%2Bunsu
> > bscr...@googlegroups.com>
> > .
> > > >> > > > For more options, visit this group athttp://
> > groups.google.com/group/chromium-extensions?hl=.
>
> > > > --
>
> > > > You received this message because you are subscribed to the Google
> > Groups "Chromium-extensions" group.
> > > > To post to this group, send email to
> > chromium-extensi...@googlegroups.com.
> > > > To unsubscribe from this group, send email to
> > chromium-extensions+unsubscr...@googlegroups.com<chromium-extensions%2Bunsu
> > bscr...@googlegroups.com>
> > .
>
> > > > For more options, visit this group athttp://
> > groups.google.com/group/chromium-extensions?hl=en.
>
> > --
>
> > You received this message because you are subscribed to the Google Groups
> > "Chromium-extensions" group.
> > To post to this group, send email to chromium-extensi...@googlegroups.com.
> > To unsubscribe from this group, send email to
> > chromium-extensions+unsubscr...@googlegroups.com<chromium-extensions%2Bunsu
> > bscr...@googlegroups.com>
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/chromium-extensions?hl=en.
--
You received this message because you are subscribed to the Google Groups
"Chromium-extensions" group.
To post to this group, send email to chromium-extensi...@googlegroups.com.
To unsubscribe from this group, send email to
chromium-extensions+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/chromium-extensions?hl=en.
