Hi! I'm trying to modify the code form this tutorial: http://sites.google.com/site/hackathoninabox/chrome/extensions/tutorial for another blog. Here is my code (I tried to modify v2 from source):
// timeline attributes
var timeline;
var template;
var link;
var image;
var author;
var content;
var req; // request object
var tweets; // all currently fetched tweets
onload = setTimeout(init, 0); // workaround for http://crbug.com/24467
// initialize timeline template
function init() {
timeline = document.getElementById('timeline');
template = xpath('//o...@id="template"]/li', document);
link = xpath('//d...@class="thumbnail"]/a', template);
image = xpath('img', link);
author = xpath('//d...@class="text"]/a', template);
content = xpath('//d...@class="text"]/span', template);
getTweets();
}
// fetch timeline from server
function getTweets() {
req = new XMLHttpRequest();
req.open('GET', 'http://www.cirip.ro/statuses/public_timeline.json'
);
req.onload = processTweets;
req.send();
}
// process new batch of tweets
function processTweets() {
var res = JSON.parse(req.responseText);
tweets = res.concat(tweets);
update();
}
// update display
function update() {
var user;
var url;
var item;
for (var i in tweets) {
user = tweets[i].user;
url = 'http://www.cirip.ro/u/' + user.username;
// thumbnail
link.title = user.name;
link.href = openInNewTab(url);
image.src = user.profile_image_url;
image.alt = user.name;
// text
author.href = openInNewTab(url);
author.innerHTML = user.name;
content.innerHTML = linkify(tweets[i].text);
// copy node and update
item = template.cloneNode(true);
timeline.appendChild(item);
}
}
The request is made and req.responseText is returned correctly, however when
I use var res = JSON.parse(req.responseText); the execution of the script
stops. Can somebody tell me what is the matter with the returned
responseText that causes the parser to fail? (the original example is for
twitter and for it works perfectly)
Thanks,
Ildi
On Wed, Jan 13, 2010 at 6:41 PM, PhistucK <phist...@gmail.com> wrote:
> I do not think you have to manipulate any DOM for that, you just send the
> getSelection() value to the popup page.
> And yes, that is the only way to do it, you cannot access the content of a
> tab with any API chrome presents, you can only do so with content script
> (hence the name).
>
> ☆PhistucK
>
>
> On Wed, Jan 13, 2010 at 18:03, Petty <m...@paulgriffinpetty.com> wrote:
>
>> Brian --
>>
>> Seems like (and please correct me if I'm off) that I'd need to inject
>> a JavaScript file into the tab and set some var to getSelection on
>> every mouseup (assuming that's feasable on view-source) so the
>> Extension's popup.html could then grab that variable updated value to
>> pop into my form.
>>
>> If that's right, okay ... But since the Extension already works on
>> tabs this seems a little arduous. I'm hopeful that this can be done
>> without DOM manipulation.
>>
>> In case it helps I'm including the contents of files from my
>> implementation below.
>>
>> Also, here the URL to the actual extension:
>> http://gush.es/extras/gushes_chrome_ext/gushes.crx
>>
>> Thanks for your help;
>>
>> Paul
>>
>> On Jan 13, 2:52 am, Brian Kennish <bkenn...@chromium.org> wrote:
>> > On Mon, Jan 11, 2010 at 8:32 PM, Petty <m...@paulgriffinpetty.com>
>> wrote:
>> > > I'm actually just trying to use window.getSelection() on a tab that
>> > > has a view-source: displayed so that raw HTML can be posted through a
>> > > form in a Chrome extension's popup window.
>> >
>> > > I have it working for 'normal' window / tab displays but getSelection
>> > > () returns nothing on view-source: tabs.
>> >
>> > I created this test content script and it works fine on "view-source:"
>> pages:
>> >
>> > onmouseup = function() { alert(getSelection()); };
>> >
>> > Give it a try.
>>
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>>
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