Saying hello world to Opera extensions!

Saying hello world to Opera extensions!

In this tutorial we give you a basic walkthrough to create the classic Hello World, using Opera extensions.

( Read the article )

Error in the code:

popup: {
            href: "popup.html",
            width: 110,
            height: 30;
          }

chrome vs opera badge http://twitpic.com/2zguts

Is there currently any way to close the popup by a script?

shoust
http://dev.opera.com/forums/topic/776342
«clicking on the button again closes it. Looking at the JSDoc there is no methods to close it from within the popup.»

Originally posted by shoust:

Is there currently any way to close the popup by a script?

I think he meant programatically. I've been looking for this answer myself. It seems the popup can't close itself and the background page can't close it either.

In the article "Opera extensions: buttons, badges and popups" it says: "Be aware that if you change the href property while the popup is open then the popup will close." (http://dev.opera.com/articles/view/opera-extensions-buttons-badges-and-popups/#popup_contents).

Another problem with popup. If popup is opened, extension.tabs.getFocused() returned null. I tried to use this code, but it's seems ugly:

	   var extension = window.opera.extension, tab = '';
	   extension.onmessage = function(e){
		if(e.data && extension.tabs.getFocused())tab = extension.tabs.getFocused();

http://ruzanow.ru/opera/extensions/google-translate.oex

getFocused()

Very bugged. It not worked when the page isn't completely loaded: «Uncaught exception: TypeError: 'tab.postMessage' is not a function»

Also if you use back/forward on the pages what's contain iframes: http://dev.opera.com/forums/findpost.pl?id=7454462

If you want to communicate with a popup, messages can be used.

I want to communicate with userjs in the current page. From popup.

how can I develop extension w/o putting it every time in .oex archive?

i copied everything you guys told me to do and i dragged my new file after zipping it to the browser and it said "Installation Failed" even when i make my own but when i download the already made one it works

Originally posted by infostations:

i copied everything you guys told me to do and i dragged my new file after zipping it to the browser and it said "Installation Failed" even when i make my own but when i download the already made one it works

did you zip the contents? or the folder of the contents? it should be the former.

Originally posted by fetis:

how can I develop extension w/o putting it every time in .oex archive?

this is the only way now, but we're making changes so that it's easier in the next iteration. Maybe in the form of widgets style installation where you can drag your config.xml only. or maybe some other ways.

Originally posted by desktopteam blog:

For extensions developers, from now on if you drag'n'drop extension's config.xml file onto Opera a separate list is created in Extensions Manager which is titled 'Developer mode'. Each entry on this list has additional buttons: 'Reload' (you don't have to install and uninstall to see the changes now, just click 'Reload') and 'Open containing folder' which we think can be quite useful.

source: http://my.opera.com/desktopteam/blog/2010/11/06/snapshot

HTH

What is this Extension supposed to do? Probably just showing a popup, but i don't know for sure, since the downloaded example doesn't work either.

Mediin: Yes, it's just a very simple extension to demonstrate basic functionality, so it just opens a popup.

Proghead: Could you tell me what OS you're using please? I'm trying to reproduce the issue but in the meantime, using wget to download it should work:

wget http://dev.opera.com/articles/view/opera-extensions-hello-world/hello.oex

please give my message to opera developers that UCWEB IS FAR BETTER THAN PERA MINI now so try to advance Opera with keypad handling system. thanks

Awesome!
I just built my first OEX in less than five min!!!

There is a mistype in config.xml file in this line:

<widget xmlns="http://www.w3.org/ns/widgets" id="http://www.example.org/helloworld">

It should be:
<widget xmlns="http://www.w3.org/ns/widgets" id="http://www.example.org/helloworld">

Without this fix it doesn't work on my side at least.
Took me few minutes to find this.

Shame to post "Hello world" examples not working!
However it is great step from Opera to introduce extensions.

Thanks.

So does it mean everything will be smooth now?

Very nice =D Tnx