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Questions tagged [opera-extension]

This tag is dedicated to development of extensions for the Opera browser.

This tag is dedicated to development of extensions for the Opera browser. Opera extensions are being developed using web technologies such as JavaScript, HTML and CSS. Starting points:

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CSS images not working with Opera Next Extension

I'm in the process of porting a Chrome extension to Opera Next. Everything seems to be working except for CSS images. In Chrome, we're specifying an image in CSS like this: #webapps-compose img { content:…
Mike Kaply
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Opera Extension: selecting text and page menu

What is the simplest way to create Opera addon with such functionality: user selects text on the page (eg. menu), clicks right button and sees: ?
Vladimir Kishlaly
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How to make a tab redirect in the Opera extension?

I'm new to Opera extension development. I need to create an extension which will filter some special URL's and then redirect the user to another url in the same tab. I didn't find Opera API to intercept requests or catch the event of tab loading.…
Andrew
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Alternate for document-start in Opera browser

I have seen "@run-at document-start" and "contentScriptWhen: 'start' " in Firefox extension(or userscript). All these statements are used to run some scripts, while the web page starts loading in Firefox. Now I want to run my script at document…
Mmh
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Overlays in Opera Extensions

I'm a beginner to opera extension development. Is there an equivalent for firefox xul overlays in opera? I want to create temporary overlays as I hover the mouse over text. The overlay should change or disappear when the mouse is moved away from…
user1550120
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Installation of Opera Extension fails?

I am trying to install self-built extension for Opera . As Opera suggests : 1.One method is simply dragging .xml file to opera.And it gets installed in developer mode. Also it works pretty fine in my case. But the second method: 2.Zip the folder…
vijay
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Opera Extension Preferences through config.xml

I've defined 2 preferences in the extension's config.xml file: When I use the following to retrieve these value in the…
Sam
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undetected chrome extension with Opera

I have just installed Opera and add three extensions, none of them has this id : chrome-extension://bgpmiljelfnilfcfmoppijdkmccbccel/isolated-first.jst Does anybody know which plugin is hidden behind this extension? Expect to find the name of a…
Tabasco City
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Opera extension error "Uncaught exception: ReferenceError: Security violation"

I am working on an opera extension. The extension have a popup that will open a website in it. I get the below error at "xhr.send()" in popup.html file and i can't able to remove it. "[4/14/2013 12:51:19 PM] JavaScript - …
ssaaddii
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opera extension scripts and communication between them

I made an extension to the firefox using Add-on Builder tool. the extension structure is like, main addon code will run 2 content scripts (1 at run and 1 at ready states of document) the results of content scripts are send to main addon code(using…
Mmh
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Can my injected JavaScript be seen by the website author?

Let say I want to mess with particular site and inject some function there to interact with the page. Can then website admin check that by checking window object if there are only function defined by him, and if there are differences beam back by…
rsk82
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