xpcom

I'm attempting to port over an Internet Explorer plugin to Firefox, but I'm not sure where to look for what I need. Basically I need to be able to filter all content that is received by the browser with a certain Content-Type header. I tried implementing a stream converter, and this works, but only for the top-level document in the page, frame, or iframe. I had the same problem with IE, and getting around it was really hacky, and since I would ideally like this to be cross platform I would really like to be able to do this in Firefox without resorting to vtable hacks. The content is served

I have an idea of studying user behavior on the browser, for which I intend to make a Chrome/Firefox extension to study the behavior dynamically. I have some predefined libraries in Java and Python to analyze the results, which will be impossible to program in plain JavaScript. Now for my question: is it possible to use third party libraries, especially those of Python or Java like plain function calls? I have a vague idea about something like Java XPCOM or PyXPCOM for Firefox. However, for a beginner, it all looks so scary. I started making Add-On for Firefox, but got lost somewhere in the

I'm taking a foray into Firefox extension development for the first time, and so far it's been pretty comfortable going, but I'm running into a problem; one of the things I need to do overwriting the built-in nsIPromptService and replacing it with something of my own instead. I walked through the basic XPCOM component creation tutorial here and got the hello world one working: https://developer.mozilla.org/en/creating_xpcom_components And everything in that seems to work fine, but nothing I've been able to find or research shows how I can overwrite an interface from javascript. I've seen

I'm trying to install hotmail to my mailto handlers: This is accomplished with this code from webpage scope: navigator.registerProtocolHandler('mailto','http://mail.live.com/secure/start?action=compose&to=%s','Live Mail'); From XPCOM we would have to use this: MXR ::WebContentConverter.js#369) . So from searching github code I figure you import it like this: var nsiwchr = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].getService(Ci.nsIWebContentHandlerRegistrar); So I would register it like this: nsiwchr.registerProtocolHandler('mailto','http://mail.live.com/secure

Is it possible to use nsISelectionController to watch when a a highlight/selection is made? I know that there are different selection scopes. I want to watch when a user makes a selection in the default scope seen at MXR - nsISelectionController Constants . Kind of like an addEventListener on select change but on the text nodes of the document. Thanks Noitidart I found a solution but it doesn't use nsIController as @Neil had recommended in a SO topic HERE to look at viewSource.js. Im still interested in a nsIController solution if possible, im trying to understand that sucker it confuses me.