Security/reviews/firefox/PageInspectorHighlighter

Items to be reviewed

• Page Inspector / Highlighter
• CSS Rules View

Introduce Feature

Goal of Feature, what is trying to be achieved (problem solved, use cases, etc)

• The goal of the Page Inspector is to provide a facility to examine the

contents of a web page and its associated styles. It is a feature for developers and anyone interested in learning more about HTML and CSS.

• The Page inspector and highlighter is designed to be as uninvasive as

possible. Content is not touched by the tool until a user modifies it.

What solutions/approaches were considered other than the proposed solution?

• Not building a page inspector. Relying on third party addons.

Why was this solution chosen?

• This is considered an important feature for web developers. Reliance

on third parties to provide this functionality isn't really an option anymore. Also, we've approached the problem from a slightly different direction and have made some interesting gains in usability as a result.

Threat Brainstorming

• is dom xss and clickjacking an issue to consider. (Probably not because this is outside the realestate of the webpage.)
• Are events supposed to propagate from the inspect view to the underlying webpage? (touchpad scroll events seem to)
  • Yes, events are supposed to pass through
  • Events won't be passed if we are in the panels