Script Panel Refactoring

From FirebugWiki

Revision as of 16:54, 17 May 2012

This page summarizes support for remote JS debugging in Firebug (based on JSD2).

Goals

• Adopt JSD2 (get rid of all JSD1 APIs)
• Support Remote Debugging

JSD2 API Requirements

The following list summarizes list of high-level features that Firebug needs to support. It should be verified that all the features can re-implemented on top of JSD2 before starting the refactoring.

• List of scripts available on selected tab (including static, events and evaluated scripts) including iframes.
• Stepping (into, over, out, resume, current line)
• Support for debugger; keyword
• Support for breakpoints (add, remove, enable, disabled, conditional, list of existing breakpoints)
• Recognize executable lines
• Dynamic eval in a frame (used e.g. by the Watch panel when the debugger is halted)
• Get stack frames (including passed arguments)
• Scope chain variable exploring (with & closure scopes). It should be possible to see all values.
• Break on next call
• Profiling (was part of JSD1)
• Tracking (break on) throw/catch/error
• Tracking (monitoring) function calls
• Freezing page UI if debugger is halted (including timeouts, intervals and worker threads)

Not Ready in JSD2

• There is not source for evals.
• new Function scripts?
• Meta bug: Implement a script Debugger
  • As soon as this one is fixed
  • Profiling is unrelated to JSD2. What it the plan here?
  • Tracking (break on) throw/catch/error, also what is that plan?

Script Panel Architecture

The Script panel needs to be built on top of JSD2, remote protocol and Firebug remote architecture. Remoting is already supported by [HTTP Monitor] and both components should share the same approaches and API

TBD

Resources

• Debugger
• DevTools Debugger
• Remote Debugging Protocol