SelectorGadget is an open source bookmarklet that makes CSS selector generation and discovery on complicated sites a breeze.

Please visit http://www.selectorgadget.com to try it out.

• CoffeeScript
• jQuery
• diff-match-patch

SelectorGadget can be extended for use in custom workflows with a remote interface that replaces the standard display and controls.

To define a remote interface, create a JavaScript file with any functionality you need, and append any relevant controls to SelectorGadget's UI container. Here's a simple example:

// sg_interface.js

var SG = window.selector_gadget

// Add field to display current selection (note the use of jQuerySG, 
// SelectorGadget's jQuery alias).
var path = jQuerySG('<input>', { id: 'sg-status', class: 'selectorgadget_ignore' })
SG.sg_div.append(path)
SG.path_output_field = path.get(0)

// Add button to dismiss SelectorGadget
var btnOk = jQuerySG('<button>', { id: 'sg-ok', class: 'selectorgadget_ignore' }).text('OK')
SG.sg_div.append(btnOk)
jQuerySG(btnOk).bind('click', function(event) {
  jQuerySG(SG).unbind()
  jQuerySG(SG.sg_div).unbind()
  SG.unbindAndRemoveInterface()
  SG = null
})

// Watch the input field for changes
var val = saved = path.val()
var tid = setInterval(function() {
  val = path.val()
  if(saved != val) {
    console.log('New path', val, 'matching', (jQuerySG(val).length), 'element(s)')
    saved = val
  }
}, 50)

Set the path to the remote interface in SelectorGadget's sg_options object prior to instantiation, like this:

window.sg_options = {
  remote_interface: '/path/to/sg_interface.js'
}

window.selector_gadget = new SelectorGadget()
// ...

Start by installing development dependencies with

bundle

and then run

guard

to watch and regenerate SelectorGadget's .coffee and .scss files.

SelectorGadget is tested with http://pivotal.github.com/jasmine/. With guard running, open spec/SpecRunner.html in your browser to run the tests. (On a Mac, just do open spec/SpecRunner.html)

To manually test during local development, open spec/test_sites/bookmarklet_local.html and use that local bookmarklet on the contents of spec/test_sites.