Add event-palette. Ctrl-enter brings up a list of all events for focused element

No fuzzy finding just yet. This theme of a fuzzy-filterable list is common enough now that I think I want to extract it. We do it in the fuzzy-finder for buffers and files, as well as the autocomplete menu.

spec/extensions/event-palette-spec.coffee

@@ -0,0 +1,21 @@
+RootView = require 'root-view'
+EventPalette = require 'event-palette'
+$ = require 'jquery'
+
+describe "EventPalette", ->
+  [rootView, palette] = []
+
+  beforeEach ->
+    rootView = new RootView(require.resolve('fixtures/sample.js'))
+    rootView.activateExtension(EventPalette)
+    palette = EventPalette.instance
+
+  afterEach ->
+    rootView.remove()
+
+  describe "when shown", ->
+    ffit "shows a list of all valid events for the previously focused element", ->
+      rootView.attachToDom().focus()
+      rootView.trigger 'event-palette:show'
+      for [event, description] in rootView.getActiveEditor().events()
+        expect(palette.eventList.find("td:contains(#{event})")).toExist()

src/extensions/event-palette/event-palette.coffee

@@ -0,0 +1,34 @@
+{View, $$} = require 'space-pen'
+Editor = require 'editor'
+$ = require 'jquery'
+
+module.exports =
+class EventPalette extends View
+  @activate: (rootView) ->
+    requireStylesheet 'event-palette/event-palette.css'
+    @instance = new EventPalette(rootView)
+    rootView.on 'event-palette:show', => @instance.attach()
+
+  @content: ->
+    @div class: 'event-palette', =>
+      @div class: 'event-list', outlet: 'eventList'
+      @subview 'miniEditor', new Editor(mini: true)
+
+  initialize: (@rootView) ->
+
+  attach: ->
+    @previouslyFocusedElement = $(':focus')
+    console.log @pre
+    @populateEventList()
+    @appendTo(@rootView.vertical)
+
+  populateEventList: ->
+    events = @previouslyFocusedElement.events()
+    table = $$ ->
+      @table =>
+        for [event, description] in events
+          @tr =>
+            @td event
+            @td description if description
+
+    @eventList.html(table)

src/extensions/event-palette/event-palette.css

@@ -0,0 +1,5 @@
+.event-palette .event-list {
+  max-height: 300px;
+  color: white;
+  overflow-y: auto;
+}

src/extensions/event-palette/index.coffee

@@ -0,0 +1 @@
+module.exports = require 'event-palette/event-palette'

src/extensions/event-palette/keymap.coffee

@@ -0,0 +1,2 @@
+window.keymap.bindKeys 'body'
+  'ctrl-enter': 'event-palette:show'