Ctrl-enter toggles event palette (hides when showing)

I changed the event name to event-palette:toggle because ctrl-enter
should hide the event palette when it is showing. Previously that
broke, because we would try to re-show the event palette.

spec/extensions/event-palette-spec.coffee

@@ -11,12 +11,12 @@ describe "EventPalette", ->
     rootView.activateExtension(EventPalette)
     palette = EventPalette.instance
     rootView.attachToDom().focus()
-    rootView.trigger 'event-palette:show'
+    rootView.trigger 'event-palette:toggle'
 
   afterEach ->
     rootView.remove()
 
-  describe "when event-palette:show is triggered on the root view", ->
+  describe "when event-palette:toggle is triggered on the root view", ->
     it "shows a list of all valid events for the previously focused element, then focuses the mini-editor and selects the first event", ->
       for [event, description] in rootView.getActiveEditor().events()
         expect(palette.list.find(".event:contains(#{event})")).toExist()
@@ -24,6 +24,13 @@ describe "EventPalette", ->
       expect(palette.miniEditor.isFocused).toBeTruthy()
       expect(palette.find('.event:first')).toHaveClass 'selected'
 
+  describe "when event-palette:toggle is triggered on the open event palette", ->
+    it "focus the root view and detaches the event palette", ->
+      expect(palette.hasParent()).toBeTruthy()
+      palette.trigger 'event-palette:toggle'
+      expect(palette.hasParent()).toBeFalsy()
+      expect(rootView.getActiveEditor().isFocused).toBeTruthy()
+
   describe "when the event palette is cancelled", ->
     it "focuses the root view and detaches the event palette", ->
       expect(palette.hasParent()).toBeTruthy()

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

@@ -8,7 +8,7 @@ class EventPalette extends SelectList
   @activate: (rootView) ->
     requireStylesheet 'event-palette/event-palette.css'
     @instance = new EventPalette(rootView)
-    rootView.on 'event-palette:show', => @instance.attach()
+    rootView.on 'event-palette:toggle', => @instance.attach()
 
   @viewClass: ->
     "#{super} event-palette"
@@ -16,6 +16,7 @@ class EventPalette extends SelectList
   filterKey: 0 # filter on the event name for now
 
   initialize: (@rootView) ->
+    @on 'event-palette:toggle', => @cancel()
     super
 
   attach: ->

src/extensions/event-palette/keymap.coffee

@@ -1,6 +1,5 @@
-window.keymap.bindKeys 'body'
-  'ctrl-enter': 'event-palette:show'
+window.keymap.bindKeys 'body, .event-palette .editor'
+  'ctrl-enter': 'event-palette:toggle'
 
 window.keymap.bindKeys '.event-palette .editor'
-  'enter': 'event-palette:select'
-  'escape': 'event-palette:cancel'
+  'ctrl-enter': 'event-palette:toggle'