Add ability to add/remove keymaps by name

src/app/binding-set.coffee

@@ -14,8 +14,9 @@ class BindingSet
   commandsByKeystrokes: null
   commandForEvent: null
   parser: null
+  name: null
 
-  constructor: (@selector, commandsByKeystrokes, @index) ->
+  constructor: (@selector, commandsByKeystrokes, @index, @name) ->
     BindingSet.parser ?= PEG.buildParser(fs.read(require.resolve 'keystroke-pattern.pegjs'))
     @specificity = Specificity(@selector)
     @commandsByKeystrokes = @normalizeCommandsByKeystrokes(commandsByKeystrokes)

src/app/keymap.coffee

@@ -40,20 +40,39 @@ class Keymap
     @load(filePath) for filePath in fs.list(directoryPath, ['.cson', '.json']) ? []
 
   load: (path) ->
-    @add(CSON.readObject(path))
+    @add(path, CSON.readObject(path))
 
-  add: (keymap) ->
+  add: (args...) ->
+    name = args.shift() if args.length > 1
+    keymap = args.shift()
     for selector, bindings of keymap
-      @bindKeys(selector, bindings)
+      @bindKeys(name, selector, bindings)
 
-  bindKeys: (selector, bindings) ->
-    bindingSet = new BindingSet(selector, bindings, @bindingSets.length)
+  remove: (name) ->
+    for bindingSet in @bindingSets.filter((bindingSet) -> bindingSet.name is name)
+      _.remove(@bindingSets, bindingSet)
+      for keystrokes of bindingSet.commandsByKeystrokes
+        keystroke = keystrokes.split(' ')[0]
+        _.remove(@bindingSetsByFirstKeystroke[keystroke], bindingSet)
+
+  bindKeys: (args...) ->
+    name = args.shift() if args.length > 2
+    [selector, bindings] = args
+    bindingSet = new BindingSet(selector, bindings, @bindingSets.length, name)
     @bindingSets.unshift(bindingSet)
     for keystrokes of bindingSet.commandsByKeystrokes
       keystroke = keystrokes.split(' ')[0] # only index by first keystroke
       @bindingSetsByFirstKeystroke[keystroke] ?= []
       @bindingSetsByFirstKeystroke[keystroke].push(bindingSet)
 
+  unbindKeys: (selector, bindings) ->
+    bindingSet = _.detect @bindingSets, (bindingSet) ->
+      bindingSet.selector is selector and bindingSet.bindings is bindings
+
+    if bindingSet
+      console.log "binding set", bindingSet
+      _.remove(@bindingSets, bindingSet)
+
   bindingsForElement: (element) ->
     keystrokeMap = {}
     currentNode = $(element)