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67 lines
1.9 KiB
CoffeeScript
67 lines
1.9 KiB
CoffeeScript
{$} = require './space-pen-extensions'
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_ = require 'underscore-plus'
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fs = require 'fs-plus'
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{specificity} = require 'clear-cut'
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PEG = require 'pegjs'
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### Internal ###
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module.exports =
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class BindingSet
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@parser: null
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selector: null
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commandsByKeystrokes: null
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parser: null
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name: null
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constructor: (selector, commandsByKeystrokes, @index, @name) ->
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keystrokePattern = fs.readFileSync(require.resolve('./keystroke-pattern.pegjs'), 'utf8')
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BindingSet.parser ?= PEG.buildParser(keystrokePattern)
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@specificity = specificity(selector)
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@selector = selector.replace(/!important/g, '')
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@commandsByKeystrokes = @normalizeCommandsByKeystrokes(commandsByKeystrokes)
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# Private:
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getName: ->
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@name
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# Private:
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getSelector: ->
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@selector
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# Private:
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getCommandsByKeystrokes: ->
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@commandsByKeystrokes
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commandForEvent: (event) ->
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for keystrokes, command of @commandsByKeystrokes
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return command if event.keystrokes == keystrokes
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null
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matchesKeystrokePrefix: (event) ->
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eventKeystrokes = event.keystrokes.split(' ')
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for keystrokes, command of @commandsByKeystrokes
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bindingKeystrokes = keystrokes.split(' ')
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continue unless eventKeystrokes.length < bindingKeystrokes.length
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return true if _.isEqual(eventKeystrokes, bindingKeystrokes[0...eventKeystrokes.length])
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false
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normalizeCommandsByKeystrokes: (commandsByKeystrokes) ->
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normalizedCommandsByKeystrokes = {}
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for keystrokes, command of commandsByKeystrokes
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normalizedCommandsByKeystrokes[@normalizeKeystrokes(keystrokes)] = command
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normalizedCommandsByKeystrokes
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normalizeKeystrokes: (keystrokes) ->
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normalizedKeystrokes = keystrokes.split(/\s+/).map (keystroke) =>
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@normalizeKeystroke(keystroke)
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normalizedKeystrokes.join(' ')
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normalizeKeystroke: (keystroke) ->
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keys = BindingSet.parser.parse(keystroke)
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modifiers = keys[0...-1]
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modifiers.sort()
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[modifiers..., _.last(keys)].join('-')
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