72 lines
1.8 KiB
CoffeeScript
72 lines
1.8 KiB
CoffeeScript
{Emitter, Disposable, CompositeDisposable} = require 'event-kit'
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Command = require './command'
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CommandError = require './command-error'
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class ExState
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constructor: (@editorElement, @globalExState) ->
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@emitter = new Emitter
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@subscriptions = new CompositeDisposable
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@editor = @editorElement.getModel()
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@opStack = []
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@history = []
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@registerOperationCommands
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open: (e) => new Command(@editor, @)
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destroy: ->
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@subscriptions.dispose()
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getExHistoryItem: (index) ->
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@globalExState.commandHistory[index]
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pushExHistory: (command) ->
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@globalExState.commandHistory.unshift command
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registerOperationCommands: (commands) ->
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for commandName, fn of commands
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do (fn) =>
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pushFn = (e) => @pushOperations(fn(e))
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@subscriptions.add(
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atom.commands.add(@editorElement, "ex-mode:#{commandName}", pushFn)
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)
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onDidFailToExecute: (fn) ->
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@emitter.on('failed-to-execute', fn)
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onDidProcessOpStack: (fn) ->
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@emitter.on('processed-op-stack', fn)
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pushOperations: (operations) ->
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@opStack.push operations
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@processOpStack() if @opStack.length == 2
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clearOpStack: ->
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@opStack = []
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processOpStack: ->
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[command, input] = @opStack
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if input.characters.length > 0
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@history.unshift command
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try
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command.execute(input)
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catch e
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if (e instanceof CommandError)
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atom.notifications.addError("Command error: #{e.message}")
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@emitter.emit('failed-to-execute')
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else
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throw e
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@clearOpStack()
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@emitter.emit('processed-op-stack')
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# Returns all non-empty selections
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getSelections: ->
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filtered = {}
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for id, selection of @editor.getSelections()
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unless (selection.isEmpty && selection.isEmpty())
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filtered[id] = selection
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return filtered
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module.exports = ExState
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