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[rbdr/dotfiles] / atom / packages / vim-mode-visual-block / lib / main.coffee
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1_ = require 'underscore-plus'
2{CompositeDisposable} = require 'atom'
3
4Config =
5 debug:
6 type: 'boolean'
7 default: false
8
9module.exports =
10 disposables: null
11 active: false
12 prefix: 'vim-mode-visual-block'
13
14 activate: (state) ->
15 @disposables = new CompositeDisposable
16 blockwiseCommands = {}
455f099b 17 commands = 'jkoDCIA'.split('')
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18 commands.push 'escape', 'ctrl-v'
19 for command in commands
20 do (command) =>
21 name = "#{@prefix}:#{command}"
22 blockwiseCommands[name] = (event) => @blockOperation(event, command)
23
455f099b 24 # blockwiseCommands["#{@prefix}:toggle-debug"] = => @toggleDebug()
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25 @disposables.add atom.commands.add('atom-text-editor', blockwiseCommands)
26 @reset()
27
28 deactivate: ->
29 @disposables.dispose()
30
31 consumeVimMode: (@vimModeService) ->
32
33 reset: ->
34 @startRow = null
35
36 getEditor: ->
37 atom.workspace.getActiveTextEditor()
38
39 isVisualBlockMode: (vimState) ->
40 (vimState.mode is 'visual') and (vimState.submode is 'blockwise')
41
42 getVimEditorState: (editor) ->
43 @vimModeService.getEditorState editor
44
45 adjustSelections: (editor, options) ->
46 for selection in editor.getSelections()
47 range = selection.getBufferRange()
48 selection.setBufferRange range, options
49
50 blockOperation: (event, command) ->
51 editor = @getEditor()
52 vimState = @getVimEditorState editor
53
54 unless @isVisualBlockMode vimState
55 event.abortKeyBinding()
56 @reset()
57 return
58
59 # May be non-continuous execution.
60 if editor.getCursors().length is 1
61 @reset()
62
63 currentRow = editor.getLastCursor()?.getBufferRow()
64 @startRow ?= currentRow
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65
66 switch command
67 when 'o'
68 @startRow = currentRow
69 when 'D', 'C'
455f099b 70 vimState.activateNormalMode()
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71 event.abortKeyBinding()
72 when 'escape', 'ctrl-v'
455f099b 73 vimState.activateNormalMode()
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74 editor.clearSelections()
75 when 'j', 'k'
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76 cursors = editor.getCursorsOrderedByBufferPosition()
77 cursorTop = _.first cursors
78 cursorBottom = _.last cursors
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79
80 if (command is 'j' and cursorTop.getBufferRow() >= @startRow) or
81 (command is 'k' and cursorBottom.getBufferRow() <= @startRow)
82 lastSelection = editor.getLastSelection()
83
84 if command is 'j'
85 editor.addSelectionBelow()
86 else
87 editor.addSelectionAbove()
88
89 # [FIXME]
90 # When addSelectionAbove(), addSelectionBelow() doesn't respect
91 # reversed stated, need improved.
92 #
93 # and one more..
94 #
95 # When selection is NOT empty and add selection by addSelectionAbove()
96 # and then move right, selection range got wrong, maybe this is bug..
97 @adjustSelections editor, reversed: lastSelection.isReversed()
98 else
99 # [FIXME]
100 # Guard to not destroying last cursor
101 # This guard is no longer needed
102 # Remove unnecessary code after re-think.
103 if (editor.getCursors().length < 2)
104 @reset()
105 return
106
107 if command is 'j'
108 cursorTop.destroy()
109 else
110 cursorBottom.destroy()
111 when 'I', 'A'
112 cursorsAdjusted = []
113
114 adjustCursor = (selection) ->
115 {start, end} = selection.getBufferRange()
116 pointEndOfLine = editor.bufferRangeForBufferRow(start.row).end
117 pointTarget = {'I': start, 'A': end}[command]
118 {cursor} = selection
119
120 if pointTarget.isGreaterThanOrEqual(pointEndOfLine)
121 pointTarget = pointEndOfLine
122 cursorsAdjusted.push cursor
123 cursor.setBufferPosition(pointTarget)
124
125 adjustCursor(selection) for selection in editor.getSelections()
455f099b 126 vimState.activateNormalMode()
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127 vimState.activateInsertMode()
128
129 if command is 'A' and cursorsAdjusted.length
130 cursor.moveRight() for cursor in cursorsAdjusted
131
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132 unless @isVisualBlockMode vimState
133 @reset()
134
135 toggleDebug: ->
136 oldState = atom.config.get("#{@prefix}.debug")
137 atom.config.set("#{@prefix}.debug", not oldState)
138 state = atom.config.get("#{@prefix}.debug") and "enabled" or "disabled"
139 console.log "#{@prefix}: debug #{state}"
140
141 debug: (msg) ->
142 return unless atom.config.get("#{@prefix}.debug")
143 console.log msg
144
145 # dump: ->
146 # @debug "@startRow = #{@startRow}"