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149 lines
4.4 KiB
CoffeeScript
149 lines
4.4 KiB
CoffeeScript
{View} = require 'space-pen'
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Anchor = require 'anchor'
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Point = require 'point'
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_ = require 'underscore'
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module.exports =
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class Cursor extends View
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@content: ->
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@pre class: 'cursor idle', => @raw ' '
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anchor: null
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editor: null
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wordRegex: /(\w+)|([^\w\s]+)/g
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initialize: ({editor, screenPosition}) ->
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@editor = editor
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@anchor = new Anchor(@editor, screenPosition)
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@selection = @editor.compositeSelection.addSelectionForCursor(this)
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@one 'attach', =>
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@updateAppearance()
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@editor.syncCursorAnimations()
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handleBufferChange: (e) ->
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@anchor.handleBufferChange(e)
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@refreshScreenPosition()
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remove: ->
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@editor.compositeCursor.removeCursor(this)
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@editor.compositeSelection.removeSelectionForCursor(this)
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super
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getBufferPosition: ->
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@anchor.getBufferPosition()
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setBufferPosition: (bufferPosition) ->
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@anchor.setBufferPosition(bufferPosition)
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@refreshScreenPosition()
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@clearSelection()
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getScreenPosition: ->
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@anchor.getScreenPosition()
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setScreenPosition: (position, options={}) ->
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@anchor.setScreenPosition(position, options)
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@refreshScreenPosition(position, options)
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@clearSelection()
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refreshScreenPosition: ->
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@goalColumn = null
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@updateAppearance()
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@trigger 'cursor:position-changed'
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@removeClass 'idle'
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window.clearTimeout(@idleTimeout) if @idleTimeout
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@idleTimeout = window.setTimeout (=> @addClass 'idle'), 200
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resetCursorAnimation: ->
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window.clearTimeout(@idleTimeout) if @idleTimeout
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@removeClass 'idle'
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_.defer => @addClass 'idle'
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clearSelection: ->
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@selection.clearSelection() unless @selection.retainSelection
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getCurrentBufferLine: ->
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@editor.lineForBufferRow(@getBufferPosition().row)
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isOnEOL: ->
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@getScreenPosition().column == @getCurrentBufferLine().length
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moveUp: ->
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{ row, column } = @getScreenPosition()
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column = @goalColumn if @goalColumn?
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@setScreenPosition({row: row - 1, column: column})
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@goalColumn = column
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moveDown: ->
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{ row, column } = @getScreenPosition()
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column = @goalColumn if @goalColumn?
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@setScreenPosition({row: row + 1, column: column})
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@goalColumn = column
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moveToNextWord: ->
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bufferPosition = @getBufferPosition()
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range = [bufferPosition, @editor.getEofPosition()]
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nextPosition = null
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@editor.scanRegexMatchesInRange @wordRegex, range, (match, matchRange, { stop }) =>
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if matchRange.start.isGreaterThan(bufferPosition)
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nextPosition = matchRange.start
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stop()
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@setBufferPosition(nextPosition or @editor.getEofPosition())
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moveToBeginningOfWord: ->
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bufferPosition = @getBufferPosition()
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range = [[0,0], bufferPosition]
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@editor.backwardsTraverseRegexMatchesInRange @wordRegex, range, (match, matchRange, { stop }) =>
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@setBufferPosition matchRange.start
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stop()
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moveToEndOfWord: ->
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bufferPosition = @getBufferPosition()
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range = [bufferPosition, @editor.getEofPosition()]
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@editor.scanRegexMatchesInRange @wordRegex, range, (match, matchRange, { stop }) =>
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@setBufferPosition matchRange.end
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stop()
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moveToEndOfLine: ->
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{ row } = @getBufferPosition()
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@setBufferPosition({ row, column: @editor.buffer.lineForRow(row).length })
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moveToBeginningOfLine: ->
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{ row } = @getScreenPosition()
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@setScreenPosition({ row, column: 0 })
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moveToFirstCharacterOfLine: ->
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position = @getBufferPosition()
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range = @editor.rangeForBufferRow(position.row)
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newPosition = null
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@editor.scanRegexMatchesInRange /^\s*/, range, (match, matchRange) =>
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newPosition = matchRange.end
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newPosition = [position.row, 0] if newPosition.isEqual(position)
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@setBufferPosition(newPosition)
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moveRight: ->
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{ row, column } = @getScreenPosition()
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@setScreenPosition(@editor.clipScreenPosition([row, column + 1], skipAtomicTokens: true, wrapBeyondNewlines: true, wrapAtSoftNewlines: true))
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moveLeft: ->
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{ row, column } = @getScreenPosition()
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[row, column] = if column > 0 then [row, column - 1] else [row - 1, Infinity]
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@setScreenPosition({row, column})
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moveToTop: ->
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@setBufferPosition [0,0]
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moveToBottom: ->
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@setBufferPosition @editor.getEofPosition()
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updateAppearance: ->
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screenPosition = @getScreenPosition()
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pixelPosition = @editor.pixelPositionForScreenPosition(screenPosition)
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@css(pixelPosition)
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if this == _.last(@editor.getCursors())
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@editor.scrollTo(pixelPosition)
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