Files
atom/src/app/editor.coffee
2012-05-16 14:03:26 -06:00

742 lines
25 KiB
CoffeeScript

{View, $$} = require 'space-pen'
Buffer = require 'buffer'
CompositeCursor = require 'composite-cursor'
CompositeSelection = require 'composite-selection'
Gutter = require 'gutter'
Renderer = require 'renderer'
Point = require 'point'
Range = require 'range'
$ = require 'jquery'
_ = require 'underscore'
module.exports =
class Editor extends View
@idCounter: 1
@content: (params) ->
@div class: @classes(params), tabindex: -1, =>
@input class: 'hidden-input', outlet: 'hiddenInput'
@div class: 'flexbox', =>
@subview 'gutter', new Gutter
@div class: 'scroll-view', outlet: 'scrollView', =>
@div class: 'lines', outlet: 'lines', =>
@div class: 'vertical-scrollbar', outlet: 'verticalScrollbar', =>
@div outlet: 'verticalScrollbarContent'
@classes: ({mini}) ->
classes = ['editor']
classes.push 'mini' if mini
classes.join(' ')
vScrollMargin: 2
hScrollMargin: 10
softWrap: false
lineHeight: null
charWidth: null
charHeight: null
cursor: null
selection: null
buffer: null
highlighter: null
renderer: null
autoIndent: null
lineCache: null
isFocused: false
softTabs: true
tabText: ' '
editSessions: null
attached: false
@deserialize: (viewState, rootView) ->
viewState = _.clone(viewState)
viewState.editSessions = viewState.editSessions.map (editSession) ->
editSession = _.clone(editSession)
editSession.buffer = Buffer.deserialize(editSession.buffer, rootView.project)
editSession
new Editor(viewState)
initialize: ({editSessions, activeEditSessionIndex, buffer, isFocused, @mini}) ->
requireStylesheet 'editor.css'
requireStylesheet 'theme/twilight.css'
@id = Editor.idCounter++
@bindKeys()
@autoIndent = true
@buildCursorAndSelection()
@handleEvents()
@editSessions = editSessions ? []
if activeEditSessionIndex?
@loadEditSession(activeEditSessionIndex)
else if buffer?
@setBuffer(buffer)
else
@setBuffer(new Buffer)
@isFocused = isFocused if isFocused?
serialize: ->
@saveCurrentEditSession()
{ viewClass: "Editor", editSessions: @serializeEditSessions(), @activeEditSessionIndex, @isFocused }
serializeEditSessions: ->
@editSessions.map (session) ->
session = _.clone(session)
session.buffer = session.buffer.serialize()
session
copy: ->
Editor.deserialize(@serialize(), @rootView())
bindKeys: ->
editorBindings =
'save': @save
'move-right': @moveCursorRight
'move-left': @moveCursorLeft
'move-down': @moveCursorDown
'move-up': @moveCursorUp
'move-to-next-word': @moveCursorToNextWord
'move-to-previous-word': @moveCursorToPreviousWord
'select-right': @selectRight
'select-left': @selectLeft
'select-up': @selectUp
'select-down': @selectDown
'newline': @insertNewline
'tab': @insertTab
'indent-selected-rows': @indentSelectedRows
'outdent-selected-rows': @outdentSelectedRows
'backspace': @backspace
'backspace-to-beginning-of-word': @backspaceToBeginningOfWord
'delete': @delete
'delete-to-end-of-word': @deleteToEndOfWord
'cut-to-end-of-line': @cutToEndOfLine
'cut': @cutSelection
'copy': @copySelection
'paste': @paste
'undo': @undo
'redo': @redo
'toggle-soft-wrap': @toggleSoftWrap
'fold-selection': @foldSelection
'split-left': @splitLeft
'split-right': @splitRight
'split-up': @splitUp
'split-down': @splitDown
'close': @close
'show-next-buffer': @loadNextEditSession
'show-previous-buffer': @loadPreviousEditSession
'move-to-top': @moveCursorToTop
'move-to-bottom': @moveCursorToBottom
'move-to-beginning-of-line': @moveCursorToBeginningOfLine
'move-to-end-of-line': @moveCursorToEndOfLine
'move-to-first-character-of-line': @moveCursorToFirstCharacterOfLine
'move-to-beginning-of-word': @moveCursorToBeginningOfWord
'move-to-end-of-word': @moveCursorToEndOfWord
'select-to-top': @selectToTop
'select-to-bottom': @selectToBottom
'select-to-end-of-line': @selectToEndOfLine
'select-to-beginning-of-line': @selectToBeginningOfLine
'select-to-end-of-word': @selectToEndOfWord
'select-to-beginning-of-word': @selectToBeginningOfWord
'select-all': @selectAll
for name, method of editorBindings
do (name, method) =>
@on name, => method.call(this); false
buildCursorAndSelection: ->
@compositeSelection = new CompositeSelection(this)
@compositeCursor = new CompositeCursor(this)
addCursorAtScreenPosition: (screenPosition) ->
@compositeCursor.addCursorAtScreenPosition(screenPosition)
addCursorAtBufferPosition: (bufferPosition) ->
@compositeCursor.addCursorAtBufferPosition(bufferPosition)
addSelectionForCursor: (cursor) ->
@compositeSelection.addSelectionForCursor(cursor)
handleEvents: ->
@on 'focus', =>
@hiddenInput.focus()
false
@hiddenInput.on 'focus', =>
@rootView()?.editorFocused(this)
@isFocused = true
@addClass 'focused'
@hiddenInput.on 'focusout', =>
@isFocused = false
@removeClass 'focused'
@lines.on 'mousedown', '.fold-placeholder', (e) =>
@destroyFold($(e.currentTarget).attr('foldId'))
false
@lines.on 'mousedown', (e) =>
clickCount = e.originalEvent.detail
if clickCount == 1
screenPosition = @screenPositionFromMouseEvent(e)
if e.metaKey
@addCursorAtScreenPosition(screenPosition)
else if e.shiftKey
@selectToScreenPosition(@screenPositionFromMouseEvent(e))
else
@setCursorScreenPosition(screenPosition)
else if clickCount == 2
if e.shiftKey
@compositeSelection.getLastSelection().expandOverWord()
else
@compositeSelection.getLastSelection().selectWord()
else if clickCount >= 3
if e.shiftKey
@compositeSelection.getLastSelection().expandOverLine()
else
@compositeSelection.getLastSelection().selectLine()
@selectOnMousemoveUntilMouseup()
@on "textInput", (e) =>
@insertText(e.originalEvent.data)
false
@scrollView.on 'mousewheel', (e) =>
e = e.originalEvent
if e.wheelDeltaY
newEvent = document.createEvent("WheelEvent");
newEvent.initWebKitWheelEvent(0, e.wheelDeltaY, e.view, e.screenX, e.screenY, e.clientX, e.clientY, e.ctrlKey, e.altKey, e.shiftKey, e.metaKey)
@verticalScrollbar.get(0).dispatchEvent(newEvent)
false
@verticalScrollbar.on 'scroll', =>
@scrollTop(@verticalScrollbar.scrollTop(), adjustVerticalScrollbar: false)
@scrollView.on 'scroll', =>
if @scrollView.scrollLeft() == 0
@gutter.removeClass('drop-shadow')
else
@gutter.addClass('drop-shadow')
$(window).on "resize", =>
@updateVisibleLines()
afterAttach: (onDom) ->
return if @attached or not onDom
@attached = true
@subscribeToFontSize()
@calculateDimensions()
@setMaxLineLength() if @softWrap
@prepareForVerticalScrolling()
@setScrollPositionFromActiveEditSession()
@renderVisibleLines()
# TODO: The redundant assignment of scrollLeft below is needed because the lines weren't render
# rendered when we called setScrollPositionFromActiveEditSession above. Remove this when we fix
# that problem by setting the width of the lines container based on the max line width
@scrollView.scrollLeft(@getActiveEditSession().scrollLeft ? 0)
@hiddenInput.width(@charWidth)
@focus() if @isFocused
@trigger 'editor-open', [this]
rootView: ->
@parents('#root-view').view()
selectOnMousemoveUntilMouseup: ->
moveHandler = (e) => @selectToScreenPosition(@screenPositionFromMouseEvent(e))
@on 'mousemove', moveHandler
$(document).one 'mouseup', =>
@off 'mousemove', moveHandler
reverse = @compositeSelection.getLastSelection().isReversed()
@compositeSelection.mergeIntersectingSelections({reverse})
@syncCursorAnimations()
prepareForVerticalScrolling: ->
linesHeight = @lineHeight * @screenLineCount()
@verticalScrollbarContent.height(linesHeight)
@lines.css('padding-bottom', linesHeight)
scrollTop: (scrollTop, options) ->
return @cachedScrollTop or 0 unless scrollTop?
scrollTop = Math.max(0, scrollTop)
return if scrollTop == @cachedScrollTop
@cachedScrollTop = scrollTop
@updateVisibleLines() if @attached
transform = "translate3d(0px, #{-scrollTop}px, 0px)"
@lines.css('-webkit-transform', transform)
@gutter.lineNumbers.css('-webkit-transform', transform)
if options?.adjustVerticalScrollbar ? true
@verticalScrollbar.scrollTop(scrollTop)
scrollBottom: ->
@scrollTop() + @scrollView.height()
renderVisibleLines: ->
@lineCache = []
@lines.find('.line').remove()
@firstRenderedScreenRow = -1
@lastRenderedScreenRow = -1
@updateVisibleLines()
updateVisibleLines: ->
firstVisibleScreenRow = @getFirstVisibleScreenRow()
lastVisibleScreenRow = @getLastVisibleScreenRow()
@gutter.renderLineNumbers(firstVisibleScreenRow, lastVisibleScreenRow)
if firstVisibleScreenRow > @firstRenderedScreenRow
@removeLineElements(@firstRenderedScreenRow, firstVisibleScreenRow - 1)
if lastVisibleScreenRow < @lastRenderedScreenRow
@removeLineElements(lastVisibleScreenRow + 1, @lastRenderedScreenRow)
if firstVisibleScreenRow < @firstRenderedScreenRow
newLinesStartRow = firstVisibleScreenRow
newLinesEndRow = Math.min(@firstRenderedScreenRow - 1, lastVisibleScreenRow)
lineElements = @buildLineElements(newLinesStartRow, newLinesEndRow)
@insertLineElements(newLinesStartRow, lineElements)
if lastVisibleScreenRow > @lastRenderedScreenRow
newLinesStartRow = Math.max(@lastRenderedScreenRow + 1, firstVisibleScreenRow)
newLinesEndRow = lastVisibleScreenRow
lineElements = @buildLineElements(newLinesStartRow, newLinesEndRow)
@insertLineElements(newLinesStartRow, lineElements)
if firstVisibleScreenRow != @firstRenderedScreenRow
paddingTop = firstVisibleScreenRow * @lineHeight
@lines.css('padding-top', paddingTop)
@gutter.lineNumbers.css('padding-top', paddingTop)
@firstRenderedScreenRow = firstVisibleScreenRow
if lastVisibleScreenRow != @lastRenderedScreenRow
paddingBottom = (@getLastScreenRow() - lastVisibleScreenRow) * @lineHeight
@lines.css('padding-bottom', paddingBottom)
@gutter.lineNumbers.css('padding-bottom', paddingBottom)
@lastRenderedScreenRow = lastVisibleScreenRow
getFirstVisibleScreenRow: ->
Math.floor(@scrollTop() / @lineHeight)
getLastVisibleScreenRow: ->
Math.ceil((@scrollTop() + @scrollView.height()) / @lineHeight) - 1
getScreenLines: ->
@renderer.getLines()
linesForRows: (start, end) ->
@renderer.linesForRows(start, end)
screenLineCount: ->
@renderer.lineCount()
getLastScreenRow: ->
@screenLineCount() - 1
setBuffer: (buffer) ->
if @buffer
@saveCurrentEditSession()
@unsubscribeFromBuffer()
@buffer = buffer
@trigger 'editor-path-change'
@buffer.on "path-change.editor#{@id}", => @trigger 'editor-path-change'
@renderer = new Renderer(@buffer, { maxLineLength: @calcMaxLineLength(), tabText: @tabText })
if @attached
@prepareForVerticalScrolling()
@renderVisibleLines()
@loadEditSessionForBuffer(@buffer)
@buffer.on "change.editor#{@id}", (e) => @handleBufferChange(e)
@renderer.on 'change', (e) => @handleRendererChange(e)
editSessionForBuffer: (buffer) ->
for editSession, index in @editSessions
return [editSession, index] if editSession.buffer == buffer
[undefined, -1]
loadEditSessionForBuffer: (buffer) ->
[editSession, index] = @editSessionForBuffer(buffer)
if editSession
@activeEditSessionIndex = index
else
@editSessions.push({ buffer })
@activeEditSessionIndex = @editSessions.length - 1
@loadEditSession()
loadNextEditSession: ->
nextIndex = (@activeEditSessionIndex + 1) % @editSessions.length
@loadEditSession(nextIndex)
loadPreviousEditSession: ->
previousIndex = @activeEditSessionIndex - 1
previousIndex = @editSessions.length - 1 if previousIndex < 0
@loadEditSession(previousIndex)
loadEditSession: (index=@activeEditSessionIndex) ->
editSession = @editSessions[index]
throw new Error("Edit session not found") unless editSession
@setBuffer(editSession.buffer) unless @buffer == editSession.buffer
@activeEditSessionIndex = index
@setScrollPositionFromActiveEditSession() if @attached
@setCursorScreenPosition(editSession.cursorScreenPosition ? [0, 0])
getActiveEditSession: ->
@editSessions[@activeEditSessionIndex]
setScrollPositionFromActiveEditSession: ->
editSession = @getActiveEditSession()
@scrollTop(editSession.scrollTop ? 0)
@scrollView.scrollLeft(editSession.scrollLeft ? 0)
saveCurrentEditSession: ->
@editSessions[@activeEditSessionIndex] =
buffer: @buffer
cursorScreenPosition: @getCursorScreenPosition()
scrollTop: @scrollTop()
scrollLeft: @scrollView.scrollLeft()
handleBufferChange: (e) ->
@compositeCursor.handleBufferChange(e)
@compositeSelection.handleBufferChange(e)
handleRendererChange: (e) ->
oldScreenRange = e.oldRange
newScreenRange = e.newRange
@compositeCursor.updateBufferPosition() unless e.bufferChanged
if @attached
unless newScreenRange.isSingleLine() and newScreenRange.coversSameRows(oldScreenRange)
@gutter.renderLineNumbers(@getFirstVisibleScreenRow(), @getLastVisibleScreenRow())
lineElements = @buildLineElements(newScreenRange.start.row, newScreenRange.end.row)
@replaceLineElements(oldScreenRange.start.row, oldScreenRange.end.row, lineElements)
@verticalScrollbarContent.height(@lineHeight * @screenLineCount())
rowDelta = newScreenRange.end.row - oldScreenRange.end.row
@lastRenderedScreenRow += rowDelta
@updateVisibleLines() if rowDelta < 0
buildLineElements: (startRow, endRow) ->
charWidth = @charWidth
charHeight = @charHeight
lines = @renderer.linesForRows(startRow, endRow)
$$ ->
for line in lines
@div class: 'line', =>
appendNbsp = true
for token in line.tokens
if token.type is 'fold-placeholder'
@span ' ', class: 'fold-placeholder', style: "width: #{3 * charWidth}px; height: #{charHeight}px;", 'foldId': token.fold.id, =>
@div class: "ellipsis", => @raw "&hellip;"
else
appendNbsp = false
@span { class: token.type.replace('.', ' ') }, token.value
@raw '&nbsp;' if appendNbsp
insertLineElements: (row, lineElements) ->
@spliceLineElements(row, 0, lineElements)
replaceLineElements: (startRow, endRow, lineElements) ->
@spliceLineElements(startRow, endRow - startRow + 1, lineElements)
removeLineElements: (startRow, endRow) ->
@spliceLineElements(startRow, endRow - startRow + 1)
spliceLineElements: (startScreenRow, rowCount, lineElements) ->
if startScreenRow < @firstRenderedScreenRow
startRow = 0
else
startRow = startScreenRow - @firstRenderedScreenRow
endRow = startRow + rowCount
elementToInsertBefore = @lineCache[startRow]
elementsToReplace = @lineCache[startRow...endRow]
@lineCache[startRow...endRow] = lineElements?.toArray() or []
lines = @lines[0]
if lineElements
fragment = document.createDocumentFragment()
lineElements.each -> fragment.appendChild(this)
if elementToInsertBefore
lines.insertBefore(fragment, elementToInsertBefore)
else
lines.appendChild(fragment)
elementsToReplace.forEach (element) =>
lines.removeChild(element)
getLineElement: (row) ->
@lineCache[row]
toggleSoftWrap: ->
@setSoftWrap(not @softWrap)
calcMaxLineLength: ->
if @softWrap
Math.floor(@scrollView.width() / @charWidth)
else
Infinity
setMaxLineLength: (maxLineLength) ->
maxLineLength ?= @calcMaxLineLength()
@renderer.setMaxLineLength(maxLineLength) if maxLineLength
createFold: (range) ->
@renderer.createFold(range)
setSoftWrap: (@softWrap, maxLineLength=undefined) ->
@setMaxLineLength(maxLineLength) if @attached
if @softWrap
@addClass 'soft-wrap'
@_setMaxLineLength = => @setMaxLineLength()
$(window).on 'resize', @_setMaxLineLength
else
@removeClass 'soft-wrap'
$(window).off 'resize', @_setMaxLineLength
save: ->
if not @buffer.getPath()
path = $native.saveDialog()
return if not path
@buffer.saveAs(path)
else
@buffer.save()
clipScreenPosition: (screenPosition, options={}) ->
@renderer.clipScreenPosition(screenPosition, options)
pixelPositionForScreenPosition: (position) ->
position = Point.fromObject(position)
{ top: position.row * @lineHeight, left: position.column * @charWidth }
pixelOffsetForScreenPosition: (position) ->
{top, left} = @pixelPositionForScreenPosition(position)
offset = @lines.offset()
{top: top + offset.top, left: left + offset.left}
screenPositionFromPixelPosition: ({top, left}) ->
screenPosition = new Point(Math.floor(top / @lineHeight), Math.floor(left / @charWidth))
screenPositionForBufferPosition: (position, options) ->
@renderer.screenPositionForBufferPosition(position, options)
bufferPositionForScreenPosition: (position, options) ->
@renderer.bufferPositionForScreenPosition(position, options)
screenRangeForBufferRange: (range) ->
@renderer.screenRangeForBufferRange(range)
bufferRangeForScreenRange: (range) ->
@renderer.bufferRangeForScreenRange(range)
bufferRowsForScreenRows: (startRow, endRow) ->
@renderer.bufferRowsForScreenRows(startRow, endRow)
screenPositionFromMouseEvent: (e) ->
{ pageX, pageY } = e
@screenPositionFromPixelPosition
top: pageY - @scrollView.offset().top + @scrollTop()
left: pageX - @scrollView.offset().left + @scrollView.scrollLeft()
calculateDimensions: ->
fragment = $('<div class="line" style="position: absolute; visibility: hidden;"><span>x</span></div>')
@lines.append(fragment)
@charWidth = fragment.width()
@charHeight = fragment.find('span').height()
@lineHeight = fragment.outerHeight()
@height(@lineHeight) if @mini
fragment.remove()
subscribeToFontSize: ->
return unless rootView = @rootView()
@setFontSize(rootView.getFontSize())
rootView.on "font-size-change.editor#{@id}", =>
@setFontSize(rootView.getFontSize())
@calculateDimensions()
@compositeCursor.updateAppearance()
setFontSize: (fontSize) ->
@css('font-size', fontSize + 'px') if fontSize
getCursors: -> @compositeCursor.getCursors()
moveCursorUp: -> @compositeCursor.moveUp()
moveCursorDown: -> @compositeCursor.moveDown()
moveCursorRight: -> @compositeCursor.moveRight()
moveCursorLeft: -> @compositeCursor.moveLeft()
moveCursorToNextWord: -> @compositeCursor.moveToNextWord()
moveCursorToBeginningOfWord: -> @compositeCursor.moveToBeginningOfWord()
moveCursorToEndOfWord: -> @compositeCursor.moveToEndOfWord()
moveCursorToTop: -> @compositeCursor.moveToTop()
moveCursorToBottom: -> @compositeCursor.moveToBottom()
moveCursorToBeginningOfLine: -> @compositeCursor.moveToBeginningOfLine()
moveCursorToFirstCharacterOfLine: -> @compositeCursor.moveToFirstCharacterOfLine()
moveCursorToEndOfLine: -> @compositeCursor.moveToEndOfLine()
setCursorScreenPosition: (position) -> @compositeCursor.setScreenPosition(position)
getCursorScreenPosition: -> @compositeCursor.getCursor().getScreenPosition()
setCursorBufferPosition: (position) -> @compositeCursor.setBufferPosition(position)
getCursorBufferPosition: -> @compositeCursor.getCursor().getBufferPosition()
getSelection: (index) -> @compositeSelection.getSelection(index)
getSelections: -> @compositeSelection.getSelections()
getSelectionsOrderedByBufferPosition: -> @compositeSelection.getSelectionsOrderedByBufferPosition()
getLastSelectionInBuffer: -> @compositeSelection.getLastSelectionInBuffer()
getSelectedText: -> @compositeSelection.getSelection().getText()
setSelectionBufferRange: (bufferRange, options) -> @compositeSelection.setBufferRange(bufferRange, options)
setSelectedBufferRanges: (bufferRanges) -> @compositeSelection.setBufferRanges(bufferRanges)
addSelectionForBufferRange: (bufferRange, options) -> @compositeSelection.addSelectionForBufferRange(bufferRange, options)
selectRight: -> @compositeSelection.selectRight()
selectLeft: -> @compositeSelection.selectLeft()
selectUp: -> @compositeSelection.selectUp()
selectDown: -> @compositeSelection.selectDown()
selectToTop: -> @compositeSelection.selectToTop()
selectToBottom: -> @compositeSelection.selectToBottom()
selectAll: -> @compositeSelection.selectAll()
selectToBeginningOfLine: -> @compositeSelection.selectToBeginningOfLine()
selectToEndOfLine: -> @compositeSelection.selectToEndOfLine()
selectToBeginningOfWord: -> @compositeSelection.selectToBeginningOfWord()
selectToEndOfWord: -> @compositeSelection.selectToEndOfWord()
selectToScreenPosition: (position) -> @compositeSelection.selectToScreenPosition(position)
clearSelections: -> @compositeSelection.clearSelections()
backspace: -> @compositeSelection.backspace()
backspaceToBeginningOfWord: -> @compositeSelection.backspaceToBeginningOfWord()
delete: -> @compositeSelection.delete()
deleteToEndOfWord: -> @compositeSelection.deleteToEndOfWord()
cutToEndOfLine: -> @compositeSelection.cutToEndOfLine()
setText: (text) -> @buffer.setText(text)
getText: -> @buffer.getText()
getLastBufferRow: -> @buffer.getLastRow()
getTextInRange: (range) -> @buffer.getTextInRange(range)
getEofPosition: -> @buffer.getEofPosition()
lineForBufferRow: (row) -> @buffer.lineForRow(row)
lineLengthForBufferRow: (row) -> @buffer.lineLengthForRow(row)
rangeForBufferRow: (row) -> @buffer.rangeForRow(row)
scanInRange: (args...) -> @buffer.scanInRange(args...)
backwardsScanInRange: (args...) -> @buffer.backwardsScanInRange(args...)
insertText: (text) ->
@compositeSelection.insertText(text)
insertNewline: ->
@insertText('\n')
insertTab: ->
if @getSelection().isEmpty()
if @softTabs
@compositeSelection.insertText(@tabText)
else
@compositeSelection.insertText('\t')
else
@compositeSelection.indentSelectedRows()
indentSelectedRows: -> @compositeSelection.indentSelectedRows()
outdentSelectedRows: -> @compositeSelection.outdentSelectedRows()
cutSelection: -> @compositeSelection.cut()
copySelection: -> @compositeSelection.copy()
paste: -> @insertText($native.readFromPasteboard())
foldSelection: -> @getSelection().fold()
undo: ->
if ranges = @buffer.undo()
@setSelectedBufferRanges(ranges)
redo: ->
if ranges = @buffer.redo()
@setSelectedBufferRanges(ranges)
destroyFold: (foldId) ->
fold = @renderer.foldsById[foldId]
fold.destroy()
@setCursorBufferPosition(fold.start)
splitLeft: ->
@pane()?.splitLeft(@copy()).wrappedView
splitRight: ->
@pane()?.splitRight(@copy()).wrappedView
splitUp: ->
@pane()?.splitUp(@copy()).wrappedView
splitDown: ->
@pane()?.splitDown(@copy()).wrappedView
pane: ->
@parent('.pane').view()
close: ->
@remove() unless @mini
remove: (selector, keepData) ->
return super if keepData
@trigger 'before-remove'
@unsubscribeFromBuffer()
rootView = @rootView()
rootView?.off ".editor#{@id}"
if @pane() then @pane().remove() else super
rootView?.focus()
unsubscribeFromBuffer: ->
@buffer.off ".editor#{@id}"
@renderer.destroy()
stateForScreenRow: (row) ->
@renderer.lineForRow(row).state
getCurrentMode: ->
@buffer.getMode()
scrollTo: (pixelPosition) ->
return unless @attached
@scrollVertically(pixelPosition)
@scrollHorizontally(pixelPosition)
scrollVertically: (pixelPosition) ->
linesInView = @scrollView.height() / @lineHeight
maxScrollMargin = Math.floor((linesInView - 1) / 2)
scrollMargin = Math.min(@vScrollMargin, maxScrollMargin)
margin = scrollMargin * @lineHeight
desiredTop = pixelPosition.top - margin
desiredBottom = pixelPosition.top + @lineHeight + margin
scrollViewHeight = @scrollView.height()
if desiredBottom > @scrollTop() + scrollViewHeight
@scrollTop(desiredBottom - scrollViewHeight)
else if desiredTop < @scrollTop()
@scrollTop(desiredTop)
scrollHorizontally: (pixelPosition) ->
return if @softWrap
charsInView = @scrollView.width() / @charWidth
maxScrollMargin = Math.floor((charsInView - 1) / 2)
scrollMargin = Math.min(@hScrollMargin, maxScrollMargin)
margin = scrollMargin * @charWidth
desiredRight = pixelPosition.left + @charWidth + margin
desiredLeft = pixelPosition.left - margin
if desiredRight > @scrollView.scrollRight()
@scrollView.scrollRight(desiredRight)
else if desiredLeft < @scrollView.scrollLeft()
@scrollView.scrollLeft(desiredLeft)
syncCursorAnimations: ->
for cursor in @getCursors()
do (cursor) -> cursor.resetCursorAnimation()
logLines: ->
@renderer.logLines()