Files
atom/src/app/edit-session.coffee
Nathan Sobo 0bd98bf8f8 Do a better job cleaning up after Editors and EditSessions
- EditSessions destroy their Selections when they are destroyed
- Editors destroy their EditSessions when they are destroyed
- Editors unsubscribe from the document and window when they are
  removed from the DOM.
- When an EditSession is destroyed via any code path, the Editor with
  that EditSession removes it.
- Selections no longer trigger 'destroyed' events if their parent
  EditSession has already been destroyed.

These are all really intertwined, so I'm doing them as one commit
since that was the only way to keep the specs green.
2013-02-06 16:54:19 -07:00

813 lines
26 KiB
CoffeeScript

Point = require 'point'
Buffer = require 'buffer'
LanguageMode = require 'language-mode'
DisplayBuffer = require 'display-buffer'
Cursor = require 'cursor'
Selection = require 'selection'
EventEmitter = require 'event-emitter'
Subscriber = require 'subscriber'
Range = require 'range'
_ = require 'underscore'
fs = require 'fs'
module.exports =
class EditSession
@deserialize: (state, project) ->
if fs.exists(state.buffer)
session = project.buildEditSessionForPath(state.buffer)
else
console.warn "Could not build edit session for path '#{state.buffer}' because that file no longer exists" if state.buffer
session = project.buildEditSessionForPath(null)
session.setScrollTop(state.scrollTop)
session.setScrollLeft(state.scrollLeft)
session.setCursorScreenPosition(state.cursorScreenPosition)
session
scrollTop: 0
scrollLeft: 0
languageMode: null
displayBuffer: null
cursors: null
selections: null
softTabs: true
softWrap: false
constructor: ({@project, @buffer, tabLength, softTabs, @softWrap }) ->
@softTabs = @buffer.usesSoftTabs() ? softTabs ? true
@languageMode = new LanguageMode(this, @buffer.getExtension())
@displayBuffer = new DisplayBuffer(@buffer, { @languageMode, tabLength })
@cursors = []
@selections = []
@addCursorAtScreenPosition([0, 0])
@buffer.retain()
@subscribe @buffer, "path-changed", => @trigger "path-changed"
@subscribe @buffer, "contents-conflicted", => @trigger "contents-conflicted"
@subscribe @buffer, "markers-updated", => @mergeCursors()
@preserveCursorPositionOnBufferReload()
@subscribe @displayBuffer, "changed", (e) =>
@trigger 'screen-lines-changed', e
destroy: ->
throw new Error("Edit session already destroyed") if @destroyed
@destroyed = true
@unsubscribe()
@buffer.release()
selection.destroy() for selection in @getSelections()
@displayBuffer.destroy()
@project?.removeEditSession(this)
@trigger 'destroyed'
@off()
serialize: ->
buffer: @buffer.getPath()
scrollTop: @getScrollTop()
scrollLeft: @getScrollLeft()
cursorScreenPosition: @getCursorScreenPosition().serialize()
copy: ->
EditSession.deserialize(@serialize(), @project)
isEqual: (other) ->
return false unless other instanceof EditSession
@buffer == other.buffer and
@scrollTop == other.getScrollTop() and
@scrollLeft == other.getScrollLeft() and
@getCursorScreenPosition().isEqual(other.getCursorScreenPosition())
setVisible: (visible) -> @displayBuffer.setVisible(visible)
setScrollTop: (@scrollTop) ->
getScrollTop: -> @scrollTop
setScrollLeft: (@scrollLeft) ->
getScrollLeft: -> @scrollLeft
setSoftWrapColumn: (@softWrapColumn) -> @displayBuffer.setSoftWrapColumn(@softWrapColumn)
setSoftTabs: (@softTabs) ->
getSoftWrap: -> @softWrap
setSoftWrap: (@softWrap) ->
getTabText: -> @buildIndentString(1)
getTabLength: -> @displayBuffer.getTabLength()
setTabLength: (tabLength) -> @displayBuffer.setTabLength(tabLength)
clipBufferPosition: (bufferPosition) ->
@buffer.clipPosition(bufferPosition)
indentationForBufferRow: (bufferRow) ->
@indentLevelForLine(@lineForBufferRow(bufferRow))
setIndentationForBufferRow: (bufferRow, newLevel) ->
currentLevel = @indentationForBufferRow(bufferRow)
currentIndentString = @buildIndentString(currentLevel)
newIndentString = @buildIndentString(newLevel)
@buffer.change([[bufferRow, 0], [bufferRow, currentIndentString.length]], newIndentString)
indentLevelForLine: (line) ->
if match = line.match(/^[\t ]+/)
leadingWhitespace = match[0]
tabCount = leadingWhitespace.match(/\t/g)?.length ? 0
spaceCount = leadingWhitespace.match(/[ ]/g)?.length ? 0
tabCount + (spaceCount / @getTabLength())
else
0
buildIndentString: (number) ->
if @softTabs
_.multiplyString(" ", number * @getTabLength())
else
_.multiplyString("\t", Math.floor(number))
save: -> @buffer.save()
saveAs: (path) -> @buffer.saveAs(path)
getFileExtension: -> @buffer.getExtension()
getPath: -> @buffer.getPath()
isBufferRowBlank: (bufferRow) -> @buffer.isRowBlank(bufferRow)
nextNonBlankBufferRow: (bufferRow) -> @buffer.nextNonBlankRow(bufferRow)
getEofBufferPosition: -> @buffer.getEofPosition()
getLastBufferRow: -> @buffer.getLastRow()
bufferRangeForBufferRow: (row, options) -> @buffer.rangeForRow(row, options)
lineForBufferRow: (row) -> @buffer.lineForRow(row)
lineLengthForBufferRow: (row) -> @buffer.lineLengthForRow(row)
scanInRange: (args...) -> @buffer.scanInRange(args...)
backwardsScanInRange: (args...) -> @buffer.backwardsScanInRange(args...)
isModified: -> @buffer.isModified()
hasEditors: -> @buffer.hasEditors()
screenPositionForBufferPosition: (bufferPosition, options) -> @displayBuffer.screenPositionForBufferPosition(bufferPosition, options)
bufferPositionForScreenPosition: (screenPosition, options) -> @displayBuffer.bufferPositionForScreenPosition(screenPosition, options)
screenRangeForBufferRange: (range) -> @displayBuffer.screenRangeForBufferRange(range)
bufferRangeForScreenRange: (range) -> @displayBuffer.bufferRangeForScreenRange(range)
clipScreenPosition: (screenPosition, options) -> @displayBuffer.clipScreenPosition(screenPosition, options)
lineForScreenRow: (row) -> @displayBuffer.lineForRow(row)
linesForScreenRows: (start, end) -> @displayBuffer.linesForRows(start, end)
screenLineCount: -> @displayBuffer.lineCount()
maxScreenLineLength: -> @displayBuffer.maxLineLength()
getLastScreenRow: -> @displayBuffer.getLastRow()
bufferRowsForScreenRows: (startRow, endRow) -> @displayBuffer.bufferRowsForScreenRows(startRow, endRow)
scopesForBufferPosition: (bufferPosition) -> @displayBuffer.scopesForBufferPosition(bufferPosition)
getCursorScopes: -> @getCursor().getScopes()
logScreenLines: (start, end) -> @displayBuffer.logLines(start, end)
shouldAutoIndent: ->
config.get("editor.autoIndent")
shouldAutoIndentPastedText: ->
config.get("editor.autoIndentOnPaste")
insertText: (text, options={}) ->
options.autoIndent ?= @shouldAutoIndent()
@mutateSelectedText (selection) -> selection.insertText(text, options)
insertNewline: ->
@insertText('\n')
insertNewlineBelow: ->
@moveCursorToEndOfLine()
@insertNewline()
indent: (options={})->
options.autoIndent ?= @shouldAutoIndent()
@mutateSelectedText (selection) -> selection.indent(options)
backspace: ->
@mutateSelectedText (selection) -> selection.backspace()
backspaceToBeginningOfWord: ->
@mutateSelectedText (selection) -> selection.backspaceToBeginningOfWord()
backspaceToBeginningOfLine: ->
@mutateSelectedText (selection) -> selection.backspaceToBeginningOfLine()
delete: ->
@mutateSelectedText (selection) -> selection.delete()
deleteToEndOfWord: ->
@mutateSelectedText (selection) -> selection.deleteToEndOfWord()
deleteLine: ->
@mutateSelectedText (selection) -> selection.deleteLine()
indentSelectedRows: ->
@mutateSelectedText (selection) -> selection.indentSelectedRows()
outdentSelectedRows: ->
@mutateSelectedText (selection) -> selection.outdentSelectedRows()
toggleLineCommentsInSelection: ->
@mutateSelectedText (selection) -> selection.toggleLineComments()
autoIndentSelectedRows: ->
@mutateSelectedText (selection) -> selection.autoIndentSelectedRows()
normalizeTabsInBufferRange: (bufferRange) ->
return unless @softTabs
@scanInRange /\t/, bufferRange, (match, range, {replace}) => replace(@getTabText())
cutToEndOfLine: ->
maintainPasteboard = false
@mutateSelectedText (selection) ->
selection.cutToEndOfLine(maintainPasteboard)
maintainPasteboard = true
cutSelectedText: ->
maintainPasteboard = false
@mutateSelectedText (selection) ->
selection.cut(maintainPasteboard)
maintainPasteboard = true
copySelectedText: ->
maintainPasteboard = false
for selection in @getSelections()
selection.copy(maintainPasteboard)
maintainPasteboard = true
pasteText: (options={}) ->
options.normalizeIndent ?= true
options.autoIndent ?= @shouldAutoIndentPastedText()
[text, metadata] = pasteboard.read()
_.extend(options, metadata) if metadata
@insertText(text, options)
undo: ->
@buffer.undo(this)
redo: ->
@buffer.redo(this)
transact: (fn) ->
isNewTransaction = @buffer.transact()
oldSelectedRanges = @getSelectedBufferRanges()
@pushOperation
undo: (editSession) ->
editSession?.setSelectedBufferRanges(oldSelectedRanges)
if fn
result = fn()
@commit() if isNewTransaction
result
commit: ->
newSelectedRanges = @getSelectedBufferRanges()
@pushOperation
redo: (editSession) ->
editSession?.setSelectedBufferRanges(newSelectedRanges)
@buffer.commit()
abort: ->
@buffer.abort()
foldAll: ->
@displayBuffer.foldAll()
unfoldAll: ->
@displayBuffer.unfoldAll()
foldCurrentRow: ->
bufferRow = @bufferPositionForScreenPosition(@getCursorScreenPosition()).row
@foldBufferRow(bufferRow)
foldBufferRow: (bufferRow) ->
@displayBuffer.foldBufferRow(bufferRow)
unfoldCurrentRow: ->
bufferRow = @bufferPositionForScreenPosition(@getCursorScreenPosition()).row
@unfoldBufferRow(bufferRow)
unfoldBufferRow: (bufferRow) ->
@displayBuffer.unfoldBufferRow(bufferRow)
foldSelection: ->
selection.fold() for selection in @getSelections()
createFold: (startRow, endRow) ->
@displayBuffer.createFold(startRow, endRow)
destroyFoldsContainingBufferRow: (bufferRow) ->
@displayBuffer.destroyFoldsContainingBufferRow(bufferRow)
destroyFoldsIntersectingBufferRange: (bufferRange) ->
for row in [bufferRange.start.row..bufferRange.end.row]
@destroyFoldsContainingBufferRow(row)
destroyFold: (foldId) ->
fold = @displayBuffer.foldsById[foldId]
fold.destroy()
@setCursorBufferPosition([fold.startRow, 0])
isFoldedAtCursorRow: ->
@isFoldedAtScreenRow(@getCursorScreenRow())
isFoldedAtBufferRow: (bufferRow) ->
screenRow = @screenPositionForBufferPosition([bufferRow]).row
@isFoldedAtScreenRow(screenRow)
isFoldedAtScreenRow: (screenRow) ->
@lineForScreenRow(screenRow)?.fold?
largestFoldContainingBufferRow: (bufferRow) ->
@displayBuffer.largestFoldContainingBufferRow(bufferRow)
largestFoldStartingAtScreenRow: (screenRow) ->
@displayBuffer.largestFoldStartingAtScreenRow(screenRow)
suggestedIndentForBufferRow: (bufferRow) ->
@languageMode.suggestedIndentForBufferRow(bufferRow)
autoIndentBufferRows: (startRow, endRow) ->
@languageMode.autoIndentBufferRows(startRow, endRow)
autoIndentBufferRow: (bufferRow) ->
@languageMode.autoIndentBufferRow(bufferRow)
autoIncreaseIndentForBufferRow: (bufferRow) ->
@languageMode.autoIncreaseIndentForBufferRow(bufferRow)
autoDecreaseIndentForRow: (bufferRow) ->
@languageMode.autoDecreaseIndentForBufferRow(bufferRow)
toggleLineCommentsForBufferRows: (start, end) ->
@languageMode.toggleLineCommentsForBufferRows(start, end)
moveLineUp: ->
selection = @getSelectedBufferRange()
return if selection.start.row is 0
lastRow = @buffer.getLastRow()
return if selection.isEmpty() and selection.start.row is lastRow and @buffer.getLastLine() is ''
@transact =>
foldedRows = []
rows = [selection.start.row..selection.end.row]
if selection.start.row isnt selection.end.row and selection.end.column is 0
rows.pop() unless @isFoldedAtBufferRow(selection.end.row)
for row in rows
screenRow = @screenPositionForBufferPosition([row]).row
if @isFoldedAtScreenRow(screenRow)
bufferRange = @bufferRangeForScreenRange([[screenRow], [screenRow + 1]])
startRow = bufferRange.start.row
endRow = bufferRange.end.row - 1
foldedRows.push(endRow - 1)
else
startRow = row
endRow = row
endPosition = Point.min([endRow + 1], @buffer.getEofPosition())
lines = @buffer.getTextInRange([[startRow], endPosition])
if endPosition.row is lastRow and endPosition.column > 0 and not @buffer.lineEndingForRow(endPosition.row)
lines = "#{lines}\n"
@buffer.deleteRows(startRow, endRow)
@buffer.insert([startRow - 1], lines)
@foldBufferRow(foldedRow) for foldedRow in foldedRows
@setSelectedBufferRange(selection.translate([-1]), preserveFolds: true)
moveLineDown: ->
selection = @getSelectedBufferRange()
lastRow = @buffer.getLastRow()
return if selection.end.row is lastRow
return if selection.end.row is lastRow - 1 and @buffer.getLastLine() is ''
@transact =>
foldedRows = []
rows = [selection.end.row..selection.start.row]
if selection.start.row isnt selection.end.row and selection.end.column is 0
rows.shift() unless @isFoldedAtBufferRow(selection.end.row)
for row in rows
screenRow = @screenPositionForBufferPosition([row]).row
if @isFoldedAtScreenRow(screenRow)
bufferRange = @bufferRangeForScreenRange([[screenRow], [screenRow + 1]])
startRow = bufferRange.start.row
endRow = bufferRange.end.row - 1
foldedRows.push(endRow + 1)
else
startRow = row
endRow = row
if endRow + 1 is lastRow
endPosition = [endRow, @buffer.lineLengthForRow(endRow)]
else
endPosition = [endRow + 1]
lines = @buffer.getTextInRange([[startRow], endPosition])
@buffer.deleteRows(startRow, endRow)
insertPosition = Point.min([startRow + 1], @buffer.getEofPosition())
if insertPosition.row is @buffer.getLastRow() and insertPosition.column > 0
lines = "\n#{lines}"
@buffer.insert(insertPosition, lines)
@foldBufferRow(foldedRow) for foldedRow in foldedRows
@setSelectedBufferRange(selection.translate([1]), preserveFolds: true)
duplicateLine: ->
return unless @getSelection().isEmpty()
@transact =>
cursorPosition = @getCursorBufferPosition()
cursorRowFolded = @isFoldedAtCursorRow()
if cursorRowFolded
screenRow = @screenPositionForBufferPosition(cursorPosition).row
bufferRange = @bufferRangeForScreenRange([[screenRow], [screenRow + 1]])
else
bufferRange = new Range([cursorPosition.row], [cursorPosition.row + 1])
insertPosition = new Point(bufferRange.end.row)
if insertPosition.row >= @buffer.getLastRow()
@unfoldCurrentRow() if cursorRowFolded
@buffer.append("\n#{@getTextInBufferRange(bufferRange)}")
@foldCurrentRow() if cursorRowFolded
else
@buffer.insert(insertPosition, @getTextInBufferRange(bufferRange))
@setCursorScreenPosition(@getCursorScreenPosition().translate([1]))
@foldCurrentRow() if cursorRowFolded
mutateSelectedText: (fn) ->
@transact => fn(selection) for selection in @getSelections()
replaceSelectedText: (options={}, fn) ->
{selectWordIfEmpty} = options
@mutateSelectedText (selection) =>
range = selection.getBufferRange()
if selectWordIfEmpty and selection.isEmpty()
selection.selectWord()
text = selection.getText()
selection.delete()
selection.insertText(fn(text))
selection.setBufferRange(range)
pushOperation: (operation) ->
@buffer.pushOperation(operation, this)
markScreenRange: (args...) ->
@displayBuffer.markScreenRange(args...)
markBufferRange: (args...) ->
@displayBuffer.markBufferRange(args...)
markScreenPosition: (args...) ->
@displayBuffer.markScreenPosition(args...)
markBufferPosition: (args...) ->
@displayBuffer.markBufferPosition(args...)
destroyMarker: (args...) ->
@displayBuffer.destroyMarker(args...)
getMarkerCount: ->
@buffer.getMarkerCount()
getMarkerScreenRange: (args...) ->
@displayBuffer.getMarkerScreenRange(args...)
setMarkerScreenRange: (args...) ->
@displayBuffer.setMarkerScreenRange(args...)
getMarkerBufferRange: (args...) ->
@displayBuffer.getMarkerBufferRange(args...)
setMarkerBufferRange: (args...) ->
@displayBuffer.setMarkerBufferRange(args...)
getMarkerScreenPosition: (args...) ->
@displayBuffer.getMarkerScreenPosition(args...)
getMarkerBufferPosition: (args...) ->
@displayBuffer.getMarkerBufferPosition(args...)
getMarkerHeadScreenPosition: (args...) ->
@displayBuffer.getMarkerHeadScreenPosition(args...)
setMarkerHeadScreenPosition: (args...) ->
@displayBuffer.setMarkerHeadScreenPosition(args...)
getMarkerHeadBufferPosition: (args...) ->
@displayBuffer.getMarkerHeadBufferPosition(args...)
setMarkerHeadBufferPosition: (args...) ->
@displayBuffer.setMarkerHeadBufferPosition(args...)
getMarkerTailScreenPosition: (args...) ->
@displayBuffer.getMarkerTailScreenPosition(args...)
setMarkerTailScreenPosition: (args...) ->
@displayBuffer.setMarkerTailScreenPosition(args...)
getMarkerTailBufferPosition: (args...) ->
@displayBuffer.getMarkerTailBufferPosition(args...)
setMarkerTailBufferPosition: (args...) ->
@displayBuffer.setMarkerTailBufferPosition(args...)
observeMarker: (args...) ->
@displayBuffer.observeMarker(args...)
placeMarkerTail: (args...) ->
@displayBuffer.placeMarkerTail(args...)
clearMarkerTail: (args...) ->
@displayBuffer.clearMarkerTail(args...)
isMarkerReversed: (args...) ->
@displayBuffer.isMarkerReversed(args...)
hasMultipleCursors: ->
@getCursors().length > 1
getCursors: -> new Array(@cursors...)
getCursor: ->
_.last(@cursors)
addCursorAtScreenPosition: (screenPosition) ->
marker = @markScreenPosition(screenPosition, stayValid: true)
@addSelection(marker).cursor
addCursorAtBufferPosition: (bufferPosition) ->
marker = @markBufferPosition(bufferPosition, stayValid: true)
@addSelection(marker).cursor
addCursor: (marker) ->
cursor = new Cursor(editSession: this, marker: marker)
@cursors.push(cursor)
@trigger 'cursor-added', cursor
cursor
removeCursor: (cursor) ->
_.remove(@cursors, cursor)
addSelection: (marker, options={}) ->
unless options.preserveFolds
@destroyFoldsIntersectingBufferRange(@getMarkerBufferRange(marker))
cursor = @addCursor(marker)
selection = new Selection({editSession: this, marker, cursor})
@selections.push(selection)
@mergeIntersectingSelections()
@trigger 'selection-added', selection
selection
addSelectionForBufferRange: (bufferRange, options={}) ->
options = _.defaults({stayValid: true}, options)
marker = @markBufferRange(bufferRange, options)
@addSelection(marker)
setSelectedBufferRange: (bufferRange, options) ->
@setSelectedBufferRanges([bufferRange], options)
setSelectedBufferRanges: (bufferRanges, options={}) ->
throw new Error("Passed an empty array to setSelectedBufferRanges") unless bufferRanges.length
selections = @getSelections()
selection.destroy() for selection in selections[bufferRanges.length...]
for bufferRange, i in bufferRanges
bufferRange = Range.fromObject(bufferRange)
if selections[i]
selections[i].setBufferRange(bufferRange, options)
else
@addSelectionForBufferRange(bufferRange, options)
@mergeIntersectingSelections(options)
removeSelection: (selection) ->
_.remove(@selections, selection)
clearSelections: ->
lastSelection = @getLastSelection()
for selection in @getSelections() when selection != lastSelection
selection.destroy()
lastSelection.clear()
clearAllSelections: ->
selection.destroy() for selection in @getSelections()
getSelections: -> new Array(@selections...)
getSelection: (index) ->
index ?= @selections.length - 1
@selections[index]
getLastSelection: ->
_.last(@selections)
getSelectionsOrderedByBufferPosition: ->
@getSelections().sort (a, b) ->
aRange = a.getBufferRange()
bRange = b.getBufferRange()
aRange.end.compare(bRange.end)
getLastSelectionInBuffer: ->
_.last(@getSelectionsOrderedByBufferPosition())
selectionIntersectsBufferRange: (bufferRange) ->
_.any @getSelections(), (selection) ->
selection.intersectsBufferRange(bufferRange)
setCursorScreenPosition: (position, options) ->
@moveCursors (cursor) -> cursor.setScreenPosition(position, options)
getCursorScreenPosition: ->
@getCursor().getScreenPosition()
getCursorScreenRow: ->
@getCursor().getScreenRow()
setCursorBufferPosition: (position, options) ->
@moveCursors (cursor) -> cursor.setBufferPosition(position, options)
getCursorBufferPosition: ->
@getCursor().getBufferPosition()
getSelectedScreenRange: ->
@getLastSelection().getScreenRange()
getSelectedBufferRange: ->
@getLastSelection().getBufferRange()
getSelectedBufferRanges: ->
selection.getBufferRange() for selection in @getSelectionsOrderedByBufferPosition()
getSelectedText: ->
@getLastSelection().getText()
getTextInBufferRange: (range) ->
@buffer.getTextInRange(range)
getCurrentParagraphBufferRange: ->
@getCursor().getCurrentParagraphBufferRange()
getWordUnderCursor: (options) ->
@getTextInBufferRange(@getCursor().getCurrentWordBufferRange(options))
moveCursorUp: (lineCount) ->
@moveCursors (cursor) -> cursor.moveUp(lineCount)
moveCursorDown: (lineCount) ->
@moveCursors (cursor) -> cursor.moveDown(lineCount)
moveCursorLeft: ->
@moveCursors (cursor) -> cursor.moveLeft()
moveCursorRight: ->
@moveCursors (cursor) -> cursor.moveRight()
moveCursorToTop: ->
@moveCursors (cursor) -> cursor.moveToTop()
moveCursorToBottom: ->
@moveCursors (cursor) -> cursor.moveToBottom()
moveCursorToBeginningOfLine: ->
@moveCursors (cursor) -> cursor.moveToBeginningOfLine()
moveCursorToFirstCharacterOfLine: ->
@moveCursors (cursor) -> cursor.moveToFirstCharacterOfLine()
moveCursorToEndOfLine: ->
@moveCursors (cursor) -> cursor.moveToEndOfLine()
moveCursorToBeginningOfWord: ->
@moveCursors (cursor) -> cursor.moveToBeginningOfWord()
moveCursorToEndOfWord: ->
@moveCursors (cursor) -> cursor.moveToEndOfWord()
moveCursors: (fn) ->
fn(cursor) for cursor in @getCursors()
@mergeCursors()
selectToScreenPosition: (position) ->
lastSelection = @getLastSelection()
lastSelection.selectToScreenPosition(position)
@mergeIntersectingSelections(reverse: lastSelection.isReversed())
selectRight: ->
@expandSelectionsForward (selection) => selection.selectRight()
selectLeft: ->
@expandSelectionsBackward (selection) => selection.selectLeft()
selectUp: ->
@expandSelectionsBackward (selection) => selection.selectUp()
selectDown: ->
@expandSelectionsForward (selection) => selection.selectDown()
selectToTop: ->
@expandSelectionsBackward (selection) => selection.selectToTop()
selectAll: ->
@expandSelectionsForward (selection) => selection.selectAll()
selectToBottom: ->
@expandSelectionsForward (selection) => selection.selectToBottom()
selectToBeginningOfLine: ->
@expandSelectionsBackward (selection) => selection.selectToBeginningOfLine()
selectToEndOfLine: ->
@expandSelectionsForward (selection) => selection.selectToEndOfLine()
selectLine: ->
@expandSelectionsForward (selection) => selection.selectLine()
transpose: ->
@mutateSelectedText (selection) =>
if selection.isEmpty()
selection.selectRight()
text = selection.getText()
selection.delete()
selection.cursor.moveLeft()
selection.insertText text
else
selection.insertText selection.getText().split('').reverse().join('')
upperCase: ->
@replaceSelectedText selectWordIfEmpty:true, (text) => text.toUpperCase()
lowerCase: ->
@replaceSelectedText selectWordIfEmpty:true, (text) => text.toLowerCase()
expandLastSelectionOverLine: ->
@getLastSelection().expandOverLine()
selectToBeginningOfWord: ->
@expandSelectionsBackward (selection) => selection.selectToBeginningOfWord()
selectToEndOfWord: ->
@expandSelectionsForward (selection) => selection.selectToEndOfWord()
selectWord: ->
@expandSelectionsForward (selection) => selection.selectWord()
expandLastSelectionOverWord: ->
@getLastSelection().expandOverWord()
selectMarker: (id) ->
if bufferRange = @getMarkerBufferRange(id)
@setSelectedBufferRange(bufferRange)
true
else
false
markersForBufferPosition: (bufferPosition) ->
@buffer.markersForPosition(bufferPosition)
mergeCursors: ->
positions = []
for cursor in @getCursors()
position = cursor.getBufferPosition().toString()
if position in positions
cursor.destroy()
else
positions.push(position)
expandSelectionsForward: (fn) ->
fn(selection) for selection in @getSelections()
@mergeIntersectingSelections()
expandSelectionsBackward: (fn) ->
fn(selection) for selection in @getSelections()
@mergeIntersectingSelections(reverse: true)
finalizeSelections: ->
selection.finalize() for selection in @getSelections()
mergeIntersectingSelections: (options) ->
for selection in @getSelections()
otherSelections = @getSelections()
_.remove(otherSelections, selection)
for otherSelection in otherSelections
if selection.intersectsWith(otherSelection)
selection.merge(otherSelection, options)
@mergeIntersectingSelections(options)
return
inspect: ->
JSON.stringify @serialize()
preserveCursorPositionOnBufferReload: ->
cursorPosition = null
@subscribe @buffer, "will-reload", =>
cursorPosition = @getCursorBufferPosition()
@subscribe @buffer, "reloaded", =>
@setCursorBufferPosition(cursorPosition) if cursorPosition
cursorPosition = null
getGrammar: -> @languageMode.grammar
reloadGrammar: ->
grammarChanged = @languageMode.reloadGrammar()
if grammarChanged
@unfoldAll()
@displayBuffer.tokenizedBuffer.resetScreenLines()
grammarChanged
_.extend(EditSession.prototype, EventEmitter)
_.extend(EditSession.prototype, Subscriber)