pulsar/spec/app/editor-spec.coffee
Nathan Sobo 5f253d78e9 Optimization: Use absolute positioning instead of flexbox in editor
Flexbox was causing layouts and repaints to cover the entire scroll view instead of just the edited line. This cuts down on DOM manipulation cost significantly.
2012-09-25 14:58:31 -06:00

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RootView = require 'root-view'
EditSession = require 'edit-session'
Buffer = require 'buffer'
Editor = require 'editor'
Range = require 'range'
Project = require 'project'
$ = require 'jquery'
{$$} = require 'space-pen'
_ = require 'underscore'
fs = require 'fs'
describe "Editor", ->
[rootView, project, buffer, editor, cachedLineHeight] = []
getLineHeight = ->
return cachedLineHeight if cachedLineHeight?
editorForMeasurement = new Editor(editSession: rootView.project.buildEditSessionForPath('sample.js'))
editorForMeasurement.attachToDom()
cachedLineHeight = editorForMeasurement.lineHeight
editorForMeasurement.remove()
cachedLineHeight
beforeEach ->
rootView = new RootView(require.resolve('fixtures/sample.js'))
project = rootView.project
editor = rootView.getActiveEditor()
buffer = editor.getBuffer()
editor.attachToDom = ({ heightInLines } = {}) ->
heightInLines ?= this.getBuffer().getLineCount()
this.height(getLineHeight() * heightInLines)
$('#jasmine-content').append(this)
editor.lineOverdraw = 2
editor.enableKeymap()
editor.isFocused = true
afterEach ->
rootView.remove()
describe "construction", ->
it "throws an error if no editor session is given", ->
expect(-> new Editor).toThrow()
describe ".copy()", ->
it "builds a new editor with the same edit sessions, cursor position, and scroll position as the receiver", ->
rootView.attachToDom()
rootView.height(8 * editor.lineHeight)
rootView.width(50 * editor.charWidth)
editor.edit(rootView.project.buildEditSessionForPath('two-hundred.txt'))
editor.setCursorScreenPosition([5, 1])
editor.scrollTop(1.5 * editor.lineHeight)
editor.scrollView.scrollLeft(44)
# proves this test covers serialization and deserialization
spyOn(editor, 'serialize').andCallThrough()
spyOn(Editor, 'deserialize').andCallThrough()
newEditor = editor.copy()
expect(editor.serialize).toHaveBeenCalled()
expect(Editor.deserialize).toHaveBeenCalled()
expect(newEditor.getBuffer()).toBe editor.getBuffer()
expect(newEditor.getCursorScreenPosition()).toEqual editor.getCursorScreenPosition()
expect(newEditor.editSessions).toEqual(editor.editSessions)
expect(newEditor.activeEditSession).toEqual(editor.activeEditSession)
expect(newEditor.getActiveEditSessionIndex()).toEqual(editor.getActiveEditSessionIndex())
newEditor.height(editor.height())
newEditor.width(editor.width())
rootView.remove()
newEditor.attachToDom()
expect(newEditor.scrollTop()).toBe editor.scrollTop()
expect(newEditor.scrollView.scrollLeft()).toBe 44
it "does not blow up if no file exists for a previous edit session, but prints a warning", ->
spyOn(console, 'warn')
fs.write('/tmp/delete-me')
editor.edit(rootView.project.buildEditSessionForPath('/tmp/delete-me'))
fs.remove('/tmp/delete-me')
newEditor = editor.copy()
expect(console.warn).toHaveBeenCalled()
describe "when the editor is attached to the dom", ->
it "calculates line height and char width and updates the pixel position of the cursor", ->
expect(editor.lineHeight).toBeNull()
expect(editor.charWidth).toBeNull()
editor.setCursorScreenPosition(row: 2, column: 2)
editor.attachToDom()
expect(editor.lineHeight).not.toBeNull()
expect(editor.charWidth).not.toBeNull()
expect(editor.find('.cursor').offset()).toEqual pagePixelPositionForPoint(editor, [2, 2])
it "is focused", ->
editor.attachToDom()
expect(editor).toMatchSelector ":has(:focus)"
describe "when the editor recieves focus", ->
it "focuses the hidden input", ->
editor.attachToDom()
editor.focus()
expect(editor).not.toMatchSelector ':focus'
expect(editor.hiddenInput).toMatchSelector ':focus'
describe "when the hidden input is focused / unfocused", ->
it "assigns the isFocused flag on the editor and also adds/removes the .focused css class", ->
editor.attachToDom()
editor.isFocused = false
editor.hiddenInput.focus()
expect(editor.isFocused).toBeTruthy()
expect(editor).toHaveClass('focused')
editor.hiddenInput.focusout()
expect(editor.isFocused).toBeFalsy()
expect(editor).not.toHaveClass('focused')
describe "when the activeEditSession's file is modified on disk", ->
it "triggers an alert", ->
path = "/tmp/atom-changed-file.txt"
fs.write(path, "")
editSession = project.buildEditSessionForPath(path)
editor.edit(editSession)
editor.insertText("now the buffer is modified")
fileChangeHandler = jasmine.createSpy('fileChange')
editSession.buffer.file.on 'contents-change', fileChangeHandler
spyOn(atom, "confirm")
fs.write(path, "a file change")
waitsFor "file to trigger contents-change event", ->
fileChangeHandler.callCount > 0
runs ->
expect(atom.confirm).toHaveBeenCalled()
describe ".remove()", ->
it "removes subscriptions from all edit session buffers", ->
previousEditSession = editor.activeEditSession
otherEditSession = rootView.project.buildEditSessionForPath(rootView.project.resolve('sample.txt'))
expect(previousEditSession.buffer.subscriptionCount()).toBeGreaterThan 1
editor.edit(otherEditSession)
expect(otherEditSession.buffer.subscriptionCount()).toBeGreaterThan 1
editor.remove()
expect(previousEditSession.buffer.subscriptionCount()).toBe 0
expect(otherEditSession.buffer.subscriptionCount()).toBe 0
describe "when 'close' is triggered", ->
it "closes active edit session and loads next edit session", ->
editor.edit(rootView.project.buildEditSessionForPath())
editSession = editor.activeEditSession
spyOn(editSession, 'destroy').andCallThrough()
spyOn(editor, "remove").andCallThrough()
editor.trigger "close"
expect(editSession.destroy).toHaveBeenCalled()
expect(editor.remove).not.toHaveBeenCalled()
expect(editor.getBuffer()).toBe buffer
it "calls remove on the editor if there is one edit session and mini is false", ->
editSession = editor.activeEditSession
expect(editor.mini).toBeFalsy()
expect(editor.editSessions.length).toBe 1
spyOn(editor, 'remove').andCallThrough()
editor.trigger 'close'
spyOn(editSession, 'destroy').andCallThrough()
expect(editor.remove).toHaveBeenCalled()
miniEditor = new Editor(mini: true)
spyOn(miniEditor, 'remove').andCallThrough()
miniEditor.trigger 'close'
expect(miniEditor.remove).not.toHaveBeenCalled()
describe "when buffer is modified", ->
it "triggers an alert and does not close the session", ->
spyOn(editor, 'remove').andCallThrough()
spyOn(atom, 'confirm')
editor.insertText("I AM CHANGED!")
editor.trigger "close"
expect(editor.remove).not.toHaveBeenCalled()
expect(atom.confirm).toHaveBeenCalled()
describe ".edit(editSession)", ->
otherEditSession = null
beforeEach ->
otherEditSession = rootView.project.buildEditSessionForPath()
describe "when the edit session wasn't previously assigned to this editor", ->
it "adds edit session to editor", ->
originalEditSessionCount = editor.editSessions.length
editor.edit(otherEditSession)
expect(editor.activeEditSession).toBe otherEditSession
expect(editor.editSessions.length).toBe originalEditSessionCount + 1
describe "when the edit session was previously assigned to this editor", ->
it "restores the previous edit session associated with the editor", ->
previousEditSession = editor.activeEditSession
editor.edit(otherEditSession)
expect(editor.activeEditSession).not.toBe previousEditSession
editor.edit(previousEditSession)
expect(editor.activeEditSession).toBe previousEditSession
it "handles buffer manipulation correctly after switching to a new edit session", ->
editor.attachToDom()
editor.insertText("abc\n")
expect(editor.lineElementForScreenRow(0).text()).toBe 'abc'
editor.edit(otherEditSession)
expect(editor.lineElementForScreenRow(0).html()).toBe ' '
editor.insertText("def\n")
expect(editor.lineElementForScreenRow(0).text()).toBe 'def'
describe "switching edit sessions", ->
[session0, session1, session2] = []
beforeEach ->
session0 = editor.activeEditSession
editor.edit(rootView.project.buildEditSessionForPath('sample.txt'))
session1 = editor.activeEditSession
editor.edit(rootView.project.buildEditSessionForPath('two-hundred.txt'))
session2 = editor.activeEditSession
describe ".setActiveEditSessionIndex(index)", ->
it "restores the buffer, cursors, selections, and scroll position of the edit session associated with the index", ->
editor.attachToDom(heightInLines: 10)
editor.setSelectedBufferRange([[40, 0], [43, 1]])
expect(editor.getSelection().getScreenRange()).toEqual [[40, 0], [43, 1]]
previousScrollHeight = editor.verticalScrollbar.prop('scrollHeight')
editor.scrollTop(750)
expect(editor.scrollTop()).toBe 750
editor.setActiveEditSessionIndex(0)
expect(editor.getBuffer()).toBe session0.buffer
editor.setActiveEditSessionIndex(2)
expect(editor.getBuffer()).toBe session2.buffer
expect(editor.getCursorScreenPosition()).toEqual [43, 1]
expect(editor.verticalScrollbar.prop('scrollHeight')).toBe previousScrollHeight
expect(editor.scrollTop()).toBe 750
expect(editor.getSelection().getScreenRange()).toEqual [[40, 0], [43, 1]]
expect(editor.getSelectionView().find('.selection')).toExist()
editor.setActiveEditSessionIndex(0)
editor.activeEditSession.selectToEndOfLine()
expect(editor.getSelectionView().find('.selection')).toExist()
it "triggers alert if edit session's file changed on disk", ->
path = "/tmp/atom-changed-file.txt"
fs.write(path, "")
editSession = project.buildEditSessionForPath(path)
editor.edit editSession
editSession.insertText("a buffer change")
bufferContentsChangeHandler = jasmine.createSpy('fileChange')
editSession.on 'buffer-contents-change-on-disk', bufferContentsChangeHandler
spyOn(atom, "confirm")
fs.write(path, "a file change")
waitsFor "file to trigger contents-change event", ->
bufferContentsChangeHandler.callCount > 0
runs ->
expect(atom.confirm).toHaveBeenCalled()
describe ".loadNextEditSession()", ->
it "loads the next editor state and wraps to beginning when end is reached", ->
expect(editor.activeEditSession).toBe session2
editor.loadNextEditSession()
expect(editor.activeEditSession).toBe session0
editor.loadNextEditSession()
expect(editor.activeEditSession).toBe session1
editor.loadNextEditSession()
expect(editor.activeEditSession).toBe session2
describe ".loadPreviousEditSession()", ->
it "loads the next editor state and wraps to beginning when end is reached", ->
expect(editor.activeEditSession).toBe session2
editor.loadPreviousEditSession()
expect(editor.activeEditSession).toBe session1
editor.loadPreviousEditSession()
expect(editor.activeEditSession).toBe session0
editor.loadPreviousEditSession()
expect(editor.activeEditSession).toBe session2
describe ".save()", ->
describe "when the current buffer has a path", ->
tempFilePath = null
beforeEach ->
rootView.remove()
tempFilePath = '/tmp/atom-temp.txt'
fs.write(tempFilePath, "")
rootView = new RootView(tempFilePath)
editor = rootView.getActiveEditor()
project = rootView.project
expect(editor.getPath()).toBe tempFilePath
afterEach ->
expect(fs.remove(tempFilePath))
it "saves the current buffer to disk", ->
editor.getBuffer().setText 'Edited!'
expect(fs.read(tempFilePath)).not.toBe "Edited!"
editor.save()
expect(fs.exists(tempFilePath)).toBeTruthy()
expect(fs.read(tempFilePath)).toBe 'Edited!'
describe "when the current buffer has no path", ->
selectedFilePath = null
beforeEach ->
editor.edit(rootView.project.buildEditSessionForPath())
expect(editor.getPath()).toBeUndefined()
editor.getBuffer().setText 'Save me to a new path'
spyOn(atom, 'showSaveDialog').andCallFake (callback) -> callback(selectedFilePath)
it "presents a 'save as' dialog", ->
editor.save()
expect(atom.showSaveDialog).toHaveBeenCalled()
describe "when a path is chosen", ->
it "saves the buffer to the chosen path", ->
selectedFilePath = '/tmp/temp.txt'
editor.save()
expect(fs.exists(selectedFilePath)).toBeTruthy()
expect(fs.read(selectedFilePath)).toBe 'Save me to a new path'
describe "when dialog is cancelled", ->
it "does not save the buffer", ->
selectedFilePath = null
editor.save()
expect(fs.exists(selectedFilePath)).toBeFalsy()
describe ".scrollTop(n)", ->
beforeEach ->
editor.attachToDom(heightInLines: 5)
expect(editor.verticalScrollbar.scrollTop()).toBe 0
describe "when called with a scroll top argument", ->
it "sets the scrollTop of the vertical scrollbar and sets scrollTop on the line numbers and lines", ->
editor.scrollTop(100)
expect(editor.verticalScrollbar.scrollTop()).toBe 100
expect(editor.scrollView.scrollTop()).toBe 0
expect(editor.renderedLines.css('top')).toBe "-100px"
expect(editor.gutter.lineNumbers.css('top')).toBe "-100px"
editor.scrollTop(120)
expect(editor.verticalScrollbar.scrollTop()).toBe 120
expect(editor.scrollView.scrollTop()).toBe 0
expect(editor.renderedLines.css('top')).toBe "-120px"
expect(editor.gutter.lineNumbers.css('top')).toBe "-120px"
it "does not allow negative scrollTops to be assigned", ->
editor.scrollTop(-100)
expect(editor.scrollTop()).toBe 0
it "doesn't do anything if the scrollTop hasn't changed", ->
editor.scrollTop(100)
spyOn(editor.verticalScrollbar, 'scrollTop')
spyOn(editor.renderedLines, 'css')
spyOn(editor.gutter.lineNumbers, 'css')
editor.scrollTop(100)
expect(editor.verticalScrollbar.scrollTop).not.toHaveBeenCalled()
expect(editor.renderedLines.css).not.toHaveBeenCalled()
expect(editor.gutter.lineNumbers.css).not.toHaveBeenCalled()
describe "when the 'adjustVerticalScrollbar' option is false (defaults to true)", ->
it "doesn't adjust the scrollTop of the vertical scrollbar", ->
editor.scrollTop(100, adjustVerticalScrollbar: false)
expect(editor.verticalScrollbar.scrollTop()).toBe 0
expect(editor.renderedLines.css('top')).toBe "-100px"
expect(editor.gutter.lineNumbers.css('top')).toBe "-100px"
describe "when called with no argument", ->
it "returns the last assigned value or 0 if none has been assigned", ->
expect(editor.scrollTop()).toBe 0
editor.scrollTop(50)
expect(editor.scrollTop()).toBe 50
describe "split methods", ->
describe "when inside a pane", ->
fakePane = null
beforeEach ->
fakePane = { splitUp: jasmine.createSpy('splitUp').andReturn({}), remove: -> }
spyOn(editor, 'pane').andReturn(fakePane)
it "calls the corresponding split method on the containing pane with a new editor containing a copy of the active edit session", ->
editor.edit project.buildEditSessionForPath("sample.txt")
editor.splitUp()
expect(fakePane.splitUp).toHaveBeenCalled()
[newEditor] = fakePane.splitUp.argsForCall[0]
expect(newEditor.editSessions.length).toEqual 1
expect(newEditor.activeEditSession.buffer).toBe editor.activeEditSession.buffer
newEditor.remove()
describe "when not inside a pane", ->
it "does not split the editor, but doesn't throw an exception", ->
editor.splitUp().remove()
editor.splitDown().remove()
editor.splitLeft().remove()
editor.splitRight().remove()
describe "editor-open event", ->
it 'only triggers an editor-open event when it is first added to the DOM', ->
openHandler = jasmine.createSpy('openHandler')
editor.on 'editor-open', openHandler
editor.simulateDomAttachment()
expect(openHandler).toHaveBeenCalled()
[event, eventEditor] = openHandler.argsForCall[0]
expect(eventEditor).toBe editor
openHandler.reset()
editor.simulateDomAttachment()
expect(openHandler).not.toHaveBeenCalled()
describe "editor-path-change event", ->
path = null
beforeEach ->
path = "/tmp/something.txt"
fs.write(path, path)
afterEach ->
fs.remove(path) if fs.exists(path)
it "emits event when buffer's path is changed", ->
eventHandler = jasmine.createSpy('eventHandler')
editor.on 'editor-path-change', eventHandler
editor.getBuffer().saveAs(path)
expect(eventHandler).toHaveBeenCalled()
it "emits event when editor receives a new buffer", ->
eventHandler = jasmine.createSpy('eventHandler')
editor.on 'editor-path-change', eventHandler
editor.edit(rootView.project.buildEditSessionForPath(path))
expect(eventHandler).toHaveBeenCalled()
it "stops listening to events on previously set buffers", ->
eventHandler = jasmine.createSpy('eventHandler')
oldBuffer = editor.getBuffer()
editor.on 'editor-path-change', eventHandler
editor.edit(rootView.project.buildEditSessionForPath(path))
expect(eventHandler).toHaveBeenCalled()
eventHandler.reset()
oldBuffer.saveAs("/tmp/atom-bad.txt")
expect(eventHandler).not.toHaveBeenCalled()
eventHandler.reset()
editor.getBuffer().saveAs("/tmp/atom-new.txt")
expect(eventHandler).toHaveBeenCalled()
describe "font size", ->
it "sets the initial font size based on the value assigned to the root view", ->
rootView.setFontSize(20)
rootView.simulateDomAttachment()
newEditor = editor.splitRight()
expect(editor.css('font-size')).toBe '20px'
expect(newEditor.css('font-size')).toBe '20px'
describe "when the font size changes on the view", ->
it "updates the font sizes of editors and recalculates dimensions critical to cursor positioning", ->
rootView.attachToDom()
rootView.setFontSize(10)
lineHeightBefore = editor.lineHeight
charWidthBefore = editor.charWidth
editor.setCursorScreenPosition [5, 5]
rootView.setFontSize(30)
expect(editor.css('font-size')).toBe '30px'
expect(editor.lineHeight).toBeGreaterThan lineHeightBefore
expect(editor.charWidth).toBeGreaterThan charWidthBefore
expect(editor.getCursorView().position()).toEqual { top: 5 * editor.lineHeight, left: 5 * editor.charWidth }
# ensure we clean up font size subscription
editor.trigger('close')
rootView.setFontSize(22)
expect(editor.css('font-size')).toBe '30px'
it "updates the gutter width and font size", ->
rootView.attachToDom()
originalFontSize = rootView.getFontSize()
originalGutterWidth = editor.gutter.width()
rootView.setFontSize(originalFontSize * 4)
expect(editor.gutter.css('font-size')).toBe "#{originalFontSize * 4}px"
expect(editor.gutter.width()).toBe(originalGutterWidth * 4)
it "updates lines if there are unrendered lines", ->
editor.attachToDom(heightInLines: 5)
originalLineCount = editor.renderedLines.find(".line").length
expect(originalLineCount).toBeGreaterThan 0
editor.setFontSize(10)
expect(editor.renderedLines.find(".line").length).toBeGreaterThan originalLineCount
describe "mouse events", ->
beforeEach ->
editor.attachToDom()
editor.css(position: 'absolute', top: 10, left: 10, width: 400)
describe "single-click", ->
it "re-positions the cursor to the clicked row / column", ->
expect(editor.getCursorScreenPosition()).toEqual(row: 0, column: 0)
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [3, 10])
expect(editor.getCursorScreenPosition()).toEqual(row: 3, column: 10)
describe "when the lines are scrolled to the right", ->
it "re-positions the cursor on the clicked location", ->
setEditorWidthInChars(editor, 30)
expect(editor.getCursorScreenPosition()).toEqual(row: 0, column: 0)
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [3, 30]) # scrolls lines to the right
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [3, 50])
expect(editor.getCursorBufferPosition()).toEqual(row: 3, column: 50)
describe "double-click", ->
it "selects the word under the cursor", ->
expect(editor.getCursorScreenPosition()).toEqual(row: 0, column: 0)
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [0, 8], originalEvent: {detail: 1})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [0, 8], originalEvent: {detail: 2})
editor.renderedLines.trigger 'mouseup'
expect(editor.getSelectedText()).toBe "quicksort"
describe "triple/quardruple/etc-click", ->
it "selects the line under the cursor", ->
expect(editor.getCursorScreenPosition()).toEqual(row: 0, column: 0)
# Triple click
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [1, 8], originalEvent: {detail: 1})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [1, 8], originalEvent: {detail: 2})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [1, 8], originalEvent: {detail: 3})
editor.renderedLines.trigger 'mouseup'
expect(editor.getSelectedText()).toBe " var sort = function(items) {"
# Quad click
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [2, 3], originalEvent: {detail: 1})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [2, 3], originalEvent: {detail: 2})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [2, 3], originalEvent: {detail: 3})
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [2, 3], originalEvent: {detail: 4})
editor.renderedLines.trigger 'mouseup'
expect(editor.getSelectedText()).toBe " if (items.length <= 1) return items;"
describe "shift-click", ->
it "selects from the cursor's current location to the clicked location", ->
editor.setCursorScreenPosition([4, 7])
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true)
expect(editor.getSelection().getScreenRange()).toEqual [[4, 7], [5, 24]]
describe "shift-double-click", ->
it "expands the selection to include the double-clicked word", ->
editor.setCursorScreenPosition([4, 7])
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true, originalEvent: { detail: 1 })
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true, originalEvent: { detail: 2 })
editor.renderedLines.trigger 'mouseup'
expect(editor.getSelection().getScreenRange()).toEqual [[4, 7], [5, 27]]
describe "shift-triple-click", ->
it "expands the selection to include the triple-clicked line", ->
editor.setCursorScreenPosition([4, 7])
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true, originalEvent: { detail: 1 })
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true, originalEvent: { detail: 2 })
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [5, 24], shiftKey: true, originalEvent: { detail: 3 })
editor.renderedLines.trigger 'mouseup'
expect(editor.getSelection().getScreenRange()).toEqual [[4, 7], [5, 30]]
describe "meta-click", ->
it "places an additional cursor", ->
editor.attachToDom()
setEditorHeightInLines(editor, 5)
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [3, 0])
editor.scrollTop(editor.lineHeight * 6)
spyOn(editor, "scrollTo").andCallThrough()
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [6, 0], metaKey: true)
expect(editor.scrollTo.callCount).toBe 1
[cursor1, cursor2] = editor.getCursorViews()
expect(cursor1.position()).toEqual(top: 3 * editor.lineHeight, left: 0)
expect(cursor1.getBufferPosition()).toEqual [3, 0]
expect(cursor2.position()).toEqual(top: 6 * editor.lineHeight, left: 0)
expect(cursor2.getBufferPosition()).toEqual [6, 0]
describe "click and drag", ->
it "creates a selection from the initial click to mouse cursor's location ", ->
editor.attachToDom()
editor.css(position: 'absolute', top: 10, left: 10)
# start
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 10])
# moving changes selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [5, 27])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 10})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
# mouse up may occur outside of editor, but still need to halt selection
$(document).trigger 'mouseup'
# moving after mouse up should not change selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [8, 8])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 10})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
describe "double-click and drag", ->
it "creates a selection from the word underneath an initial double click to mouse's new location ", ->
editor.attachToDom()
editor.css(position: 'absolute', top: 10, left: 10)
# double click
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 7], originalEvent: {detail: 1})
$(document).trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 7], originalEvent: {detail: 2})
# moving changes selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [5, 27])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 4})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
# mouse up may occur outside of editor, but still need to halt selection
$(document).trigger 'mouseup'
# moving after mouse up should not change selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [8, 8])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 4})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
describe "trip-click and drag", ->
it "creates a selection from the line underneath an initial triple click to mouse's new location ", ->
editor.attachToDom()
editor.css(position: 'absolute', top: 10, left: 10)
# double click
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 7], originalEvent: {detail: 1})
$(document).trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 7], originalEvent: {detail: 2})
$(document).trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 7], originalEvent: {detail: 3})
# moving changes selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [5, 27])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 0})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
# mouse up may occur outside of editor, but still need to halt selection
$(document).trigger 'mouseup'
# moving after mouse up should not change selection
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [8, 8])
range = editor.getSelection().getScreenRange()
expect(range.start).toEqual({row: 4, column: 0})
expect(range.end).toEqual({row: 5, column: 27})
expect(editor.getCursorScreenPosition()).toEqual(row: 5, column: 27)
describe "meta-click and drag", ->
it "adds an additional selection", ->
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [4, 10])
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [5, 27])
editor.renderedLines.trigger 'mouseup'
editor.renderedLines.trigger mousedownEvent(editor: editor, point: [6, 10], metaKey: true)
editor.renderedLines.trigger mousemoveEvent(editor: editor, point: [8, 27], metaKey: true)
editor.renderedLines.trigger 'mouseup'
selections = editor.getSelections()
expect(selections.length).toBe 2
[selection1, selection2] = selections
expect(selection1.getScreenRange()).toEqual [[4, 10], [5, 27]]
expect(selection2.getScreenRange()).toEqual [[6, 10], [8, 27]]
describe "when text input events are triggered on the hidden input element", ->
it "inserts the typed character at the cursor position, both in the buffer and the pre element", ->
editor.attachToDom()
editor.setCursorScreenPosition(row: 1, column: 6)
expect(buffer.lineForRow(1).charAt(6)).not.toBe 'q'
editor.hiddenInput.textInput 'q'
expect(buffer.lineForRow(1).charAt(6)).toBe 'q'
expect(editor.getCursorScreenPosition()).toEqual(row: 1, column: 7)
expect(editor.renderedLines.find('.line:eq(1)')).toHaveText buffer.lineForRow(1)
describe "selection rendering", ->
[charWidth, lineHeight, selection, selectionView] = []
beforeEach ->
editor.attachToDom()
editor.width(500)
{ charWidth, lineHeight } = editor
selection = editor.getSelection()
selectionView = editor.getSelectionView()
describe "when a selection is added", ->
it "adds a selection view for it with the proper regions", ->
editor.activeEditSession.addSelectionForBufferRange([[2, 7], [2, 25]])
selectionViews = editor.getSelectionViews()
expect(selectionViews.length).toBe 2
expect(selectionViews[1].regions.length).toBe 1
region = selectionViews[1].regions[0]
expect(region.position().top).toBeCloseTo(2 * lineHeight)
expect(region.position().left).toBeCloseTo(7 * charWidth)
expect(region.height()).toBeCloseTo lineHeight
expect(region.width()).toBeCloseTo((25 - 7) * charWidth)
describe "when a selection changes", ->
describe "when the selection is within a single line", ->
it "covers the selection's range with a single region", ->
selection.setBufferRange(new Range({row: 2, column: 7}, {row: 2, column: 25}))
expect(selectionView.regions.length).toBe 1
region = selectionView.regions[0]
expect(region.position().top).toBeCloseTo(2 * lineHeight)
expect(region.position().left).toBeCloseTo(7 * charWidth)
expect(region.height()).toBeCloseTo lineHeight
expect(region.width()).toBeCloseTo((25 - 7) * charWidth)
describe "when the selection spans 2 lines", ->
it "covers the selection's range with 2 regions", ->
selection.setBufferRange(new Range({row: 2, column: 7}, {row: 3, column: 25}))
expect(selectionView.regions.length).toBe 2
region1 = selectionView.regions[0]
expect(region1.position().top).toBeCloseTo(2 * lineHeight)
expect(region1.position().left).toBeCloseTo(7 * charWidth)
expect(region1.height()).toBeCloseTo lineHeight
expect(region1.width()).toBeCloseTo(editor.renderedLines.width() - region1.position().left)
region2 = selectionView.regions[1]
expect(region2.position().top).toBeCloseTo(3 * lineHeight)
expect(region2.position().left).toBeCloseTo(0)
expect(region2.height()).toBeCloseTo lineHeight
expect(region2.width()).toBeCloseTo(25 * charWidth)
describe "when the selection spans more than 2 lines", ->
it "covers the selection's range with 3 regions", ->
selection.setBufferRange(new Range({row: 2, column: 7}, {row: 6, column: 25}))
expect(selectionView.regions.length).toBe 3
region1 = selectionView.regions[0]
expect(region1.position().top).toBeCloseTo(2 * lineHeight)
expect(region1.position().left).toBeCloseTo(7 * charWidth)
expect(region1.height()).toBeCloseTo lineHeight
expect(region1.width()).toBeCloseTo(editor.renderedLines.width() - region1.position().left)
region2 = selectionView.regions[1]
expect(region2.position().top).toBeCloseTo(3 * lineHeight)
expect(region2.position().left).toBeCloseTo(0)
expect(region2.height()).toBeCloseTo(3 * lineHeight)
expect(region2.width()).toBeCloseTo(editor.renderedLines.width())
# resizes with the editor
expect(editor.width()).toBeLessThan(800)
editor.width(800)
expect(region2.width()).toBe(editor.renderedLines.width())
region3 = selectionView.regions[2]
expect(region3.position().top).toBeCloseTo(6 * lineHeight)
expect(region3.position().left).toBeCloseTo(0)
expect(region3.height()).toBeCloseTo lineHeight
expect(region3.width()).toBeCloseTo(25 * charWidth)
it "clears previously drawn regions before creating new ones", ->
selection.setBufferRange(new Range({row: 2, column: 7}, {row: 4, column: 25}))
expect(selectionView.regions.length).toBe 3
expect(selectionView.find('.selection').length).toBe 3
selectionView.updateAppearance()
expect(selectionView.regions.length).toBe 3
expect(selectionView.find('.selection').length).toBe 3
describe "when a selection merges with another selection", ->
it "removes the merged selection view", ->
editSession = editor.activeEditSession
editSession.setCursorScreenPosition([4, 10])
editSession.selectToScreenPosition([5, 27])
editSession.addCursorAtScreenPosition([3, 10])
editSession.selectToScreenPosition([6, 27])
expect(editor.getSelectionViews().length).toBe 1
expect(editor.find('.selection').length).toBe 3
describe "cursor rendering", ->
describe "when the cursor moves", ->
charWidth = null
beforeEach ->
editor.attachToDom()
editor.vScrollMargin = 3
editor.hScrollMargin = 5
{charWidth} = editor
it "repositions the cursor's view on screen", ->
editor.setCursorScreenPosition(row: 2, column: 2)
expect(editor.getCursorView().position()).toEqual(top: 2 * editor.lineHeight, left: 2 * editor.charWidth)
it "removes the idle class while moving, then adds it back when it stops", ->
cursorView = editor.getCursorView()
advanceClock(200)
expect(cursorView).toHaveClass 'idle'
editor.setCursorScreenPosition([1, 2])
expect(cursorView).not.toHaveClass 'idle'
window.advanceClock(200)
expect(cursorView).toHaveClass 'idle'
editor.setCursorScreenPosition([1, 3])
advanceClock(100)
editor.setCursorScreenPosition([1, 4])
advanceClock(100)
expect(cursorView).not.toHaveClass 'idle'
advanceClock(100)
expect(cursorView).toHaveClass 'idle'
describe "auto-scrolling", ->
it "only auto-scrolls when the last cursor is moved", ->
editor.setCursorBufferPosition([11,0])
editor.addCursorAtBufferPosition([6,50])
[cursor1, cursor2] = editor.getCursors()
spyOn(editor, 'scrollTo')
cursor1.setScreenPosition([10, 10])
expect(editor.scrollTo).not.toHaveBeenCalled()
cursor2.setScreenPosition([11, 11])
expect(editor.scrollTo).toHaveBeenCalled()
describe "when the last cursor exceeds the upper or lower scroll margins", ->
describe "when the editor is taller than twice the vertical scroll margin", ->
it "sets the scrollTop so the cursor remains within the scroll margin", ->
setEditorHeightInLines(editor, 10)
_.times 6, -> editor.moveCursorDown()
expect(editor.scrollTop()).toBe(0)
editor.moveCursorDown()
expect(editor.scrollTop()).toBe(editor.lineHeight)
editor.moveCursorDown()
expect(editor.scrollTop()).toBe(editor.lineHeight * 2)
_.times 3, -> editor.moveCursorUp()
editor.moveCursorUp()
expect(editor.scrollTop()).toBe(editor.lineHeight)
editor.moveCursorUp()
expect(editor.scrollTop()).toBe(0)
describe "when the editor is shorter than twice the vertical scroll margin", ->
it "sets the scrollTop based on a reduced scroll margin, which prevents a jerky tug-of-war between upper and lower scroll margins", ->
setEditorHeightInLines(editor, 5)
_.times 3, -> editor.moveCursorDown()
expect(editor.scrollTop()).toBe(editor.lineHeight)
editor.moveCursorUp()
expect(editor.renderedLines.css('top')).toBe "0px"
describe "when the last cursor exceeds the right or left scroll margins", ->
describe "when soft-wrap is disabled", ->
describe "when the editor is wider than twice the horizontal scroll margin", ->
it "sets the scrollView's scrollLeft so the cursor remains within the scroll margin", ->
setEditorWidthInChars(editor, 30)
# moving right
editor.setCursorScreenPosition([2, 24])
expect(editor.scrollView.scrollLeft()).toBe 0
editor.setCursorScreenPosition([2, 25])
expect(editor.scrollView.scrollLeft()).toBe charWidth
editor.setCursorScreenPosition([2, 28])
expect(editor.scrollView.scrollLeft()).toBe charWidth * 4
# moving left
editor.setCursorScreenPosition([2, 9])
expect(editor.scrollView.scrollLeft()).toBe charWidth * 4
editor.setCursorScreenPosition([2, 8])
expect(editor.scrollView.scrollLeft()).toBe charWidth * 3
editor.setCursorScreenPosition([2, 5])
expect(editor.scrollView.scrollLeft()).toBe 0
describe "when the editor is narrower than twice the horizontal scroll margin", ->
it "sets the scrollView's scrollLeft based on a reduced horizontal scroll margin, to prevent a jerky tug-of-war between right and left scroll margins", ->
editor.hScrollMargin = 6
setEditorWidthInChars(editor, 7)
editor.setCursorScreenPosition([2, 3])
window.advanceClock()
expect(editor.scrollView.scrollLeft()).toBe(0)
editor.setCursorScreenPosition([2, 4])
window.advanceClock()
expect(editor.scrollView.scrollLeft()).toBe(charWidth)
editor.setCursorScreenPosition([2, 3])
window.advanceClock()
expect(editor.scrollView.scrollLeft()).toBe(0)
describe "when soft-wrap is enabled", ->
beforeEach ->
editor.setSoftWrap(true)
it "does not scroll the buffer horizontally", ->
editor.width(charWidth * 30)
# moving right
editor.setCursorScreenPosition([2, 24])
expect(editor.scrollView.scrollLeft()).toBe 0
editor.setCursorScreenPosition([2, 25])
expect(editor.scrollView.scrollLeft()).toBe 0
editor.setCursorScreenPosition([2, 28])
expect(editor.scrollView.scrollLeft()).toBe 0
# moving left
editor.setCursorScreenPosition([2, 9])
expect(editor.scrollView.scrollLeft()).toBe 0
editor.setCursorScreenPosition([2, 8])
expect(editor.scrollView.scrollLeft()).toBe 0
editor.setCursorScreenPosition([2, 5])
expect(editor.scrollView.scrollLeft()).toBe 0
describe "text rendering", ->
describe "when all lines in the buffer are visible on screen", ->
beforeEach ->
editor.attachToDom()
expect(editor.trueHeight()).toBeCloseTo buffer.getLineCount() * editor.lineHeight
it "creates a line element for each line in the buffer with the html-escaped text of the line", ->
expect(editor.renderedLines.find('.line').length).toEqual(buffer.getLineCount())
expect(buffer.lineForRow(2)).toContain('<')
expect(editor.renderedLines.find('.line:eq(2)').html()).toContain '&lt;'
# renders empty lines with a non breaking space
expect(buffer.lineForRow(10)).toBe ''
expect(editor.renderedLines.find('.line:eq(10)').html()).toBe '&nbsp;'
it "syntax highlights code based on the file type", ->
line1 = editor.renderedLines.find('.line:first')
expect(line1.find('span:eq(0)')).toMatchSelector '.storage-type-js'
expect(line1.find('span:eq(0)').text()).toBe 'var'
expect(line1.find('span:eq(1)')).toMatchSelector '.source-js'
expect(line1.find('span:eq(1)').text()).toBe ' '
expect(line1.find('span:eq(2)')).toMatchSelector '.entity-name-function-js'
expect(line1.find('span:eq(2)').text()).toBe 'quicksort'
expect(line1.find('span:eq(4)')).toMatchSelector '.keyword-operator-js'
expect(line1.find('span:eq(4)').text()).toBe '='
line12 = editor.renderedLines.find('.line:eq(11)')
expect(line12.find('span:eq(1)')).toMatchSelector '.keyword'
describe "when lines are updated in the buffer", ->
it "syntax highlights the updated lines", ->
expect(editor.renderedLines.find('.line:eq(0) span:eq(0)')).toMatchSelector '.storage-type-js'
buffer.insert([0, 0], "q")
expect(editor.renderedLines.find('.line:eq(0) span:eq(0)')).not.toMatchSelector '.storage-type-js'
# verify that re-highlighting can occur below the changed line
buffer.insert([5,0], "/* */")
buffer.insert([1,0], "/*")
expect(editor.renderedLines.find('.line:eq(2) span:eq(0)')).toMatchSelector '.comment'
describe "when soft-wrap is enabled", ->
beforeEach ->
setEditorHeightInLines(editor, 20)
setEditorWidthInChars(editor, 50)
editor.setSoftWrap(true)
expect(editor.activeEditSession.softWrapColumn).toBe 50
it "wraps lines that are too long to fit within the editor's width, adjusting cursor positioning accordingly", ->
expect(editor.renderedLines.find('.line').length).toBe 16
expect(editor.renderedLines.find('.line:eq(3)').text()).toBe " var pivot = items.shift(), current, left = [], "
expect(editor.renderedLines.find('.line:eq(4)').text()).toBe "right = [];"
editor.setCursorBufferPosition([3, 51])
expect(editor.find('.cursor').offset()).toEqual(editor.renderedLines.find('.line:eq(4)').offset())
editor.setCursorBufferPosition([4, 0])
expect(editor.find('.cursor').offset()).toEqual(editor.renderedLines.find('.line:eq(5)').offset())
editor.getSelection().setBufferRange(new Range([6, 30], [6, 55]))
[region1, region2] = editor.getSelectionView().regions
expect(region1.offset().top).toBeCloseTo(editor.renderedLines.find('.line:eq(7)').offset().top)
expect(region2.offset().top).toBeCloseTo(editor.renderedLines.find('.line:eq(8)').offset().top)
it "handles changes to wrapped lines correctly", ->
buffer.insert([6, 28], '1234567')
expect(editor.renderedLines.find('.line:eq(7)').text()).toBe ' current < pivot ? left1234567.push(current) '
expect(editor.renderedLines.find('.line:eq(8)').text()).toBe ': right.push(current);'
expect(editor.renderedLines.find('.line:eq(9)').text()).toBe ' }'
it "changes the max line length and repositions the cursor when the window size changes", ->
editor.setCursorBufferPosition([3, 60])
setEditorWidthInChars(editor, 40)
$(window).trigger 'resize'
expect(editor.renderedLines.find('.line').length).toBe 19
expect(editor.renderedLines.find('.line:eq(4)').text()).toBe "left = [], right = [];"
expect(editor.renderedLines.find('.line:eq(5)').text()).toBe " while(items.length > 0) {"
expect(editor.bufferPositionForScreenPosition(editor.getCursorScreenPosition())).toEqual [3, 60]
it "does not wrap the lines of any newly assigned buffers", ->
otherEditSession = rootView.project.buildEditSessionForPath()
otherEditSession.buffer.setText([1..100].join(''))
editor.edit(otherEditSession)
expect(editor.renderedLines.find('.line').length).toBe(1)
it "unwraps lines and cancels window resize listener when softwrap is disabled", ->
editor.toggleSoftWrap()
expect(editor.renderedLines.find('.line:eq(3)').text()).toBe ' var pivot = items.shift(), current, left = [], right = [];'
spyOn(editor, 'setSoftWrapColumn')
$(window).trigger 'resize'
expect(editor.setSoftWrapColumn).not.toHaveBeenCalled()
it "allows the cursor to move down to the last line", ->
_.times editor.getLastScreenRow(), -> editor.moveCursorDown()
expect(editor.getCursorScreenPosition()).toEqual [editor.getLastScreenRow(), 0]
editor.moveCursorDown()
expect(editor.getCursorScreenPosition()).toEqual [editor.getLastScreenRow(), 2]
it "allows the cursor to move up to a shorter soft wrapped line", ->
editor.setCursorScreenPosition([11, 15])
editor.moveCursorUp()
expect(editor.getCursorScreenPosition()).toEqual [10, 10]
editor.moveCursorUp()
editor.moveCursorUp()
expect(editor.getCursorScreenPosition()).toEqual [8, 15]
it "it allows the cursor to wrap when moving horizontally past the beginning / end of a wrapped line", ->
editor.setCursorScreenPosition([11, 0])
editor.moveCursorLeft()
expect(editor.getCursorScreenPosition()).toEqual [10, 10]
editor.moveCursorRight()
expect(editor.getCursorScreenPosition()).toEqual [11, 0]
it "calls .setSoftWrapColumn() when the editor is attached because now its dimensions are available to calculate it", ->
otherEditor = new Editor(editSession: rootView.project.buildEditSessionForPath('sample.js'))
spyOn(otherEditor, 'setSoftWrapColumn')
otherEditor.setSoftWrap(true)
expect(otherEditor.setSoftWrapColumn).not.toHaveBeenCalled()
otherEditor.simulateDomAttachment()
expect(otherEditor.setSoftWrapColumn).toHaveBeenCalled()
describe "when some lines at the end of the buffer are not visible on screen", ->
beforeEach ->
editor.attachToDom(heightInLines: 5.5)
it "only renders the visible lines plus the overdrawn lines, setting the padding-bottom of the lines element to account for the missing lines", ->
expect(editor.renderedLines.find('.line').length).toBe 8
expectedPaddingBottom = (buffer.getLineCount() - 8) * editor.lineHeight
expect(editor.renderedLines.css('padding-bottom')).toBe "#{expectedPaddingBottom}px"
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(7)
it "renders additional lines when the editor is resized", ->
setEditorHeightInLines(editor, 10)
$(window).trigger 'resize'
expect(editor.renderedLines.find('.line').length).toBe 12
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(11)
it "renders correctly when scrolling after text is added to the buffer", ->
editor.insertText("1\n")
_.times 4, -> editor.moveCursorDown()
expect(editor.renderedLines.find('.line:eq(2)').text()).toBe editor.lineForBufferRow(2)
expect(editor.renderedLines.find('.line:eq(7)').text()).toBe editor.lineForBufferRow(7)
it "renders correctly when scrolling after text is removed from buffer", ->
editor.getBuffer().delete([[0,0],[1,0]])
expect(editor.renderedLines.find('.line:eq(0)').text()).toBe editor.lineForBufferRow(0)
expect(editor.renderedLines.find('.line:eq(5)').text()).toBe editor.lineForBufferRow(5)
editor.scrollTop(3 * editor.lineHeight)
expect(editor.renderedLines.find('.line:first').text()).toBe editor.lineForBufferRow(1)
expect(editor.renderedLines.find('.line:last').text()).toBe editor.lineForBufferRow(10)
describe "when creating and destroying folds that are longer than the visible lines", ->
describe "when the cursor precedes the fold when it is destroyed", ->
it "renders lines and line numbers correctly", ->
scrollHeightBeforeFold = editor.scrollView.prop('scrollHeight')
fold = editor.createFold(1, 9)
fold.destroy()
expect(editor.scrollView.prop('scrollHeight')).toBe scrollHeightBeforeFold
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(7)
expect(editor.gutter.find('.line-number').length).toBe 8
expect(editor.gutter.find('.line-number:last').text()).toBe '8'
editor.scrollTop(4 * editor.lineHeight)
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(11)
describe "when the cursor follows the fold when it is destroyed", ->
it "renders lines and line numbers correctly", ->
fold = editor.createFold(1, 9)
editor.setCursorBufferPosition([10, 0])
fold.destroy()
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(12)
expect(editor.gutter.find('.line-number').length).toBe 8
expect(editor.gutter.find('.line-number:last').text()).toBe '13'
editor.scrollTop(4 * editor.lineHeight)
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(11)
describe "when scrolling vertically", ->
describe "when scrolling less than the editor's height", ->
it "draws new lines and removes old lines when the last visible line will exceed the last rendered line", ->
expect(editor.renderedLines.find('.line').length).toBe 8
editor.scrollTop(editor.lineHeight * 1.5)
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(7)
editor.scrollTop(editor.lineHeight * 3.5) # first visible row will be 3, last will be 8
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(1)
expect(editor.renderedLines.find('.line:last').html()).toBe '&nbsp;' # line 10 is blank
expect(editor.gutter.find('.line-number:first').text()).toBe '2'
expect(editor.gutter.find('.line-number:last').text()).toBe '11'
# here we don't scroll far enough to trigger additional rendering
editor.scrollTop(editor.lineHeight * 5.5) # first visible row will be 5, last will be 10
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(1)
expect(editor.renderedLines.find('.line:last').html()).toBe '&nbsp;' # line 10 is blank
expect(editor.gutter.find('.line-number:first').text()).toBe '2'
expect(editor.gutter.find('.line-number:last').text()).toBe '11'
editor.scrollTop(editor.lineHeight * 7.5) # first visible row is 7, last will be 12
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(5)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(12)
editor.scrollTop(editor.lineHeight * 3.5) # first visible row will be 3, last will be 8
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(1)
expect(editor.renderedLines.find('.line:last').html()).toBe '&nbsp;' # line 10 is blank
editor.scrollTop(0)
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(7)
describe "when scrolling more than the editors height", ->
it "removes lines that are offscreen and not in range of the overdraw and builds lines that become visible", ->
editor.scrollTop(editor.scrollView.prop('scrollHeight') - editor.scrollView.height())
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(5)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(12)
editor.verticalScrollbar.scrollBottom(0)
editor.verticalScrollbar.trigger 'scroll'
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.renderedLines.find('.line:first').text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find('.line:last').text()).toBe buffer.lineForRow(7)
it "adjusts the vertical padding of the lines element to account for non-rendered lines", ->
editor.scrollTop(editor.lineHeight * 3)
firstVisibleBufferRow = 3
expectedPaddingTop = (firstVisibleBufferRow - editor.lineOverdraw) * editor.lineHeight
expect(editor.renderedLines.css('padding-top')).toBe "#{expectedPaddingTop}px"
lastVisibleBufferRow = Math.ceil(3 + 5.5) # scroll top in lines + height in lines
lastOverdrawnRow = lastVisibleBufferRow + editor.lineOverdraw
expectedPaddingBottom = ((buffer.getLineCount() - lastOverdrawnRow) * editor.lineHeight)
expect(editor.renderedLines.css('padding-bottom')).toBe "#{expectedPaddingBottom}px"
editor.scrollToBottom()
# scrolled to bottom, first visible row is 5 and first rendered row is 3
firstVisibleBufferRow = Math.floor(buffer.getLineCount() - 5.5)
firstOverdrawnBufferRow = firstVisibleBufferRow - editor.lineOverdraw
expectedPaddingTop = firstOverdrawnBufferRow * editor.lineHeight
expect(editor.renderedLines.css('padding-top')).toBe "#{expectedPaddingTop}px"
expect(editor.renderedLines.css('padding-bottom')).toBe "0px"
describe "when lines are added", ->
beforeEach ->
editor.attachToDom(heightInLines: 5)
spyOn(editor, "scrollTo")
describe "when the change the precedes the first rendered row", ->
it "inserts and removes rendered lines to account for upstream change", ->
editor.scrollToBottom()
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(12)
buffer.change([[1,0], [3,0]], "1\n2\n3\n")
expect(editor.renderedLines.find(".line").length).toBe 8
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(13)
describe "when the change straddles the first rendered row", ->
it "doesn't render rows that were not previously rendered", ->
editor.scrollToBottom()
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(12)
buffer.change([[2,0], [7,0]], "2\n3\n4\n5\n6\n7\n8\n9\n")
expect(editor.renderedLines.find(".line").length).toBe 9
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(14)
describe "when the change straddles the last rendered row", ->
it "doesn't render rows that were not previously rendered", ->
buffer.change([[2,0], [7,0]], "2\n3\n4\n5\n6\n7\n8\n")
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(6)
describe "when the change the follows the last rendered row", ->
it "does not change the rendered lines", ->
buffer.change([[12,0], [12,0]], "12\n13\n14\n")
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(6)
it "increases the width of the rendered lines element to be either the width of the longest line or the width of the scrollView (whichever is longer)", ->
maxLineLength = editor.maxScreenLineLength()
setEditorWidthInChars(editor, maxLineLength)
widthBefore = editor.renderedLines.width()
expect(widthBefore).toBe editor.scrollView.width()
buffer.change([[12,0], [12,0]], [1..maxLineLength*2].join(''))
expect(editor.renderedLines.width()).toBeGreaterThan widthBefore
describe "when lines are removed", ->
beforeEach ->
editor.attachToDom(heightInLines: 5)
spyOn(editor, "scrollTo")
it "sets the rendered screen line's width to either the max line length or the scollView's width (whichever is greater)", ->
maxLineLength = editor.maxScreenLineLength()
setEditorWidthInChars(editor, maxLineLength)
buffer.change([[12,0], [12,0]], [1..maxLineLength*2].join(''))
expect(editor.renderedLines.width()).toBeGreaterThan editor.scrollView.width()
widthBefore = editor.renderedLines.width()
buffer.delete([[12, 0], [12, Infinity]])
expect(editor.renderedLines.width()).toBe editor.scrollView.width()
describe "when the change the precedes the first rendered row", ->
it "removes rendered lines to account for upstream change", ->
editor.scrollToBottom()
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(12)
buffer.change([[1,0], [2,0]], "")
expect(editor.renderedLines.find(".line").length).toBe 6
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(11)
describe "when the change straddles the first rendered row", ->
it "renders the correct rows", ->
editor.scrollToBottom()
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(12)
buffer.change([[7,0], [11,0]], "1\n2\n")
expect(editor.renderedLines.find(".line").length).toBe 5
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(6)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(10)
describe "when the change straddles the last rendered row", ->
it "renders the correct rows", ->
buffer.change([[2,0], [7,0]], "")
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(6)
describe "when the change the follows the last rendered row", ->
it "does not change the rendered lines", ->
buffer.change([[10,0], [12,0]], "")
expect(editor.renderedLines.find(".line").length).toBe 7
expect(editor.renderedLines.find(".line:first").text()).toBe buffer.lineForRow(0)
expect(editor.renderedLines.find(".line:last").text()).toBe buffer.lineForRow(6)
describe "when the last line is removed when the editor is scrolled to the bottom", ->
it "reduces the editor's scrollTop (due to the reduced total scroll height) and renders the correct screen lines", ->
editor.setCursorScreenPosition([Infinity, Infinity])
editor.insertText('\n\n\n')
editor.scrollToBottom()
expect(buffer.getLineCount()).toBe 16
initialScrollTop = editor.scrollTop()
expect(editor.firstRenderedScreenRow).toBe 9
expect(editor.lastRenderedScreenRow).toBe 15
editor.backspace()
expect(editor.scrollTop()).toBeLessThan initialScrollTop
expect(editor.firstRenderedScreenRow).toBe 9
expect(editor.lastRenderedScreenRow).toBe 14
expect(editor.find('.line').length).toBe 6
editor.backspace()
expect(editor.firstRenderedScreenRow).toBe 9
expect(editor.lastRenderedScreenRow).toBe 13
expect(editor.find('.line').length).toBe 5
editor.backspace()
expect(editor.firstRenderedScreenRow).toBe 6
expect(editor.lastRenderedScreenRow).toBe 12
expect(editor.find('.line').length).toBe 7
describe "when folding leaves less then a screen worth of text (regression)", ->
it "renders lines properly", ->
editor.lineOverdraw = 1
editor.attachToDom(heightInLines: 5)
editor.activeEditSession.foldBufferRow(4)
editor.activeEditSession.foldBufferRow(0)
expect(editor.renderedLines.find('.line').length).toBe 1
expect(editor.renderedLines.find('.line').text()).toBe buffer.lineForRow(0)
describe "when autoscrolling at the end of the document", ->
it "renders lines properly", ->
editor.edit(rootView.project.buildEditSessionForPath('two-hundred.txt'))
editor.attachToDom(heightInLines: 5.5)
expect(editor.renderedLines.find('.line').length).toBe 8
editor.moveCursorToBottom()
expect(editor.renderedLines.find('.line').length).toBe 8
describe "when line has a character that could push it to be too tall (regression)", ->
it "does renders the line at a consistent height", ->
rootView.attachToDom()
buffer.insert([0, 0], "")
expect(editor.find('.line:eq(0)').outerHeight()).toBe editor.find('.line:eq(1)').outerHeight()
describe ".spliceLineElements(startRow, rowCount, lineElements)", ->
elements = null
beforeEach ->
editor.attachToDom()
elements = $$ ->
@div "A", class: 'line'
@div "B", class: 'line'
describe "when the start row is 0", ->
describe "when the row count is 0", ->
it "inserts the given elements before the first row", ->
editor.spliceLineElements 0, 0, elements
expect(editor.renderedLines.find('.line:eq(0)').text()).toBe 'A'
expect(editor.renderedLines.find('.line:eq(1)').text()).toBe 'B'
expect(editor.renderedLines.find('.line:eq(2)').text()).toBe 'var quicksort = function () {'
describe "when the row count is > 0", ->
it "replaces the initial rows with the given elements", ->
editor.spliceLineElements 0, 2, elements
expect(editor.renderedLines.find('.line:eq(0)').text()).toBe 'A'
expect(editor.renderedLines.find('.line:eq(1)').text()).toBe 'B'
expect(editor.renderedLines.find('.line:eq(2)').text()).toBe ' if (items.length <= 1) return items;'
describe "when the start row is less than the last row", ->
describe "when the row count is 0", ->
it "inserts the elements at the specified location", ->
editor.spliceLineElements 2, 0, elements
expect(editor.renderedLines.find('.line:eq(2)').text()).toBe 'A'
expect(editor.renderedLines.find('.line:eq(3)').text()).toBe 'B'
expect(editor.renderedLines.find('.line:eq(4)').text()).toBe ' if (items.length <= 1) return items;'
describe "when the row count is > 0", ->
it "replaces the elements at the specified location", ->
editor.spliceLineElements 2, 2, elements
expect(editor.renderedLines.find('.line:eq(2)').text()).toBe 'A'
expect(editor.renderedLines.find('.line:eq(3)').text()).toBe 'B'
expect(editor.renderedLines.find('.line:eq(4)').text()).toBe ' while(items.length > 0) {'
describe "when the start row is the last row", ->
it "appends the elements to the end of the lines", ->
editor.spliceLineElements 13, 0, elements
expect(editor.renderedLines.find('.line:eq(12)').text()).toBe '};'
expect(editor.renderedLines.find('.line:eq(13)').text()).toBe 'A'
expect(editor.renderedLines.find('.line:eq(14)').text()).toBe 'B'
expect(editor.renderedLines.find('.line:eq(15)')).not.toExist()
describe "gutter rendering", ->
beforeEach ->
editor.attachToDom(heightInLines: 5.5)
it "creates a line number element for each visible line, plus overdraw", ->
expect(editor.gutter.find('.line-number').length).toBe 8
expect(editor.find('.line-number:first').text()).toBe "1"
expect(editor.gutter.find('.line-number:last').text()).toBe "8"
# here we don't scroll far enough to trigger additional rendering
editor.scrollTop(editor.lineHeight * 1.5)
expect(editor.renderedLines.find('.line').length).toBe 8
expect(editor.gutter.find('.line-number:first').text()).toBe "1"
expect(editor.gutter.find('.line-number:last').text()).toBe "8"
editor.scrollTop(editor.lineHeight * 3.5)
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.gutter.find('.line-number:first').text()).toBe "2"
expect(editor.gutter.find('.line-number:last').text()).toBe "11"
describe "width", ->
it "sets the width based on largest line number", ->
expect(editor.gutter.lineNumbers.outerWidth()).toBe editor.charWidth * 2
it "updates the width and the left position of the scroll view when total number of lines gains a digit", ->
editor.setText("")
expect(editor.gutter.lineNumbers.outerWidth()).toBe editor.charWidth * 1
expect(parseInt(editor.scrollView.css('left'))).toBe editor.gutter.outerWidth()
for i in [1..9] # Ends on an empty line 10
editor.insertText "#{i}\n"
expect(editor.gutter.lineNumbers.outerWidth()).toBe editor.charWidth * 2
expect(parseInt(editor.scrollView.css('left'))).toBe editor.gutter.outerWidth()
describe "when lines are inserted", ->
it "re-renders the correct line number range in the gutter", ->
spyOn(editor, 'scrollTo')
editor.scrollTop(3 * editor.lineHeight)
expect(editor.gutter.find('.line-number:first').text()).toBe '2'
expect(editor.gutter.find('.line-number:last').text()).toBe '11'
buffer.insert([6, 0], '\n')
expect(editor.gutter.find('.line-number:first').text()).toBe '2'
expect(editor.gutter.find('.line-number:last').text()).toBe '11'
describe "when the insertion of lines causes the editor to scroll", ->
it "renders line numbers correctly", ->
oneHundredLines = [0..100].join("\n")
editor.insertText(oneHundredLines)
expect(editor.gutter.lineNumbers.find('.line-number').length).toBe 6 + editor.lineOverdraw * 2
describe "when wrapping is on", ->
it "renders a • instead of line number for wrapped portions of lines", ->
editor.setSoftWrapColumn(50)
expect(editor.gutter.find('.line-number').length).toEqual(8)
expect(editor.gutter.find('.line-number:eq(3)').text()).toBe '4'
expect(editor.gutter.find('.line-number:eq(4)').text()).toBe ''
expect(editor.gutter.find('.line-number:eq(5)').text()).toBe '5'
describe "when there are folds", ->
it "skips line numbers covered by the fold and updates them when the fold changes", ->
editor.createFold(3, 5)
expect(editor.gutter.find('.line-number:eq(3)').text()).toBe '4'
expect(editor.gutter.find('.line-number:eq(4)').text()).toBe '7'
buffer.insert([4,0], "\n\n")
expect(editor.gutter.find('.line-number:eq(3)').text()).toBe '4'
expect(editor.gutter.find('.line-number:eq(4)').text()).toBe '9'
buffer.delete([[3,0], [6,0]])
expect(editor.gutter.find('.line-number:eq(3)').text()).toBe '4'
expect(editor.gutter.find('.line-number:eq(4)').text()).toBe '6'
it "redraws gutter numbers when lines are unfolded", ->
setEditorHeightInLines(editor, 20)
fold = editor.createFold(2, 12)
expect(editor.gutter.find('.line-number').length).toBe 3
fold.destroy()
expect(editor.gutter.find('.line-number').length).toBe 13
describe "when the scrollView is scrolled to the right", ->
it "adds a drop shadow to the gutter", ->
editor.attachToDom()
editor.width(100)
expect(editor.gutter).not.toHaveClass('drop-shadow')
editor.scrollView.scrollLeft(10)
editor.scrollView.trigger('scroll')
expect(editor.gutter).toHaveClass('drop-shadow')
editor.scrollView.scrollLeft(0)
editor.scrollView.trigger('scroll')
expect(editor.gutter).not.toHaveClass('drop-shadow')
describe "when the editor is scrolled vertically", ->
it "adjusts the padding-top to account for non-rendered line numbers", ->
editor.scrollTop(editor.lineHeight * 3.5)
expect(editor.gutter.lineNumbers.css('padding-top')).toBe "#{editor.lineHeight * 1}px"
expect(editor.gutter.lineNumbers.css('padding-bottom')).toBe "#{editor.lineHeight * 2}px"
expect(editor.renderedLines.find('.line').length).toBe 10
expect(editor.gutter.find('.line-number:first').text()).toBe "2"
expect(editor.gutter.find('.line-number:last').text()).toBe "11"
describe "when the editor is mini", ->
it "hides the gutter and does not change the scroll view's left position", ->
miniEditor = new Editor(mini: true)
miniEditor.attachToDom()
expect(miniEditor.gutter).toBeHidden()
expect(miniEditor.scrollView.css('left')).toBe '0px'
describe "folding", ->
beforeEach ->
editSession = rootView.project.buildEditSessionForPath('two-hundred.txt')
buffer = editSession.buffer
editor.edit(editSession)
editor.attachToDom()
describe "when a fold-selection event is triggered", ->
it "folds the lines covered by the selection into a single line with a fold class", ->
editor.getSelection().setBufferRange(new Range([4, 29], [7, 4]))
editor.trigger 'fold-selection'
expect(editor.renderedLines.find('.line:eq(4)')).toHaveClass('fold')
expect(editor.renderedLines.find('.line:eq(5)').text()).toBe '8'
expect(editor.getSelection().isEmpty()).toBeTruthy()
expect(editor.getCursorScreenPosition()).toEqual [5, 0]
describe "when a fold placeholder line is clicked", ->
it "removes the associated fold and places the cursor at its beginning", ->
editor.setCursorBufferPosition([3,0])
editor.trigger 'fold-current-row'
editor.find('.fold.line').mousedown()
expect(editor.find('.fold')).not.toExist()
expect(editor.renderedLines.find('.line:eq(4)').text()).toMatch /4-+/
expect(editor.renderedLines.find('.line:eq(5)').text()).toMatch /5/
expect(editor.getCursorBufferPosition()).toEqual [3, 0]
describe "when the unfold-current-row event is triggered when the cursor is on a fold placeholder line", ->
it "removes the associated fold and places the cursor at its beginning", ->
editor.setCursorBufferPosition([3,0])
editor.trigger 'fold-current-row'
editor.setCursorBufferPosition([3,0])
editor.trigger 'unfold-current-row'
expect(editor.find('.fold')).not.toExist()
expect(editor.renderedLines.find('.line:eq(4)').text()).toMatch /4-+/
expect(editor.renderedLines.find('.line:eq(5)').text()).toMatch /5/
expect(editor.getCursorBufferPosition()).toEqual [3, 0]
describe "when a selection starts/stops intersecting a fold", ->
it "adds/removes the 'selected' class to the fold's line element and hides the cursor if it is on the fold line", ->
editor.createFold(2, 4)
editor.setSelectedBufferRange([[1, 0], [2, 0]], preserveFolds: true, reverse: true)
expect(editor.lineElementForScreenRow(2)).toMatchSelector('.fold.selected')
editor.setSelectedBufferRange([[1, 0], [1, 1]], preserveFolds: true)
expect(editor.lineElementForScreenRow(2)).not.toMatchSelector('.fold.selected')
editor.setSelectedBufferRange([[1, 0], [5, 0]], preserveFolds: true)
expect(editor.lineElementForScreenRow(2)).toMatchSelector('.fold.selected')
editor.setCursorScreenPosition([3,0])
expect(editor.lineElementForScreenRow(2)).not.toMatchSelector('.fold.selected')
editor.setCursorScreenPosition([2,0])
expect(editor.lineElementForScreenRow(2)).toMatchSelector('.fold.selected')
expect(editor.find('.cursor').css('display')).toBe 'none'
editor.setCursorScreenPosition([3,0])
expect(editor.find('.cursor').css('display')).toBe 'block'
describe "when a selected fold is scrolled into view (and the fold line was not previously rendered)", ->
it "renders the fold's line element with the 'selected' class", ->
setEditorHeightInLines(editor, 5)
editor.renderLines() # re-render lines so certain lines are not rendered
editor.createFold(2, 4)
editor.setSelectedBufferRange([[1, 0], [5, 0]], preserveFolds: true)
expect(editor.renderedLines.find('.fold.selected')).toExist()
editor.scrollToBottom()
expect(editor.renderedLines.find('.fold.selected')).not.toExist()
editor.scrollTop(0)
expect(editor.lineElementForScreenRow(2)).toMatchSelector('.fold.selected')
describe ".getOpenBufferPaths()", ->
it "returns the paths of all non-anonymous buffers with edit sessions on this editor", ->
editor.edit(project.buildEditSessionForPath('sample.txt'))
editor.edit(project.buildEditSessionForPath('two-hundred.txt'))
editor.edit(project.buildEditSessionForPath())
paths = editor.getOpenBufferPaths().map (path) -> project.relativize(path)
expect(paths).toEqual = ['sample.js', 'sample.txt', 'two-hundred.txt']
describe "paging up and down", ->
beforeEach ->
editor.attachToDom()
it "moves to the last line when page down is repeated from the first line", ->
rows = editor.getLineCount() - 1
expect(rows).toBeGreaterThan(0)
row = editor.getCursor(0).getScreenPosition().row
expect(row).toBe(0)
while row < rows
editor.pageDown()
newRow = editor.getCursor(0).getScreenPosition().row
expect(newRow).toBeGreaterThan(row)
if (newRow <= row)
break
row = newRow
expect(row).toBe(rows)
expect(editor.getLastVisibleScreenRow()).toBe(rows)
it "moves to the first line when page up is repeated from the last line", ->
editor.moveCursorToBottom()
row = editor.getCursor().getScreenPosition().row
expect(row).toBeGreaterThan(0)
while row > 0
editor.pageUp()
newRow = editor.getCursor().getScreenPosition().row
expect(newRow).toBeLessThan(row)
if (newRow >= row)
break
row = newRow
expect(row).toBe(0)
expect(editor.getFirstVisibleScreenRow()).toBe(0)
it "resets to original position when down is followed by up", ->
expect(editor.getCursor().getScreenPosition().row).toBe(0)
editor.pageDown()
expect(editor.getCursor().getScreenPosition().row).toBeGreaterThan(0)
editor.pageUp()
expect(editor.getCursor().getScreenPosition().row).toBe(0)
expect(editor.getFirstVisibleScreenRow()).toBe(0)