pulsar/spec/text-editor-component-spec.js
2017-05-05 09:29:28 +02:00

1770 lines
79 KiB
JavaScript

/** @babel */
import {it, fit, ffit, fffit, beforeEach, afterEach, conditionPromise} from './async-spec-helpers'
const TextEditorComponent = require('../src/text-editor-component')
const TextEditor = require('../src/text-editor')
const TextBuffer = require('text-buffer')
const fs = require('fs')
const path = require('path')
const SAMPLE_TEXT = fs.readFileSync(path.join(__dirname, 'fixtures', 'sample.js'), 'utf8')
const NBSP_CHARACTER = '\u00a0'
document.registerElement('text-editor-component-test-element', {
prototype: Object.create(HTMLElement.prototype, {
attachedCallback: {
value: function () {
this.didAttach()
}
}
})
})
describe('TextEditorComponent', () => {
beforeEach(() => {
jasmine.useRealClock()
})
describe('rendering', () => {
it('renders lines and line numbers for the visible region', async () => {
const {component, element, editor} = buildComponent({rowsPerTile: 3, autoHeight: false})
expect(element.querySelectorAll('.line-number').length).toBe(13)
expect(element.querySelectorAll('.line').length).toBe(13)
element.style.height = 4 * component.measurements.lineHeight + 'px'
await component.getNextUpdatePromise()
expect(element.querySelectorAll('.line-number').length).toBe(9)
expect(element.querySelectorAll('.line').length).toBe(9)
await setScrollTop(component, 5 * component.getLineHeight())
// After scrolling down beyond > 3 rows, the order of line numbers and lines
// in the DOM is a bit weird because the first tile is recycled to the bottom
// when it is scrolled out of view
expect(Array.from(element.querySelectorAll('.line-number')).map(element => element.textContent.trim())).toEqual([
'10', '11', '12', '4', '5', '6', '7', '8', '9'
])
expect(Array.from(element.querySelectorAll('.line')).map(element => element.textContent)).toEqual([
editor.lineTextForScreenRow(9),
' ', // this line is blank in the model, but we render a space to prevent the line from collapsing vertically
editor.lineTextForScreenRow(11),
editor.lineTextForScreenRow(3),
editor.lineTextForScreenRow(4),
editor.lineTextForScreenRow(5),
editor.lineTextForScreenRow(6),
editor.lineTextForScreenRow(7),
editor.lineTextForScreenRow(8)
])
await setScrollTop(component, 2.5 * component.getLineHeight())
expect(Array.from(element.querySelectorAll('.line-number')).map(element => element.textContent.trim())).toEqual([
'1', '2', '3', '4', '5', '6', '7', '8', '9'
])
expect(Array.from(element.querySelectorAll('.line')).map(element => element.textContent)).toEqual([
editor.lineTextForScreenRow(0),
editor.lineTextForScreenRow(1),
editor.lineTextForScreenRow(2),
editor.lineTextForScreenRow(3),
editor.lineTextForScreenRow(4),
editor.lineTextForScreenRow(5),
editor.lineTextForScreenRow(6),
editor.lineTextForScreenRow(7),
editor.lineTextForScreenRow(8)
])
})
it('bases the width of the lines div on the width of the longest initially-visible screen line', () => {
const {component, element, editor} = buildComponent({rowsPerTile: 2, height: 20})
expect(editor.getApproximateLongestScreenRow()).toBe(3)
const expectedWidth = element.querySelectorAll('.line')[3].offsetWidth
expect(element.querySelector('.lines').style.width).toBe(expectedWidth + 'px')
// TODO: Confirm that we'll update this value as indexing proceeds
})
it('honors the scrollPastEnd option by adding empty space equivalent to the clientHeight to the end of the content area', async () => {
const {component, element, editor} = buildComponent({autoHeight: false, autoWidth: false})
const {scrollContainer} = component.refs
await editor.update({scrollPastEnd: true})
await setEditorHeightInLines(component, 6)
// scroll to end
await setScrollTop(component, scrollContainer.scrollHeight - scrollContainer.clientHeight)
expect(component.getFirstVisibleRow()).toBe(editor.getScreenLineCount() - 3)
editor.update({scrollPastEnd: false})
await component.getNextUpdatePromise() // wait for scrollable content resize
expect(component.getFirstVisibleRow()).toBe(editor.getScreenLineCount() - 6)
// Always allows at least 3 lines worth of overscroll if the editor is short
await setEditorHeightInLines(component, 2)
await editor.update({scrollPastEnd: true})
await setScrollTop(component, scrollContainer.scrollHeight - scrollContainer.clientHeight)
expect(component.getFirstVisibleRow()).toBe(editor.getScreenLineCount() + 1)
})
it('gives the line number gutter an explicit width and height so its layout can be strictly contained', () => {
const {component, element, editor} = buildComponent({rowsPerTile: 3})
const gutterElement = element.querySelector('.gutter.line-numbers')
expect(gutterElement.style.width).toBe(element.querySelector('.line-number').offsetWidth + 'px')
expect(gutterElement.style.height).toBe(editor.getScreenLineCount() * component.measurements.lineHeight + 'px')
expect(gutterElement.style.contain).toBe('strict')
// Tile nodes also have explicit width and height assignment
expect(gutterElement.firstChild.style.width).toBe(element.querySelector('.line-number').offsetWidth + 'px')
expect(gutterElement.firstChild.style.height).toBe(3 * component.measurements.lineHeight + 'px')
expect(gutterElement.firstChild.style.contain).toBe('strict')
})
it('renders dummy vertical and horizontal scrollbars when content overflows', async () => {
const {component, element, editor} = buildComponent({height: 100, width: 100})
const verticalScrollbar = component.refs.verticalScrollbar.element
const horizontalScrollbar = component.refs.horizontalScrollbar.element
expect(verticalScrollbar.scrollHeight).toBe(component.getContentHeight())
expect(horizontalScrollbar.scrollWidth).toBe(component.getContentWidth())
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(0)
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(0)
expect(verticalScrollbar.style.bottom).toBe(getVerticalScrollbarWidth(component) + 'px')
expect(horizontalScrollbar.style.right).toBe(getHorizontalScrollbarHeight(component) + 'px')
expect(component.refs.scrollbarCorner).toBeDefined()
setScrollTop(component, 100)
await setScrollLeft(component, 100)
expect(verticalScrollbar.scrollTop).toBe(100)
expect(horizontalScrollbar.scrollLeft).toBe(100)
verticalScrollbar.scrollTop = 120
horizontalScrollbar.scrollLeft = 120
await component.getNextUpdatePromise()
expect(component.getScrollTop()).toBe(120)
expect(component.getScrollLeft()).toBe(120)
editor.setText('a\n'.repeat(15))
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(0)
expect(getHorizontalScrollbarHeight(component)).toBe(0)
expect(verticalScrollbar.style.bottom).toBe('0px')
expect(component.refs.scrollbarCorner).toBeUndefined()
editor.setText('a'.repeat(100))
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBe(0)
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(0)
expect(horizontalScrollbar.style.right).toBe('0px')
expect(component.refs.scrollbarCorner).toBeUndefined()
editor.setText('')
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBe(0)
expect(getHorizontalScrollbarHeight(component)).toBe(0)
expect(component.refs.scrollbarCorner).toBeUndefined()
editor.setText(SAMPLE_TEXT)
await component.getNextUpdatePromise()
// Does not show scrollbars if the content perfectly fits
element.style.width = component.getGutterContainerWidth() + component.getContentWidth() + 'px'
element.style.height = component.getContentHeight() + 'px'
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBe(0)
expect(getHorizontalScrollbarHeight(component)).toBe(0)
// Shows scrollbars if the only reason we overflow is the presence of the
// scrollbar for the opposite axis.
element.style.width = component.getGutterContainerWidth() + component.getContentWidth() - 1 + 'px'
element.style.height = component.getContentHeight() + component.getHorizontalScrollbarHeight() - 1 + 'px'
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(0)
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(0)
element.style.width = component.getGutterContainerWidth() + component.getContentWidth() + component.getVerticalScrollbarWidth() - 1 + 'px'
element.style.height = component.getContentHeight() - 1 + 'px'
await component.getNextUpdatePromise()
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(0)
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(0)
})
it('updates the bottom/right of dummy scrollbars and client height/width measurements when scrollbar styles change', async () => {
const {component, element, editor} = buildComponent({height: 100, width: 100})
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(10)
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(10)
const style = document.createElement('style')
style.textContent = '::-webkit-scrollbar { height: 10px; width: 10px; }'
jasmine.attachToDOM(style)
TextEditor.didUpdateScrollbarStyles()
await component.getNextUpdatePromise()
expect(getHorizontalScrollbarHeight(component)).toBe(10)
expect(getVerticalScrollbarWidth(component)).toBe(10)
expect(component.refs.horizontalScrollbar.element.style.right).toBe('10px')
expect(component.refs.verticalScrollbar.element.style.bottom).toBe('10px')
expect(component.getScrollContainerClientHeight()).toBe(100 - 10)
expect(component.getScrollContainerClientWidth()).toBe(100 - component.getGutterContainerWidth() - 10)
})
it('renders cursors within the visible row range', async () => {
const {component, element, editor} = buildComponent({height: 40, rowsPerTile: 2})
await setScrollTop(component, 100)
expect(component.getRenderedStartRow()).toBe(4)
expect(component.getRenderedEndRow()).toBe(10)
editor.setCursorScreenPosition([0, 0], {autoscroll: false}) // out of view
editor.addCursorAtScreenPosition([2, 2], {autoscroll: false}) // out of view
editor.addCursorAtScreenPosition([4, 0], {autoscroll: false}) // line start
editor.addCursorAtScreenPosition([4, 4], {autoscroll: false}) // at token boundary
editor.addCursorAtScreenPosition([4, 6], {autoscroll: false}) // within token
editor.addCursorAtScreenPosition([5, Infinity], {autoscroll: false}) // line end
editor.addCursorAtScreenPosition([10, 2], {autoscroll: false}) // out of view
await component.getNextUpdatePromise()
let cursorNodes = Array.from(element.querySelectorAll('.cursor'))
expect(cursorNodes.length).toBe(4)
verifyCursorPosition(component, cursorNodes[0], 4, 0)
verifyCursorPosition(component, cursorNodes[1], 4, 4)
verifyCursorPosition(component, cursorNodes[2], 4, 6)
verifyCursorPosition(component, cursorNodes[3], 5, 30)
editor.setCursorScreenPosition([8, 11], {autoscroll: false})
await component.getNextUpdatePromise()
cursorNodes = Array.from(element.querySelectorAll('.cursor'))
expect(cursorNodes.length).toBe(1)
verifyCursorPosition(component, cursorNodes[0], 8, 11)
editor.setCursorScreenPosition([0, 0], {autoscroll: false})
await component.getNextUpdatePromise()
cursorNodes = Array.from(element.querySelectorAll('.cursor'))
expect(cursorNodes.length).toBe(0)
editor.setSelectedScreenRange([[8, 0], [12, 0]], {autoscroll: false})
await component.getNextUpdatePromise()
cursorNodes = Array.from(element.querySelectorAll('.cursor'))
expect(cursorNodes.length).toBe(0)
})
it('places the hidden input element at the location of the last cursor if it is visible', async () => {
const {component, element, editor} = buildComponent({height: 60, width: 120, rowsPerTile: 2})
const {hiddenInput} = component.refs
setScrollTop(component, 100)
await setScrollLeft(component, 40)
expect(component.getRenderedStartRow()).toBe(4)
expect(component.getRenderedEndRow()).toBe(12)
// When out of view, the hidden input is positioned at 0, 0
expect(editor.getCursorScreenPosition()).toEqual([0, 0])
expect(hiddenInput.offsetTop).toBe(0)
expect(hiddenInput.offsetLeft).toBe(0)
// Otherwise it is positioned at the last cursor position
editor.addCursorAtScreenPosition([7, 4])
await component.getNextUpdatePromise()
expect(hiddenInput.getBoundingClientRect().top).toBe(clientTopForLine(component, 7))
expect(Math.round(hiddenInput.getBoundingClientRect().left)).toBe(clientLeftForCharacter(component, 7, 4))
})
it('soft wraps lines based on the content width when soft wrap is enabled', async () => {
const {component, element, editor} = buildComponent({width: 435, attach: false})
editor.setSoftWrapped(true)
jasmine.attachToDOM(element)
expect(getBaseCharacterWidth(component)).toBe(55)
expect(lineNodeForScreenRow(component, 3).textContent).toBe(
' var pivot = items.shift(), current, left = [], '
)
expect(lineNodeForScreenRow(component, 4).textContent).toBe(
' right = [];'
)
await setEditorWidthInCharacters(component, 45)
expect(lineNodeForScreenRow(component, 3).textContent).toBe(
' var pivot = items.shift(), current, left '
)
expect(lineNodeForScreenRow(component, 4).textContent).toBe(
' = [], right = [];'
)
const {scrollContainer} = component.refs
expect(scrollContainer.clientWidth).toBe(scrollContainer.scrollWidth)
})
it('decorates the line numbers of folded lines', async () => {
const {component, element, editor} = buildComponent()
editor.foldBufferRow(1)
await component.getNextUpdatePromise()
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('folded')).toBe(true)
})
it('makes lines at least as wide as the scrollContainer', async () => {
const {component, element, editor} = buildComponent()
const {scrollContainer, gutterContainer} = component.refs
editor.setText('a')
await component.getNextUpdatePromise()
expect(element.querySelector('.line').offsetWidth).toBe(scrollContainer.offsetWidth)
})
it('resizes based on the content when the autoHeight and/or autoWidth options are true', async () => {
const {component, element, editor} = buildComponent({autoHeight: true, autoWidth: true})
const {gutterContainer, scrollContainer} = component.refs
const initialWidth = element.offsetWidth
const initialHeight = element.offsetHeight
expect(initialWidth).toBe(gutterContainer.offsetWidth + scrollContainer.scrollWidth)
expect(initialHeight).toBe(scrollContainer.scrollHeight)
editor.setCursorScreenPosition([6, Infinity])
editor.insertText('x'.repeat(50))
await component.getNextUpdatePromise()
expect(element.offsetWidth).toBe(gutterContainer.offsetWidth + scrollContainer.scrollWidth)
expect(element.offsetWidth).toBeGreaterThan(initialWidth)
editor.insertText('\n'.repeat(5))
await component.getNextUpdatePromise()
expect(element.offsetHeight).toBe(scrollContainer.scrollHeight)
expect(element.offsetHeight).toBeGreaterThan(initialHeight)
})
it('supports the isLineNumberGutterVisible parameter', () => {
const {component, element, editor} = buildComponent({lineNumberGutterVisible: false})
expect(element.querySelector('.line-number')).toBe(null)
})
it('supports the placeholderText parameter', () => {
const placeholderText = 'Placeholder Test'
const {component} = buildComponent({placeholderText, text: ''})
const emptyLineSpace = ' '
expect(component.refs.content.textContent).toBe(emptyLineSpace + placeholderText)
})
})
describe('mini editors', () => {
it('adds the mini attribute', () => {
const {element, editor} = buildComponent({mini: true})
expect(element.hasAttribute('mini')).toBe(true)
})
it('does not render the gutter container', () => {
const {component, element, editor} = buildComponent({mini: true})
expect(component.refs.gutterContainer).toBeUndefined()
expect(element.querySelector('gutter-container')).toBeNull()
})
it('does not render line decorations for the cursor line', async () => {
const {component, element, editor} = buildComponent({mini: true})
expect(element.querySelector('.line').classList.contains('cursor-line')).toBe(false)
editor.update({mini: false})
await component.getNextUpdatePromise()
expect(element.querySelector('.line').classList.contains('cursor-line')).toBe(true)
editor.update({mini: true})
await component.getNextUpdatePromise()
expect(element.querySelector('.line').classList.contains('cursor-line')).toBe(false)
})
})
describe('focus', () => {
beforeEach(() => {
assertDocumentFocused()
})
it('focuses the hidden input element and adds the is-focused class when focused', async () => {
const {component, element, editor} = buildComponent()
const {hiddenInput} = component.refs
expect(document.activeElement).not.toBe(hiddenInput)
element.focus()
expect(document.activeElement).toBe(hiddenInput)
await component.getNextUpdatePromise()
expect(element.classList.contains('is-focused')).toBe(true)
element.focus() // focusing back to the element does not blur
expect(document.activeElement).toBe(hiddenInput)
expect(element.classList.contains('is-focused')).toBe(true)
document.body.focus()
expect(document.activeElement).not.toBe(hiddenInput)
await component.getNextUpdatePromise()
expect(element.classList.contains('is-focused')).toBe(false)
})
it('updates the component when the hidden input is focused directly', async () => {
const {component, element, editor} = buildComponent()
const {hiddenInput} = component.refs
expect(element.classList.contains('is-focused')).toBe(false)
expect(document.activeElement).not.toBe(hiddenInput)
hiddenInput.focus()
await component.getNextUpdatePromise()
expect(element.classList.contains('is-focused')).toBe(true)
})
it('gracefully handles a focus event that occurs prior to the attachedCallback of the element', () => {
const {component, element, editor} = buildComponent({attach: false})
const parent = document.createElement('text-editor-component-test-element')
parent.appendChild(element)
parent.didAttach = () => element.focus()
jasmine.attachToDOM(parent)
expect(document.activeElement).toBe(component.refs.hiddenInput)
})
it('gracefully handles a focus event that occurs prior to detecting the element has become visible', async () => {
const {component, element, editor} = buildComponent({attach: false})
element.style.display = 'none'
jasmine.attachToDOM(element)
element.style.display = 'block'
element.focus()
await component.getNextUpdatePromise()
expect(document.activeElement).toBe(component.refs.hiddenInput)
})
it('emits blur events only when focus shifts to something other than the editor itself or its hidden input', () => {
const {element} = buildComponent()
let blurEventCount = 0
element.addEventListener('blur', () => blurEventCount++)
element.focus()
expect(blurEventCount).toBe(0)
element.focus()
expect(blurEventCount).toBe(0)
document.body.focus()
expect(blurEventCount).toBe(1)
})
})
describe('autoscroll', () => {
it('automatically scrolls vertically when the requested range is within the vertical scroll margin of the top or bottom', async () => {
const {component, editor} = buildComponent({height: 120})
expect(component.getLastVisibleRow()).toBe(8)
editor.scrollToScreenRange([[4, 0], [6, 0]])
await component.getNextUpdatePromise()
expect(component.getScrollBottom()).toBe((6 + 1 + editor.verticalScrollMargin) * component.getLineHeight())
editor.scrollToScreenPosition([8, 0])
await component.getNextUpdatePromise()
expect(component.getScrollBottom()).toBe((8 + 1 + editor.verticalScrollMargin) * component.measurements.lineHeight)
editor.scrollToScreenPosition([3, 0])
await component.getNextUpdatePromise()
expect(component.getScrollTop()).toBe((3 - editor.verticalScrollMargin) * component.measurements.lineHeight)
editor.scrollToScreenPosition([2, 0])
await component.getNextUpdatePromise()
expect(component.getScrollTop()).toBe(0)
})
it('does not vertically autoscroll by more than half of the visible lines if the editor is shorter than twice the scroll margin', async () => {
const {component, element, editor} = buildComponent({autoHeight: false})
element.style.height = 5.5 * component.measurements.lineHeight + 'px'
await component.getNextUpdatePromise()
expect(component.getLastVisibleRow()).toBe(6)
const scrollMarginInLines = 2
editor.scrollToScreenPosition([6, 0])
await component.getNextUpdatePromise()
expect(component.getScrollBottom()).toBe((6 + 1 + scrollMarginInLines) * component.measurements.lineHeight)
editor.scrollToScreenPosition([6, 4])
await component.getNextUpdatePromise()
expect(component.getScrollBottom()).toBe((6 + 1 + scrollMarginInLines) * component.measurements.lineHeight)
editor.scrollToScreenRange([[4, 4], [6, 4]])
await component.getNextUpdatePromise()
expect(component.getScrollTop()).toBe((4 - scrollMarginInLines) * component.measurements.lineHeight)
editor.scrollToScreenRange([[4, 4], [6, 4]], {reversed: false})
await component.getNextUpdatePromise()
expect(component.getScrollBottom()).toBe((6 + 1 + scrollMarginInLines) * component.measurements.lineHeight)
})
it('automatically scrolls horizontally when the requested range is within the horizontal scroll margin of the right edge of the gutter or right edge of the scroll container', async () => {
const {component, element, editor} = buildComponent()
const {scrollContainer} = component.refs
element.style.width =
component.getGutterContainerWidth() +
3 * editor.horizontalScrollMargin * component.measurements.baseCharacterWidth + 'px'
await component.getNextUpdatePromise()
editor.scrollToScreenRange([[1, 12], [2, 28]])
await component.getNextUpdatePromise()
let expectedScrollLeft = Math.round(
clientLeftForCharacter(component, 1, 12) -
lineNodeForScreenRow(component, 1).getBoundingClientRect().left -
(editor.horizontalScrollMargin * component.measurements.baseCharacterWidth)
)
expect(component.getScrollLeft()).toBe(expectedScrollLeft)
editor.scrollToScreenRange([[1, 12], [2, 28]], {reversed: false})
await component.getNextUpdatePromise()
expectedScrollLeft = Math.round(
component.getGutterContainerWidth() +
clientLeftForCharacter(component, 2, 28) -
lineNodeForScreenRow(component, 2).getBoundingClientRect().left +
(editor.horizontalScrollMargin * component.measurements.baseCharacterWidth) -
component.getScrollContainerClientWidth()
)
expect(component.getScrollLeft()).toBe(expectedScrollLeft)
})
it('does not horizontally autoscroll by more than half of the visible "base-width" characters if the editor is narrower than twice the scroll margin', async () => {
const {component, editor} = buildComponent({autoHeight: false})
await setEditorWidthInCharacters(component, 1.5 * editor.horizontalScrollMargin)
const contentWidthInCharacters = Math.floor(component.getScrollContainerClientWidth() / component.getBaseCharacterWidth())
expect(contentWidthInCharacters).toBe(9)
editor.scrollToScreenRange([[6, 10], [6, 15]])
await component.getNextUpdatePromise()
let expectedScrollLeft = Math.floor(
clientLeftForCharacter(component, 6, 10) -
lineNodeForScreenRow(component, 1).getBoundingClientRect().left -
(4 * component.getBaseCharacterWidth())
)
expect(component.getScrollLeft()).toBe(expectedScrollLeft)
})
it('correctly autoscrolls after inserting a line that exceeds the current content width', async () => {
const {component, element, editor} = buildComponent()
element.style.width = component.getGutterContainerWidth() + component.getContentWidth() + 'px'
await component.getNextUpdatePromise()
editor.setCursorScreenPosition([0, Infinity])
editor.insertText('x'.repeat(100))
await component.getNextUpdatePromise()
expect(component.getScrollLeft()).toBe(component.getScrollWidth() - component.getScrollContainerClientWidth())
})
it('accounts for the presence of horizontal scrollbars that appear during the same frame as the autoscroll', async () => {
const {component, element, editor} = buildComponent()
const {scrollContainer} = component.refs
element.style.height = component.getScrollHeight() + 'px'
element.style.width = component.getScrollWidth() + 'px'
await component.getNextUpdatePromise()
editor.setCursorScreenPosition([10, Infinity])
editor.insertText('\n\n' + 'x'.repeat(100))
await component.getNextUpdatePromise()
expect(component.getScrollTop()).toBe(component.getScrollHeight() - component.getScrollContainerClientHeight())
expect(component.getScrollLeft()).toBe(component.getScrollWidth() - component.getScrollContainerClientWidth())
})
})
describe('line and line number decorations', () => {
it('adds decoration classes on screen lines spanned by decorated markers', async () => {
const {component, element, editor} = buildComponent({width: 435, attach: false})
editor.setSoftWrapped(true)
jasmine.attachToDOM(element)
expect(lineNodeForScreenRow(component, 3).textContent).toBe(
' var pivot = items.shift(), current, left = [], '
)
expect(lineNodeForScreenRow(component, 4).textContent).toBe(
' right = [];'
)
const marker1 = editor.markScreenRange([[1, 10], [3, 10]])
const layer = editor.addMarkerLayer()
const marker2 = layer.markScreenPosition([5, 0])
const marker3 = layer.markScreenPosition([8, 0])
const marker4 = layer.markScreenPosition([10, 0])
const markerDecoration = editor.decorateMarker(marker1, {type: ['line', 'line-number'], class: 'a'})
const layerDecoration = editor.decorateMarkerLayer(layer, {type: ['line', 'line-number'], class: 'b'})
layerDecoration.setPropertiesForMarker(marker4, {type: 'line', class: 'c'})
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 2).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 3).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 4).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 5).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 8).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 10).classList.contains('b')).toBe(false)
expect(lineNodeForScreenRow(component, 10).classList.contains('c')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 2).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 3).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 4).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 5).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 8).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 10).classList.contains('b')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 10).classList.contains('c')).toBe(false)
marker1.setScreenRange([[5, 0], [8, 0]])
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 2).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 3).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 4).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 5).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 5).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 6).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 7).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 8).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 8).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 2).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 3).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 4).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 5).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 5).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 6).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 7).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 8).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 8).classList.contains('b')).toBe(true)
})
it('honors the onlyEmpty and onlyNonEmpty decoration options', async () => {
const {component, element, editor} = buildComponent()
const marker = editor.markScreenPosition([1, 0])
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'a', onlyEmpty: true})
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'b', onlyNonEmpty: true})
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'c'})
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 1).classList.contains('b')).toBe(false)
expect(lineNodeForScreenRow(component, 1).classList.contains('c')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('b')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('c')).toBe(true)
marker.setScreenRange([[1, 0], [2, 4]])
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 1).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 1).classList.contains('c')).toBe(true)
expect(lineNodeForScreenRow(component, 2).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 2).classList.contains('c')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('c')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 2).classList.contains('b')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 2).classList.contains('c')).toBe(true)
})
it('honors the onlyHead option', async () => {
const {component, element, editor} = buildComponent()
const marker = editor.markScreenRange([[1, 4], [3, 4]])
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'a', onlyHead: true})
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 3).classList.contains('a')).toBe(true)
expect(lineNumberNodeForScreenRow(component, 1).classList.contains('a')).toBe(false)
expect(lineNumberNodeForScreenRow(component, 3).classList.contains('a')).toBe(true)
})
it('only decorates the last row of non-empty ranges that end at column 0 if omitEmptyLastRow is false', async () => {
const {component, element, editor} = buildComponent()
const marker = editor.markScreenRange([[1, 0], [3, 0]])
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'a'})
editor.decorateMarker(marker, {type: ['line', 'line-number'], class: 'b', omitEmptyLastRow: false})
await component.getNextUpdatePromise()
expect(lineNodeForScreenRow(component, 1).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 2).classList.contains('a')).toBe(true)
expect(lineNodeForScreenRow(component, 3).classList.contains('a')).toBe(false)
expect(lineNodeForScreenRow(component, 1).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 2).classList.contains('b')).toBe(true)
expect(lineNodeForScreenRow(component, 3).classList.contains('b')).toBe(true)
})
})
describe('highlight decorations', () => {
it('renders single-line highlights', async () => {
const {component, element, editor} = buildComponent()
const marker = editor.markScreenRange([[1, 2], [1, 10]])
editor.decorateMarker(marker, {type: 'highlight', class: 'a'})
await component.getNextUpdatePromise()
{
const regions = element.querySelectorAll('.highlight.a .region')
expect(regions.length).toBe(1)
const regionRect = regions[0].getBoundingClientRect()
expect(regionRect.top).toBe(lineNodeForScreenRow(component, 1).getBoundingClientRect().top)
expect(Math.round(regionRect.left)).toBe(clientLeftForCharacter(component, 1, 2))
expect(Math.round(regionRect.right)).toBe(clientLeftForCharacter(component, 1, 10))
}
marker.setScreenRange([[1, 4], [1, 8]])
await component.getNextUpdatePromise()
{
const regions = element.querySelectorAll('.highlight.a .region')
expect(regions.length).toBe(1)
const regionRect = regions[0].getBoundingClientRect()
expect(regionRect.top).toBe(lineNodeForScreenRow(component, 1).getBoundingClientRect().top)
expect(regionRect.bottom).toBe(lineNodeForScreenRow(component, 1).getBoundingClientRect().bottom)
expect(Math.round(regionRect.left)).toBe(clientLeftForCharacter(component, 1, 4))
expect(Math.round(regionRect.right)).toBe(clientLeftForCharacter(component, 1, 8))
}
})
it('renders multi-line highlights that span across tiles', async () => {
const {component, element, editor} = buildComponent({rowsPerTile: 3})
const marker = editor.markScreenRange([[2, 4], [3, 4]])
editor.decorateMarker(marker, {type: 'highlight', class: 'a'})
await component.getNextUpdatePromise()
{
// We have 2 top-level highlight divs due to the regions being split
// across 2 different tiles
expect(element.querySelectorAll('.highlight.a').length).toBe(2)
const regions = element.querySelectorAll('.highlight.a .region')
expect(regions.length).toBe(2)
const region0Rect = regions[0].getBoundingClientRect()
expect(region0Rect.top).toBe(lineNodeForScreenRow(component, 2).getBoundingClientRect().top)
expect(region0Rect.bottom).toBe(lineNodeForScreenRow(component, 2).getBoundingClientRect().bottom)
expect(Math.round(region0Rect.left)).toBe(clientLeftForCharacter(component, 2, 4))
expect(Math.round(region0Rect.right)).toBe(component.refs.content.getBoundingClientRect().right)
const region1Rect = regions[1].getBoundingClientRect()
expect(region1Rect.top).toBe(lineNodeForScreenRow(component, 3).getBoundingClientRect().top)
expect(region1Rect.bottom).toBe(lineNodeForScreenRow(component, 3).getBoundingClientRect().bottom)
expect(Math.round(region1Rect.left)).toBe(clientLeftForCharacter(component, 3, 0))
expect(Math.round(region1Rect.right)).toBe(clientLeftForCharacter(component, 3, 4))
}
marker.setScreenRange([[2, 4], [5, 4]])
await component.getNextUpdatePromise()
{
// Still split across 2 tiles
expect(element.querySelectorAll('.highlight.a').length).toBe(2)
const regions = element.querySelectorAll('.highlight.a .region')
expect(regions.length).toBe(4) // Each tile renders its
const region0Rect = regions[0].getBoundingClientRect()
expect(region0Rect.top).toBe(lineNodeForScreenRow(component, 2).getBoundingClientRect().top)
expect(region0Rect.bottom).toBe(lineNodeForScreenRow(component, 2).getBoundingClientRect().bottom)
expect(Math.round(region0Rect.left)).toBe(clientLeftForCharacter(component, 2, 4))
expect(Math.round(region0Rect.right)).toBe(component.refs.content.getBoundingClientRect().right)
const region1Rect = regions[1].getBoundingClientRect()
expect(region1Rect.top).toBe(lineNodeForScreenRow(component, 3).getBoundingClientRect().top)
expect(region1Rect.bottom).toBe(lineNodeForScreenRow(component, 4).getBoundingClientRect().top)
expect(Math.round(region1Rect.left)).toBe(component.refs.content.getBoundingClientRect().left)
expect(Math.round(region1Rect.right)).toBe(component.refs.content.getBoundingClientRect().right)
const region2Rect = regions[2].getBoundingClientRect()
expect(region2Rect.top).toBe(lineNodeForScreenRow(component, 4).getBoundingClientRect().top)
expect(region2Rect.bottom).toBe(lineNodeForScreenRow(component, 5).getBoundingClientRect().top)
expect(Math.round(region2Rect.left)).toBe(component.refs.content.getBoundingClientRect().left)
expect(Math.round(region2Rect.right)).toBe(component.refs.content.getBoundingClientRect().right)
const region3Rect = regions[3].getBoundingClientRect()
expect(region3Rect.top).toBe(lineNodeForScreenRow(component, 5).getBoundingClientRect().top)
expect(region3Rect.bottom).toBe(lineNodeForScreenRow(component, 5).getBoundingClientRect().bottom)
expect(Math.round(region3Rect.left)).toBe(component.refs.content.getBoundingClientRect().left)
expect(Math.round(region3Rect.right)).toBe(clientLeftForCharacter(component, 5, 4))
}
})
it('can flash highlight decorations', async () => {
const {component, element, editor} = buildComponent({rowsPerTile: 3, height: 200})
const marker = editor.markScreenRange([[2, 4], [3, 4]])
const decoration = editor.decorateMarker(marker, {type: 'highlight', class: 'a'})
decoration.flash('b', 10)
// Flash on initial appearence of highlight
await component.getNextUpdatePromise()
const highlights = element.querySelectorAll('.highlight.a')
expect(highlights.length).toBe(2) // split across 2 tiles
expect(highlights[0].classList.contains('b')).toBe(true)
expect(highlights[1].classList.contains('b')).toBe(true)
await conditionPromise(() =>
!highlights[0].classList.contains('b') &&
!highlights[1].classList.contains('b')
)
// Don't flash on next update if another flash wasn't requested
await setScrollTop(component, 100)
expect(highlights[0].classList.contains('b')).toBe(false)
expect(highlights[1].classList.contains('b')).toBe(false)
// Flash existing highlight
decoration.flash('c', 100)
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('c')).toBe(true)
expect(highlights[1].classList.contains('c')).toBe(true)
// Add second flash class
decoration.flash('d', 100)
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('c')).toBe(true)
expect(highlights[1].classList.contains('c')).toBe(true)
expect(highlights[0].classList.contains('d')).toBe(true)
expect(highlights[1].classList.contains('d')).toBe(true)
await conditionPromise(() =>
!highlights[0].classList.contains('c') &&
!highlights[1].classList.contains('c') &&
!highlights[0].classList.contains('d') &&
!highlights[1].classList.contains('d')
)
// Flashing the same class again before the first flash completes
// removes the flash class and adds it back on the next frame to ensure
// CSS transitions apply to the second flash.
decoration.flash('e', 100)
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('e')).toBe(true)
expect(highlights[1].classList.contains('e')).toBe(true)
decoration.flash('e', 100)
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('e')).toBe(false)
expect(highlights[1].classList.contains('e')).toBe(false)
await conditionPromise(() =>
highlights[0].classList.contains('e') &&
highlights[1].classList.contains('e')
)
await conditionPromise(() =>
!highlights[0].classList.contains('e') &&
!highlights[1].classList.contains('e')
)
})
it('supports layer decorations', async () => {
const {component, element, editor} = buildComponent({rowsPerTile: 12})
const markerLayer = editor.addMarkerLayer()
const marker1 = markerLayer.markScreenRange([[2, 4], [3, 4]])
const marker2 = markerLayer.markScreenRange([[5, 6], [7, 8]])
const decoration = editor.decorateMarkerLayer(markerLayer, {type: 'highlight', class: 'a'})
await component.getNextUpdatePromise()
const highlights = element.querySelectorAll('.highlight')
expect(highlights[0].classList.contains('a')).toBe(true)
expect(highlights[1].classList.contains('a')).toBe(true)
decoration.setPropertiesForMarker(marker1, {type: 'highlight', class: 'b'})
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('b')).toBe(true)
expect(highlights[1].classList.contains('a')).toBe(true)
decoration.setPropertiesForMarker(marker1, null)
decoration.setPropertiesForMarker(marker2, {type: 'highlight', class: 'c'})
await component.getNextUpdatePromise()
expect(highlights[0].classList.contains('a')).toBe(true)
expect(highlights[1].classList.contains('c')).toBe(true)
})
})
describe('overlay decorations', () => {
function attachFakeWindow (component) {
const fakeWindow = document.createElement('div')
fakeWindow.style.position = 'absolute'
fakeWindow.style.padding = 20 + 'px'
fakeWindow.style.backgroundColor = 'blue'
fakeWindow.appendChild(component.element)
jasmine.attachToDOM(fakeWindow)
spyOn(component, 'getWindowInnerWidth').andCallFake(() => fakeWindow.getBoundingClientRect().width)
spyOn(component, 'getWindowInnerHeight').andCallFake(() => fakeWindow.getBoundingClientRect().height)
return fakeWindow
}
it('renders overlay elements at the specified screen position unless it would overflow the window', async () => {
const {component, element, editor} = buildComponent({width: 200, height: 100, attach: false})
const fakeWindow = attachFakeWindow(component)
await setScrollTop(component, 50)
await setScrollLeft(component, 100)
const marker = editor.markScreenPosition([4, 25])
const overlayElement = document.createElement('div')
overlayElement.style.width = '50px'
overlayElement.style.height = '50px'
overlayElement.style.margin = '3px'
overlayElement.style.backgroundColor = 'red'
const decoration = editor.decorateMarker(marker, {type: 'overlay', item: overlayElement, class: 'a'})
await component.getNextUpdatePromise()
const overlayWrapper = overlayElement.parentElement
expect(overlayWrapper.classList.contains('a')).toBe(true)
expect(overlayWrapper.getBoundingClientRect().top).toBe(clientTopForLine(component, 5))
expect(overlayWrapper.getBoundingClientRect().left).toBe(clientLeftForCharacter(component, 4, 25))
// Updates the horizontal position on scroll
await setScrollLeft(component, 150)
expect(overlayWrapper.getBoundingClientRect().left).toBe(clientLeftForCharacter(component, 4, 25))
// Shifts the overlay horizontally to ensure the overlay element does not
// overflow the window
await setScrollLeft(component, 30)
expect(overlayElement.getBoundingClientRect().right).toBe(fakeWindow.getBoundingClientRect().right)
await setScrollLeft(component, 280)
expect(overlayElement.getBoundingClientRect().left).toBe(fakeWindow.getBoundingClientRect().left)
// Updates the vertical position on scroll
await setScrollTop(component, 60)
expect(overlayWrapper.getBoundingClientRect().top).toBe(clientTopForLine(component, 5))
// Flips the overlay vertically to ensure the overlay element does not
// overflow the bottom of the window
setScrollLeft(component, 100)
await setScrollTop(component, 0)
expect(overlayWrapper.getBoundingClientRect().bottom).toBe(clientTopForLine(component, 4))
// Flips the overlay vertically on overlay resize if necessary
await setScrollTop(component, 20)
expect(overlayWrapper.getBoundingClientRect().top).toBe(clientTopForLine(component, 5))
overlayElement.style.height = 60 + 'px'
await component.getNextUpdatePromise()
expect(overlayWrapper.getBoundingClientRect().bottom).toBe(clientTopForLine(component, 4))
// Does not flip the overlay vertically if it would overflow the top of the window
overlayElement.style.height = 80 + 'px'
await component.getNextUpdatePromise()
expect(overlayWrapper.getBoundingClientRect().top).toBe(clientTopForLine(component, 5))
// Can update overlay wrapper class
decoration.setProperties({type: 'overlay', item: overlayElement, class: 'b'})
await component.getNextUpdatePromise()
expect(overlayWrapper.classList.contains('a')).toBe(false)
expect(overlayWrapper.classList.contains('b')).toBe(true)
decoration.setProperties({type: 'overlay', item: overlayElement})
await component.getNextUpdatePromise()
expect(overlayWrapper.classList.contains('b')).toBe(false)
})
it('does not attempt to avoid overflowing the window if `avoidOverflow` is false on the decoration', async () => {
const {component, element, editor} = buildComponent({width: 200, height: 100, attach: false})
const fakeWindow = attachFakeWindow(component)
const overlayElement = document.createElement('div')
overlayElement.style.width = '50px'
overlayElement.style.height = '50px'
overlayElement.style.margin = '3px'
overlayElement.style.backgroundColor = 'red'
const marker = editor.markScreenPosition([4, 25])
const decoration = editor.decorateMarker(marker, {type: 'overlay', item: overlayElement, avoidOverflow: false})
await component.getNextUpdatePromise()
await setScrollLeft(component, 30)
expect(overlayElement.getBoundingClientRect().right).toBeGreaterThan(fakeWindow.getBoundingClientRect().right)
await setScrollLeft(component, 280)
expect(overlayElement.getBoundingClientRect().left).toBeLessThan(fakeWindow.getBoundingClientRect().left)
})
})
describe('mouse input', () => {
describe('on the lines', () => {
it('positions the cursor on single-click', async () => {
const {component, element, editor} = buildComponent()
const {lineHeight} = component.measurements
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: clientLeftForCharacter(component, 0, editor.lineLengthForScreenRow(0)) + 1,
clientY: clientTopForLine(component, 0) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([0, editor.lineLengthForScreenRow(0)])
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: (clientLeftForCharacter(component, 3, 0) + clientLeftForCharacter(component, 3, 1)) / 2,
clientY: clientTopForLine(component, 1) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([1, 0])
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: (clientLeftForCharacter(component, 3, 14) + clientLeftForCharacter(component, 3, 15)) / 2,
clientY: clientTopForLine(component, 3) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([3, 14])
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: (clientLeftForCharacter(component, 3, 14) + clientLeftForCharacter(component, 3, 15)) / 2 + 1,
clientY: clientTopForLine(component, 3) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([3, 15])
editor.getBuffer().setTextInRange([[3, 14], [3, 15]], '🐣')
await component.getNextUpdatePromise()
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: (clientLeftForCharacter(component, 3, 14) + clientLeftForCharacter(component, 3, 16)) / 2,
clientY: clientTopForLine(component, 3) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([3, 14])
component.didMouseDownOnContent({
detail: 1,
button: 0,
clientX: (clientLeftForCharacter(component, 3, 14) + clientLeftForCharacter(component, 3, 16)) / 2 + 1,
clientY: clientTopForLine(component, 3) + lineHeight / 2
})
expect(editor.getCursorScreenPosition()).toEqual([3, 16])
})
it('selects words on double-click', () => {
const {component, editor} = buildComponent()
const {clientX, clientY} = clientPositionForCharacter(component, 1, 16)
component.didMouseDownOnContent({detail: 1, button: 0, clientX, clientY})
component.didMouseDownOnContent({detail: 2, button: 0, clientX, clientY})
expect(editor.getSelectedScreenRange()).toEqual([[1, 13], [1, 21]])
})
it('selects lines on triple-click', () => {
const {component, editor} = buildComponent()
const {clientX, clientY} = clientPositionForCharacter(component, 1, 16)
component.didMouseDownOnContent({detail: 1, button: 0, clientX, clientY})
component.didMouseDownOnContent({detail: 2, button: 0, clientX, clientY})
component.didMouseDownOnContent({detail: 3, button: 0, clientX, clientY})
expect(editor.getSelectedScreenRange()).toEqual([[1, 0], [2, 0]])
})
it('adds or removes cursors when holding cmd or ctrl when single-clicking', () => {
const {component, editor} = buildComponent()
spyOn(component, 'getPlatform').andCallFake(() => mockedPlatform)
let mockedPlatform = 'darwin'
expect(editor.getCursorScreenPositions()).toEqual([[0, 0]])
// add cursor at 1, 16
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 16), {
detail: 1,
button: 0,
metaKey: true
})
)
expect(editor.getCursorScreenPositions()).toEqual([[0, 0], [1, 16]])
// remove cursor at 0, 0
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 0, 0), {
detail: 1,
button: 0,
metaKey: true
})
)
expect(editor.getCursorScreenPositions()).toEqual([[1, 16]])
// cmd-click cursor at 1, 16 but don't remove it because it's the last one
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 16), {
detail: 1,
button: 0,
metaKey: true
})
)
expect(editor.getCursorScreenPositions()).toEqual([[1, 16]])
// cmd-clicking within a selection destroys it
editor.addSelectionForScreenRange([[2, 10], [2, 15]])
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 16], [1, 16]],
[[2, 10], [2, 15]]
])
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 2, 13), {
detail: 1,
button: 0,
metaKey: true
})
)
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 16], [1, 16]]
])
// ctrl-click does not add cursors on macOS
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 4), {
detail: 1,
button: 0,
ctrlKey: true
})
)
expect(editor.getCursorScreenPositions()).toEqual([[1, 4]])
mockedPlatform = 'win32'
// ctrl-click adds cursors on platforms *other* than macOS
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 16), {
detail: 1,
button: 0,
ctrlKey: true
})
)
expect(editor.getCursorScreenPositions()).toEqual([[1, 4], [1, 16]])
})
it('adds word selections when holding cmd or ctrl when double-clicking', () => {
const {component, editor} = buildComponent()
editor.addCursorAtScreenPosition([1, 16])
expect(editor.getCursorScreenPositions()).toEqual([[0, 0], [1, 16]])
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 16), {
detail: 1,
button: 0,
metaKey: true
})
)
component.didMouseDownOnContent(
Object.assign(clientPositionForCharacter(component, 1, 16), {
detail: 2,
button: 0,
metaKey: true
})
)
expect(editor.getSelectedScreenRanges()).toEqual([
[[0, 0], [0, 0]],
[[1, 13], [1, 21]]
])
})
it('adds line selections when holding cmd or ctrl when triple-clicking', () => {
const {component, editor} = buildComponent()
editor.addCursorAtScreenPosition([1, 16])
expect(editor.getCursorScreenPositions()).toEqual([[0, 0], [1, 16]])
const {clientX, clientY} = clientPositionForCharacter(component, 1, 16)
component.didMouseDownOnContent({detail: 1, button: 0, metaKey: true, clientX, clientY})
component.didMouseDownOnContent({detail: 2, button: 0, metaKey: true, clientX, clientY})
component.didMouseDownOnContent({detail: 3, button: 0, metaKey: true, clientX, clientY})
expect(editor.getSelectedScreenRanges()).toEqual([
[[0, 0], [0, 0]],
[[1, 0], [2, 0]]
])
})
it('expands the last selection on shift-click', () => {
const {component, element, editor} = buildComponent()
editor.setCursorScreenPosition([2, 18])
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 1, 4)))
expect(editor.getSelectedScreenRange()).toEqual([[1, 4], [2, 18]])
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 4, 4)))
expect(editor.getSelectedScreenRange()).toEqual([[2, 18], [4, 4]])
// reorients word-wise selections to keep the word selected regardless of
// where the subsequent shift-click occurs
editor.setCursorScreenPosition([2, 18])
editor.getLastSelection().selectWord()
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 1, 4)))
expect(editor.getSelectedScreenRange()).toEqual([[1, 2], [2, 20]])
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 3, 11)))
expect(editor.getSelectedScreenRange()).toEqual([[2, 14], [3, 13]])
// reorients line-wise selections to keep the word selected regardless of
// where the subsequent shift-click occurs
editor.setCursorScreenPosition([2, 18])
editor.getLastSelection().selectLine()
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 1, 4)))
expect(editor.getSelectedScreenRange()).toEqual([[1, 0], [3, 0]])
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
shiftKey: true
}, clientPositionForCharacter(component, 3, 11)))
expect(editor.getSelectedScreenRange()).toEqual([[2, 0], [4, 0]])
})
it('expands the last selection on drag', () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
}, clientPositionForCharacter(component, 1, 4)))
{
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[0][0]
didDrag(clientPositionForCharacter(component, 8, 8))
expect(editor.getSelectedScreenRange()).toEqual([[1, 4], [8, 8]])
didDrag(clientPositionForCharacter(component, 4, 8))
expect(editor.getSelectedScreenRange()).toEqual([[1, 4], [4, 8]])
didStopDragging()
expect(editor.getSelectedScreenRange()).toEqual([[1, 4], [4, 8]])
}
// Click-drag a second selection... selections are not merged until the
// drag stops.
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
metaKey: 1,
}, clientPositionForCharacter(component, 8, 8)))
{
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[1][0]
didDrag(clientPositionForCharacter(component, 2, 8))
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 4], [4, 8]],
[[2, 8], [8, 8]]
])
didDrag(clientPositionForCharacter(component, 6, 8))
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 4], [4, 8]],
[[6, 8], [8, 8]]
])
didDrag(clientPositionForCharacter(component, 2, 8))
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 4], [4, 8]],
[[2, 8], [8, 8]]
])
didStopDragging()
expect(editor.getSelectedScreenRanges()).toEqual([
[[1, 4], [8, 8]]
])
}
})
it('expands the selection word-wise on double-click-drag', () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
component.didMouseDownOnContent(Object.assign({
detail: 1,
button: 0,
}, clientPositionForCharacter(component, 1, 4)))
component.didMouseDownOnContent(Object.assign({
detail: 2,
button: 0,
}, clientPositionForCharacter(component, 1, 4)))
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[1][0]
didDrag(clientPositionForCharacter(component, 0, 8))
expect(editor.getSelectedScreenRange()).toEqual([[0, 4], [1, 5]])
didDrag(clientPositionForCharacter(component, 2, 10))
expect(editor.getSelectedScreenRange()).toEqual([[1, 2], [2, 13]])
})
it('expands the selection line-wise on triple-click-drag', () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
const tripleClickPosition = clientPositionForCharacter(component, 2, 8)
component.didMouseDownOnContent(Object.assign({detail: 1, button: 0}, tripleClickPosition))
component.didMouseDownOnContent(Object.assign({detail: 2, button: 0}, tripleClickPosition))
component.didMouseDownOnContent(Object.assign({detail: 3, button: 0}, tripleClickPosition))
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[2][0]
didDrag(clientPositionForCharacter(component, 1, 8))
expect(editor.getSelectedScreenRange()).toEqual([[1, 0], [3, 0]])
didDrag(clientPositionForCharacter(component, 4, 10))
expect(editor.getSelectedScreenRange()).toEqual([[2, 0], [5, 0]])
})
it('destroys folds when clicking on their fold markers', async () => {
const {component, element, editor} = buildComponent()
editor.foldBufferRow(1)
await component.getNextUpdatePromise()
const target = element.querySelector('.fold-marker')
const {clientX, clientY} = clientPositionForCharacter(component, 1, editor.lineLengthForScreenRow(1))
component.didMouseDownOnContent({detail: 1, button: 0, target, clientX, clientY})
expect(editor.isFoldedAtBufferRow(1)).toBe(false)
expect(editor.getCursorScreenPosition()).toEqual([0, 0])
})
it('autoscrolls the content when dragging near the edge of the scroll container', async () => {
const {component, element, editor} = buildComponent({width: 200, height: 200})
spyOn(component, 'handleMouseDragUntilMouseUp')
let previousScrollTop = 0
let previousScrollLeft = 0
function assertScrolledDownAndRight () {
expect(component.getScrollTop()).toBeGreaterThan(previousScrollTop)
previousScrollTop = component.getScrollTop()
expect(component.getScrollLeft()).toBeGreaterThan(previousScrollLeft)
previousScrollLeft = component.getScrollLeft()
}
function assertScrolledUpAndLeft () {
expect(component.getScrollTop()).toBeLessThan(previousScrollTop)
previousScrollTop = component.getScrollTop()
expect(component.getScrollLeft()).toBeLessThan(previousScrollLeft)
previousScrollLeft = component.getScrollLeft()
}
component.didMouseDownOnContent({detail: 1, button: 0, clientX: 100, clientY: 100})
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[0][0]
didDrag({clientX: 199, clientY: 199})
assertScrolledDownAndRight()
didDrag({clientX: 199, clientY: 199})
assertScrolledDownAndRight()
didDrag({clientX: 199, clientY: 199})
assertScrolledDownAndRight()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUpAndLeft()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUpAndLeft()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUpAndLeft()
// Don't artificially update scroll position beyond possible values
expect(component.getScrollTop()).toBe(0)
expect(component.getScrollLeft()).toBe(0)
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
expect(component.getScrollTop()).toBe(0)
expect(component.getScrollLeft()).toBe(0)
const maxScrollTop = component.getMaxScrollTop()
const maxScrollLeft = component.getMaxScrollLeft()
setScrollTop(component, maxScrollTop)
await setScrollLeft(component, maxScrollLeft)
didDrag({clientX: 199, clientY: 199})
didDrag({clientX: 199, clientY: 199})
didDrag({clientX: 199, clientY: 199})
expect(component.getScrollTop()).toBe(maxScrollTop)
expect(component.getScrollLeft()).toBe(maxScrollLeft)
})
})
describe('on the line number gutter', () => {
it('selects all buffer rows intersecting the clicked screen row when a line number is clicked', async () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
editor.setSoftWrapped(true)
await setEditorWidthInCharacters(component, 50)
editor.foldBufferRange([[4, Infinity], [7, Infinity]])
await component.getNextUpdatePromise()
// Selects entire buffer line when clicked screen line is soft-wrapped
component.didMouseDownOnLineNumberGutter({
button: 0,
clientY: clientTopForLine(component, 3)
})
expect(editor.getSelectedScreenRange()).toEqual([[3, 0], [5, 0]])
expect(editor.getSelectedBufferRange()).toEqual([[3, 0], [4, 0]])
// Selects entire screen line, even if folds cause that selection to
// span multiple buffer lines
component.didMouseDownOnLineNumberGutter({
button: 0,
clientY: clientTopForLine(component, 5)
})
expect(editor.getSelectedScreenRange()).toEqual([[5, 0], [6, 0]])
expect(editor.getSelectedBufferRange()).toEqual([[4, 0], [8, 0]])
})
it('adds new selections when a line number is meta-clicked', async () => {
const {component, editor} = buildComponent()
editor.setSoftWrapped(true)
await setEditorWidthInCharacters(component, 50)
editor.foldBufferRange([[4, Infinity], [7, Infinity]])
await component.getNextUpdatePromise()
// Selects entire buffer line when clicked screen line is soft-wrapped
component.didMouseDownOnLineNumberGutter({
button: 0,
metaKey: true,
clientY: clientTopForLine(component, 3)
})
expect(editor.getSelectedScreenRanges()).toEqual([
[[0, 0], [0, 0]],
[[3, 0], [5, 0]]
])
expect(editor.getSelectedBufferRanges()).toEqual([
[[0, 0], [0, 0]],
[[3, 0], [4, 0]]
])
// Selects entire screen line, even if folds cause that selection to
// span multiple buffer lines
component.didMouseDownOnLineNumberGutter({
button: 0,
metaKey: true,
clientY: clientTopForLine(component, 5)
})
expect(editor.getSelectedScreenRanges()).toEqual([
[[0, 0], [0, 0]],
[[3, 0], [5, 0]],
[[5, 0], [6, 0]]
])
expect(editor.getSelectedBufferRanges()).toEqual([
[[0, 0], [0, 0]],
[[3, 0], [4, 0]],
[[4, 0], [8, 0]]
])
})
it('expands the last selection when a line number is shift-clicked', async () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
editor.setSoftWrapped(true)
await setEditorWidthInCharacters(component, 50)
editor.foldBufferRange([[4, Infinity], [7, Infinity]])
await component.getNextUpdatePromise()
editor.setSelectedScreenRange([[3, 4], [3, 8]])
editor.addCursorAtScreenPosition([2, 10])
component.didMouseDownOnLineNumberGutter({
button: 0,
shiftKey: true,
clientY: clientTopForLine(component, 5)
})
expect(editor.getSelectedBufferRanges()).toEqual([
[[3, 4], [3, 8]],
[[2, 10], [8, 0]]
])
// Original selection is preserved when shift-click-dragging
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[0][0]
didDrag({
clientY: clientTopForLine(component, 1)
})
expect(editor.getSelectedBufferRanges()).toEqual([
[[3, 4], [3, 8]],
[[1, 0], [2, 10]]
])
didDrag({
clientY: clientTopForLine(component, 5)
})
didStopDragging()
expect(editor.getSelectedBufferRanges()).toEqual([
[[2, 10], [8, 0]]
])
})
it('expands the selection when dragging', async () => {
const {component, editor} = buildComponent()
spyOn(component, 'handleMouseDragUntilMouseUp')
editor.setSoftWrapped(true)
await setEditorWidthInCharacters(component, 50)
editor.foldBufferRange([[4, Infinity], [7, Infinity]])
await component.getNextUpdatePromise()
editor.setSelectedScreenRange([[3, 4], [3, 6]])
component.didMouseDownOnLineNumberGutter({
button: 0,
metaKey: true,
clientY: clientTopForLine(component, 2)
})
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[0][0]
didDrag({
clientY: clientTopForLine(component, 1)
})
expect(editor.getSelectedScreenRanges()).toEqual([
[[3, 4], [3, 6]],
[[1, 0], [3, 0]]
])
didDrag({
clientY: clientTopForLine(component, 5)
})
expect(editor.getSelectedScreenRanges()).toEqual([
[[3, 4], [3, 6]],
[[2, 0], [6, 0]]
])
expect(editor.isFoldedAtBufferRow(4)).toBe(true)
didDrag({
clientY: clientTopForLine(component, 3)
})
expect(editor.getSelectedScreenRanges()).toEqual([
[[3, 4], [3, 6]],
[[2, 0], [4, 4]]
])
didStopDragging()
expect(editor.getSelectedScreenRanges()).toEqual([
[[2, 0], [4, 4]]
])
})
it('toggles folding when clicking on the right icon of a foldable line number', async () => {
const {component, element, editor} = buildComponent()
const target = element.querySelectorAll('.line-number')[1].querySelector('.icon-right')
expect(editor.isFoldedAtScreenRow(1)).toBe(false)
component.didMouseDownOnLineNumberGutter({target, button: 0, clientY: clientTopForLine(component, 1)})
expect(editor.isFoldedAtScreenRow(1)).toBe(true)
await component.getNextUpdatePromise()
component.didMouseDownOnLineNumberGutter({target, button: 0, clientY: clientTopForLine(component, 1)})
expect(editor.isFoldedAtScreenRow(1)).toBe(false)
})
it('autoscrolls when dragging near the top or bottom of the gutter', async () => {
const {component, editor} = buildComponent({width: 200, height: 200})
const {scrollContainer} = component.refs
spyOn(component, 'handleMouseDragUntilMouseUp')
let previousScrollTop = 0
let previousScrollLeft = 0
function assertScrolledDown () {
expect(component.getScrollTop()).toBeGreaterThan(previousScrollTop)
previousScrollTop = component.getScrollTop()
expect(component.getScrollLeft()).toBe(previousScrollLeft)
previousScrollLeft = component.getScrollLeft()
}
function assertScrolledUp () {
expect(component.getScrollTop()).toBeLessThan(previousScrollTop)
previousScrollTop = component.getScrollTop()
expect(component.getScrollLeft()).toBe(previousScrollLeft)
previousScrollLeft = component.getScrollLeft()
}
component.didMouseDownOnLineNumberGutter({detail: 1, button: 0, clientX: 0, clientY: 100})
const {didDrag, didStopDragging} = component.handleMouseDragUntilMouseUp.argsForCall[0][0]
didDrag({clientX: 199, clientY: 199})
assertScrolledDown()
didDrag({clientX: 199, clientY: 199})
assertScrolledDown()
didDrag({clientX: 199, clientY: 199})
assertScrolledDown()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUp()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUp()
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
assertScrolledUp()
// Don't artificially update scroll measurements beyond the minimum or
// maximum possible scroll positions
expect(component.getScrollTop()).toBe(0)
expect(component.getScrollLeft()).toBe(0)
didDrag({clientX: component.getGutterContainerWidth() + 1, clientY: 1})
expect(component.getScrollTop()).toBe(0)
expect(component.getScrollLeft()).toBe(0)
const maxScrollTop = component.getMaxScrollTop()
const maxScrollLeft = component.getMaxScrollLeft()
setScrollTop(component, maxScrollTop)
await setScrollLeft(component, maxScrollLeft)
didDrag({clientX: 199, clientY: 199})
didDrag({clientX: 199, clientY: 199})
didDrag({clientX: 199, clientY: 199})
expect(component.getScrollTop()).toBe(maxScrollTop)
expect(component.getScrollLeft()).toBe(maxScrollLeft)
})
})
describe('on the scrollbars', () => {
it('delegates the mousedown events to the parent component unless the mousedown was on the actual scrollbar', () => {
const {component, element, editor} = buildComponent({height: 100, width: 100})
const verticalScrollbar = component.refs.verticalScrollbar
const horizontalScrollbar = component.refs.horizontalScrollbar
const leftEdgeOfVerticalScrollbar = verticalScrollbar.element.getBoundingClientRect().right - getVerticalScrollbarWidth(component)
const topEdgeOfHorizontalScrollbar = horizontalScrollbar.element.getBoundingClientRect().bottom - getHorizontalScrollbarHeight(component)
verticalScrollbar.didMousedown({
button: 0,
detail: 1,
clientY: clientTopForLine(component, 4),
clientX: leftEdgeOfVerticalScrollbar
})
expect(editor.getCursorScreenPosition()).toEqual([0, 0])
verticalScrollbar.didMousedown({
button: 0,
detail: 1,
clientY: clientTopForLine(component, 4),
clientX: leftEdgeOfVerticalScrollbar - 1
})
expect(editor.getCursorScreenPosition()).toEqual([4, 6])
horizontalScrollbar.didMousedown({
button: 0,
detail: 1,
clientY: topEdgeOfHorizontalScrollbar,
clientX: component.refs.content.getBoundingClientRect().left
})
expect(editor.getCursorScreenPosition()).toEqual([4, 6])
horizontalScrollbar.didMousedown({
button: 0,
detail: 1,
clientY: topEdgeOfHorizontalScrollbar - 1,
clientX: component.refs.content.getBoundingClientRect().left
})
expect(editor.getCursorScreenPosition()).toEqual([4, 0])
})
})
})
})
function buildComponent (params = {}) {
const text = params.text != null ? params.text : SAMPLE_TEXT
const buffer = new TextBuffer({text})
const editorParams = {buffer}
if (params.height != null) params.autoHeight = false
for (const paramName of ['mini', 'autoHeight', 'autoWidth', 'lineNumberGutterVisible', 'placeholderText']) {
if (params[paramName] != null) editorParams[paramName] = params[paramName]
}
const editor = new TextEditor(editorParams)
const component = new TextEditorComponent({
model: editor,
rowsPerTile: params.rowsPerTile,
updatedSynchronously: false
})
const {element} = component
if (!editor.getAutoHeight()) {
element.style.height = params.height ? params.height + 'px' : '600px'
}
if (!editor.getAutoWidth()) {
element.style.width = params.width ? params.width + 'px' : '800px'
}
if (params.attach !== false) jasmine.attachToDOM(element)
return {component, element, editor}
}
function getBaseCharacterWidth (component) {
return Math.round(component.getScrollContainerWidth() / component.getBaseCharacterWidth())
}
async function setEditorHeightInLines(component, heightInLines) {
component.element.style.height = component.measurements.lineHeight * heightInLines + 'px'
await component.getNextUpdatePromise()
}
async function setEditorWidthInCharacters (component, widthInCharacters) {
component.element.style.width =
component.getGutterContainerWidth() +
widthInCharacters * component.measurements.baseCharacterWidth +
'px'
await component.getNextUpdatePromise()
}
function verifyCursorPosition (component, cursorNode, row, column) {
const rect = cursorNode.getBoundingClientRect()
expect(Math.round(rect.top)).toBe(clientTopForLine(component, row))
expect(Math.round(rect.left)).toBe(clientLeftForCharacter(component, row, column))
}
function clientTopForLine (component, row) {
return lineNodeForScreenRow(component, row).getBoundingClientRect().top
}
function clientLeftForCharacter (component, row, column) {
const textNodes = textNodesForScreenRow(component, row)
let textNodeStartColumn = 0
for (const textNode of textNodes) {
const textNodeEndColumn = textNodeStartColumn + textNode.textContent.length
if (column <= textNodeEndColumn) {
const range = document.createRange()
range.setStart(textNode, column - textNodeStartColumn)
range.setEnd(textNode, column - textNodeStartColumn)
return range.getBoundingClientRect().left
}
textNodeStartColumn = textNodeEndColumn
}
}
function clientPositionForCharacter (component, row, column) {
return {
clientX: clientLeftForCharacter(component, row, column),
clientY: clientTopForLine(component, row)
}
}
function lineNumberNodeForScreenRow (component, row) {
const gutterElement = component.refs.lineNumberGutter.element
const tileStartRow = component.tileStartRowForRow(row)
const tileIndex = component.tileIndexForTileStartRow(tileStartRow)
return gutterElement.children[tileIndex].children[row - tileStartRow]
}
function lineNodeForScreenRow (component, row) {
const renderedScreenLine = component.renderedScreenLineForRow(row)
return component.lineNodesByScreenLineId.get(renderedScreenLine.id)
}
function textNodesForScreenRow (component, row) {
const screenLine = component.renderedScreenLineForRow(row)
return component.textNodesByScreenLineId.get(screenLine.id)
}
function setScrollTop (component, scrollTop) {
component.setScrollTop(scrollTop)
component.scheduleUpdate()
return component.getNextUpdatePromise()
}
function setScrollLeft (component, scrollLeft) {
component.setScrollLeft(scrollLeft)
component.scheduleUpdate()
return component.getNextUpdatePromise()
}
function getHorizontalScrollbarHeight (component) {
const element = component.refs.horizontalScrollbar.element
return element.offsetHeight - element.clientHeight
}
function getVerticalScrollbarWidth (component) {
const element = component.refs.verticalScrollbar.element
return element.offsetWidth - element.clientWidth
}
function assertDocumentFocused () {
if (!document.hasFocus()) {
throw new Error('The document needs to be focused to run this test')
}
}