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const { conditionPromise } = require('./async-spec-helpers');
const Random = require('../script/node_modules/random-seed');
const { getRandomBufferRange, buildRandomLines } = require('./helpers/random');
const TextEditorComponent = require('../src/text-editor-component');
const TextEditorElement = require('../src/text-editor-element');
const TextEditor = require('../src/text-editor');
const TextBuffer = require('text-buffer');
const { Point } = TextBuffer;
const fs = require('fs');
const path = require('path');
const Grim = require('grim');
const electron = require('electron');
const clipboard = electron.clipboard;
const SAMPLE_TEXT = fs.readFileSync(
path.join(__dirname, 'fixtures', 'sample.js'),
'utf8'
);
document.registerElement('text-editor-component-test-element', {
prototype: Object.create(HTMLElement.prototype, {
attachedCallback: {
value: function() {
this.didAttach();
}
}
})
});
const editors = [];
let verticalScrollbarWidth, horizontalScrollbarHeight;
describe('TextEditorComponent', () => {
beforeEach(() => {
jasmine.useRealClock();
// Force scrollbars to be visible regardless of local system configuration
const scrollbarStyle = document.createElement('style');
scrollbarStyle.textContent =
'atom-text-editor ::-webkit-scrollbar { -webkit-appearance: none }';
jasmine.attachToDOM(scrollbarStyle);
if (verticalScrollbarWidth == null) {
const { component, element } = buildComponent({
text: 'abcdefgh\n'.repeat(10),
width: 30,
height: 30
});
verticalScrollbarWidth = getVerticalScrollbarWidth(component);
horizontalScrollbarHeight = getHorizontalScrollbarHeight(component);
element.remove();
}
});
afterEach(() => {
for (const editor of editors) {
editor.destroy();
}
editors.length = 0;
});
describe('rendering', () => {
it('renders lines and line numbers for the visible region', async () => {
const { component, element, editor } = buildComponent({
rowsPerTile: 3,
autoHeight: false
});
expect(queryOnScreenLineNumberElements(element).length).toBe(13);
expect(queryOnScreenLineElements(element).length).toBe(13);
element.style.height = 4 * component.measurements.lineHeight + 'px';
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(9);
expect(queryOnScreenLineElements(element).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(
queryOnScreenLineNumberElements(element).map(element =>
element.textContent.trim()
)
).toEqual(['10', '11', '12', '4', '5', '6', '7', '8', '9']);
expect(
queryOnScreenLineElements(element).map(
element => element.dataset.screenRow
)
).toEqual(['9', '10', '11', '3', '4', '5', '6', '7', '8']);
expect(
queryOnScreenLineElements(element).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(
queryOnScreenLineNumberElements(element).map(element =>
element.textContent.trim()
)
).toEqual(['1', '2', '3', '4', '5', '6', '7', '8', '9']);
expect(
queryOnScreenLineElements(element).map(
element => element.dataset.screenRow
)
).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8']);
expect(
queryOnScreenLineElements(element).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', async () => {
const { component, element, editor } = buildComponent({
rowsPerTile: 2,
height: 20,
width: 100
});
{
expect(editor.getApproximateLongestScreenRow()).toBe(3);
const expectedWidth = Math.ceil(
component.pixelPositionForScreenPosition(Point(3, Infinity)).left +
component.getBaseCharacterWidth()
);
expect(element.querySelector('.lines').style.width).toBe(
expectedWidth + 'px'
);
}
{
// Get the next update promise synchronously here to ensure we don't
// miss the update while polling the condition.
const nextUpdatePromise = component.getNextUpdatePromise();
await conditionPromise(
() => editor.getApproximateLongestScreenRow() === 6
);
await nextUpdatePromise;
// Capture the width of the lines before requesting the width of
// longest line, because making that request forces a DOM update
const actualWidth = element.querySelector('.lines').style.width;
const expectedWidth = Math.ceil(
component.pixelPositionForScreenPosition(Point(6, Infinity)).left +
component.getBaseCharacterWidth()
);
expect(actualWidth).toBe(expectedWidth + 'px');
}
// eslint-disable-next-line no-lone-blocks
{
// Make sure we do not throw an error if a synchronous update is
// triggered before measuring the longest line from a
// previously-scheduled update.
editor.getBuffer().insert(Point(12, Infinity), 'x'.repeat(100));
expect(editor.getLongestScreenRow()).toBe(12);
TextEditorComponent.getScheduler().readDocument(() => {
// This will happen before the measurement phase of the update
// triggered above.
component.pixelPositionForScreenPosition(Point(11, Infinity));
});
await component.getNextUpdatePromise();
}
});
it('re-renders lines when their height changes', async () => {
const { component, element } = buildComponent({
rowsPerTile: 3,
autoHeight: false
});
element.style.height = 4 * component.measurements.lineHeight + 'px';
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(9);
expect(queryOnScreenLineElements(element).length).toBe(9);
element.style.lineHeight = '2.0';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(6);
expect(queryOnScreenLineElements(element).length).toBe(6);
element.style.lineHeight = '0.7';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(12);
expect(queryOnScreenLineElements(element).length).toBe(12);
element.style.lineHeight = '0.05';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(13);
expect(queryOnScreenLineElements(element).length).toBe(13);
element.style.lineHeight = '0';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(13);
expect(queryOnScreenLineElements(element).length).toBe(13);
element.style.lineHeight = '1';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
expect(queryOnScreenLineNumberElements(element).length).toBe(9);
expect(queryOnScreenLineElements(element).length).toBe(9);
});
it('makes the content at least as tall as the scroll container client height', async () => {
const { component, editor } = buildComponent({
text: 'a'.repeat(100),
width: 50,
height: 100
});
expect(component.refs.content.offsetHeight).toBe(
100 - getHorizontalScrollbarHeight(component)
);
editor.setText('a\n'.repeat(30));
await component.getNextUpdatePromise();
expect(component.refs.content.offsetHeight).toBeGreaterThan(100);
expect(component.refs.content.offsetHeight).toBe(
component.getContentHeight()
);
});
it('honors the scrollPastEnd option by adding empty space equivalent to the clientHeight to the end of the content area', async () => {
const { component, editor } = buildComponent({
autoHeight: false,
autoWidth: false
});
await editor.update({ scrollPastEnd: true });
await setEditorHeightInLines(component, 6);
// scroll to end
await setScrollTop(component, Infinity);
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, Infinity);
expect(component.getFirstVisibleRow()).toBe(
editor.getScreenLineCount() + 1
);
});
it('does not fire onDidChangeScrollTop listeners when assigning the same maximal value and the content height has fractional pixels (regression)', async () => {
const { component, element, editor } = buildComponent({
autoHeight: false,
autoWidth: false
});
await setEditorHeightInLines(component, 3);
// Force a fractional content height with a block decoration
const item = document.createElement('div');
item.style.height = '10.6px';
editor.decorateMarker(editor.markBufferPosition([0, 0]), {
type: 'block',
item
});
await component.getNextUpdatePromise();
component.setScrollTop(Infinity);
element.onDidChangeScrollTop(newScrollTop => {
throw new Error('Scroll top should not have changed');
});
component.setScrollTop(component.getScrollTop());
});
it('gives the line number tiles an explicit width and height so their layout can be strictly contained', async () => {
const { component, editor } = buildComponent({ rowsPerTile: 3 });
const lineNumberGutterElement =
component.refs.gutterContainer.refs.lineNumberGutter.element;
expect(lineNumberGutterElement.offsetHeight).toBe(
component.getScrollHeight()
);
for (const child of lineNumberGutterElement.children) {
expect(child.offsetWidth).toBe(lineNumberGutterElement.offsetWidth);
if (!child.classList.contains('line-number')) {
for (const lineNumberElement of child.children) {
expect(lineNumberElement.offsetWidth).toBe(
lineNumberGutterElement.offsetWidth
);
}
}
}
editor.setText('x\n'.repeat(99));
await component.getNextUpdatePromise();
expect(lineNumberGutterElement.offsetHeight).toBe(
component.getScrollHeight()
);
for (const child of lineNumberGutterElement.children) {
expect(child.offsetWidth).toBe(lineNumberGutterElement.offsetWidth);
if (!child.classList.contains('line-number')) {
for (const lineNumberElement of child.children) {
expect(lineNumberElement.offsetWidth).toBe(
lineNumberGutterElement.offsetWidth
);
}
}
}
});
it('keeps the number of tiles stable when the visible line count changes during vertical scrolling', async () => {
const { component } = buildComponent({
rowsPerTile: 3,
autoHeight: false
});
await setEditorHeightInLines(component, 5.5);
expect(component.refs.lineTiles.children.length).toBe(3 + 2); // account for cursors and highlights containers
await setScrollTop(component, 0.5 * component.getLineHeight());
expect(component.refs.lineTiles.children.length).toBe(3 + 2); // account for cursors and highlights containers
await setScrollTop(component, 1 * component.getLineHeight());
expect(component.refs.lineTiles.children.length).toBe(3 + 2); // account for cursors and highlights containers
});
it('recycles tiles on resize', async () => {
const { component } = buildComponent({
rowsPerTile: 2,
autoHeight: false
});
await setEditorHeightInLines(component, 7);
await setScrollTop(component, 3.5 * component.getLineHeight());
const lineNode = lineNodeForScreenRow(component, 7);
await setEditorHeightInLines(component, 4);
expect(lineNodeForScreenRow(component, 7)).toBe(lineNode);
});
it("updates lines numbers when a row's foldability changes (regression)", async () => {
const { component, editor } = buildComponent({ text: 'abc\n' });
editor.setCursorBufferPosition([1, 0]);
await component.getNextUpdatePromise();
expect(
lineNumberNodeForScreenRow(component, 0).querySelector('.foldable')
).toBeNull();
editor.insertText(' def');
await component.getNextUpdatePromise();
expect(
lineNumberNodeForScreenRow(component, 0).querySelector('.foldable')
).toBeDefined();
editor.undo();
await component.getNextUpdatePromise();
expect(
lineNumberNodeForScreenRow(component, 0).querySelector('.foldable')
).toBeNull();
});
it('shows the foldable icon on the last screen row of a buffer row that can be folded', async () => {
const { component } = buildComponent({
text: 'abc\n de\nfghijklm\n no',
softWrapped: true
});
await setEditorWidthInCharacters(component, 5);
expect(
lineNumberNodeForScreenRow(component, 0).classList.contains('foldable')
).toBe(true);
expect(
lineNumberNodeForScreenRow(component, 1).classList.contains('foldable')
).toBe(false);
expect(
lineNumberNodeForScreenRow(component, 2).classList.contains('foldable')
).toBe(false);
expect(
lineNumberNodeForScreenRow(component, 3).classList.contains('foldable')
).toBe(true);
expect(
lineNumberNodeForScreenRow(component, 4).classList.contains('foldable')
).toBe(false);
});
it('renders dummy vertical and horizontal scrollbars when content overflows', async () => {
const { component, 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(verticalScrollbar.style.visibility).toBe('');
expect(horizontalScrollbar.style.right).toBe(
getHorizontalScrollbarHeight(component) + 'px'
);
expect(horizontalScrollbar.style.visibility).toBe('');
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.visibility).toBe('');
expect(horizontalScrollbar.style.visibility).toBe('hidden');
editor.setText('a'.repeat(100));
await component.getNextUpdatePromise();
expect(getVerticalScrollbarWidth(component)).toBe(0);
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(0);
expect(verticalScrollbar.style.visibility).toBe('hidden');
expect(horizontalScrollbar.style.visibility).toBe('');
editor.setText('');
await component.getNextUpdatePromise();
expect(getVerticalScrollbarWidth(component)).toBe(0);
expect(getHorizontalScrollbarHeight(component)).toBe(0);
expect(verticalScrollbar.style.visibility).toBe('hidden');
expect(horizontalScrollbar.style.visibility).toBe('hidden');
});
describe('when scrollbar styles change or the editor element is detached and then reattached', () => {
it('updates the bottom/right of dummy scrollbars and client height/width measurements', async () => {
const { component, element, editor } = buildComponent({
height: 100,
width: 100
});
expect(getHorizontalScrollbarHeight(component)).toBeGreaterThan(10);
expect(getVerticalScrollbarWidth(component)).toBeGreaterThan(10);
setScrollTop(component, 20);
setScrollLeft(component, 10);
await component.getNextUpdatePromise();
// Updating scrollbar styles.
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.refs.horizontalScrollbar.element.scrollLeft).toBe(10);
expect(component.refs.verticalScrollbar.element.scrollTop).toBe(20);
expect(component.getScrollContainerClientHeight()).toBe(100 - 10);
expect(component.getScrollContainerClientWidth()).toBe(
100 - component.getGutterContainerWidth() - 10
);
// Detaching and re-attaching the editor element.
element.remove();
jasmine.attachToDOM(element);
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.refs.horizontalScrollbar.element.scrollLeft).toBe(10);
expect(component.refs.verticalScrollbar.element.scrollTop).toBe(20);
expect(component.getScrollContainerClientHeight()).toBe(100 - 10);
expect(component.getScrollContainerClientWidth()).toBe(
100 - component.getGutterContainerWidth() - 10
);
// Ensure we don't throw an error trying to remeasure non-existent scrollbars for mini editors.
await editor.update({ mini: true });
TextEditor.didUpdateScrollbarStyles();
component.scheduleUpdate();
await component.getNextUpdatePromise();
});
});
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('hides cursors with non-empty selections when showCursorOnSelection is false', async () => {
const { component, element, editor } = buildComponent();
editor.setSelectedScreenRanges([[[0, 0], [0, 3]], [[1, 0], [1, 0]]]);
await component.getNextUpdatePromise();
{
const cursorNodes = Array.from(element.querySelectorAll('.cursor'));
expect(cursorNodes.length).toBe(2);
verifyCursorPosition(component, cursorNodes[0], 0, 3);
verifyCursorPosition(component, cursorNodes[1], 1, 0);
}
editor.update({ showCursorOnSelection: false });
await component.getNextUpdatePromise();
{
const cursorNodes = Array.from(element.querySelectorAll('.cursor'));
expect(cursorNodes.length).toBe(1);
verifyCursorPosition(component, cursorNodes[0], 1, 0);
}
editor.setSelectedScreenRanges([[[0, 0], [0, 3]], [[1, 0], [1, 4]]]);
await component.getNextUpdatePromise();
{
const cursorNodes = Array.from(element.querySelectorAll('.cursor'));
expect(cursorNodes.length).toBe(0);
}
});
it('blinks cursors when the editor is focused and the cursors are not moving', async () => {
assertDocumentFocused();
const { component, element, editor } = buildComponent();
component.props.cursorBlinkPeriod = 40;
component.props.cursorBlinkResumeDelay = 40;
editor.addCursorAtScreenPosition([1, 0]);
element.focus();
await component.getNextUpdatePromise();
const [cursor1, cursor2] = element.querySelectorAll('.cursor');
await conditionPromise(
() =>
getComputedStyle(cursor1).opacity === '1' &&
getComputedStyle(cursor2).opacity === '1'
);
await conditionPromise(
() =>
getComputedStyle(cursor1).opacity === '0' &&
getComputedStyle(cursor2).opacity === '0'
);
await conditionPromise(
() =>
getComputedStyle(cursor1).opacity === '1' &&
getComputedStyle(cursor2).opacity === '1'
);
editor.moveRight();
await component.getNextUpdatePromise();
expect(getComputedStyle(cursor1).opacity).toBe('1');
expect(getComputedStyle(cursor2).opacity).toBe('1');
});
it('gives cursors at the end of lines the width of an "x" character', async () => {
const { component, element, editor } = buildComponent();
editor.setText('abcde');
await setEditorWidthInCharacters(component, 5.5);
editor.setCursorScreenPosition([0, Infinity]);
await component.getNextUpdatePromise();
expect(element.querySelector('.cursor').offsetWidth).toBe(
Math.round(component.getBaseCharacterWidth())
);
// Clip cursor width when soft-wrap is on and the cursor is at the end of
// the line. This prevents the parent tile from disabling sub-pixel
// anti-aliasing. For some reason, adding overflow: hidden to the cursor
// container doesn't solve this issue so we're adding this workaround instead.
editor.setSoftWrapped(true);
await component.getNextUpdatePromise();
expect(element.querySelector('.cursor').offsetWidth).toBeLessThan(
Math.round(component.getBaseCharacterWidth())
);
});
it('positions and sizes cursors correctly when they are located next to a fold marker', async () => {
const { component, element, editor } = buildComponent();
editor.foldBufferRange([[0, 3], [0, 6]]);
editor.setCursorScreenPosition([0, 3]);
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 0, 3);
editor.setCursorScreenPosition([0, 4]);
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 0, 4);
});
it('positions cursors and placeholder text correctly when the lines container has a margin and/or is padded', async () => {
const { component, element, editor } = buildComponent({
placeholderText: 'testing'
});
component.refs.lineTiles.style.marginLeft = '10px';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
editor.setCursorBufferPosition([0, 3]);
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 0, 3);
editor.setCursorScreenPosition([1, 0]);
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 1, 0);
component.refs.lineTiles.style.paddingTop = '5px';
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 1, 0);
editor.setCursorScreenPosition([2, 2]);
TextEditor.didUpdateStyles();
await component.getNextUpdatePromise();
verifyCursorPosition(component, element.querySelector('.cursor'), 2, 2);
editor.setText('');
await component.getNextUpdatePromise();
const placeholderTextLeft = element
.querySelector('.placeholder-text')
.getBoundingClientRect().left;
const linesLeft = component.refs.lineTiles.getBoundingClientRect().left;
expect(placeholderTextLeft).toBe(linesLeft);
});
it('places the hidden input element at the location of the last cursor if it is visible', async () => {
const { component, editor } = buildComponent({
height: 60,
width: 120,
rowsPerTile: 2
});
const { hiddenInput } = component.refs.cursorsAndInput.refs;
setScrollTop(component, 100);
await setScrollLeft(component, 40);
expect(component.getRenderedStartRow()).toBe(4);
expect(component.getRenderedEndRow()).toBe(10);
// 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 () => {
let baseCharacterWidth, gutterContainerWidth;
{
const { component, editor } = buildComponent();
baseCharacterWidth = component.getBaseCharacterWidth();
gutterContainerWidth = component.getGutterContainerWidth();
editor.destroy();
}
const { component, element, editor } = buildComponent({
width: gutterContainerWidth + baseCharacterWidth * 55,
attach: false
});
editor.setSoftWrapped(true);
jasmine.attachToDOM(element);
expect(getEditorWidthInBaseCharacters(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('correctly forces the display layer to index visible rows when resizing (regression)', async () => {
const text = 'a'.repeat(30) + '\n' + 'b'.repeat(1000);
const { component, element, editor } = buildComponent({
height: 300,
width: 800,
attach: false,
text
});
editor.setSoftWrapped(true);
jasmine.attachToDOM(element);
element.style.width = 200 + 'px';
await component.getNextUpdatePromise();
expect(queryOnScreenLineElements(element).length).toBe(24);
});
it('decorates the line numbers of folded lines', async () => {
const { component, 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 } = component.refs;
editor.setText('a');
await component.getNextUpdatePromise();
expect(element.querySelector('.line').offsetWidth).toBe(
scrollContainer.offsetWidth - verticalScrollbarWidth
);
});
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 editorPadding = 3;
element.style.padding = editorPadding + 'px';
const initialWidth = element.offsetWidth;
const initialHeight = element.offsetHeight;
expect(initialWidth).toBe(
component.getGutterContainerWidth() +
component.getContentWidth() +
verticalScrollbarWidth +
2 * editorPadding
);
expect(initialHeight).toBe(
component.getContentHeight() +
horizontalScrollbarHeight +
2 * editorPadding
);
// When autoWidth is enabled, width adjusts to content
editor.setCursorScreenPosition([6, Infinity]);
editor.insertText('x'.repeat(50));
await component.getNextUpdatePromise();
expect(element.offsetWidth).toBe(
component.getGutterContainerWidth() +
component.getContentWidth() +
verticalScrollbarWidth +
2 * editorPadding
);
expect(element.offsetWidth).toBeGreaterThan(initialWidth);
// When autoHeight is enabled, height adjusts to content
editor.insertText('\n'.repeat(5));
await component.getNextUpdatePromise();
expect(element.offsetHeight).toBe(
component.getContentHeight() +
horizontalScrollbarHeight +
2 * editorPadding
);
expect(element.offsetHeight).toBeGreaterThan(initialHeight);
});
it('does not render the line number gutter at all if the isLineNumberGutterVisible parameter is false', () => {
const { element } = buildComponent({
lineNumberGutterVisible: false
});
expect(element.querySelector('.line-number')).toBe(null);
});
it('does not render the line numbers but still renders the line number gutter if showLineNumbers is false', async () => {
function checkScrollContainerLeft(component) {
const { scrollContainer, gutterContainer } = component.refs;
expect(scrollContainer.getBoundingClientRect().left).toBe(
Math.round(gutterContainer.element.getBoundingClientRect().right)
);
}
const { component, element, editor } = buildComponent({
showLineNumbers: false
});
expect(
Array.from(element.querySelectorAll('.line-number')).every(
e => e.textContent === ''
)
).toBe(true);
checkScrollContainerLeft(component);
await editor.update({ showLineNumbers: true });
expect(
Array.from(element.querySelectorAll('.line-number')).map(
e => e.textContent
)
).toEqual([
'00',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'10',
'11',
'12',
'13'
]);
checkScrollContainerLeft(component);
await editor.update({ showLineNumbers: false });
expect(
Array.from(element.querySelectorAll('.line-number')).every(
e => e.textContent === ''
)
).toBe(true);
checkScrollContainerLeft(component);
});
it('supports the placeholderText parameter', () => {
const placeholderText = 'Placeholder Test';
const { element } = buildComponent({ placeholderText, text: '' });
expect(element.textContent).toContain(placeholderText);
});
it('adds the data-grammar attribute and updates it when the grammar changes', async () => {
await atom.packages.activatePackage('language-javascript');
const { editor, element, component } = buildComponent();
expect(element.dataset.grammar).toBe('text plain null-grammar');
atom.grammars.assignLanguageMode(editor.getBuffer(), 'source.js');
await component.getNextUpdatePromise();
expect(element.dataset.grammar).toBe('source js');
});
it('adds the data-encoding attribute and updates it when the encoding changes', async () => {
const { editor, element, component } = buildComponent();
expect(element.dataset.encoding).toBe('utf8');
editor.setEncoding('ascii');
await component.getNextUpdatePromise();
expect(element.dataset.encoding).toBe('ascii');
});
it('adds the has-selection class when the editor has a non-empty selection', async () => {
const { editor, element, component } = buildComponent();
expect(element.classList.contains('has-selection')).toBe(false);
editor.setSelectedBufferRanges([[[0, 0], [0, 0]], [[1, 0], [1, 10]]]);
await component.getNextUpdatePromise();
expect(element.classList.contains('has-selection')).toBe(true);
editor.setSelectedBufferRanges([[[0, 0], [0, 0]], [[1, 0], [1, 0]]]);
await component.getNextUpdatePromise();
expect(element.classList.contains('has-selection')).toBe(false);
});
it('assigns buffer-row and screen-row to each line number as data fields', async () => {
const { editor, element, component } = buildComponent();
editor.setSoftWrapped(true);
await component.getNextUpdatePromise();
await setEditorWidthInCharacters(component, 40);
{
const bufferRows = queryOnScreenLineNumberElements(element).map(
e => e.dataset.bufferRow
);
const screenRows = queryOnScreenLineNumberElements(element).map(
e => e.dataset.screenRow
);
expect(bufferRows).toEqual([
'0',
'1',
'2',
'3',
'3',
'4',
'5',
'6',
'6',
'6',
'7',
'8',
'8',
'8',
'9',
'10',
'11',
'11',
'12'
]);
expect(screenRows).toEqual([
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'10',
'11',
'12',
'13',
'14',
'15',
'16',
'17',
'18'
]);
}
editor.getBuffer().insert([2, 0], '\n');
await component.getNextUpdatePromise();