Files
azuredatastudio/src/vs/editor/common/viewModel/viewModelImpl.ts
2018-06-05 11:24:51 -07:00

684 lines
26 KiB
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the Source EULA. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
'use strict';
import * as strings from 'vs/base/common/strings';
import { Position, IPosition } from 'vs/editor/common/core/position';
import { Range } from 'vs/editor/common/core/range';
import * as editorCommon from 'vs/editor/common/editorCommon';
import { TokenizationRegistry, ColorId, LanguageId } from 'vs/editor/common/modes';
import { tokenizeLineToHTML } from 'vs/editor/common/modes/textToHtmlTokenizer';
import { ViewModelDecorations } from 'vs/editor/common/viewModel/viewModelDecorations';
import { MinimapLinesRenderingData, ViewLineRenderingData, ViewModelDecoration, IViewModel, ICoordinatesConverter, IOverviewRulerDecorations, ViewLineData } from 'vs/editor/common/viewModel/viewModel';
import { SplitLinesCollection, IViewModelLinesCollection, IdentityLinesCollection } from 'vs/editor/common/viewModel/splitLinesCollection';
import * as viewEvents from 'vs/editor/common/view/viewEvents';
import { MinimapTokensColorTracker } from 'vs/editor/common/view/minimapCharRenderer';
import * as textModelEvents from 'vs/editor/common/model/textModelEvents';
import { IConfigurationChangedEvent } from 'vs/editor/common/config/editorOptions';
import { CharacterHardWrappingLineMapperFactory } from 'vs/editor/common/viewModel/characterHardWrappingLineMapper';
import { ViewLayout } from 'vs/editor/common/viewLayout/viewLayout';
import { Color } from 'vs/base/common/color';
import { IDisposable } from 'vs/base/common/lifecycle';
import { ITheme } from 'vs/platform/theme/common/themeService';
import { ModelDecorationOverviewRulerOptions } from 'vs/editor/common/model/textModel';
import { ITextModel, EndOfLinePreference, TrackedRangeStickiness, IActiveIndentGuideInfo } from 'vs/editor/common/model';
const USE_IDENTITY_LINES_COLLECTION = true;
export class ViewModel extends viewEvents.ViewEventEmitter implements IViewModel {
private readonly editorId: number;
private readonly configuration: editorCommon.IConfiguration;
private readonly model: ITextModel;
private hasFocus: boolean;
private viewportStartLine: number;
private viewportStartLineTrackedRange: string;
private viewportStartLineTop: number;
private readonly lines: IViewModelLinesCollection;
public readonly coordinatesConverter: ICoordinatesConverter;
public readonly viewLayout: ViewLayout;
private readonly decorations: ViewModelDecorations;
constructor(editorId: number, configuration: editorCommon.IConfiguration, model: ITextModel, scheduleAtNextAnimationFrame: (callback: () => void) => IDisposable) {
super();
this.editorId = editorId;
this.configuration = configuration;
this.model = model;
this.hasFocus = false;
this.viewportStartLine = -1;
this.viewportStartLineTrackedRange = null;
this.viewportStartLineTop = 0;
if (USE_IDENTITY_LINES_COLLECTION && this.model.isTooLargeForTokenization()) {
this.lines = new IdentityLinesCollection(this.model);
} else {
const conf = this.configuration.editor;
let hardWrappingLineMapperFactory = new CharacterHardWrappingLineMapperFactory(
conf.wrappingInfo.wordWrapBreakBeforeCharacters,
conf.wrappingInfo.wordWrapBreakAfterCharacters,
conf.wrappingInfo.wordWrapBreakObtrusiveCharacters
);
this.lines = new SplitLinesCollection(
this.model,
hardWrappingLineMapperFactory,
this.model.getOptions().tabSize,
conf.wrappingInfo.wrappingColumn,
conf.fontInfo.typicalFullwidthCharacterWidth / conf.fontInfo.typicalHalfwidthCharacterWidth,
conf.wrappingInfo.wrappingIndent
);
}
this.coordinatesConverter = this.lines.createCoordinatesConverter();
this.viewLayout = this._register(new ViewLayout(this.configuration, this.getLineCount(), scheduleAtNextAnimationFrame));
this._register(this.viewLayout.onDidScroll((e) => {
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewScrollChangedEvent(e));
} finally {
this._endEmit();
}
}));
this.decorations = new ViewModelDecorations(this.editorId, this.model, this.configuration, this.lines, this.coordinatesConverter);
this._registerModelEvents();
this._register(this.configuration.onDidChange((e) => {
try {
const eventsCollector = this._beginEmit();
this._onConfigurationChanged(eventsCollector, e);
} finally {
this._endEmit();
}
}));
this._register(MinimapTokensColorTracker.getInstance().onDidChange(() => {
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewTokensColorsChangedEvent());
} finally {
this._endEmit();
}
}));
}
public dispose(): void {
// First remove listeners, as disposing the lines might end up sending
// model decoration changed events ... and we no longer care about them ...
super.dispose();
this.decorations.dispose();
this.lines.dispose();
this.viewportStartLineTrackedRange = this.model._setTrackedRange(this.viewportStartLineTrackedRange, null, TrackedRangeStickiness.NeverGrowsWhenTypingAtEdges);
}
public setHasFocus(hasFocus: boolean): void {
this.hasFocus = hasFocus;
}
private _onConfigurationChanged(eventsCollector: viewEvents.ViewEventsCollector, e: IConfigurationChangedEvent): void {
// We might need to restore the current centered view range, so save it (if available)
let previousViewportStartModelPosition: Position = null;
if (this.viewportStartLine !== -1) {
let previousViewportStartViewPosition = new Position(this.viewportStartLine, this.getLineMinColumn(this.viewportStartLine));
previousViewportStartModelPosition = this.coordinatesConverter.convertViewPositionToModelPosition(previousViewportStartViewPosition);
}
let restorePreviousViewportStart = false;
const conf = this.configuration.editor;
if (this.lines.setWrappingSettings(conf.wrappingInfo.wrappingIndent, conf.wrappingInfo.wrappingColumn, conf.fontInfo.typicalFullwidthCharacterWidth / conf.fontInfo.typicalHalfwidthCharacterWidth)) {
eventsCollector.emit(new viewEvents.ViewFlushedEvent());
eventsCollector.emit(new viewEvents.ViewLineMappingChangedEvent());
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
this.decorations.onLineMappingChanged();
this.viewLayout.onFlushed(this.getLineCount());
if (this.viewLayout.getCurrentScrollTop() !== 0) {
// Never change the scroll position from 0 to something else...
restorePreviousViewportStart = true;
}
}
if (e.readOnly) {
// Must read again all decorations due to readOnly filtering
this.decorations.reset();
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
}
eventsCollector.emit(new viewEvents.ViewConfigurationChangedEvent(e));
this.viewLayout.onConfigurationChanged(e);
if (restorePreviousViewportStart && previousViewportStartModelPosition) {
const viewPosition = this.coordinatesConverter.convertModelPositionToViewPosition(previousViewportStartModelPosition);
const viewPositionTop = this.viewLayout.getVerticalOffsetForLineNumber(viewPosition.lineNumber);
this.viewLayout.deltaScrollNow(0, viewPositionTop - this.viewportStartLineTop);
}
}
private _registerModelEvents(): void {
this._register(this.model.onDidChangeRawContentFast((e) => {
try {
const eventsCollector = this._beginEmit();
let hadOtherModelChange = false;
let hadModelLineChangeThatChangedLineMapping = false;
const changes = e.changes;
const versionId = e.versionId;
for (let j = 0, lenJ = changes.length; j < lenJ; j++) {
const change = changes[j];
switch (change.changeType) {
case textModelEvents.RawContentChangedType.Flush: {
this.lines.onModelFlushed();
eventsCollector.emit(new viewEvents.ViewFlushedEvent());
this.decorations.reset();
this.viewLayout.onFlushed(this.getLineCount());
hadOtherModelChange = true;
break;
}
case textModelEvents.RawContentChangedType.LinesDeleted: {
const linesDeletedEvent = this.lines.onModelLinesDeleted(versionId, change.fromLineNumber, change.toLineNumber);
if (linesDeletedEvent !== null) {
eventsCollector.emit(linesDeletedEvent);
this.viewLayout.onLinesDeleted(linesDeletedEvent.fromLineNumber, linesDeletedEvent.toLineNumber);
}
hadOtherModelChange = true;
break;
}
case textModelEvents.RawContentChangedType.LinesInserted: {
const linesInsertedEvent = this.lines.onModelLinesInserted(versionId, change.fromLineNumber, change.toLineNumber, change.detail);
if (linesInsertedEvent !== null) {
eventsCollector.emit(linesInsertedEvent);
this.viewLayout.onLinesInserted(linesInsertedEvent.fromLineNumber, linesInsertedEvent.toLineNumber);
}
hadOtherModelChange = true;
break;
}
case textModelEvents.RawContentChangedType.LineChanged: {
const [lineMappingChanged, linesChangedEvent, linesInsertedEvent, linesDeletedEvent] = this.lines.onModelLineChanged(versionId, change.lineNumber, change.detail);
hadModelLineChangeThatChangedLineMapping = lineMappingChanged;
if (linesChangedEvent) {
eventsCollector.emit(linesChangedEvent);
}
if (linesInsertedEvent) {
eventsCollector.emit(linesInsertedEvent);
this.viewLayout.onLinesInserted(linesInsertedEvent.fromLineNumber, linesInsertedEvent.toLineNumber);
}
if (linesDeletedEvent) {
eventsCollector.emit(linesDeletedEvent);
this.viewLayout.onLinesDeleted(linesDeletedEvent.fromLineNumber, linesDeletedEvent.toLineNumber);
}
break;
}
case textModelEvents.RawContentChangedType.EOLChanged: {
// Nothing to do. The new version will be accepted below
break;
}
}
}
this.lines.acceptVersionId(versionId);
this.viewLayout.onHeightMaybeChanged();
if (!hadOtherModelChange && hadModelLineChangeThatChangedLineMapping) {
eventsCollector.emit(new viewEvents.ViewLineMappingChangedEvent());
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
this.decorations.onLineMappingChanged();
}
} finally {
this._endEmit();
}
// Update the configuration and reset the centered view line
this.viewportStartLine = -1;
this.configuration.setMaxLineNumber(this.model.getLineCount());
// Recover viewport
if (!this.hasFocus && this.model.getAttachedEditorCount() >= 2 && this.viewportStartLineTrackedRange) {
const modelRange = this.model._getTrackedRange(this.viewportStartLineTrackedRange);
if (modelRange) {
const viewPosition = this.coordinatesConverter.convertModelPositionToViewPosition(modelRange.getStartPosition());
const viewPositionTop = this.viewLayout.getVerticalOffsetForLineNumber(viewPosition.lineNumber);
this.viewLayout.deltaScrollNow(0, viewPositionTop - this.viewportStartLineTop);
}
}
}));
this._register(this.model.onDidChangeTokens((e) => {
let viewRanges: { fromLineNumber: number; toLineNumber: number; }[] = [];
for (let j = 0, lenJ = e.ranges.length; j < lenJ; j++) {
const modelRange = e.ranges[j];
const viewStartLineNumber = this.coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.fromLineNumber, 1)).lineNumber;
const viewEndLineNumber = this.coordinatesConverter.convertModelPositionToViewPosition(new Position(modelRange.toLineNumber, this.model.getLineMaxColumn(modelRange.toLineNumber))).lineNumber;
viewRanges[j] = {
fromLineNumber: viewStartLineNumber,
toLineNumber: viewEndLineNumber
};
}
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewTokensChangedEvent(viewRanges));
} finally {
this._endEmit();
}
}));
this._register(this.model.onDidChangeLanguageConfiguration((e) => {
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewLanguageConfigurationEvent());
} finally {
this._endEmit();
}
}));
this._register(this.model.onDidChangeOptions((e) => {
// A tab size change causes a line mapping changed event => all view parts will repaint OK, no further event needed here
if (this.lines.setTabSize(this.model.getOptions().tabSize)) {
this.decorations.onLineMappingChanged();
this.viewLayout.onFlushed(this.getLineCount());
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewFlushedEvent());
eventsCollector.emit(new viewEvents.ViewLineMappingChangedEvent());
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
} finally {
this._endEmit();
}
}
}));
this._register(this.model.onDidChangeDecorations((e) => {
this.decorations.onModelDecorationsChanged();
try {
const eventsCollector = this._beginEmit();
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
} finally {
this._endEmit();
}
}));
}
public setHiddenAreas(ranges: Range[]): void {
try {
const eventsCollector = this._beginEmit();
let lineMappingChanged = this.lines.setHiddenAreas(ranges);
if (lineMappingChanged) {
eventsCollector.emit(new viewEvents.ViewFlushedEvent());
eventsCollector.emit(new viewEvents.ViewLineMappingChangedEvent());
eventsCollector.emit(new viewEvents.ViewDecorationsChangedEvent());
this.decorations.onLineMappingChanged();
this.viewLayout.onFlushed(this.getLineCount());
}
} finally {
this._endEmit();
}
}
public getVisibleRanges(): Range[] {
const visibleViewRange = this.getCompletelyVisibleViewRange();
const visibleRange = this.coordinatesConverter.convertViewRangeToModelRange(visibleViewRange);
const hiddenAreas = this.lines.getHiddenAreas();
if (hiddenAreas.length === 0) {
return [visibleRange];
}
let result: Range[] = [], resultLen = 0;
let startLineNumber = visibleRange.startLineNumber;
let startColumn = visibleRange.startColumn;
let endLineNumber = visibleRange.endLineNumber;
let endColumn = visibleRange.endColumn;
for (let i = 0, len = hiddenAreas.length; i < len; i++) {
const hiddenStartLineNumber = hiddenAreas[i].startLineNumber;
const hiddenEndLineNumber = hiddenAreas[i].endLineNumber;
if (hiddenEndLineNumber < startLineNumber) {
continue;
}
if (hiddenStartLineNumber > endLineNumber) {
continue;
}
if (startLineNumber < hiddenStartLineNumber) {
result[resultLen++] = new Range(
startLineNumber, startColumn,
hiddenStartLineNumber - 1, this.model.getLineMaxColumn(hiddenStartLineNumber - 1)
);
}
startLineNumber = hiddenEndLineNumber + 1;
startColumn = 1;
}
if (startLineNumber < endLineNumber || (startLineNumber === endLineNumber && startColumn < endColumn)) {
result[resultLen++] = new Range(
startLineNumber, startColumn,
endLineNumber, endColumn
);
}
return result;
}
public getCompletelyVisibleViewRange(): Range {
const partialData = this.viewLayout.getLinesViewportData();
const startViewLineNumber = partialData.completelyVisibleStartLineNumber;
const endViewLineNumber = partialData.completelyVisibleEndLineNumber;
return new Range(
startViewLineNumber, this.getLineMinColumn(startViewLineNumber),
endViewLineNumber, this.getLineMaxColumn(endViewLineNumber)
);
}
public getCompletelyVisibleViewRangeAtScrollTop(scrollTop: number): Range {
const partialData = this.viewLayout.getLinesViewportDataAtScrollTop(scrollTop);
const startViewLineNumber = partialData.completelyVisibleStartLineNumber;
const endViewLineNumber = partialData.completelyVisibleEndLineNumber;
return new Range(
startViewLineNumber, this.getLineMinColumn(startViewLineNumber),
endViewLineNumber, this.getLineMaxColumn(endViewLineNumber)
);
}
public saveState(): editorCommon.IViewState {
const compatViewState = this.viewLayout.saveState();
const scrollTop = compatViewState.scrollTop;
const firstViewLineNumber = this.viewLayout.getLineNumberAtVerticalOffset(scrollTop);
const firstPosition = this.coordinatesConverter.convertViewPositionToModelPosition(new Position(firstViewLineNumber, this.getLineMinColumn(firstViewLineNumber)));
const firstPositionDeltaTop = this.viewLayout.getVerticalOffsetForLineNumber(firstViewLineNumber) - scrollTop;
return {
scrollLeft: compatViewState.scrollLeft,
firstPosition: firstPosition,
firstPositionDeltaTop: firstPositionDeltaTop
};
}
public reduceRestoreState(state: editorCommon.IViewState): { scrollLeft: number; scrollTop: number; } {
if (typeof state.firstPosition === 'undefined') {
// This is a view state serialized by an older version
return this._reduceRestoreStateCompatibility(state);
}
const modelPosition = this.model.validatePosition(state.firstPosition);
const viewPosition = this.coordinatesConverter.convertModelPositionToViewPosition(modelPosition);
const scrollTop = this.viewLayout.getVerticalOffsetForLineNumber(viewPosition.lineNumber) - state.firstPositionDeltaTop;
return {
scrollLeft: state.scrollLeft,
scrollTop: scrollTop
};
}
private _reduceRestoreStateCompatibility(state: editorCommon.IViewState): { scrollLeft: number; scrollTop: number; } {
return {
scrollLeft: state.scrollLeft,
scrollTop: state.scrollTopWithoutViewZones
};
}
public getTabSize(): number {
return this.model.getOptions().tabSize;
}
public getLineCount(): number {
return this.lines.getViewLineCount();
}
/**
* Gives a hint that a lot of requests are about to come in for these line numbers.
*/
public setViewport(startLineNumber: number, endLineNumber: number, centeredLineNumber: number): void {
this.lines.warmUpLookupCache(startLineNumber, endLineNumber);
this.viewportStartLine = startLineNumber;
let position = this.coordinatesConverter.convertViewPositionToModelPosition(new Position(startLineNumber, this.getLineMinColumn(startLineNumber)));
this.viewportStartLineTrackedRange = this.model._setTrackedRange(this.viewportStartLineTrackedRange, new Range(position.lineNumber, position.column, position.lineNumber, position.column), TrackedRangeStickiness.NeverGrowsWhenTypingAtEdges);
this.viewportStartLineTop = this.viewLayout.getVerticalOffsetForLineNumber(startLineNumber);
}
public getActiveIndentGuide(lineNumber: number, minLineNumber: number, maxLineNumber: number): IActiveIndentGuideInfo {
return this.lines.getActiveIndentGuide(lineNumber, minLineNumber, maxLineNumber);
}
public getLinesIndentGuides(startLineNumber: number, endLineNumber: number): number[] {
return this.lines.getViewLinesIndentGuides(startLineNumber, endLineNumber);
}
public getLineContent(lineNumber: number): string {
return this.lines.getViewLineContent(lineNumber);
}
public getLineLength(lineNumber: number): number {
return this.lines.getViewLineLength(lineNumber);
}
public getLineMinColumn(lineNumber: number): number {
return this.lines.getViewLineMinColumn(lineNumber);
}
public getLineMaxColumn(lineNumber: number): number {
return this.lines.getViewLineMaxColumn(lineNumber);
}
public getLineFirstNonWhitespaceColumn(lineNumber: number): number {
const result = strings.firstNonWhitespaceIndex(this.getLineContent(lineNumber));
if (result === -1) {
return 0;
}
return result + 1;
}
public getLineLastNonWhitespaceColumn(lineNumber: number): number {
const result = strings.lastNonWhitespaceIndex(this.getLineContent(lineNumber));
if (result === -1) {
return 0;
}
return result + 2;
}
public getDecorationsInViewport(visibleRange: Range): ViewModelDecoration[] {
return this.decorations.getDecorationsViewportData(visibleRange).decorations;
}
public getViewLineRenderingData(visibleRange: Range, lineNumber: number): ViewLineRenderingData {
let mightContainRTL = this.model.mightContainRTL();
let mightContainNonBasicASCII = this.model.mightContainNonBasicASCII();
let tabSize = this.getTabSize();
let lineData = this.lines.getViewLineData(lineNumber);
let allInlineDecorations = this.decorations.getDecorationsViewportData(visibleRange).inlineDecorations;
let inlineDecorations = allInlineDecorations[lineNumber - visibleRange.startLineNumber];
return new ViewLineRenderingData(
lineData.minColumn,
lineData.maxColumn,
lineData.content,
mightContainRTL,
mightContainNonBasicASCII,
lineData.tokens,
inlineDecorations,
tabSize
);
}
public getViewLineData(lineNumber: number): ViewLineData {
return this.lines.getViewLineData(lineNumber);
}
public getMinimapLinesRenderingData(startLineNumber: number, endLineNumber: number, needed: boolean[]): MinimapLinesRenderingData {
let result = this.lines.getViewLinesData(startLineNumber, endLineNumber, needed);
return new MinimapLinesRenderingData(
this.getTabSize(),
result
);
}
public getAllOverviewRulerDecorations(theme: ITheme): IOverviewRulerDecorations {
return this.lines.getAllOverviewRulerDecorations(this.editorId, this.configuration.editor.readOnly, theme);
}
public invalidateOverviewRulerColorCache(): void {
const decorations = this.model.getOverviewRulerDecorations();
for (let i = 0, len = decorations.length; i < len; i++) {
const decoration = decorations[i];
const opts = <ModelDecorationOverviewRulerOptions>decoration.options.overviewRuler;
opts._resolvedColor = null;
}
}
public getValueInRange(range: Range, eol: EndOfLinePreference): string {
const modelRange = this.coordinatesConverter.convertViewRangeToModelRange(range);
return this.model.getValueInRange(modelRange, eol);
}
public getModelLineMaxColumn(modelLineNumber: number): number {
return this.model.getLineMaxColumn(modelLineNumber);
}
public validateModelPosition(position: IPosition): Position {
return this.model.validatePosition(position);
}
public deduceModelPositionRelativeToViewPosition(viewAnchorPosition: Position, deltaOffset: number, lineFeedCnt: number): Position {
const modelAnchor = this.coordinatesConverter.convertViewPositionToModelPosition(viewAnchorPosition);
if (this.model.getEOL().length === 2) {
// This model uses CRLF, so the delta must take that into account
if (deltaOffset < 0) {
deltaOffset -= lineFeedCnt;
} else {
deltaOffset += lineFeedCnt;
}
}
const modelAnchorOffset = this.model.getOffsetAt(modelAnchor);
const resultOffset = modelAnchorOffset + deltaOffset;
return this.model.getPositionAt(resultOffset);
}
public getEOL(): string {
return this.model.getEOL();
}
public getPlainTextToCopy(ranges: Range[], emptySelectionClipboard: boolean, forceCRLF: boolean): string | string[] {
const newLineCharacter = forceCRLF ? '\r\n' : this.model.getEOL();
ranges = ranges.slice(0);
ranges.sort(Range.compareRangesUsingStarts);
const nonEmptyRanges = ranges.filter((r) => !r.isEmpty());
if (nonEmptyRanges.length === 0) {
if (!emptySelectionClipboard) {
return '';
}
const modelLineNumbers = ranges.map((r) => {
const viewLineStart = new Position(r.startLineNumber, 1);
return this.coordinatesConverter.convertViewPositionToModelPosition(viewLineStart).lineNumber;
});
let result = '';
for (let i = 0; i < modelLineNumbers.length; i++) {
if (i > 0 && modelLineNumbers[i - 1] === modelLineNumbers[i]) {
continue;
}
result += this.model.getLineContent(modelLineNumbers[i]) + newLineCharacter;
}
return result;
}
let result: string[] = [];
for (let i = 0; i < nonEmptyRanges.length; i++) {
result.push(this.getValueInRange(nonEmptyRanges[i], forceCRLF ? EndOfLinePreference.CRLF : EndOfLinePreference.TextDefined));
}
return result.length === 1 ? result[0] : result;
}
public getHTMLToCopy(viewRanges: Range[], emptySelectionClipboard: boolean): string {
if (this.model.getLanguageIdentifier().id === LanguageId.PlainText) {
return null;
}
if (viewRanges.length !== 1) {
// no multiple selection support at this time
return null;
}
let range = this.coordinatesConverter.convertViewRangeToModelRange(viewRanges[0]);
if (range.isEmpty()) {
if (!emptySelectionClipboard) {
// nothing to copy
return null;
}
let lineNumber = range.startLineNumber;
range = new Range(lineNumber, this.model.getLineMinColumn(lineNumber), lineNumber, this.model.getLineMaxColumn(lineNumber));
}
const fontInfo = this.configuration.editor.fontInfo;
const colorMap = this._getColorMap();
return (
`<div style="`
+ `color: ${colorMap[ColorId.DefaultForeground]};`
+ `background-color: ${colorMap[ColorId.DefaultBackground]};`
+ `font-family: ${fontInfo.fontFamily};`
+ `font-weight: ${fontInfo.fontWeight};`
+ `font-size: ${fontInfo.fontSize}px;`
+ `line-height: ${fontInfo.lineHeight}px;`
+ `white-space: pre;`
+ `">`
+ this._getHTMLToCopy(range, colorMap)
+ '</div>'
);
}
private _getHTMLToCopy(modelRange: Range, colorMap: string[]): string {
const startLineNumber = modelRange.startLineNumber;
const startColumn = modelRange.startColumn;
const endLineNumber = modelRange.endLineNumber;
const endColumn = modelRange.endColumn;
const tabSize = this.getTabSize();
let result = '';
for (let lineNumber = startLineNumber; lineNumber <= endLineNumber; lineNumber++) {
const lineTokens = this.model.getLineTokens(lineNumber);
const lineContent = lineTokens.getLineContent();
const startOffset = (lineNumber === startLineNumber ? startColumn - 1 : 0);
const endOffset = (lineNumber === endLineNumber ? endColumn - 1 : lineContent.length);
if (lineContent === '') {
result += '<br>';
} else {
result += tokenizeLineToHTML(lineContent, lineTokens.inflate(), colorMap, startOffset, endOffset, tabSize);
}
}
return result;
}
private _getColorMap(): string[] {
let colorMap = TokenizationRegistry.getColorMap();
let result: string[] = [null];
for (let i = 1, len = colorMap.length; i < len; i++) {
result[i] = Color.Format.CSS.formatHex(colorMap[i]);
}
return result;
}
}