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https://github.com/Microsoft/vscode
synced 2024-08-28 21:39:43 +00:00
terminal: unregister csi handler when not in use for performance
Fixes https://github.com/microsoft/vscode/issues/109864
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81a25a894c
commit
6bbb17d318
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@ -946,29 +946,37 @@ export class PredictionTimeline {
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return buffer.type === 'normal' ? buffer : undefined;
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}
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}
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/**
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* Gets the escape sequence args to restore state/appearence in the cell.
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*/
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const attributesToArgs = (cell: XTermAttributes) => {
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if (cell.isAttributeDefault()) { return [0]; }
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const args = [];
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if (cell.isBold()) { args.push(1); }
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if (cell.isDim()) { args.push(2); }
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if (cell.isItalic()) { args.push(3); }
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if (cell.isUnderline()) { args.push(4); }
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if (cell.isBlink()) { args.push(5); }
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if (cell.isInverse()) { args.push(7); }
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if (cell.isInvisible()) { args.push(8); }
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if (cell.isFgRGB()) { args.push(38, 2, cell.getFgColor() >>> 24, (cell.getFgColor() >>> 16) & 0xFF, cell.getFgColor() & 0xFF); }
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if (cell.isFgPalette()) { args.push(38, 5, cell.getFgColor()); }
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if (cell.isFgDefault()) { args.push(39); }
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if (cell.isBgRGB()) { args.push(48, 2, cell.getBgColor() >>> 24, (cell.getBgColor() >>> 16) & 0xFF, cell.getBgColor() & 0xFF); }
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if (cell.isBgPalette()) { args.push(48, 5, cell.getBgColor()); }
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if (cell.isBgDefault()) { args.push(49); }
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return args;
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};
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/**
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* Gets the escape sequence to restore state/appearence in the cell.
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*/
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const attributesToSeq = (cell: XTermAttributes) => cell.isAttributeDefault()
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? `${CSI}0m`
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: [
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cell.isBold() && `${CSI}1m`,
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cell.isDim() && `${CSI}2m`,
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cell.isItalic() && `${CSI}3m`,
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cell.isUnderline() && `${CSI}4m`,
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cell.isBlink() && `${CSI}5m`,
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cell.isInverse() && `${CSI}7m`,
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cell.isInvisible() && `${CSI}8m`,
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cell.isFgRGB() && `${CSI}38;2;${cell.getFgColor() >>> 24};${(cell.getFgColor() >>> 16) & 0xFF};${cell.getFgColor() & 0xFF}m`,
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cell.isFgPalette() && `${CSI}38;5;${cell.getFgColor()}m`,
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cell.isFgDefault() && `${CSI}39m`,
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cell.isBgRGB() && `${CSI}48;2;${cell.getBgColor() >>> 24};${(cell.getBgColor() >>> 16) & 0xFF};${cell.getBgColor() & 0xFF}m`,
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cell.isBgPalette() && `${CSI}48;5;${cell.getBgColor()}m`,
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cell.isBgDefault() && `${CSI}49m`,
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].filter(seq => !!seq).join('');
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const attributesToSeq = (cell: XTermAttributes) => `${CSI}${attributesToArgs(cell).join(';')}m`;
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const arrayHasPrefixAt = <T>(a: ReadonlyArray<T>, ai: number, b: ReadonlyArray<T>) => {
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if (a.length - ai > b.length) {
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@ -1019,7 +1027,7 @@ const getColorWidth = (params: (number | number[])[], pos: number) => {
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return advance;
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};
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class TypeAheadStyle {
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class TypeAheadStyle implements IDisposable {
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private static compileArgs(args: ReadonlyArray<number>) {
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return `${CSI}${args.join(';')}m`;
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}
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@ -1035,8 +1043,9 @@ class TypeAheadStyle {
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public apply!: string;
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public undo!: string;
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private csiHandler?: IDisposable;
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constructor(value: ITerminalConfiguration['localEchoStyle']) {
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constructor(value: ITerminalConfiguration['localEchoStyle'], private readonly terminal: Terminal) {
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this.onUpdate(value);
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}
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@ -1049,9 +1058,38 @@ class TypeAheadStyle {
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}
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/**
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* Should be called when an attribut eupdate happens in the terminal.
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* Starts tracking for CSI changes in the terminal.
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*/
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public onDidWriteSGR(args: (number | number[])[]) {
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public startTracking() {
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this.expectedIncomingStyles = 0;
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this.onDidWriteSGR(attributesToArgs(core(this.terminal)._inputHandler._curAttrData));
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this.csiHandler = this.terminal.parser.registerCsiHandler({ final: 'm' }, args => {
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this.onDidWriteSGR(args);
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return false;
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});
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}
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/**
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* Stops tracking terminal CSI changes.
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*/
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@debounce(2000)
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public debounceStopTracking() {
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this.stopTracking();
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}
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/**
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* @inheritdoc
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*/
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public dispose() {
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this.stopTracking();
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}
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private stopTracking() {
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this.csiHandler?.dispose();
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this.csiHandler = undefined;
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}
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private onDidWriteSGR(args: (number | number[])[]) {
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const originalUndo = this.undoArgs;
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for (let i = 0; i < args.length;) {
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const px = args[i];
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@ -1141,7 +1179,7 @@ class TypeAheadStyle {
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}
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export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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private typeaheadStyle = new TypeAheadStyle(this.config.config.localEchoStyle);
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private typeaheadStyle?: TypeAheadStyle;
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private typeaheadThreshold = this.config.config.localEchoLatencyThreshold;
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protected lastRow?: { y: number; startingX: number };
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private timeline?: PredictionTimeline;
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@ -1162,14 +1200,11 @@ export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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}
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public activate(terminal: Terminal): void {
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const style = this.typeaheadStyle = this._register(new TypeAheadStyle(this.config.config.localEchoStyle, terminal));
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const timeline = this.timeline = new PredictionTimeline(terminal, this.typeaheadStyle);
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const stats = this.stats = this._register(new PredictionStats(this.timeline));
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timeline.setShowPredictions(this.typeaheadThreshold === 0);
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this._register(terminal.parser.registerCsiHandler({ final: 'm' }, args => {
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this.typeaheadStyle.onDidWriteSGR(args);
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return false;
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}));
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this._register(terminal.onData(e => this.onUserData(e)));
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this._register(terminal.onResize(() => {
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timeline.setShowPredictions(false);
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@ -1177,7 +1212,7 @@ export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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this.reevaluatePredictorState(stats, timeline);
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}));
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this._register(this.config.onConfigChanged(() => {
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this.typeaheadStyle.onUpdate(this.config.config.localEchoStyle);
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style.onUpdate(this.config.config.localEchoStyle);
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this.typeaheadThreshold = this.config.config.localEchoLatencyThreshold;
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this.reevaluatePredictorState(stats, timeline);
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}));
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@ -1192,6 +1227,10 @@ export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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}, statsSendTelemetryEvery);
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}
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if (timeline.length === 0) {
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style.debounceStopTracking();
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}
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this.reevaluatePredictorState(stats, timeline);
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}));
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}
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@ -1306,7 +1345,7 @@ export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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if (reader.eatCharCode(32, 126)) { // alphanum
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const char = data[reader.index - 1];
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if (this.timeline.addPrediction(buffer, new CharacterPrediction(this.typeaheadStyle, char)) && this.timeline.getCursor(buffer).x === terminal.cols) {
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if (this.timeline.addPrediction(buffer, new CharacterPrediction(this.typeaheadStyle!, char)) && this.timeline.getCursor(buffer).x === terminal.cols) {
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this.timeline.addBoundary(buffer, new TentativeBoundary(new LinewrapPrediction()));
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}
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continue;
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@ -1346,6 +1385,7 @@ export class TypeAheadAddon extends Disposable implements ITerminalAddon {
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if (this.timeline.length === 1) {
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this.deferClearingPredictions();
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this.typeaheadStyle!.startTracking();
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}
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}
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@ -149,8 +149,7 @@ suite('Workbench - Terminal Typeahead', () => {
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`${CSI}?25l`, // hide cursor
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`${CSI}2;7H`, // move cursor cursor
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`${CSI}X`, // delete character
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`${CSI}1m`, // reset style
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`${CSI}38;5;1m`, // reset style
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`${CSI}1;38;5;1m`, // reset style
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'q', // new character
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`${CSI}?25h`, // show cursor
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].join(''));
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