parameterHintsWidget.js 17 KB

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  1. /*---------------------------------------------------------------------------------------------
  2. * Copyright (c) Microsoft Corporation. All rights reserved.
  3. * Licensed under the MIT License. See License.txt in the project root for license information.
  4. *--------------------------------------------------------------------------------------------*/
  5. var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
  6. var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
  7. if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
  8. else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
  9. return c > 3 && r && Object.defineProperty(target, key, r), r;
  10. };
  11. var __param = (this && this.__param) || function (paramIndex, decorator) {
  12. return function (target, key) { decorator(target, key, paramIndex); }
  13. };
  14. import * as dom from '../../../base/browser/dom.js';
  15. import * as aria from '../../../base/browser/ui/aria/aria.js';
  16. import { DomScrollableElement } from '../../../base/browser/ui/scrollbar/scrollableElement.js';
  17. import { Codicon } from '../../../base/common/codicons.js';
  18. import { Event } from '../../../base/common/event.js';
  19. import { Disposable, DisposableStore } from '../../../base/common/lifecycle.js';
  20. import { escapeRegExpCharacters } from '../../../base/common/strings.js';
  21. import { assertIsDefined } from '../../../base/common/types.js';
  22. import './parameterHints.css';
  23. import { MarkdownRenderer } from '../../browser/core/markdownRenderer.js';
  24. import { IModeService } from '../../common/services/modeService.js';
  25. import { ParameterHintsModel } from './parameterHintsModel.js';
  26. import { Context } from './provideSignatureHelp.js';
  27. import * as nls from '../../../nls.js';
  28. import { IContextKeyService } from '../../../platform/contextkey/common/contextkey.js';
  29. import { IOpenerService } from '../../../platform/opener/common/opener.js';
  30. import { editorHoverBackground, editorHoverBorder, editorHoverForeground, registerColor, textCodeBlockBackground, textLinkActiveForeground, textLinkForeground, listHighlightForeground } from '../../../platform/theme/common/colorRegistry.js';
  31. import { registerIcon } from '../../../platform/theme/common/iconRegistry.js';
  32. import { ColorScheme } from '../../../platform/theme/common/theme.js';
  33. import { registerThemingParticipant, ThemeIcon } from '../../../platform/theme/common/themeService.js';
  34. const $ = dom.$;
  35. const parameterHintsNextIcon = registerIcon('parameter-hints-next', Codicon.chevronDown, nls.localize('parameterHintsNextIcon', 'Icon for show next parameter hint.'));
  36. const parameterHintsPreviousIcon = registerIcon('parameter-hints-previous', Codicon.chevronUp, nls.localize('parameterHintsPreviousIcon', 'Icon for show previous parameter hint.'));
  37. let ParameterHintsWidget = class ParameterHintsWidget extends Disposable {
  38. constructor(editor, contextKeyService, openerService, modeService) {
  39. super();
  40. this.editor = editor;
  41. this.renderDisposeables = this._register(new DisposableStore());
  42. this.visible = false;
  43. this.announcedLabel = null;
  44. // Editor.IContentWidget.allowEditorOverflow
  45. this.allowEditorOverflow = true;
  46. this.markdownRenderer = this._register(new MarkdownRenderer({ editor }, modeService, openerService));
  47. this.model = this._register(new ParameterHintsModel(editor));
  48. this.keyVisible = Context.Visible.bindTo(contextKeyService);
  49. this.keyMultipleSignatures = Context.MultipleSignatures.bindTo(contextKeyService);
  50. this._register(this.model.onChangedHints(newParameterHints => {
  51. if (newParameterHints) {
  52. this.show();
  53. this.render(newParameterHints);
  54. }
  55. else {
  56. this.hide();
  57. }
  58. }));
  59. }
  60. createParameterHintDOMNodes() {
  61. const element = $('.editor-widget.parameter-hints-widget');
  62. const wrapper = dom.append(element, $('.phwrapper'));
  63. wrapper.tabIndex = -1;
  64. const controls = dom.append(wrapper, $('.controls'));
  65. const previous = dom.append(controls, $('.button' + ThemeIcon.asCSSSelector(parameterHintsPreviousIcon)));
  66. const overloads = dom.append(controls, $('.overloads'));
  67. const next = dom.append(controls, $('.button' + ThemeIcon.asCSSSelector(parameterHintsNextIcon)));
  68. this._register(dom.addDisposableListener(previous, 'click', e => {
  69. dom.EventHelper.stop(e);
  70. this.previous();
  71. }));
  72. this._register(dom.addDisposableListener(next, 'click', e => {
  73. dom.EventHelper.stop(e);
  74. this.next();
  75. }));
  76. const body = $('.body');
  77. const scrollbar = new DomScrollableElement(body, {});
  78. this._register(scrollbar);
  79. wrapper.appendChild(scrollbar.getDomNode());
  80. const signature = dom.append(body, $('.signature'));
  81. const docs = dom.append(body, $('.docs'));
  82. element.style.userSelect = 'text';
  83. this.domNodes = {
  84. element,
  85. signature,
  86. overloads,
  87. docs,
  88. scrollbar,
  89. };
  90. this.editor.addContentWidget(this);
  91. this.hide();
  92. this._register(this.editor.onDidChangeCursorSelection(e => {
  93. if (this.visible) {
  94. this.editor.layoutContentWidget(this);
  95. }
  96. }));
  97. const updateFont = () => {
  98. if (!this.domNodes) {
  99. return;
  100. }
  101. const fontInfo = this.editor.getOption(43 /* fontInfo */);
  102. this.domNodes.element.style.fontSize = `${fontInfo.fontSize}px`;
  103. this.domNodes.element.style.lineHeight = `${fontInfo.lineHeight / fontInfo.fontSize}`;
  104. };
  105. updateFont();
  106. this._register(Event.chain(this.editor.onDidChangeConfiguration.bind(this.editor))
  107. .filter(e => e.hasChanged(43 /* fontInfo */))
  108. .on(updateFont, null));
  109. this._register(this.editor.onDidLayoutChange(e => this.updateMaxHeight()));
  110. this.updateMaxHeight();
  111. }
  112. show() {
  113. if (this.visible) {
  114. return;
  115. }
  116. if (!this.domNodes) {
  117. this.createParameterHintDOMNodes();
  118. }
  119. this.keyVisible.set(true);
  120. this.visible = true;
  121. setTimeout(() => {
  122. if (this.domNodes) {
  123. this.domNodes.element.classList.add('visible');
  124. }
  125. }, 100);
  126. this.editor.layoutContentWidget(this);
  127. }
  128. hide() {
  129. this.renderDisposeables.clear();
  130. if (!this.visible) {
  131. return;
  132. }
  133. this.keyVisible.reset();
  134. this.visible = false;
  135. this.announcedLabel = null;
  136. if (this.domNodes) {
  137. this.domNodes.element.classList.remove('visible');
  138. }
  139. this.editor.layoutContentWidget(this);
  140. }
  141. getPosition() {
  142. if (this.visible) {
  143. return {
  144. position: this.editor.getPosition(),
  145. preference: [1 /* ABOVE */, 2 /* BELOW */]
  146. };
  147. }
  148. return null;
  149. }
  150. render(hints) {
  151. var _a;
  152. this.renderDisposeables.clear();
  153. if (!this.domNodes) {
  154. return;
  155. }
  156. const multiple = hints.signatures.length > 1;
  157. this.domNodes.element.classList.toggle('multiple', multiple);
  158. this.keyMultipleSignatures.set(multiple);
  159. this.domNodes.signature.innerText = '';
  160. this.domNodes.docs.innerText = '';
  161. const signature = hints.signatures[hints.activeSignature];
  162. if (!signature) {
  163. return;
  164. }
  165. const code = dom.append(this.domNodes.signature, $('.code'));
  166. const fontInfo = this.editor.getOption(43 /* fontInfo */);
  167. code.style.fontSize = `${fontInfo.fontSize}px`;
  168. code.style.fontFamily = fontInfo.fontFamily;
  169. const hasParameters = signature.parameters.length > 0;
  170. const activeParameterIndex = (_a = signature.activeParameter) !== null && _a !== void 0 ? _a : hints.activeParameter;
  171. if (!hasParameters) {
  172. const label = dom.append(code, $('span'));
  173. label.textContent = signature.label;
  174. }
  175. else {
  176. this.renderParameters(code, signature, activeParameterIndex);
  177. }
  178. const activeParameter = signature.parameters[activeParameterIndex];
  179. if (activeParameter === null || activeParameter === void 0 ? void 0 : activeParameter.documentation) {
  180. const documentation = $('span.documentation');
  181. if (typeof activeParameter.documentation === 'string') {
  182. documentation.textContent = activeParameter.documentation;
  183. }
  184. else {
  185. const renderedContents = this.renderMarkdownDocs(activeParameter.documentation);
  186. documentation.appendChild(renderedContents.element);
  187. }
  188. dom.append(this.domNodes.docs, $('p', {}, documentation));
  189. }
  190. if (signature.documentation === undefined) {
  191. /** no op */
  192. }
  193. else if (typeof signature.documentation === 'string') {
  194. dom.append(this.domNodes.docs, $('p', {}, signature.documentation));
  195. }
  196. else {
  197. const renderedContents = this.renderMarkdownDocs(signature.documentation);
  198. dom.append(this.domNodes.docs, renderedContents.element);
  199. }
  200. const hasDocs = this.hasDocs(signature, activeParameter);
  201. this.domNodes.signature.classList.toggle('has-docs', hasDocs);
  202. this.domNodes.docs.classList.toggle('empty', !hasDocs);
  203. this.domNodes.overloads.textContent =
  204. String(hints.activeSignature + 1).padStart(hints.signatures.length.toString().length, '0') + '/' + hints.signatures.length;
  205. if (activeParameter) {
  206. let labelToAnnounce = '';
  207. const param = signature.parameters[activeParameterIndex];
  208. if (Array.isArray(param.label)) {
  209. labelToAnnounce = signature.label.substring(param.label[0], param.label[1]);
  210. }
  211. else {
  212. labelToAnnounce = param.label;
  213. }
  214. if (param.documentation) {
  215. labelToAnnounce += typeof param.documentation === 'string' ? `, ${param.documentation}` : `, ${param.documentation.value}`;
  216. }
  217. if (signature.documentation) {
  218. labelToAnnounce += typeof signature.documentation === 'string' ? `, ${signature.documentation}` : `, ${signature.documentation.value}`;
  219. }
  220. // Select method gets called on every user type while parameter hints are visible.
  221. // We do not want to spam the user with same announcements, so we only announce if the current parameter changed.
  222. if (this.announcedLabel !== labelToAnnounce) {
  223. aria.alert(nls.localize('hint', "{0}, hint", labelToAnnounce));
  224. this.announcedLabel = labelToAnnounce;
  225. }
  226. }
  227. this.editor.layoutContentWidget(this);
  228. this.domNodes.scrollbar.scanDomNode();
  229. }
  230. renderMarkdownDocs(markdown) {
  231. const renderedContents = this.renderDisposeables.add(this.markdownRenderer.render(markdown, {
  232. asyncRenderCallback: () => {
  233. var _a;
  234. (_a = this.domNodes) === null || _a === void 0 ? void 0 : _a.scrollbar.scanDomNode();
  235. }
  236. }));
  237. renderedContents.element.classList.add('markdown-docs');
  238. return renderedContents;
  239. }
  240. hasDocs(signature, activeParameter) {
  241. if (activeParameter && typeof activeParameter.documentation === 'string' && assertIsDefined(activeParameter.documentation).length > 0) {
  242. return true;
  243. }
  244. if (activeParameter && typeof activeParameter.documentation === 'object' && assertIsDefined(activeParameter.documentation).value.length > 0) {
  245. return true;
  246. }
  247. if (signature.documentation && typeof signature.documentation === 'string' && assertIsDefined(signature.documentation).length > 0) {
  248. return true;
  249. }
  250. if (signature.documentation && typeof signature.documentation === 'object' && assertIsDefined(signature.documentation.value).length > 0) {
  251. return true;
  252. }
  253. return false;
  254. }
  255. renderParameters(parent, signature, activeParameterIndex) {
  256. const [start, end] = this.getParameterLabelOffsets(signature, activeParameterIndex);
  257. const beforeSpan = document.createElement('span');
  258. beforeSpan.textContent = signature.label.substring(0, start);
  259. const paramSpan = document.createElement('span');
  260. paramSpan.textContent = signature.label.substring(start, end);
  261. paramSpan.className = 'parameter active';
  262. const afterSpan = document.createElement('span');
  263. afterSpan.textContent = signature.label.substring(end);
  264. dom.append(parent, beforeSpan, paramSpan, afterSpan);
  265. }
  266. getParameterLabelOffsets(signature, paramIdx) {
  267. const param = signature.parameters[paramIdx];
  268. if (!param) {
  269. return [0, 0];
  270. }
  271. else if (Array.isArray(param.label)) {
  272. return param.label;
  273. }
  274. else if (!param.label.length) {
  275. return [0, 0];
  276. }
  277. else {
  278. const regex = new RegExp(`(\\W|^)${escapeRegExpCharacters(param.label)}(?=\\W|$)`, 'g');
  279. regex.test(signature.label);
  280. const idx = regex.lastIndex - param.label.length;
  281. return idx >= 0
  282. ? [idx, regex.lastIndex]
  283. : [0, 0];
  284. }
  285. }
  286. next() {
  287. this.editor.focus();
  288. this.model.next();
  289. }
  290. previous() {
  291. this.editor.focus();
  292. this.model.previous();
  293. }
  294. cancel() {
  295. this.model.cancel();
  296. }
  297. getDomNode() {
  298. if (!this.domNodes) {
  299. this.createParameterHintDOMNodes();
  300. }
  301. return this.domNodes.element;
  302. }
  303. getId() {
  304. return ParameterHintsWidget.ID;
  305. }
  306. trigger(context) {
  307. this.model.trigger(context, 0);
  308. }
  309. updateMaxHeight() {
  310. if (!this.domNodes) {
  311. return;
  312. }
  313. const height = Math.max(this.editor.getLayoutInfo().height / 4, 250);
  314. const maxHeight = `${height}px`;
  315. this.domNodes.element.style.maxHeight = maxHeight;
  316. const wrapper = this.domNodes.element.getElementsByClassName('phwrapper');
  317. if (wrapper.length) {
  318. wrapper[0].style.maxHeight = maxHeight;
  319. }
  320. }
  321. };
  322. ParameterHintsWidget.ID = 'editor.widget.parameterHintsWidget';
  323. ParameterHintsWidget = __decorate([
  324. __param(1, IContextKeyService),
  325. __param(2, IOpenerService),
  326. __param(3, IModeService)
  327. ], ParameterHintsWidget);
  328. export { ParameterHintsWidget };
  329. export const editorHoverWidgetHighlightForeground = registerColor('editorHoverWidget.highlightForeground', { dark: listHighlightForeground, light: listHighlightForeground, hc: listHighlightForeground }, nls.localize('editorHoverWidgetHighlightForeground', 'Foreground color of the active item in the parameter hint.'));
  330. registerThemingParticipant((theme, collector) => {
  331. const border = theme.getColor(editorHoverBorder);
  332. if (border) {
  333. const borderWidth = theme.type === ColorScheme.HIGH_CONTRAST ? 2 : 1;
  334. collector.addRule(`.monaco-editor .parameter-hints-widget { border: ${borderWidth}px solid ${border}; }`);
  335. collector.addRule(`.monaco-editor .parameter-hints-widget.multiple .body { border-left: 1px solid ${border.transparent(0.5)}; }`);
  336. collector.addRule(`.monaco-editor .parameter-hints-widget .signature.has-docs { border-bottom: 1px solid ${border.transparent(0.5)}; }`);
  337. }
  338. const background = theme.getColor(editorHoverBackground);
  339. if (background) {
  340. collector.addRule(`.monaco-editor .parameter-hints-widget { background-color: ${background}; }`);
  341. }
  342. const link = theme.getColor(textLinkForeground);
  343. if (link) {
  344. collector.addRule(`.monaco-editor .parameter-hints-widget a { color: ${link}; }`);
  345. }
  346. const linkHover = theme.getColor(textLinkActiveForeground);
  347. if (linkHover) {
  348. collector.addRule(`.monaco-editor .parameter-hints-widget a:hover { color: ${linkHover}; }`);
  349. }
  350. const foreground = theme.getColor(editorHoverForeground);
  351. if (foreground) {
  352. collector.addRule(`.monaco-editor .parameter-hints-widget { color: ${foreground}; }`);
  353. }
  354. const codeBackground = theme.getColor(textCodeBlockBackground);
  355. if (codeBackground) {
  356. collector.addRule(`.monaco-editor .parameter-hints-widget code { background-color: ${codeBackground}; }`);
  357. }
  358. const parameterHighlightColor = theme.getColor(editorHoverWidgetHighlightForeground);
  359. if (parameterHighlightColor) {
  360. collector.addRule(`.monaco-editor .parameter-hints-widget .parameter.active { color: ${parameterHighlightColor}}`);
  361. }
  362. });