Autoclose multiline strings (JEP 368)

Signed-off-by: Snjezana Peco <[email protected]>

Author: snjeza

language-configuration.json

@@ -18,6 +18,10 @@
 		[
 			"(",
 			")"
+		],
+		[
+			"\"\"\"",
+			"\"\"\""
 		]
 	],
 	"autoClosingPairs": [
@@ -47,6 +51,13 @@
 			"notIn": [
 				"string"
 			]
+		},
+		{
+			"open": "\"\"\"",
+			"close": "\"\"\";",
+			"notIn": [
+				"comment"
+			]
 		}
 	],
 	"surroundingPairs": [

src/extension.ts

@@ -14,7 +14,7 @@ import { initialize as initializeRecommendation } from './recommendation';
 import { Commands } from './commands';
 import { ExtensionAPI, ClientStatus } from './extension.api';
 import { getJavaConfiguration, deleteDirectory, getBuildFilePatterns, getInclusionPatternsFromNegatedExclusion, convertToGlob, getExclusionBlob, ensureExists } from './utils';
-import { onConfigurationChange, getJavaServerMode, ServerMode, ACTIVE_BUILD_TOOL_STATE } from './settings';
+import { onConfigurationChange, getJavaServerMode, ServerMode, ACTIVE_BUILD_TOOL_STATE, handleTextBlockClosing } from './settings';
 import { logger, initializeLogFile } from './log';
 import glob = require('glob');
 import { SyntaxLanguageClient } from './syntaxLanguageClient';
@@ -464,6 +464,7 @@ export function activate(context: ExtensionContext): Promise<ExtensionAPI> {
 					}
 				}));
 			}
+			context.subscriptions.push(workspace.onDidChangeTextDocument(event => handleTextBlockClosing(event.document, event.contentChanges)));
 		});
 	});
 }

src/settings.ts

@@ -2,7 +2,7 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
-import { window, Uri, workspace, WorkspaceConfiguration, commands, ConfigurationTarget, env, ExtensionContext, TextEditor, Range, Disposable, WorkspaceFolder } from 'vscode';
+import { window, Uri, workspace, WorkspaceConfiguration, commands, ConfigurationTarget, env, ExtensionContext, TextEditor, Range, Disposable, WorkspaceFolder, TextDocument, Position, SnippetString, TextLine } from 'vscode';
 import { Commands } from './commands';
 import { cleanWorkspaceFileName } from './extension';
 import { ensureExists, getJavaConfiguration } from './utils';
@@ -287,3 +287,35 @@ function unregisterGradleWrapperPromptDialog(sha256: string) {
 		gradleWrapperPromptDialogs.splice(index, 1);
 	}
 }
+
+export function handleTextBlockClosing(document: TextDocument, changes: readonly import("vscode").TextDocumentContentChangeEvent[]): any {
+	const activeTextEditor = window.activeTextEditor;
+	const activeDocument = activeTextEditor && activeTextEditor.document;
+	if (document !== activeDocument || changes.length === 0 || document.languageId !== 'java') {
+		return;
+	}
+	const lastChange = changes[changes.length - 1];
+	if (lastChange.text === null || lastChange.text.length <= 0) {
+		return;
+	}
+	if (lastChange.text !== '"""";') {
+		return;
+	}
+	const selection = activeTextEditor.selection.active;
+	if (selection !== null) {
+		const start = new Position(selection.line, selection.character - 2);
+		const end = new Position(selection.line, selection.character + 4);
+		const range = new Range(start, end);
+		const activeText = activeDocument.getText(range);
+		if (activeText === '""""""') {
+			const tabSize = <number>activeTextEditor.options.tabSize!;
+			const tabSpaces = <boolean>activeTextEditor.options.insertSpaces!;
+			const indentLevel = 2;
+			const indentSize = tabSpaces ? indentLevel * tabSize : indentLevel;
+			const repeatChar = tabSpaces ? ' ' : '\t';
+			const text = `\n${repeatChar.repeat(indentSize)}\$\{0\}\n${repeatChar.repeat(indentSize)}`;
+			const position = new Position(selection.line, selection.character + 1);
+			activeTextEditor.insertSnippet(new SnippetString(text), position);
+		}
+	}
+}