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extension.ts
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extension.ts
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/*---------------------------------------------------------
* Copyright (C) Microsoft Corporation. All rights reserved.
*--------------------------------------------------------*/
import * as vscode from 'vscode';
import { subscribeToDocumentChanges, EMOJI_MENTION } from './diagnostics';
const COMMAND = 'code-actions-sample.command';
export function activate(context: vscode.ExtensionContext) {
context.subscriptions.push(
vscode.languages.registerCodeActionsProvider('markdown', new Emojizer(), {
providedCodeActionKinds: Emojizer.providedCodeActionKinds
}));
const emojiDiagnostics = vscode.languages.createDiagnosticCollection("emoji");
context.subscriptions.push(emojiDiagnostics);
subscribeToDocumentChanges(context, emojiDiagnostics);
context.subscriptions.push(
vscode.languages.registerCodeActionsProvider('markdown', new Emojinfo(), {
providedCodeActionKinds: Emojinfo.providedCodeActionKinds
})
);
context.subscriptions.push(
vscode.commands.registerCommand(COMMAND, () => vscode.env.openExternal(vscode.Uri.parse('https://unicode.org/emoji/charts-12.0/full-emoji-list.html')))
);
}
/**
* Provides code actions for converting :) to a smiley emoji.
*/
export class Emojizer implements vscode.CodeActionProvider {
public static readonly providedCodeActionKinds = [
vscode.CodeActionKind.QuickFix
];
public provideCodeActions(document: vscode.TextDocument, range: vscode.Range): vscode.CodeAction[] | undefined {
if (!this.isAtStartOfSmiley(document, range)) {
return;
}
const replaceWithSmileyCatFix = this.createFix(document, range, '😺');
const replaceWithSmileyFix = this.createFix(document, range, '😀');
// Marking a single fix as `preferred` means that users can apply it with a
// single keyboard shortcut using the `Auto Fix` command.
replaceWithSmileyFix.isPreferred = true;
const replaceWithSmileyHankyFix = this.createFix(document, range, '💩');
const commandAction = this.createCommand();
return [
replaceWithSmileyCatFix,
replaceWithSmileyFix,
replaceWithSmileyHankyFix,
commandAction
];
}
private isAtStartOfSmiley(document: vscode.TextDocument, range: vscode.Range) {
const start = range.start;
const line = document.lineAt(start.line);
return line.text[start.character] === ':' && line.text[start.character + 1] === ')';
}
private createFix(document: vscode.TextDocument, range: vscode.Range, emoji: string): vscode.CodeAction {
const fix = new vscode.CodeAction(`Convert to ${emoji}`, vscode.CodeActionKind.QuickFix);
fix.edit = new vscode.WorkspaceEdit();
fix.edit.replace(document.uri, new vscode.Range(range.start, range.start.translate(0, 2)), emoji);
return fix;
}
private createCommand(): vscode.CodeAction {
const action = new vscode.CodeAction('Learn more...', vscode.CodeActionKind.Empty);
action.command = { command: COMMAND, title: 'Learn more about emojis', tooltip: 'This will open the unicode emoji page.' };
return action;
}
}
/**
* Provides code actions corresponding to diagnostic problems.
*/
export class Emojinfo implements vscode.CodeActionProvider {
public static readonly providedCodeActionKinds = [
vscode.CodeActionKind.QuickFix
];
provideCodeActions(document: vscode.TextDocument, range: vscode.Range | vscode.Selection, context: vscode.CodeActionContext, token: vscode.CancellationToken): vscode.CodeAction[] {
// for each diagnostic entry that has the matching `code`, create a code action command
return context.diagnostics
.filter(diagnostic => diagnostic.code === EMOJI_MENTION)
.map(diagnostic => this.createCommandCodeAction(diagnostic));
}
private createCommandCodeAction(diagnostic: vscode.Diagnostic): vscode.CodeAction {
const action = new vscode.CodeAction('Learn more...', vscode.CodeActionKind.QuickFix);
action.command = { command: COMMAND, title: 'Learn more about emojis', tooltip: 'This will open the unicode emoji page.' };
action.diagnostics = [diagnostic];
action.isPreferred = true;
return action;
}
}