From 7dd109c2dfdb8cc8b0748d4858da08403c4cc3f3 Mon Sep 17 00:00:00 2001
From: Connor Peet <connor@peet.io>
Date: Wed, 10 Jul 2019 15:49:06 -0700
Subject: [PATCH] feat(markdown): add render command (fixes #75612)

This adds a command which renders the provided document, or the active
editor if one is provided. Following the pattern of some of the preview
commands, it returned `undefined` if there's no document provided and
no active text editor. Otherwise, seems to work...

```ts
const html = await vscode.commands.executeCommand<string>('markdown.render');
```

A way to render arbitrary strings in addition to documents may be useful at
some point in the future. However, I didn't implement that here as that'd
require some refactoring of the markdown engine. If we're interested though
I could certainly give that a shot.
---
 .../markdown-language-features/package.json   |  3 +-
 .../src/commands/index.ts                     |  1 +
 .../src/commands/renderDocument.ts            | 30 +++++++++++++++++++
 .../src/extension.ts                          |  1 +
 4 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 extensions/markdown-language-features/src/commands/renderDocument.ts

diff --git a/extensions/markdown-language-features/package.json b/extensions/markdown-language-features/package.json
index 8e841a982aa..8a53e3fa331 100644
--- a/extensions/markdown-language-features/package.json
+++ b/extensions/markdown-language-features/package.json
@@ -24,6 +24,7 @@
 		"onCommand:markdown.showLockedPreviewToSide",
 		"onCommand:markdown.showSource",
 		"onCommand:markdown.showPreviewSecuritySelector",
+		"onCommand:markdown.render",
 		"onWebviewPanel:markdown.preview"
 	],
 	"contributes": {
@@ -325,4 +326,4 @@
 		"webpack": "^4.1.0",
 		"webpack-cli": "^2.0.10"
 	}
-}
\ No newline at end of file
+}
diff --git a/extensions/markdown-language-features/src/commands/index.ts b/extensions/markdown-language-features/src/commands/index.ts
index e8c9651ee0c..68aff7ffcf5 100644
--- a/extensions/markdown-language-features/src/commands/index.ts
+++ b/extensions/markdown-language-features/src/commands/index.ts
@@ -10,3 +10,4 @@ export { RefreshPreviewCommand } from './refreshPreview';
 export { ShowPreviewSecuritySelectorCommand } from './showPreviewSecuritySelector';
 export { MoveCursorToPositionCommand } from './moveCursorToPosition';
 export { ToggleLockCommand } from './toggleLock';
+export { RenderDocument } from './renderDocument';
diff --git a/extensions/markdown-language-features/src/commands/renderDocument.ts b/extensions/markdown-language-features/src/commands/renderDocument.ts
new file mode 100644
index 00000000000..f041c1c4adf
--- /dev/null
+++ b/extensions/markdown-language-features/src/commands/renderDocument.ts
@@ -0,0 +1,30 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+
+import { Command } from '../commandManager';
+import { MarkdownEngine } from '../markdownEngine';
+import { SkinnyTextDocument } from '../tableOfContentsProvider';
+
+export class RenderDocument implements Command {
+	public readonly id = 'markdown.render';
+
+	public constructor(
+		private readonly engine: MarkdownEngine
+	) { }
+
+	public async execute(document?: SkinnyTextDocument): Promise<string | undefined> {
+		if (!document) {
+			if (!vscode.window.activeTextEditor) {
+				return;
+			}
+
+			document = vscode.window.activeTextEditor.document;
+		}
+
+		return this.engine.render(document);
+	}
+}
diff --git a/extensions/markdown-language-features/src/extension.ts b/extensions/markdown-language-features/src/extension.ts
index 3fe2c9d4cd3..44e8873b16d 100644
--- a/extensions/markdown-language-features/src/extension.ts
+++ b/extensions/markdown-language-features/src/extension.ts
@@ -83,6 +83,7 @@ function registerMarkdownCommands(
 	commandManager.register(new commands.ShowPreviewSecuritySelectorCommand(previewSecuritySelector, previewManager));
 	commandManager.register(new commands.OpenDocumentLinkCommand(engine));
 	commandManager.register(new commands.ToggleLockCommand(previewManager));
+	commandManager.register(new commands.RenderDocument(engine));
 	return commandManager;
 }