Multi-root Workspace Support

[asergeant01]

Doesn't seem to behave as expected for multi-root workspaces

Select and run multiple tox environments doesn't do anything

[The-Compiler]

Some docs, as a note to myself:

• Multi-root Workspaces in Visual Studio Code
• Adopting Multi Root Workspace APIs · microsoft/vscode Wiki

We do however already use vscode.workspace.getWorkspaceFolder(docUri); (with that being based on the current document, vscode.window.activeTextEditor?.document.uri):

vscode-python-tox/src/extension.ts

Lines 9 to 26 in 6af7a69

	function findProjectDir() {
	const docUri = vscode.window.activeTextEditor?.document.uri;
	if (!docUri) {
	throw new Error("No active editor found.");
	}
	const workspace = vscode.workspace.getWorkspaceFolder(docUri);
	if (workspace) {
	const folder = workspace.uri.fsPath;
	console.log(`tox workspace folder: ${folder}`);
	return folder;
	}
	const docPath = docUri.fsPath;
	const docDir = path.dirname(docPath);
	console.log(`tox doc path: ${docPath} -> ${docDir}`);
	return docDir;
	}

Thus, I would expect this to work fine in theory. Haven't tried to reproduce yet, though - I'm afraid this project is on the back-burner a bit, as I'm busy with my main project (qutebrowser).

[The-Compiler]

FWIW, the task integration added in #12 does seem to support multi-root workspaces and collects all tox envs from all found tox.ini files.