"Copy Download Link" in file browser

[jasongrout]

Right now we have:

• open in new tab, which gets the download URL and opens a new tab with it
• copy sharable link, which gets a lab link and copies it to the clipboard

@johnkit pointed out that it would be nice to have a menu item that gets the download URL and copies it to the clipboard. Then you could get a link you could copy into a notebook, or a command line, etc., that would let you request a resource.

I think this would be an advanced "good first issue". I think you could piece together such a function by looking at the code for each of those menu items above:

open in new tab:

jupyterlab/packages/filebrowser-extension/src/index.ts

Lines 371 to 392 in 72a95c0

	commands.addCommand(CommandIDs.openBrowserTab, {
	execute: () => {
	const widget = tracker.currentWidget;
	if (!widget) {
	return;
	}
	return Promise.all(
	toArray(
	map(widget.selectedItems(), item => {
	return commands.execute('docmanager:open-browser-tab', {
	path: item.path
	});
	})
	)
	);
	},
	iconClass: 'jp-MaterialIcon jp-AddIcon',
	label: 'Open in New Browser Tab',
	mnemonic: 0
	});

which calls

jupyterlab/packages/docmanager-extension/src/index.ts

Lines 360 to 375 in 44f33c6

	commands.addCommand(CommandIDs.openBrowserTab, {
	execute: args => {
	const path =
	typeof args['path'] === 'undefined' ? '' : (args['path'] as string);
	if (!path) {
	return;
	}
	return docManager.services.contents.getDownloadUrl(path).then(url => {
	window.open(url, '_blank');
	});
	},
	icon: args => (args['icon'] as string) || '',
	label: () => 'Open in New Browser Tab'
	});

copy sharable link:

jupyterlab/packages/filebrowser-extension/src/index.ts

Lines 420 to 430 in 72a95c0

	commands.addCommand(CommandIDs.share, {
	execute: () => {
	const path = encodeURIComponent(browser.selectedItems().next().path);
	const tree = PageConfig.getTreeUrl({ workspace: true });
	Clipboard.copyToSystem(URLExt.join(tree, path));
	},
	isVisible: () => toArray(browser.selectedItems()).length === 1,
	iconClass: 'jp-MaterialIcon jp-LinkIcon',
	label: 'Copy Shareable Link'
	});

CC @ian-r-rose