export function getMultiSelectedResources(resource: URI | object, listService: IListService, editorService: IEditorService): URI[] {
	const list = listService.lastFocusedList;
	if (list && list.isDOMFocused()) {
		// Explorer
		if (list instanceof Tree) {
			const selection = list.getSelection().map((fs: ExplorerItem) => fs.resource);
			const focus = list.getFocus();
			const mainUriStr = URI.isUri(resource) ? resource.toString() : focus instanceof ExplorerItem ? focus.resource.toString() : undefined;
			// If the resource is passed it has to be a part of the returned context.
			// We only respect the selection if it contains the focused element.
			if (selection.some(s => URI.isUri(s) && s.toString() === mainUriStr)) {
				return selection;
			}
		}

		// Open editors view
		if (list instanceof List) {
			const selection = list.getSelectedElements().filter(s => s instanceof OpenEditor).map((oe: OpenEditor) => oe.getResource());
			const focusedElements = list.getFocusedElements();
			const focus = focusedElements.length ? focusedElements[0] : undefined;
			const mainUriStr = URI.isUri(resource) ? resource.toString() : (focus instanceof OpenEditor) ? focus.getResource().toString() : undefined;
			// We only respect the selection if it contains the main element.
			if (selection.some(s => s.toString() === mainUriStr)) {
				return selection;
			}
		}
	}

	const result = getResourceForCommand(resource, listService, editorService);
	return !!result ? [result] : [];
}

		p = toPromise(emitter.event).then(e => {
			assert.equal(e.length, 2);
			assert.ok(URI.isUri(e[0]));
			assert.ok(URI.isUri(e[1]));
			assert.equal(e[0].toString(), 'aa:bb');
			assert.equal(e[1].toString(), 'aa:cc');
		});

export function getMultiSelectedResources(resource: URI | {}, listService: IListService, editorService: IWorkbenchEditorService): URI[] {
	const list = listService.lastFocusedList;
	if (list && list.isDOMFocused()) {
		// Explorer
		if (list instanceof Tree) {
			const focus: IFileStat = list.getFocus();
			// If the resource is passed it has to be a part of the returned context.
			if (focus && (!URI.isUri(resource) || focus.resource.toString() === resource.toString())) {
				const selection = list.getSelection();
				// We only respect the selection if it contains the focused element.
				if (selection && selection.indexOf(focus) >= 0) {
					return selection.map(fs => fs.resource);
				}
			}
		}

		// Open editors view
		if (list instanceof List) {
			const focus = list.getFocusedElements();
			// If the resource is passed it has to be a part of the returned context.
			if (focus.length && (!URI.isUri(resource) || (focus[0] instanceof OpenEditor && focus[0].getResource().toString() === resource.toString()))) {
				const selection = list.getSelectedElements();
				// We only respect the selection if it contains the focused element.
				if (selection && selection.indexOf(focus[0]) >= 0) {
					return selection.filter(s => s instanceof OpenEditor).map((oe: OpenEditor) => oe.getResource());
				}
			}
		}
	}

	const result = getResourceForCommand(resource, listService, editorService);
	return !!result ? [result] : [];
}

export function getResourceForCommand(resource: URI | object, listService: IListService, editorService: IEditorService): URI {
	if (URI.isUri(resource)) {
		return resource;
	}

	let list = listService.lastFocusedList;
	if (list && list.isDOMFocused()) {
		let focus: any;
		if (list instanceof List) {
			const focused = list.getFocusedElements();
			if (focused.length) {
				focus = focused[0];
			}
		} else {
			focus = list.getFocus();
		}

		if (focus instanceof ExplorerItem) {
			return focus.resource;
		} else if (focus instanceof OpenEditor) {
			return focus.getResource();
		}
	}

	return toResource(editorService.activeEditor, { supportSideBySide: true });
}

export function getResourceForCommand(resource: URI | {}, listService: IListService, editorService: IWorkbenchEditorService): URI {
	if (URI.isUri(resource)) {
		return resource;
	}

	const list = listService.lastFocusedList;
	if (list && list.isDOMFocused()) {
		const focus = list.getFocus();
		if (focus instanceof FileStat) {
			return focus.resource;
		} else if (focus instanceof OpenEditor) {
			return focus.getResource();
		}
	}

	return toResource(editorService.getActiveEditorInput(), { supportSideBySide: true });
}

	id: OPEN_TO_SIDE_COMMAND_ID, handler: (accessor, resource: URI) => {
		const editorService = accessor.get(IWorkbenchEditorService);
		const listService = accessor.get(IListService);
		const tree = listService.lastFocusedList;
		resource = getResourceForCommand(resource, listService, editorService);

		// Remove highlight
		if (tree instanceof Tree) {
			tree.clearHighlight();
		}

		// Set side input
		if (URI.isUri(resource)) {
			return editorService.openEditor({ resource, options: { preserveFocus: false } }, true);
		}

		return TPromise.as(true);
	}

		function isTextChange(thing: [URI, types.TextEdit[]] | [URI, URI]): thing is [URI, types.TextEdit[]] {
			const [f, s] = thing;
			return URI.isUri(f) && Array.isArray(s);
		}

		function isFileChange(thing: [URI, types.TextEdit[]] | [URI, URI]): thing is [URI, URI] {
			const [f, s] = thing;
			return URI.isUri(f) && URI.isUri(s);
		}

		function isFileChange(thing: [URI, types.TextEdit[]] | [URI, URI, { overwrite?: boolean }]): thing is [URI, URI, { overwrite?: boolean }] {
			const [f, s] = thing;
			return URI.isUri(f) && URI.isUri(s);
		}