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	diff --git a/src/view/layout/AphrontSideNavFilterView.php b/src/view/layout/AphrontSideNavFilterView.php
	index 17e2c8a868..d4e6accdc9 100644
	--- a/src/view/layout/AphrontSideNavFilterView.php
	+++ b/src/view/layout/AphrontSideNavFilterView.php
	@@ -1,265 +1,268 @@
	<?php

	/**
	* Like an @{class:AphrontSideNavView}, but with a little bit of logic for the
	* common case where you're using the side nav to filter some view of objects.
	*
	* For example:
	*
	* $nav = new AphrontSideNavFilterView();
	* $nav
	* ->setBaseURI($some_uri)
	* ->addLabel('Cats')
	* ->addFilter('meow', 'Meow')
	* ->addFilter('purr', 'Purr')
	* ->addSpacer()
	* ->addLabel('Dogs')
	* ->addFilter('woof', 'Woof')
	* ->addFilter('bark', 'Bark');
	* $valid_filter = $nav->selectFilter($user_selection, $default = 'meow');
	*
	*/
	final class AphrontSideNavFilterView extends AphrontView {

	private $items = array();
	private $baseURI;
	private $selectedFilter = false;
	private $flexNav;
	private $flexible;
	private $user;
	private $active;
	private $menu;
	private $crumbs;

	public function __construct() {
	$this->menu = new PhabricatorMenuView();
	}

	public function setCrumbs(PhabricatorCrumbsView $crumbs) {
	$this->crumbs = $crumbs;
	return $this;
	}

	public function getCrumbs() {
	return $this->crumbs;
	}

	public function setActive($active) {
	$this->active = $active;
	return $this;
	}

	public function setUser(PhabricatorUser $user) {
	$this->user = $user;
	return $this;
	}

	public function setFlexNav($flex_nav) {
	$this->flexNav = $flex_nav;
	return $this;
	}

	public function setFlexible($flexible) {
	$this->flexible = $flexible;
	return $this;
	}

	public function getMenuView() {
	return $this->menu;
	}

	public function addMenuItem(PhabricatorMenuItemView $item) {
	$this->menu->addMenuItem($item);
	return $this;
	}

	public function getMenu() {
	return $this->menu;
	}

	public function addFilter(
	$key,
	$name,
	$uri = null) {

	$item = id(new PhabricatorMenuItemView())
	- ->setKey(strlen($key) ? $key : null)
	->setName($name);

	+ if (strlen($key)) {
	+ $item->setKey($key);
	+ }
	+
	if ($uri) {
	$item->setHref($uri);
	} else {
	$href = clone $this->baseURI;
	$href->setPath(rtrim($href->getPath().$key, '/').'/');
	$href = (string)$href;

	$item->setHref($href);
	}

	return $this->addMenuItem($item);
	}

	public function addCustomBlock($block) {
	$this->menu->appendChild($block);
	return $this;
	}

	public function addLabel($name) {
	return $this->addMenuItem(
	id(new PhabricatorMenuItemView())
	->setType(PhabricatorMenuItemView::TYPE_LABEL)
	->setName($name));
	}

	public function addSpacer() {
	return $this->addMenuItem(
	id(new PhabricatorMenuItemView())
	->setType(PhabricatorMenuItemView::TYPE_SPACER));
	}

	public function setBaseURI(PhutilURI $uri) {
	$this->baseURI = $uri;
	return $this;
	}

	public function getBaseURI() {
	return $this->baseURI;
	}

	public function selectFilter($key, $default = null) {
	$this->selectedFilter = $default;
	if ($this->menu->getItem($key)) {
	$this->selectedFilter = $key;
	}
	return $this->selectedFilter;
	}

	public function getSelectedFilter() {
	return $this->selectedFilter;
	}

	public function render() {
	if ($this->menu->getItems()) {
	if (!$this->baseURI) {
	throw new Exception("Call setBaseURI() before render()!");
	}
	if ($this->selectedFilter === false) {
	throw new Exception("Call selectFilter() before render()!");
	}
	}

	$selected_item = $this->menu->getItem($this->selectedFilter);
	if ($selected_item) {
	$selected_item->addClass('phabricator-menu-item-selected');
	}

	require_celerity_resource('phabricator-side-menu-view-css');

	if ($this->flexNav) {
	return $this->renderFlexNav();
	} else {
	return $this->renderLegacyNav();
	}
	}

	private function renderFlexNav() {

	$user = $this->user;

	require_celerity_resource('phabricator-nav-view-css');

	$nav_classes = array();
	$nav_classes[] = 'phabricator-nav';

	$nav_id = null;
	$drag_id = null;
	$content_id = celerity_generate_unique_node_id();
	$local_id = null;
	$local_menu = null;
	$main_id = celerity_generate_unique_node_id();

	if ($this->flexible) {
	$drag_id = celerity_generate_unique_node_id();
	$flex_bar = phutil_render_tag(
	'div',
	array(
	'class' => 'phabricator-nav-drag',
	'id' => $drag_id,
	),
	'');
	} else {
	$flex_bar = null;
	}

	$nav_menu = null;
	if ($this->menu->getItems()) {
	$local_id = celerity_generate_unique_node_id();
	$nav_classes[] = 'has-local-nav';
	$local_menu = phutil_render_tag(
	'div',
	array(
	'class' => 'phabricator-nav-col phabricator-nav-local '.
	'phabricator-side-menu',
	'id' => $local_id,
	),
	self::renderSingleView($this->menu));
	}

	$crumbs = null;
	if ($this->crumbs) {
	$crumbs = $this->crumbs->render();
	$nav_classes[] = 'has-crumbs';
	}

	Javelin::initBehavior(
	'phabricator-nav',
	array(
	'mainID' => $main_id,
	'localID' => $local_id,
	'dragID' => $drag_id,
	'contentID' => $content_id,
	'menuSize' => ($crumbs ? 76 : 44),
	));

	if ($this->active && $local_id) {
	Javelin::initBehavior(
	'phabricator-active-nav',
	array(
	'localID' => $local_id,
	));
	}

	return $crumbs.phutil_render_tag(
	'div',
	array(
	'class' => implode(' ', $nav_classes),
	'id' => $main_id,
	),
	$local_menu.
	$flex_bar.
	phutil_render_tag(
	'div',
	array(
	'class' => 'phabricator-nav-content',
	'id' => $content_id,
	),
	$this->renderChildren()));
	}

	public function renderLegacyNav() {
	require_celerity_resource('aphront-side-nav-view-css');

	return
	'<table class="aphront-side-nav-view phabricator-side-menu">'.
	'<tr>'.
	'<th class="aphront-side-nav-navigation">'.
	self::renderSingleView($this->menu).
	'</th>'.
	'<td class="aphront-side-nav-content">'.
	$this->renderChildren().
	'</td>'.
	'</tr>'.
	'</table>';
	}

	}

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