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PhabricatorIconSet.php
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			<?php

			abstract class PhabricatorIconSet
			extends Phobject {

			abstract protected function newIcons();

			final public function getIconSetKey() {
			return $this->getPhobjectClassConstant('ICONSETKEY');
			}

			public function getChooseButtonText() {
			return pht('Choose Icon...');
			}

			public function getSelectIconTitleText() {
			return pht('Choose Icon');
			}

			public function getSelectURI() {
			$key = $this->getIconSetKey();
			return "/file/iconset/{$key}/select/";
			}

			final public function getIcons() {
			$icons = $this->newIcons();

			// TODO: Validate icons.
			$icons = mpull($icons, null, 'getKey');

			return $icons;
			}

			final public function getIcon($key) {
			$icons = $this->getIcons();
			return idx($icons, $key);
			}

			final public function getIconLabel($key) {
			$icon = $this->getIcon($key);

			if ($icon) {
			return $icon->getLabel();
			}

			return $key;
			}

			final public function renderIconForControl(PhabricatorIconSetIcon $icon) {
			return phutil_tag(
			'span',
			array(),
			array(
			id(new PHUIIconView())->setIcon($icon->getIcon()),
			' ',
			$icon->getLabel(),
			));
			}

			final public static function getIconSetByKey($key) {
			$sets = self::getAllIconSets();
			return idx($sets, $key);
			}

			final public static function getAllIconSets() {
			return id(new PhutilClassMapQuery())
			->setAncestorClass(__CLASS__)
			->setUniqueMethod('getIconSetKey')
			->execute();
			}

			}