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AphrontProgressBarView.php
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			<?php

			final class AphrontProgressBarView extends AphrontBarView {

			const WIDTH = 100;

			private $value;
			private $max = 100;
			private $alt = '';

			protected function getDefaultColor() {
			return parent::COLOR_AUTO_BADNESS;
			}

			public function setValue($value) {
			$this->value = $value;
			return $this;
			}

			public function setMax($max) {
			$this->max = $max;
			return $this;
			}

			public function setAlt($text) {
			$this->alt = $text;
			return $this;
			}

			protected function getRatio() {
			return min($this->value, $this->max) / $this->max;
			}

			public function render() {
			require_celerity_resource('aphront-bars');
			$ratio = $this->getRatio();
			$width = self::WIDTH * $ratio;

			$color = $this->getColor();

			return phutil_tag_div(
			"aphront-bar progress color-{$color}",
			array(
			phutil_tag(
			'div',
			array('title' => $this->alt),
			phutil_tag(
			'div',
			array('style' => "width: {$width}px;"),
			'')),
			phutil_tag(
			'span',
			array(),
			$this->getCaption()),
			));
			}

			}