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PHUISegmentBarSegmentView.php
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			<?php

			final class PHUISegmentBarSegmentView extends AphrontTagView {

			private $width;
			private $color;
			private $position;
			private $tooltip;

			public function setWidth($width) {
			$this->width = $width;
			return $this;
			}

			public function getWidth() {
			return $this->width;
			}

			public function setColor($color) {
			$this->color = $color;
			return $this;
			}

			public function setPosition($position) {
			$this->position = $position;
			return $this;
			}

			/**
			* Set a Tooltip.
			* @param string\|null $tooltip
			* @return self
			*/
			public function setTooltip($tooltip) {
			$this->tooltip = $tooltip;
			return $this;
			}

			protected function canAppendChild() {
			return false;
			}

			protected function getTagAttributes() {
			$classes = array(
			'phui-segment-bar-segment-view',
			);

			if ($this->color) {
			$classes[] = $this->color;
			}

			// Convert width to a percentage, and round it up slightly so that bars
			// are full if they have, e.g., three segments at 1/3 + 1/3 + 1/3.
			$width = 100 * $this->width;
			$width = ceil(100 * $width) / 100;
			$width = sprintf('%.2f%%', $width);

			$left = 100 * $this->position;
			$left = floor(100 * $left) / 100;
			$left = sprintf('%.2f%%', $left);

			$tooltip = $this->tooltip;
			if (phutil_nonempty_string($tooltip)) {
			Javelin::initBehavior('phabricator-tooltips');

			$sigil = 'has-tooltip';
			$meta = array(
			'tip' => $tooltip,
			'align' => 'E',
			);
			} else {
			$sigil = null;
			$meta = null;
			}

			return array(
			'class' => implode(' ', $classes),
			'style' => "left: {$left}; width: {$width};",
			'sigil' => $sigil,
			'meta' => $meta,
			);
			}

			}