better-testing

DifferentialCodeWidthSensitiveView.php
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			<?php

			/*
			* Copyright 2012 Facebook, Inc.
			*
			* Licensed under the Apache License, Version 2.0 (the "License");
			* you may not use this file except in compliance with the License.
			* You may obtain a copy of the License at
			*
			* http://www.apache.org/licenses/LICENSE-2.0
			*
			* Unless required by applicable law or agreed to in writing, software
			* distributed under the License is distributed on an "AS IS" BASIS,
			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
			* See the License for the specific language governing permissions and
			* limitations under the License.
			*/

			abstract class DifferentialCodeWidthSensitiveView extends AphrontView {

			private $lineWidth = 80;

			private function setLineWidth($width) {
			$this->lineWidth = $width;
			return $this;
			}

			public function getLineWidth() {
			return $this->lineWidth;
			}

			public function setLineWidthFromChangesets(array $changesets) {
			assert_instances_of($changesets, 'DifferentialChangeset');
			if (empty($changesets)) {
			return $this;
			}

			$max = 1;
			foreach ($changesets as $changeset) {
			$max = max($max, $changeset->getWordWrapWidth());
			}
			$this->setLineWidth($max);

			return $this;
			}

			public function calculateSideBySideWidth() {
			// Width of the constant-width elements (like line numbers, padding,
			// and borders).
			$const = 148;
			$width = ceil(((1162 - $const) / 80) * $this->getLineWidth()) + $const;
			return max(1162, $width);
			}

			}