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DifferentialPrimaryPaneView.php
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Wed, Jul 3, 22:20

DifferentialPrimaryPaneView.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.
*/
final class DifferentialPrimaryPaneView extends AphrontView {
private $lineWidth = 80;
private $id;
public function setLineWidth($width) {
$this->lineWidth = $width;
return $this;
}
public function setID($id) {
$this->id = $id;
return $this;
}
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 render() {
// This is chosen somewhat arbitrarily so the math works out correctly
// for 80 columns and sets it to the preexisting width (1162px). It may
// need some tweaking, but when lineWidth = 80, the computed pixel width
// should be 1162px or something along those lines.
// Width of the constant-width elements (like line numbers, padding,
// and borders).
$const = 148;
$width = ceil(((1162 - $const) / 80) * $this->lineWidth) + $const;
$width = max(1162, $width);
// Override the 'td' width rule with a more specific, inline style tag.
// TODO: move this to <head> somehow.
$td_width = ceil((88 / 80) * $this->lineWidth);
$style_tag = phutil_render_tag(
'style',
array(
'type' => 'text/css',
),
".differential-diff td { width: {$td_width}ex; }");
return phutil_render_tag(
'div',
array(
'class' => 'differential-primary-pane',
'style' => "max-width: {$width}px",
'id' => $this->id,
),
$style_tag.$this->renderChildren());
}
}

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