nextcloud/apps/theming/lib/ThemingDefaults.php

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<?php
/**
* @copyright Copyright (c) 2016 Bjoern Schiessle <bjoern@schiessle.org>
* @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Theming;
use OCP\Files\IAppData;
use OCP\ICacheFactory;
use OCP\IConfig;
use OCP\IL10N;
use OCP\IURLGenerator;
class ThemingDefaults extends \OC_Defaults {
/** @var IConfig */
private $config;
/** @var IL10N */
private $l;
/** @var IURLGenerator */
private $urlGenerator;
/** @var IAppData */
private $appData;
/** @var ICacheFactory */
private $cacheFactory;
/** @var string */
private $name;
/** @var string */
private $url;
/** @var string */
private $slogan;
/** @var string */
private $color;
/** @var Util */
private $util;
/**
* ThemingDefaults constructor.
*
* @param IConfig $config
* @param IL10N $l
* @param IURLGenerator $urlGenerator
* @param \OC_Defaults $defaults
* @param IAppData $appData
* @param ICacheFactory $cacheFactory
* @param Util $util
*/
public function __construct(IConfig $config,
IL10N $l,
IURLGenerator $urlGenerator,
IAppData $appData,
ICacheFactory $cacheFactory,
Util $util
) {
parent::__construct();
$this->config = $config;
$this->l = $l;
$this->urlGenerator = $urlGenerator;
$this->appData = $appData;
$this->cacheFactory = $cacheFactory;
$this->util = $util;
$this->name = parent::getName();
$this->url = parent::getBaseUrl();
$this->slogan = parent::getSlogan();
$this->color = parent::getColorPrimary();
}
public function getName() {
return strip_tags($this->config->getAppValue('theming', 'name', $this->name));
}
public function getHTMLName() {
return $this->config->getAppValue('theming', 'name', $this->name);
}
public function getTitle() {
return $this->getName();
}
public function getEntity() {
return $this->getName();
}
public function getBaseUrl() {
return $this->config->getAppValue('theming', 'url', $this->url);
}
public function getSlogan() {
return \OCP\Util::sanitizeHTML($this->config->getAppValue('theming', 'slogan', $this->slogan));
}
public function getShortFooter() {
$slogan = $this->getSlogan();
$footer = '<a href="'. $this->getBaseUrl() . '" target="_blank"' .
' rel="noreferrer">' .$this->getEntity() . '</a>'.
($slogan !== '' ? ' ' . $slogan : '');
return $footer;
}
/**
* Color that is used for the header as well as for mail headers
*
* @return string
*/
public function getColorPrimary() {
return $this->config->getAppValue('theming', 'color', $this->color);
}
/**
* Themed logo url
*
* @param bool $useSvg Whether to point to the SVG image or a fallback
* @return string
*/
public function getLogo($useSvg = true) {
$logo = $this->config->getAppValue('theming', 'logoMime', false);
$logoExists = true;
try {
$this->appData->getFolder('images')->getFile('logo');
} catch (\Exception $e) {
$logoExists = false;
}
$cacheBusterCounter = $this->config->getAppValue('theming', 'cachebuster', '0');
if(!$logo || !$logoExists) {
if($useSvg) {
$logo = $this->urlGenerator->imagePath('core', 'logo.svg');
} else {
$logo = $this->urlGenerator->imagePath('core', 'logo.png');
}
return $logo . '?v=' . $cacheBusterCounter;
}
return $this->urlGenerator->linkToRoute('theming.Theming.getLogo') . '?v=' . $cacheBusterCounter;
}
/**
* Themed background image url
*
* @return string
*/
public function getBackground() {
$backgroundLogo = $this->config->getAppValue('theming', 'backgroundMime',false);
$backgroundExists = true;
try {
$this->appData->getFolder('images')->getFile('background');
} catch (\Exception $e) {
$backgroundExists = false;
}
$cacheBusterCounter = $this->config->getAppValue('theming', 'cachebuster', '0');
if(!$backgroundLogo || !$backgroundExists) {
return $this->urlGenerator->imagePath('core','background.jpg') . '?v=' . $cacheBusterCounter;
}
return $this->urlGenerator->linkToRoute('theming.Theming.getLoginBackground') . '?v=' . $cacheBusterCounter;
}
/**
* @return array scss variables to overwrite
*/
public function getScssVariables() {
$cache = $this->cacheFactory->create('theming');
if ($value = $cache->get('getScssVariables')) {
return $value;
}
$variables = [
'theming-cachebuster' => "'" . $this->config->getAppValue('theming', 'cachebuster', '0') . "'",
];
$variables['image-logo'] = "'".$this->urlGenerator->getAbsoluteURL($this->getLogo())."'";
$variables['image-login-background'] = "'".$this->urlGenerator->getAbsoluteURL($this->getBackground())."'";
$variables['image-login-plain'] = 'false';
if ($this->config->getAppValue('theming', 'color', null) !== null) {
if ($this->util->invertTextColor($this->getColorPrimary())) {
$colorPrimaryText = '#000000';
} else {
$colorPrimaryText = '#ffffff';
}
$variables['color-primary'] = $this->getColorPrimary();
$variables['color-primary-text'] = $colorPrimaryText;
}
if ($this->config->getAppValue('theming', 'backgroundMime', null) === 'backgroundColor') {
$variables['image-login-plain'] = 'true';
}
$cache->set('getScssVariables', $variables);
return $variables;
}
/**
* Check if Imagemagick is enabled and if SVG is supported
* otherwise we can't render custom icons
*
* @return bool
*/
public function shouldReplaceIcons() {
$cache = $this->cacheFactory->create('theming');
if($value = $cache->get('shouldReplaceIcons')) {
return (bool)$value;
}
$value = false;
if(extension_loaded('imagick')) {
$checkImagick = new \Imagick();
if (count($checkImagick->queryFormats('SVG')) >= 1) {
$value = true;
}
$checkImagick->clear();
}
$cache->set('shouldReplaceIcons', $value);
return $value;
}
/**
* Increases the cache buster key
*/
private function increaseCacheBuster() {
$cacheBusterKey = $this->config->getAppValue('theming', 'cachebuster', '0');
$this->config->setAppValue('theming', 'cachebuster', (int)$cacheBusterKey+1);
$this->cacheFactory->create('theming')->clear('getScssVariables');
}
/**
* Update setting in the database
*
* @param string $setting
* @param string $value
*/
public function set($setting, $value) {
$this->config->setAppValue('theming', $setting, $value);
$this->increaseCacheBuster();
}
/**
* Revert settings to the default value
*
* @param string $setting setting which should be reverted
* @return string default value
*/
public function undo($setting) {
$this->config->deleteAppValue('theming', $setting);
$this->increaseCacheBuster();
switch ($setting) {
case 'name':
$returnValue = $this->getEntity();
break;
case 'url':
$returnValue = $this->getBaseUrl();
break;
case 'slogan':
$returnValue = $this->getSlogan();
break;
case 'color':
$returnValue = $this->getColorPrimary();
break;
default:
$returnValue = '';
break;
}
return $returnValue;
}
}