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<?php
/**
* @file
* Definition of Drupal\breakpoint\Entity\Breakpoint.
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*/
namespace Drupal\breakpoint\Entity;
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use Drupal\Core\Config\Entity\ConfigEntityBase;
use Drupal\breakpoint\BreakpointInterface;
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use Drupal\breakpoint\InvalidBreakpointException;
use Drupal\breakpoint\InvalidBreakpointNameException;
use Drupal\breakpoint\InvalidBreakpointSourceException;
use Drupal\breakpoint\InvalidBreakpointSourceTypeException;
use Drupal\breakpoint\InvalidBreakpointMediaQueryException;
/**
* Defines the Breakpoint entity.
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*
* @EntityType(
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* id = "breakpoint",
* label = @Translation("Breakpoint"),
* controllers = {
* "storage" = "Drupal\Core\Config\Entity\ConfigStorageController"
* },
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* config_prefix = "breakpoint.breakpoint",
* entity_keys = {
* "id" = "id",
* "label" = "label",
* "uuid" = "uuid"
* }
* )
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*/
class Breakpoint extends ConfigEntityBase implements BreakpointInterface {
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/**
* Denotes that a breakpoint or breakpoint group is defined by a theme.
*/
const SOURCE_TYPE_THEME = 'theme';
/**
* Denotes that a breakpoint or breakpoint group is defined by a module.
*/
const SOURCE_TYPE_MODULE = 'module';
/**
* Denotes that a breakpoint or breakpoint group is defined by the user.
*/
const SOURCE_TYPE_USER_DEFINED = 'custom';
/**
* The breakpoint ID (config name).
*
* @var string
*/
public $id;
/**
* The breakpoint UUID.
*
* @var string
*/
public $uuid;
/**
* The breakpoint name (machine name) as specified by theme or module.
*
* @var string
*/
public $name;
/**
* The breakpoint label.
*
* @var string
*/
public $label;
/**
* The breakpoint media query.
*
* @var string
*/
public $mediaQuery = '';
/**
* The breakpoint source.
*
* @var string
*/
public $source = 'user';
/**
* The breakpoint source type.
*
* @var string
* Allowed values:
* Breakpoint::SOURCE_TYPE_THEME
* Breakpoint::SOURCE_TYPE_MODULE
* Breakpoint::SOURCE_TYPE_USER_DEFINED
*/
public $sourceType = Breakpoint::SOURCE_TYPE_USER_DEFINED;
/**
* The breakpoint weight.
*
* @var weight
*/
public $weight = 0;
/**
* The breakpoint multipliers.
*
* @var multipliers
*/
public $multipliers = array();
/**
* Overrides Drupal\config\ConfigEntityBase::save().
*/
public function save() {
// Check if everything is valid.
if (!$this->isValid()) {
throw new InvalidBreakpointException('Invalid data detected.');
}
// Build an id if none is set.
// Since a particular name can be used by multiple theme/modules we need
// to make a unique id.
if (empty($this->id)) {
$this->id = $this->sourceType . '.' . $this->source . '.' . $this->name;
}
// Set the label if none is set.
if (empty($this->label)) {
$this->label = $this->name;
}
// Remove unused multipliers.
$this->multipliers = array_filter($this->multipliers);
// Always add '1x' multiplier, use array_key_exists since the value might
// be NULL.
if (!array_key_exists('1x', $this->multipliers)) {
$this->multipliers = array('1x' => '1x') + $this->multipliers;
}
return parent::save();
}
/**
* {@inheritdoc}
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*/
public function isValid() {
// Check for illegal values in breakpoint source type.
if (!in_array($this->sourceType, array(
Breakpoint::SOURCE_TYPE_USER_DEFINED,
Breakpoint::SOURCE_TYPE_MODULE,
Breakpoint::SOURCE_TYPE_THEME)
)) {
throw new InvalidBreakpointSourceTypeException(format_string('Invalid source type @source_type', array(
'@source_type' => $this->sourceType,
)));
}
// Check for illegal characters in breakpoint source.
if (preg_match('/[^0-9a-z_]+/', $this->source)) {
throw new InvalidBreakpointSourceException(format_string("Invalid value '@source' for breakpoint source property. Breakpoint source property can only contain lowercase alphanumeric characters and underscores.", array('@source' => $this->source)));
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}
// Check for illegal characters in breakpoint names.
if (preg_match('/[^0-9a-z_\-]/', $this->name)) {
throw new InvalidBreakpointNameException(format_string("Invalid value '@name' for breakpoint name property. Breakpoint name property can only contain lowercase alphanumeric characters, underscores (_), and hyphens (-).", array('@name' => $this->name)));
}
return $this::isValidMediaQuery($this->mediaQuery);
}
/**
* {@inheritdoc}
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*/
public static function isValidMediaQuery($media_query) {
// Array describing all known media features and the expected value type or
// an array containing the allowed values.
$media_features = array(
'width' => 'length', 'min-width' => 'length', 'max-width' => 'length',
'height' => 'length', 'min-height' => 'length', 'max-height' => 'length',
'device-width' => 'length', 'min-device-width' => 'length', 'max-device-width' => 'length',
'device-height' => 'length', 'min-device-height' => 'length', 'max-device-height' => 'length',
'orientation' => array('portrait', 'landscape'),
'aspect-ratio' => 'ratio', 'min-aspect-ratio' => 'ratio', 'max-aspect-ratio' => 'ratio',
'device-aspect-ratio' => 'ratio', 'min-device-aspect-ratio' => 'ratio', 'max-device-aspect-ratio' => 'ratio',
'color' => 'integer', 'min-color' => 'integer', 'max-color' => 'integer',
'color-index' => 'integer', 'min-color-index' => 'integer', 'max-color-index' => 'integer',
'monochrome' => 'integer', 'min-monochrome' => 'integer', 'max-monochrome' => 'integer',
'resolution' => 'resolution', 'min-resolution' => 'resolution', 'max-resolution' => 'resolution',
'scan' => array('progressive', 'interlace'),
'grid' => 'integer',
);
if ($media_query) {
// Strip new lines and trim.
$media_query = str_replace(array("\r", "\n"), ' ', trim($media_query));
// Remove comments /* ... */.
$media_query = preg_replace('/\/\*[\s\S]*?\*\//', '', $media_query);
// Check media list.
$parts = explode(',', $media_query);
foreach ($parts as $part) {
// Split on ' and '
$query_parts = explode(' and ', trim($part));
$media_type_found = FALSE;
foreach ($query_parts as $query_part) {
$matches = array();
// Try to match: '(media_feature: value)' and variants.
if (preg_match('/^\(([\w\-]+)(:\s?([\w\-\.]+))?\)/', trim($query_part), $matches)) {
// Single expression like '(color)'.
if (isset($matches[1]) && !isset($matches[2])) {
if (!array_key_exists($matches[1], $media_features)) {
throw new InvalidBreakpointMediaQueryException('Invalid media feature detected.');
}
}
// Full expression like '(min-width: 20em)'.
elseif (isset($matches[3]) && !isset($matches[4])) {
$value = trim($matches[3]);
if (!array_key_exists($matches[1], $media_features)) {
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// We need to allow vendor prefixed media features and make sure
// we are future proof, so only check allowed characters.
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if (!preg_match('/^[a-zA-Z0-9\:\-\\ ]+$/i', trim($matches[1]))) {
throw new InvalidBreakpointMediaQueryException('Invalid media query detected.');
}
}
elseif (is_array($media_features[$matches[1]])) {
// Check if value is allowed.
if (!array_key_exists($value, $media_features[$matches[1]])) {
throw new InvalidBreakpointMediaQueryException('Value is not allowed.');
}
}
elseif (isset ($media_features[$matches[1]])) {
switch ($media_features[$matches[1]]) {
case 'length':
$length_matches = array();
// Check for a valid number and an allowed unit.
if (preg_match('/^(\-)?(\d+(?:\.\d+)?)?((?:|em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|dpi|dpcm))$/i', trim($value), $length_matches)) {
// Only -0 is allowed.
if ($length_matches[1] === '-' && $length_matches[2] !== '0') {
throw new InvalidBreakpointMediaQueryException('Invalid length detected.');
}
// If there's a unit, a number is needed as well.
if ($length_matches[2] === '' && $length_matches[3] !== '') {
throw new InvalidBreakpointMediaQueryException('Unit found, value is missing.');
}
}
else {
throw new InvalidBreakpointMediaQueryException('Invalid unit detected.');
}
break;
}
}
}
}
// Check for screen, only screen, not screen and variants.
elseif (preg_match('/^((?:only|not)?\s?)([\w\-]+)$/i', trim($query_part), $matches)) {
if ($media_type_found) {
throw new InvalidBreakpointMediaQueryException('Only one media type is allowed.');
}
$media_type_found = TRUE;
}
// Check for (scan), (only scan), (not scan) and variants.
elseif (preg_match('/^((?:only|not)\s?)\(([\w\-]+)\)$/i', trim($query_part), $matches)) {
throw new InvalidBreakpointMediaQueryException('Invalid media query detected.');
}
else {
// We need to allow vendor prefixed media fetures and make sure we
// are future proof, so only check allowed characters.
if (!preg_match('/^[a-zA-Z0-9\-\\ ]+$/i', trim($query_part), $matches)) {
throw new InvalidBreakpointMediaQueryException('Invalid media query detected.');
}
}
}
}
return TRUE;
}
throw new InvalidBreakpointMediaQueryException('Media query is empty.');
}
}