/**
* Generates the HTML for the represented <source> or <img> element.
*
* @param SrcsetGeneratorInterface $srcset_gen
* The generator instance that will be used to generate the srcset
* attributes.
* @param mixed $image
* The image representation that will be passed to $srcset_gen
* @param string $alt
* The for an <img> `alt` attribute. Only used if $this->as_img is true.
*
* @return string
* The HTML for either a <source> or <img> element depending on the value
*
* @see SrcsetGeneratorInterface
*/
public function renderWith(SrcsetGeneratorInterface $srcset_gen, $image, $alt = '')
{
$last = F\last($this->sizes);
$srcset = F\map($this->sizes, function (Size $size) use($image, $srcset_gen) {
return $srcset_gen->listFor($image, $size);
});
$srcset = F\unique(F\flatten($srcset), function (Src $src) {
return $src->getUrl();
});
# Not really needed, but makes debugging nicer.
usort($srcset, function (Src $l, Src $r) {
$l = $l->getWidth() ?: (int) $l->getMultiplier();
$r = $r->getWidth() ?: (int) $r->getMultiplier();
return $l - $r;
});
$srcset = implode(', ', $srcset);
$sizes = F\map($this->sizes, function (Size $size) use($last) {
return $size === $last ? $size->renderWidthOnly() : (string) $size;
});
$sizes = implode(', ', $sizes);
$media = !$this->as_img ? ' media="' . $last->getMediaQuery() . '"' : '';
$alt = $this->as_img ? ' alt="' . htmlspecialchars($alt) . '"' : '';
$attributes = "srcset=\"{$srcset}\" sizes=\"{$sizes}\"{$media}{$alt}";
return $this->as_img ? "<img {$attributes}>" : "<source {$attributes}>";
}
public function setUp()
{
$this->functions = F\flatten((array) (func_num_args() > 0 ? func_get_arg(0) : $this->getFunctionName()));
foreach ($this->functions as $function) {
if (!function_exists($function)) {
$this->markTestSkipped(sprintf('Function "%s()" not implemented in %s version', $function, extension_loaded('functional') ? 'native C' : 'PHP userland'));
break;
}
}
}
function setUp()
{
$this->functions = F\flatten(func_num_args() > 0 ? func_get_arg(0) : array(ucfirst(strtolower(str_replace('Test', '', get_class($this))))));
foreach ($this->functions as $function) {
if (!function_exists($function)) {
$this->markTestSkipped(sprintf('Function "%s()" not implemented in %s version', $function, extension_loaded('functional') ? 'native C' : 'PHP userland'));
break;
}
}
}
/**
* Flatten Types, e.g. flatten UnionTypes.
*
* This function won't have much of an effect on most types, unless they contain subtypes.
*
* Because this function preserves duplicate entries, usually it may be preferable to use Type::unique()
* which also flattens and removes duplicate entries.
*
* @param Type|Type[] ...$types Use array dereferencing to pass an array into this function.
*
* @return array
*/
public static function flatten(Type ...$types)
{
// Flatten types with subtypes e.g. UnionTypes
$walker = function (Type $x) {
// If the types $x contains is not just itself, go deeper!
if (count($x->getTypes()) !== 1 or !first($x->getTypes())->typeof($x)) {
return Type::flatten($x);
}
return $x->getTypes();
};
$x = array_map($walker, $types);
return array_flatten($x);
}
public function testPassNoCollection()
{
$this->expectArgumentError('Functional\\flatten() expects parameter 1 to be array or instance of Traversable');
flatten('invalidCollection');
}
