protected function render()
{
$this->presets = [];
/** @var Metadata $where */
foreach ($this->props->where as $where) {
$whereSubtags = $where->getChildren();
if (!$whereSubtags) {
continue;
}
$where->databind();
$rule = $where->props->match;
if (!$rule) {
continue;
}
$preset = new Preset($rule);
$append = [];
$prepend = [];
$replace = [];
$unset = [];
foreach ($whereSubtags as $subTag) {
switch ($subTag->getTagName()) {
case 'Set':
$subTag->databind();
$newProps = $subTag->props->getAll();
$preset->props = isset($preset->props) ? array_merge($preset->props, $newProps) : $newProps;
break;
case 'Unset':
if (isset($preset->props)) {
$subTag->databind();
$newProps = array_keys($subTag->props->getAll());
array_mergeInto($unset, $newProps);
}
break;
case 'Prepend':
array_mergeInto($prepend, $subTag->getChildren());
break;
case 'Append':
array_mergeInto($append, $subTag->getChildren());
break;
default:
//overwrite
$replace[] = $subTag;
}
}
$preset->prepend = $prepend;
$preset->append = $append;
$preset->content = $replace;
$preset->unset = $unset;
$this->presets[] = $preset;
}
$stack = $this->context->presets;
// Save a copy of the current presets stack.
$this->context->presets[] = $this;
$this->runChildren();
$this->context->presets = $stack;
// Note: it is not safe to just do an array_pop() here.
}
/**
* @param string[] $classes List of class names providing component presets.
* @return $this
*/
function registerPresets(array $classes)
{
array_mergeInto($this->presets, $classes);
return $this;
}
/**
* @param Component[]|null $children
*/
public function addChildren(array $children = null)
{
if ($children) {
array_mergeInto($this->children, $children);
$this->attach($children);
}
}
function endAssetsContext()
{
$from = $this->assets;
$to = $this->mainAssets;
if ($from->prepend) {
$to->inlineCssStyles = array_merge($from->inlineCssStyles, $to->inlineCssStyles);
$to->inlineScripts = array_merge($from->inlineScripts, $to->inlineScripts);
$unique = array_diff($from->scripts, $to->scripts);
$to->scripts = array_merge($unique, $to->scripts);
$unique = array_diff($from->stylesheets, $to->stylesheets);
$to->stylesheets = array_merge($unique, $to->stylesheets);
} else {
array_mergeInto($to->inlineCssStyles, $from->inlineCssStyles);
array_mergeInto($to->inlineScripts, $from->inlineScripts);
$unique = array_diff($from->scripts, $to->scripts);
array_mergeInto($to->scripts, $unique);
$unique = array_diff($from->stylesheets, $to->stylesheets);
array_mergeInto($to->stylesheets, $unique);
}
$this->assets = $to;
}
/**
* Merges another array or instance of this class with this one.
*
* @param array|PowerArray $v
*/
function merge($v)
{
if (is_array($v)) {
array_mergeInto($this->A, $v);
} else {
if ($v instanceof static) {
array_mergeInto($this->A, $v->A);
} else {
throw new InvalidArgumentException();
}
}
}
