function advagg_mod_inline_defer

Defer inline js by using setTimeout.

Parameters

array $js: JS array.

bool $jquery_deferred: TRUE if jquery is deferred.

1 call to advagg_mod_inline_defer()

advagg_mod_js_post_alter in advagg_mod/advagg_mod.module

Alter the js array.

File

advagg_mod/advagg_mod.module, line 2628

Code

function advagg_mod_inline_defer(array &$js, $jquery_deferred) {
    if ($jquery_deferred) {
        $bootstrap_rev = strrev('/bootstrap.js');
        $bootstrap_min_rev = strrev('/bootstrap.min.js');
        foreach ($js as &$values) {
            // Defer bootstrap if jquery is deferred.
            if (is_string($values['data']) && (stripos(strrev($values['data']), $bootstrap_rev) === 0 || stripos(strrev($values['data']), $bootstrap_min_rev) === 0)) {
                $values['defer'] = TRUE;
                continue;
            }
            // Only do inline.
            if ($values['type'] === 'inline') {
                // Skip if advagg has already wrapped this inline code.
                if (strpos($values['data'], 'advagg_mod_') !== FALSE) {
                    continue;
                }
                if (!empty($values['no_defer'])) {
                    continue;
                }
                // Do not wrap inline js if it contains a named function definition.
                $pattern = '/\\s*function\\s+((?:[a-z][a-z0-9_]*))\\s*\\(.*\\)\\s*\\{/smix';
                $match = preg_match($pattern, $values['data']);
                if (!$match) {
                    // Defer inline scripts by wrapping the code in setTimeout callback.
                    $matches[2] = $matches[0] = $values['data'];
                    $values['data'] = advagg_mod_wrap_inline_js($matches);
                }
                elseif (stripos($values['data'], 'jQuery.') !== FALSE || stripos($values['data'], '(jQuery)') !== FALSE) {
                    // Inline js has a named function that uses jQuery;
                    // do not defer jQuery.js.
                    $no_jquery_defer = TRUE;
                }
            }
        }
        unset($values);
    }
    elseif (variable_get('advagg_mod_js_defer_inline_alter', ADVAGG_MOD_JS_DEFER_INLINE_ALTER)) {
        foreach ($js as &$values) {
            // Skip if not inline.
            if ($values['type'] !== 'inline') {
                continue;
            }
            // Skip if advagg has already wrapped this inline code.
            if (strpos($values['data'], 'advagg_mod_') !== FALSE) {
                continue;
            }
            if (!empty($values['no_defer'])) {
                continue;
            }
            // Do not wrap inline js if it contains a named function definition.
            $pattern = '/\\s*function\\s+((?:[a-z][a-z0-9_]*))\\s*\\(.*\\)\\s*\\{/smix';
            $match = preg_match($pattern, $values['data']);
            if (!$match) {
                // Defer the inline script by wrapping the code in setTimeout callback.
                $values['data'] = advagg_mod_defer_inline_js($values['data']);
            }
        }
        unset($values);
    }
    if (!empty($no_jquery_defer)) {
        $jquery_rev = strrev('/jquery.js');
        $jquery_min_rev = strrev('/jquery.min.js');
        foreach ($js as $name => &$values) {
            // Skip if not a file or external.
            if ($values['type'] !== 'file' && $values['type'] !== 'external') {
                continue;
            }
            // Special handling for jQuery.
            if (stripos(strrev($name), $jquery_rev) === 0 || stripos(strrev($name), $jquery_min_rev) === 0) {
                $values['defer'] = FALSE;
            }
        }
    }
}