advagg_js_cdn.module

<?php


/**
 * @file
 * Advanced aggregation js cdn module.
 */

/**
 * @addtogroup default_variables
 * @{
 */

/**
 * Default value to see if jquery should be grabbed from the Google CDN.
 */
define('ADVAGG_JS_CDN_JQUERY', TRUE);

/**
 * Default value to see if jquery-ui should be grabbed from the Google CDN.
 */
define('ADVAGG_JS_CDN_JQUERY_UI', TRUE);

/**
 * Default jquery version.
 */
define('ADVAGG_JS_CDN_JQUERY_VERSION', '1.4.4');

/**
 * Default jquery ui version.
 */
define('ADVAGG_JS_CDN_JQUERY_UI_VERSION', '1.8.7');

/**
 * Default minification.
 */
define('ADVAGG_JS_CDN_COMPRESSION', TRUE);

/**
 * @} End of "addtogroup default_variables".
 */

/**
 * @addtogroup hooks
 * @{
 */

/**
 * Implements hook_js_alter().
 */
function advagg_js_cdn_js_alter(&$javascript) {
    // Only modify if jquery_update is not enabled.
    if (module_exists('jquery_update')) {
        return;
    }
    // Setup variables.
    // JQuery.
    $jquery_version = variable_get('advagg_js_cdn_jquery_version', ADVAGG_JS_CDN_JQUERY_VERSION);
    $min = variable_get('advagg_js_cdn_compression', ADVAGG_JS_CDN_COMPRESSION) ? '.min' : '';
    if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
        $min = '';
    }
    // JQuery ui.
    $jquery_ui_version = variable_get('advagg_js_cdn_jquery_ui_version', ADVAGG_JS_CDN_JQUERY_UI_VERSION);
    $ui_mapping = advagg_js_cdn_get_ui_mapping();
    $add_in_ui = FALSE;
    foreach ($javascript as $name => $values) {
        // Only modify if
        // advagg_js_cdn_jquery is enabled,
        // name is misc/jquery.js,
        // and type is file.
        if (variable_get('advagg_js_cdn_jquery', ADVAGG_JS_CDN_JQUERY) && $name === 'misc/jquery.js' && $javascript[$name]['type'] === 'file') {
            // Add in backup.
            $values['weight'] += 1.0E-5;
            $values['data'] = 'window.jQuery || document.write("<script src=\'' . base_path() . $values['data'] . '\'>\\x3C/script>")';
            $values['type'] = 'inline';
            $javascript[$name . 'backup.js'] = $values;
            // Change core to external.
            $javascript[$name]['data'] = '//ajax.googleapis.com/ajax/libs/jquery/' . $jquery_version . '/jquery' . $min . '.js';
            $javascript[$name]['type'] = 'external';
        }
        // Only modify if
        // advagg_js_cdn_jquery_ui is enabled,
        // name is in the $ui_mapping array.
        // and type is file.
        if (variable_get('advagg_js_cdn_jquery_ui', ADVAGG_JS_CDN_JQUERY_UI) && array_key_exists($name, $ui_mapping) && $javascript[$name]['type'] === 'file') {
            // We only need one file.
            if (!$add_in_ui) {
                // Add in backup.
                $values['weight'] += 1.0E-5;
                $values['data'] = 'window.jQuery.ui || document.write("<script src=\'' . base_path() . drupal_get_path('module', 'advagg_js_cdn') . '/js/jquery-ui.js' . '\'>\\x3C/script>")';
                $values['type'] = 'inline';
                $javascript[$name . 'backup.js'] = $values;
                // Change core to external.
                $add_in_ui = TRUE;
                $javascript[$name]['data'] = '//ajax.googleapis.com/ajax/libs/jqueryui/' . $jquery_ui_version . '/jquery-ui' . $min . '.js';
                $javascript[$name]['type'] = 'external';
            }
            else {
                unset($javascript[$name]);
            }
        }
    }
}

/**
 * @} End of "addtogroup hooks".
 */

/**
 * Return an array of jquery ui files.
 *
 * @return array
 *   array of jQuery UI file locations.
 */
function advagg_js_cdn_get_ui_mapping() {
    // Replace jQuery UI's JavaScript, beginning by defining the mapping.
    $ui_mapping = array(
        'misc/ui/jquery.effects.blind.min.js' => 'effects.blind',
        'misc/ui/jquery.effects.bounce.min.js' => 'effects.bounce',
        'misc/ui/jquery.effects.clip.min.js' => 'effects.clip',
        'misc/ui/jquery.effects.core.min.js' => 'effects.core',
        'misc/ui/jquery.effects.drop.min.js' => 'effects.drop',
        'misc/ui/jquery.effects.explode.min.js' => 'effects.explode',
        'misc/ui/jquery.effects.fade.min.js' => 'effects.fade',
        'misc/ui/jquery.effects.fold.min.js' => 'effects.fold',
        'misc/ui/jquery.effects.highlight.min.js' => 'effects.highlight',
        'misc/ui/jquery.effects.pulsate.min.js' => 'effects.pulsate',
        'misc/ui/jquery.effects.scale.min.js' => 'effects.scale',
        'misc/ui/jquery.effects.shake.min.js' => 'effects.shake',
        'misc/ui/jquery.effects.slide.min.js' => 'effects.slide',
        'misc/ui/jquery.effects.transfer.min.js' => 'effects.transfer',
        'misc/ui/jquery.ui.accordion.min.js' => 'ui.accordion',
        'misc/ui/jquery.ui.autocomplete.min.js' => 'ui.autocomplete',
        'misc/ui/jquery.ui.button.min.js' => 'ui.button',
        'misc/ui/jquery.ui.core.min.js' => 'ui.core',
        'misc/ui/jquery.ui.datepicker.min.js' => 'ui.datepicker',
        'misc/ui/jquery.ui.dialog.min.js' => 'ui.dialog',
        'misc/ui/jquery.ui.draggable.min.js' => 'ui.draggable',
        'misc/ui/jquery.ui.droppable.min.js' => 'ui.droppable',
        'misc/ui/jquery.ui.mouse.min.js' => 'ui.mouse',
        'misc/ui/jquery.ui.position.min.js' => 'ui.position',
        'misc/ui/jquery.ui.progressbar.min.js' => 'ui.progressbar',
        'misc/ui/jquery.ui.resizable.min.js' => 'ui.resizable',
        'misc/ui/jquery.ui.selectable.min.js' => 'ui.selectable',
        'misc/ui/jquery.ui.slider.min.js' => 'ui.slider',
        'misc/ui/jquery.ui.sortable.min.js' => 'ui.sortable',
        'misc/ui/jquery.ui.tabs.min.js' => 'ui.tabs',
        'misc/ui/jquery.ui.widget.min.js' => 'ui.widget',
    );
    return $ui_mapping;
}