public static function adminInit() {

$tab = !empty($_GET['tab']) ? $_GET['tab'] : 'general';

wp_enqueue_style('cfao-admin-css',

admin_url('admin-ajax.php?action=cfao-admin-css'),

array(),

time()

);

$script_url = add_query_arg('tab', $tab, admin_url('admin-ajax.php?action=cfao-admin-js'));

wp_enqueue_script('cfao-admin-js',

$script_url,

array(),

time()

);

}

public static function adminCSS() {

header('Content-type: text/css');

?>

form#cf-asset-optimizer-settings fieldset {

padding: 5px;

border: thin solid #000;

}

form#cf-asset-optimizer-settings fieldset > ul > li {

padding: 5px;

margin: 5px auto;

border-top: thin solid #000;

}

form#cf-asset-optimizer-settings fieldset > ul > li:first-child {

border-top: none;

margin-top: 0px;

padding-top: 0px;

}

form#cf-asset-optimizer-settings div.tabs {

margin-top: 10px;

overflow: hidden;

}

form#cf-asset-optimizer-settings div.tabs ul {

overflow: hidden;

}

form#cf-asset-optimizer-settings div.tabs li {

float: left;

margin: 0px 5px;

}

form#cf-asset-optimizer-settings div.tabs li a {

font-size: 18px;

}

form#cf-asset-optimizer-settings div.tabs li.active-tab a {

color: #333;

font-weight: bold;

text-decoration: none;

cursor: default;

}

<?php

exit();

}

public static function adminJS() {

header('Content-type: application/javascript');

$tab = !empty($_REQUEST['tab']) ? $_REQUEST['tab'] : 'general';

?>

jQuery(document).ready(function($) {

var $tabsWrapper = $('<div></div>').addClass('tabs'),

$tabsList = $('<ul></ul>'),

$myLink,

tabs = {},

$form = $('form#cf-asset-optimizer-settings'),

numTabs = 0;

$form.find('div.tab').each(function() {

var $this = $(this),

myLabelText = $this.find('h2.tab-title').text();

tabs[myLabelText] = $this.attr('id');

$this.find('h2.tab-title').remove();

});

for (var key in tabs) {

if (tabs.hasOwnProperty(key)) {

numTabs ++;

}

}

$('.concat-file-list ul').after('<a href="#" class="remove-concat-file">Remove</a>');

$('a.remove-concat-file').click(function(event) {

event.stopPropagation();

event.preventDefault();

$(this).parent().remove();

});

if (numTabs > 1) {

for (var name in tabs) {

$tabsList.append('<li><a href="#'+tabs[name]+'">'+name+'</a></li>');

}

$tabsList.find('a').click(function(e) {

var $this = $(this);

e.preventDefault();

e.stopPropagation();

$this

.parents('ul')

.children()

.removeClass('active-tab')

.end()

.end()

.parent()

.addClass('active-tab')

.end()

.parents('form')

.find('div.tab')

.hide()

.end()

.end();

$($this.attr('href')).show();

});

$form.prepend($tabsWrapper);

$tabsWrapper.append($tabsList);

$selectedTab = $tabsList.find('a[href="#cf-asset-optimizer-settings-'+<?php echo json_encode($tab); ?>+'"]');

if ($selectedTab.length > 0) {

$selectedTab.click();

}

else {

$tabsList.find('li:first-child a').click();

}

}

});

<?php

exit();

}

public static function adminMenu() {

add_options_page(

__('CF Asset Optimizer'),

__('CF Asset Optimizer'),

'manage_options',

'cf-asset-optimizer-options',

'CFAssetOptimizerAdmin::adminMenuCallback'

);

}

public static function adminMenuCallback() {

?>

<?php screen_icon(); ?><h1><?php echo esc_html(__('CF Asset Optimizer')); ?></h1>

<p><?php echo esc_html(__('Here you can manage the settings for dynamically concatenating and serving your static files.')); ?><p>

<p><?php echo esc_html(__('Each file lists its handle, information about that file, and the reason it was disabled if such was required.')); ?></p>

<form method="post" action="" id="cf-asset-optimizer-settings">

<?php

wp_nonce_field('cfao-save-settings', 'cfao-save-settings');

self::_displayGeneralSettingsTab();

self::_displayFileListTab('scripts');

self::_displayFileListTab('styles');

?>

</form>

<?php

}

private static function _displayGeneralSettingsTab() {

$cfao_using_cache = get_option('cfao_using_cache', false);

$security_key = get_option('cfao_security_key', '');

$minify_js_level = get_option('cfao_minify_js_level', '');

?>

<div class="tab" id="cf-asset-optimizer-settings-general">

<h2 class="tab-title"><?php echo esc_html(__('General Settings')); ?></h2>

<fieldset id="cf-asset-optimizer-general-settings">

<legend><h3><?php echo esc_html(__('General Settings')); ?></h3></legend>

<ul>

<li>

<label for="chk_cfao_using_cache">

<input type="checkbox" name="cfao_using_cache" id="chk_cfao_using_cache" value="true"<?php checked($cfao_using_cache, true); ?> />

<?php echo esc_html(__('This site is using a site-caching solution.')); ?>

</label>

<p><?php echo esc_html(__('Select this option if your site is using a plugin like WP Super Cache, or another static caching solution, to ensure that the concatenated files are generated and served before the cache occurs.')); ?></p>

</li>

<?php do_action('cfao_general_settings_tab_list'); ?>

</ul>

</fieldset>

<fieldset id="cf-asset-optimizer-settings-minify-settings">

<legend><h3><?php echo esc_html(__('JavaScript Minification Settings')); ?></h3></legend>

<p><?php echo esc_html(__('Minification of JavaScript is done through Google\'s Closure Compiler. Levels of minification available are listed below.')); ?></p>

<ul>

<li>

<input type="radio" name="js-minify" id="cfao-js-minify-none" value=""<?php checked (empty($minify_js_level)); ?> />

<label for="cfao-js-minify-none"><?php echo esc_html(__('None')); ?></label>

</li>

<li>

<input type="radio" name="js-minify" id="cfao-js-minify-wsonly" value="whitespace"<?php checked($minify_js_level, 'whitespace'); ?> />

<label for="cfao-js-minify-wsonly"><?php echo esc_html(__('Whitespace only (recommended)')); ?></label>

</li>

<li>

<input type="radio" name="js-minify" id="cfao-js-minify-simple" value="simple"<?php checked($minify_js_level, 'simple'); ?> />

<label for="cfao-js-minify-simple"><?php echo esc_html(__('Simple (usually works)')); ?></label>

</li>

<li>

<input type="radio" name="js-minify" id="cfao-js-minify-advanced" value="advanced"<?php checked($minify_js_level, 'advanced'); ?> />

<label for="cfao-js-minify-advanced"><?php echo esc_html(__('Advanced (best performance, requires strict code use)')); ?></label>

</li>

</ul>

</fieldset>

<button class="button-primary" name="cfao_save_settings" value="save_general_settings"><?php echo esc_html('Save General Settings', true); ?></button>

</div>

<?php

}

private static function _displayFileListTab($tab_type) {

$filetab_types = array(

'scripts' => 'JavaScript',

'styles' => 'CSS'

);

if (!in_array($tab_type, array_keys($filetab_types))) {

return;

}

$attr_escaped_type = esc_attr($tab_type);

$html_escaped_name = esc_html(__($filetab_types[$tab_type]));

$files = get_option('cfao_'.$tab_type, array());

if (empty($files) || !is_array($files)) {

$files = array();

}

?>

<div class="tab" id="cf-asset-optimizer-settings-<?php echo $attr_escaped_type; ?>">

<h2 class="tab-title"><?php echo $html_escaped_name; ?></h2>

<?php if (in_array($tab_type, array('scripts', 'styles'))) { ?>

<p><?php echo esc_html(sprintf(__('%s files are stored in: '), $filetab_types[$tab_type])); ?>

<?php

if ($tab_type == 'scripts') {

echo CFAssetOptimizerScripts::getCacheDir();

}

else if ($tab_type == 'styles') {

echo CFAssetOptimizerStyles::getCacheDir();

}

?>

</p>

<p><?php echo esc_html(__('Please be sure the above directory is writable, or could be created, by the web user.')); ?></p>

<?php } ?>

<fieldset id="cf-asset-optimizer-<?php echo $attr_escaped_type; ?>-list">

<legend><h3><?php echo esc_html(__($filetab_types[$tab_type] . ' Files')); ?></h3></legend>

<ul class="concat-file-list">

<?php

foreach ($files as $handle=>$details) {

?>

<li>

<h4><?php echo esc_html($handle); ?></h4>

<ul>

<li><?php echo esc_html(__('Source: ') . $details['src']); ?><input type="hidden" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][src]" value="<?php echo esc_attr($details['src']); ?>" /></li>

<li><?php echo esc_html(__('Version: ') . $details['ver']); ?><input type="hidden" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][ver]" value="<?php echo esc_attr($details['ver']); ?>" /></li>

<li><input type="radio" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][enabled]" value="1"<?php checked($details['enabled'], true); ?> />Enabled</li>

<li><input type="radio" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][enabled]" value=""<?php checked($details['enabled'], false); ?> />Disabled</li>

<?php if (!($details['enabled'])) { ?>

<li>Disabled reason: <?php echo esc_html($details['disable_reason']); ?><input type="hidden" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][disable_reason]" value="<?php echo esc_attr($details['disable_reason']); ?>" /></li>

<?php

}

if ($tab_type == 'scripts') {

?>

<li>

<label><?php echo esc_html(__('Allow Minification?')); ?></label>

<input type="radio" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][minify_script]" id="<?php echo $attr_escaped_type.'-'.$handle.'-minify_script-no'; ?>" value=""<?php checked(empty($details['minify_script'])); ?> />

<label for="<?php echo $attr_escaped_type.'-'.$handle.'-minify_script-no'; ?>"><?php echo esc_html(__('No')); ?></label>

<input type="radio" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][minify_script]" id="<?php echo $attr_escaped_type.'-'.$handle.'-minify_script-yes'; ?>" value="true"<?php checked(!empty($details['minify_script'])); ?> />

<label for="<?php echo $attr_escaped_type.'-'.$handle.'-minify_script-yes'; ?>"><?php echo esc_html(__('Yes (recommended)')); ?></label>

</li>

<?php } ?>

</ul>

<?php if ($details['enabled']) { ?>

<input type="hidden" name="<?php echo $attr_escaped_type; ?>[<?php echo esc_attr($handle); ?>][disable_reason]" value="<?php echo esc_attr('Disabled by user'); ?>" />

<?php } ?>

</li>

<?php

}

?>

</ul>

</fieldset>

<button class="button-primary" name="cfao_save_settings" value="save_<?php echo $attr_escaped_type; ?>"><?php echo esc_html(__('Save '. $filetab_types[$tab_type] . ' Settings')); ?></button>

<button class="button" name="cfao_save_settings" value="clear_<?php echo $attr_escaped_type; ?>_cache"><?php echo esc_html(__('Clear '. $filetab_types[$tab_type] .' Cache')); ?></button>

</div>

<?php

}

public static function saveSettings() {

if (empty($_POST['cfao_save_settings'])) {

// Not our time to save.

return;

}

else {

$tab = 'general';

if (!check_admin_referer('cfao-save-settings', 'cfao-save-settings')) {

wp_die(__('I\'m sorry, Dave. I can\'t do that.'));

}

if ($_POST['cfao_save_settings'] == 'save_general_settings') {

if (!empty($_POST['cfao_using_cache'])) {

update_option('cfao_using_cache', true);

}

else {

update_option('cfao_using_cache', false);

}

update_option('cfao_security_key', md5($_SERVER['SERVER_ADDR'] . time()));

update_option('cfao_minify_js_level', $_POST['js-minify']);

do_action('cfao_save_general_settings', $_POST);

}

else if ($_POST['cfao_save_settings'] == 'save_scripts') {

// Save the scripts data

update_option('cfao_scripts', $_POST['scripts']);

$tab = 'scripts';

}

else if ($_POST['cfao_save_settings'] == 'save_styles') {

update_option('cfao_styles', $_POST['styles']);

$tab = 'styles';

}

else if ($_POST['cfao_save_settings'] == 'clear_scripts_cache') {

$dir = CFAssetOptimizerScripts::getCacheDir();

if (is_dir($dir)) {

$files = opendir($dir);

if ($files) {

while ($file = readdir($files)) {

if (is_file($dir.'/'.$file) && (preg_match('/\.js$/', $file) || $file == CFAssetOptimizerScripts::getLockFile())) {

unlink($dir.'/'.$file);

}

}

}

}

$tab = 'scripts';

}

else if ($_POST['cfao_save_settings'] == 'clear_styles_cache') {

$dir = CFAssetOptimizerStyles::getCacheDir();

if (is_dir($dir)) {

$files = opendir($dir);

if ($files) {

while ($file = readdir($files)) {

if (is_file($dir.'/'.$file) && (preg_match('/\.css$/', $file) || $file == CFAssetOptimizerStyles::getLockFile())) {

unlink($dir.'/'.$file);

}

}

}

}

$tab = 'styles';

}

wp_redirect(add_query_arg('tab', $tab, $_SERVER['REQUEST_URI']));

exit();

}

}