AlkantarClanX12
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<?php
/**
* @file
* Allows administrators to inject CSS into the page output based on
* configurable rules. Useful for adding simple CSS tweaks without modifying
* a site's official theme.
*/
/**
* Deploy this CSS snippet on every page except the listed pages.
*/
define('CSS_INJECTOR_PAGES_NOTLISTED', 0);
/**
* Deploy this CSS snippet on only the listed pages.
*/
define('CSS_INJECTOR_PAGES_LISTED', 1);
/**
* Deploy this CSS snippet only if the associated PHP code returns TRUE.
*/
define('CSS_INJECTOR_PHP', 2);
/**
* Implements hook_help().
*/
function css_injector_help($path, $arg) {
$output = '';
switch ($path) {
case 'admin/config/modules#description':
$output .= t('Allows administrators to inject CSS into the page output based on configurable rules.');
break;
case 'admin/config/development/css-injector':
$output .= '<p>' . t('Use CSS injection rules to add small snippets of CSS to the page output when specific criteria are met. For example, a simple rule could change the page background color at night or float a particular div to the right on node editing pages.') . '</p>';
break;
}
return $output;
}
/**
* Implements hook_init().
* Checks to see whether any CSS files should be added to the current page,
* based on rules configured by the site administrator.
*/
function css_injector_init() {
$css_rules = _css_injector_load_rule();
foreach ($css_rules as $css_rule) {
if (!isset($css_rule['enabled']) || $css_rule['enabled']) {
if (_css_injector_evaluate_rule($css_rule)) {
$file_uri = _css_injector_rule_uri($css_rule['crid']);
$theme_rules = unserialize($css_rule['rule_themes']);
global $theme;
if (!is_array($theme_rules) || empty($theme_rules) || in_array($theme, $theme_rules, true)) {
switch ($css_rule['media']) {
case 'all':
case 'screen':
case 'print':
drupal_add_css($file_uri, array('type' => 'file','group' => CSS_THEME,'media' => $css_rule['media'],'preprocess' => $css_rule['preprocess']));
break;
case 'IE 7':
case 'IE 8':
case 'IE 9':
drupal_add_css($file_uri, array(
'group' => CSS_THEME,
'browsers' => array('IE' => $css_rule['media'], '!IE' => FALSE),
'preprocess' => $css_rule['preprocess'])
);
break;
}
}
}
}
}
}
/**
* Implements hook_css_alter().
* Since we're trying to give the administrator complete control, we'll move
* CSS that this module has added to a high weight, higher even than the theme's
* CSS files. Currently the weight is 200 + the crid, which is currently higher
* than Bartik's CSS.
*
* @param $css
* The array of CSS files.
*/
function css_injector_css_alter(&$css) {
$css_rules = _css_injector_load_rule();
foreach ($css_rules as $css_rule) {
$file_uri = _css_injector_rule_uri($css_rule['crid']);
if (!empty($css[$file_uri])) {
$css[$file_uri]['weight'] = 200 + $css_rule['crid'];
}
}
}
/**
* Implements hook_menu().
* Defines menu callbacks for CSS Injector's configuration pages.
*/
function css_injector_menu() {
$items = array(
'admin/config/development/css-injector' => array(
'title' => 'CSS injector',
'description' => 'Add CSS to the page output based on configurable rules.',
'page callback' => 'drupal_get_form',
'page arguments' => array('css_injector_admin_form'),
'access arguments' => array('administer css injection'),
'file' => 'css_injector.admin.inc',
),
'admin/config/development/css-injector/edit' => array(
'title' => 'Edit CSS injector rule',
'page callback' => 'drupal_get_form',
'page arguments' => array('css_injector_edit'),
'access arguments' => array('administer css injection'),
'file' => 'css_injector.admin.inc',
'type' => MENU_CALLBACK,
),
'admin/config/development/css-injector/add' => array(
'title' => 'Add CSS injector rule',
'page callback' => 'drupal_get_form',
'page arguments' => array('css_injector_edit'),
'access arguments' => array('administer css injection'),
'file' => 'css_injector.admin.inc',
'type' => MENU_CALLBACK,
),
'admin/config/development/css-injector/delete' => array(
'title' => 'Delete CSS injector rule',
'page callback' => 'drupal_get_form',
'page arguments' => array('css_injector_delete_confirm'),
'access arguments' => array('administer css injection'),
'file' => 'css_injector.admin.inc',
'type' => MENU_CALLBACK,
),
);
return $items;
}
/**
* Implements hook_theme().
*/
function css_injector_theme() {
$items['css_injector_admin_form'] = array(
'render element' => 'form',
'file' => 'css_injector.admin.inc',
);
return $items;
}
/**
* Implements hook_permission().
*/
function css_injector_permission() {
return array(
'administer css injection' => array(
'title' => t('Administer CSS Injection'),
),
);
}
/**
* Helper function to load all CSS injection rules.
*/
function _css_injector_load_rule($crid = NULL, $reset = FALSE) {
static $rules;
// TODO: Change to drupal_static_fast pattern.
if (!isset($rules) || $reset) {
if (!$reset && ($cache = cache_get('css_injector:rules')) && !empty($cache->data)) {
$rules = $cache->data;
}
else {
$rules = array();
$results = db_query("SELECT * FROM {css_injector_rule}", array(), array('fetch' => PDO::FETCH_ASSOC))->fetchAllAssoc('crid');
foreach ($results as $id => $rule) {
$rules[$id] = $rule;
}
cache_set('css_injector:rules', $rules);
}
}
if (is_numeric($crid)) {
return $rules[$crid];
}
else {
return $rules;
}
}
/**
* Helper function to delete an existing rule and its accompanying file.
*/
function _css_injector_delete_rule($crid) {
if ($rule = _css_injector_load_rule($crid)) {
file_unmanaged_delete(_css_injector_rule_uri($crid));
db_delete('css_injector_rule')
->condition('crid', $crid)
->execute();
drupal_set_message(t('The CSS rule %title has been deleted.', array('%title' => $rule['title'])));
}
}
/**
* Helper function to determine whether a rule's conditions are met.
*
* @param $css_rule
* Array describing the rule.
*/
function _css_injector_evaluate_rule($css_rule = array()) {
// Match path if necessary.
if (!empty($css_rule['rule_conditions'])) {
if ($css_rule['rule_type'] < CSS_INJECTOR_PHP) {
$path = drupal_get_path_alias($_GET['q']);
// Compare with the internal and path alias (if any).
$page_match = drupal_match_path($path, $css_rule['rule_conditions']);
if ($path != $_GET['q']) {
$page_match = $page_match || drupal_match_path($_GET['q'], $css_rule['rule_conditions']);
}
// When $css_rule['rule_type'] has a value of
// CSS_INJECTOR_PAGES_NOTLISTED, the rule is matched on
// all pages except those listed in $css_rule['rule_conditions'].
// When set to CSS_INJECTOR_PAGES_LISTED, it is displayed only on those
// pages listed in $css_rule['rule_type'].
$page_match = !($css_rule['rule_type'] xor $page_match);
}
else {
if (module_exists('php')) {
$page_match = php_eval($css_rule['rule_conditions']);
}
else {
$page_match = FALSE;
}
}
}
else {
$page_match = TRUE;
}
return $page_match;
}
/**
* Return the URI for a crid.
* @param $crid
* The integer identifying the CSS Rule ID (crid)
*/
function _css_injector_rule_uri($crid) {
if (!empty($crid)) {
$uri = 'public://css_injector/css_injector_' . $crid . '.css';
return $uri;
}
}