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<?php
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/**
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* @file
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* Class Sweaver.
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*/
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class Sweaver {
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private static $instance;
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private $style = NULL;
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private $theme = NULL;
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private $plugins = array();
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private $configured = FALSE;
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private $plugins_registry = array();
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private $plugins_registry_enabled = array();
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/**
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* Constructor.
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* Private constructor to make sure this is never
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* instantiated by the constructor.
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*/
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private function __construct() {
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if ($theme_key = sweaver_session(NULL, 'sweaver_theme')) {
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$this->set_current_style($theme_key);
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}
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else {
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$this->set_current_style(variable_get('theme_default', 'garland'));
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}
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if (!$this->is_configured()) {
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$this->register_plugins_configuration();
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}
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}
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/**
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* GetInstance
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* Static method to always return the same object Sweaver.
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* There can only be one Sweaver.
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*/
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final static public function get_instance() {
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if (!isset(self::$instance)) {
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self::$instance = new Sweaver();
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}
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return self::$instance;
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}
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/**
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* register_plugins_configuration.
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* Registers an array of plugin configuration data to Sweaver.
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*/
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public function register_plugins_configuration() {
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// Load the required plugins of ctools and the sweaver base class.
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ctools_include('plugins');
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// Check if the configuration was cached or not.
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if ($plugins_cache = cache_get('sweaver_plugins')) {
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$this->plugins_registry = $plugins_cache->data['sweaver_plugins'];
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$this->plugins_registry_enabled = $plugins_cache->data['sweaver_plugins_enabled'];
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}
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else {
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$this->plugins_registry = ctools_get_plugins('sweaver', 'plugins');
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// Build enabled plugins.
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foreach ($this->plugins_registry as $key => $plugin) {
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$this->plugins_registry[$key]['enabled'] = 0;
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if (variable_get('sweaver_plugin_status_'. $key, FALSE)) {
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$this->plugins_registry[$key]['enabled'] = 1;
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$this->plugins_registry_enabled[$key] = $this->plugins_registry[$key];
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}
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}
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// Cache the plugins ourselves too.
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$sweaver_plugins['sweaver_plugins'] = $this->plugins_registry;
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$sweaver_plugins['sweaver_plugins_enabled'] = $this->plugins_registry_enabled;
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cache_set('sweaver_plugins', $sweaver_plugins);
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}
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$this->configured = TRUE;
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}
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/**
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* Get the sweaver plugins configurations.
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*/
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public function get_plugins_registry($enabled = TRUE) {
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return $enabled ? $this->plugins_registry_enabled : $this->plugins_registry;
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}
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/**
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* is_configured.
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* Tells us if Sweaver is configured.
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*/
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public function is_configured() {
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return $this->configured;
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}
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/**
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* add_plugin.
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* Adds a sweaver plugin to the stash.
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*/
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private function add_plugin(Sweaver_plugin $plugin) {
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$this->plugins[] = $plugin;
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}
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/**
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* is_plugin_activated
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* Check if a plugin is activated
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* @return true if activated
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*/
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public function is_plugin_activated($name) {
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if ($this->plugins[$name]) {
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return isset($this->plugins_registry_enabled[$name]);
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}
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return false;
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}
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/**
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* get_plugin.
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* Gets a sweaver plugin, and instantiates it if not loaded yet.
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*/
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public function get_plugin($name, $enabled = TRUE) {
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if (!isset($this->plugins_registry[$name])) {
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drupal_set_message(t('No configuration found for @name in the plugin registry', array('@name' => $name)));
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}
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if (!isset($this->plugins[$name])) {
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module_load_include('inc', 'sweaver', 'sweaver_plugin');
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$check = ($enabled) ? isset($this->plugins_registry_enabled[$name]) : TRUE;
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if ($check && $class = ctools_plugin_get_class($this->plugins_registry[$name], 'handler')) {
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// Check that class exists until CTools & registry issues are resolved.
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if (class_exists($class)) {
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$this->plugins[$name] = new $class($this->plugins_registry[$name]);
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}
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}
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else {
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$this->plugins[$name] = FALSE;
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}
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}
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return $this->plugins[$name];
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}
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/**
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* Sets the current style.
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* @param $theme_key
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* Optional, if missing the global one will be used.
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*/
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public function set_current_style($theme_key) {
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$this->theme = $theme_key;
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}
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/**
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* Return a style for a theme.
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*
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* @param $theme
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* The machine name of the theme.
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* @param $reset
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* Whether to reset the current $css variable or not.
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* @return $css
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* The css definition for this theme.
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*/
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public function get_current_style($reset = FALSE) {
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$run = &drupal_static('run', FALSE);
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$css = &drupal_static('css', FALSE);
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if (!$run || $reset) {
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$run = TRUE;
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if (sweaver_session(NULL, 'sweaver_temp')) {
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ctools_include('object-cache');
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$css = ctools_object_cache_get('sweaver-styling', 'sweaver-styling');
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if (!isset($css->style_id)) {
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$css = new stdClass();
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}
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$css->type = 'draft';
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}
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elseif (sweaver_session(NULL, 'draft_mode')) {
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$table = (sweaver_session(NULL, 'loaded_table') == 'live') ? 'sweaver_style' : 'sweaver_style_draft';
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$css = db_query("SELECT * FROM {". $table ."} where style_id = :style_id", array(':style_id' => sweaver_session(NULL, 'loaded_style')))->fetchObject();
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if (!isset($css->style_id)) {
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$css = new stdClass();
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}
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$css->type = 'draft';
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}
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else {
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$css = db_query("SELECT style_id, theme, style, css, customcss, palette, themesettings, active FROM {sweaver_style} where theme = :theme and active = 1", array(':theme' => $this->theme))->fetchObject();
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if (!isset($css->style_id)) {
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$css = new stdClass();
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}
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$css->type = 'live';
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}
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if (!isset($css->style_id)) {
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$css = NULL;
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}
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}
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$this->style = $css;
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return $css;
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}
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/**
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* Returns the currently known theme_key.
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*/
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public function get_theme_key() {
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return $this->theme;
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}
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}
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