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<?php namespace ProcessWire;

/**
 * jQuery UI and optional plugins
 *
 */
class JqueryUI extends ModuleJS { 

  public static function getModuleInfo() {
    return array(
      'title' => 'jQuery UI',
      'version' => '1.10.4',
      'summary' => 'jQuery UI as required by ProcessWire and plugins',
      'href' => 'https://ui.jquery.com', 
      'permanent' => true, 
    );
  }
  
  protected $filesLoaded = array();

  /**
   * Wired to API
   * 
   */
  public function wired() {
    
    $config = $this->wire()->config;
    $debug = $config->debug;
    
    $this->loadStyles = false;
    $this->loadScripts = false;
    
    $components = array(
      'latest' => 'dev/JqueryUI.js',
      'modal' => $debug ? 'modal.js' : 'modal.min.js',
      'panel' => $debug ? 'panel.js' : 'panel.min.js',
      'touch' => 'touch.js'
    );
    
    $this->addComponents($components);
    $url = $config->urls('JqueryUI');

    if($config->debug === 'dev' && $config->admin) {
      $this->loadScripts = false;
      $jQueryUI = $url . $components['latest'];
    } else {
      $jQueryUI = $url . 'JqueryUI.js';
    }
    $config->scripts->add($jQueryUI);
    $this->filesLoaded['jquery-ui'] = $jQueryUI;

    parent::wired();
  }

  /**
   * Module init
   * 
   */
  public function init() {
    parent::init();
    if($this->wire()->session->get('touch')) $this->use('touch'); 
  }

  /**
   * Load/use a component 
   * 
   * Available components:
   *  - modal: modal window support
   *  - panel: slide-out panel support
   *  - touch: jQuery UI Touch Punch
   *  - vex: Vex dialog library
   *  - selectize: Selectize input elements without theme
   *  - selectize.default: Selectize input with default theme
   *  - selectize.legacy: Selectize input with legacy theme
   *  - selectize.bootstrap2: Selectize input with bootstrap2 theme
   *  - selectize.bootstrap3: Selectize input with bootstrap3 theme
   * 
   * @param string $name 
   * @return $this|ModuleJS
   * 
   */
  public function ___use($name) {
    if($name == 'panel') {
      // also add stylesheet when panel component requested
      $this->config->styles->add($this->wire()->config->urls('JqueryUI') . "panel.css");
    } else if($name == 'vex') {
      $this->useVex();
      return $this;
    } else if(strpos($name, 'selectize') === 0) {
      $this->useSelectize($name);
      return $this; 
    } else if($name === 'latest') {
      $oldFile = isset($this->filesLoaded['jquery-ui']) ? $this->filesLoaded['jquery-ui'] : null;
      if($oldFile !== null) {
        // replace rather than add
        $config = $this->wire()->config;
        $url = $config->urls('JqueryUI');
        $newFile = $url . $this->components['latest'];
        $config->scripts->replace($oldFile, $newFile);
        $this->filesLoaded['jquery-ui'] = $newFile;
        return $this;
      } else {
        // let it be added by parent use() method
      }
      
    }
    return parent::___use($name);
  }

  /**
   * Get URL to JqueryUI module
   * 
   * @param string $name
   * @return string
   * 
   */
  protected function url($name = '') {
    return $this->wire()->config->urls('JqueryUI') . ($name ? "$name/" : "");
  }

  /**
   * Load/use VEX component
   * 
   */
  protected function useVex() {
    if(isset($this->filesLoaded['vex-css'])) return;
    $config = $this->wire()->config;
    $url = $this->url('vex');
    $fileCSS = $url . 'css/vex.css';
    $this->filesLoaded['vex-css'] = $fileCSS;
    $config->styles->add($fileCSS);
    $config->styles->add($url . 'styles/vex-theme-default.css');
    $config->scripts->add($url . 'scripts/vex.combined.min.js');
    $adminTheme = $this->wire()->adminTheme;
    if($adminTheme) $adminTheme->addExtraMarkup('head',
      "<script>" .
      "vex.defaultOptions.className='vex-theme-default';" .
      "vex.dialog.buttons.YES.text='" . __('Ok', 'common') . "';" . // Yes/Ok button text for Confirm dialog
      "vex.dialog.buttons.NO.text='" . __('Cancel', 'common') . "';" . // No/Cancel button text for Confirm dialog
      "</script>"
    );
  }

  /**
   * Load/use selectize component
   * 
   * @param string $name One of 'selectize', 'selectize.default', 'selectize.legacy', 'selectize.bootstrap2', 'selectize.bootstrap3'
   * 
   */
  protected function useSelectize($name = '') {
    
    $theme = '';
    if(strpos($name, '.')) list(,$theme) = explode('.', $name, 2); // i.e. 'selectize.default'
    
    $config = $this->wire()->config;
    $url = $this->url('selectize');
    $fileCSS = $url . "css/selectize" . ($theme ? ".$theme" : "") . ".css";
    $fileJS = $url . 'js/standalone/selectize.' . ($config->debug ? 'js' : 'min.js');
    
    if(isset($this->filesLoaded['selectize-css'])) { 
      if($this->filesLoaded['selectize-css'] === $fileCSS) {
        $fileCSS = ''; // file already added
      } else {
        $config->styles->remove($this->filesLoaded['selectize-css']); // replace
      }
    }
    
    if($fileCSS) {
      $config->styles->add($fileCSS);
      $this->filesLoaded['selectize-css'] = $fileCSS;
    }
    
    if(!isset($this->fileLoaded['selectize-js'])) {
      $config->scripts->add($fileJS);
      $this->filesLoaded['selectize-js'] = $fileJS;
    }
  }


}