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   1  <?php
   2  /**
   3   * BackPress styles procedural API.
   4   *
   5   * @package BackPress
   6   * @since r79
   7   */
   8  
   9  /**
  10   * Display styles that are in the queue or part of $handles.
  11   *
  12   * @since r79
  13   * @uses do_action() Calls 'wp_print_styles' hook.
  14   * @global object $wp_styles The WP_Styles object for printing styles.
  15   *
  16   * @param array $handles (optional) Styles to be printed.  (void) prints queue, (string) prints that style, (array of strings) prints those styles.
  17   * @return bool True on success, false on failure.
  18   */
  19  function wp_print_styles( $handles = false ) {
  20      do_action( 'wp_print_styles' );
  21      if ( '' === $handles ) // for wp_head
  22          $handles = false;
  23  
  24      global $wp_styles;
  25      if ( !is_a($wp_styles, 'WP_Styles') ) {
  26          if ( !$handles )
  27              return array(); // No need to instantiate if nothing's there.
  28          else
  29              $wp_styles = new WP_Styles();
  30      }
  31  
  32      return $wp_styles->do_items( $handles );
  33  }
  34  
  35  /**
  36   * Register CSS style file.
  37   *
  38   * @since r79
  39   * @see WP_Styles::add() For parameter and additional information.
  40   */
  41  function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
  42      global $wp_styles;
  43      if ( !is_a($wp_styles, 'WP_Styles') )
  44          $wp_styles = new WP_Styles();
  45  
  46      $wp_styles->add( $handle, $src, $deps, $ver, $media );
  47  }
  48  
  49  /**
  50   * Remove a registered CSS file.
  51   *
  52   * @since r79
  53   * @see WP_Styles::remove() For parameter and additional information.
  54   */
  55  function wp_deregister_style( $handle ) {
  56      global $wp_styles;
  57      if ( !is_a($wp_styles, 'WP_Styles') )
  58          $wp_styles = new WP_Styles();
  59  
  60      $wp_styles->remove( $handle );
  61  }
  62  
  63  /**
  64   * Enqueue a CSS style file.
  65   *
  66   * @since r79
  67   * @see WP_Styles::add(), WP_Styles::enqueue()
  68   */
  69  function wp_enqueue_style( $handle, $src = false, $deps = array(), $ver = false, $media = false ) {
  70      global $wp_styles;
  71      if ( !is_a($wp_styles, 'WP_Styles') )
  72          $wp_styles = new WP_Styles();
  73  
  74      if ( $src ) {
  75          $_handle = explode('?', $handle);
  76          $wp_styles->add( $_handle[0], $src, $deps, $ver, $media );
  77      }
  78      $wp_styles->enqueue( $handle );
  79  }
  80  
  81  /**
  82   * Check whether style has been added to WordPress Styles.
  83   *
  84   * The values for list defaults to 'queue', which is the same as enqueue for
  85   * styles.
  86   *
  87   * @since WP unknown; BP unknown
  88   *
  89   * @param string $handle Handle used to add style.
  90   * @param string $list Optional, defaults to 'queue'. Others values are 'registered', 'queue', 'done', 'to_do'
  91   * @return bool
  92   */
  93  function wp_style_is( $handle, $list = 'queue' ) {
  94      global $wp_styles;
  95      if ( !is_a($wp_styles, 'WP_Styles') )
  96          $wp_styles = new WP_Styles();
  97  
  98      $query = $wp_styles->query( $handle, $list );
  99  
 100      if ( is_object( $query ) )
 101          return true;
 102  
 103      return $query;
 104  }