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1 <?php 2 /** 3 * BackPress Scripts enqueue. 4 * 5 * These classes were refactored from the WordPress WP_Scripts and WordPress 6 * script enqueue API. 7 * 8 * @package BackPress 9 * @since r16 10 */ 11 12 /** 13 * BackPress Scripts enqueue class. 14 * 15 * @package BackPress 16 * @uses WP_Dependencies 17 * @since r16 18 */ 19 class WP_Scripts extends WP_Dependencies { 20 var $base_url; // Full URL with trailing slash 21 var $content_url; 22 var $default_version; 23 var $in_footer = array(); 24 var $concat = ''; 25 var $concat_version = ''; 26 var $do_concat = false; 27 var $print_html = ''; 28 var $print_code = ''; 29 var $ext_handles = ''; 30 var $ext_version = ''; 31 var $default_dirs; 32 33 function __construct() { 34 do_action_ref_array( 'wp_default_scripts', array(&$this) ); 35 } 36 37 /** 38 * Prints scripts 39 * 40 * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies. 41 * 42 * @param mixed handles (optional) Scripts to be printed. (void) prints queue, (string) prints that script, (array of strings) prints those scripts. 43 * @param int group (optional) If scripts were queued in groups prints this group number. 44 * @return array Scripts that have been printed 45 */ 46 function print_scripts( $handles = false, $group = false ) { 47 return $this->do_items( $handles, $group ); 48 } 49 50 function print_scripts_l10n( $handle, $echo = true ) { 51 if ( empty($this->registered[$handle]->extra['l10n']) || empty($this->registered[$handle]->extra['l10n'][0]) || !is_array($this->registered[$handle]->extra['l10n'][1]) ) 52 return false; 53 54 $object_name = $this->registered[$handle]->extra['l10n'][0]; 55 56 $data = "var $object_name = {\n"; 57 $eol = ''; 58 foreach ( $this->registered[$handle]->extra['l10n'][1] as $var => $val ) { 59 if ( 'l10n_print_after' == $var ) { 60 $after = $val; 61 continue; 62 } 63 $data .= "$eol\t$var: \"" . esc_js( $val ) . '"'; 64 $eol = ",\n"; 65 } 66 $data .= "\n};\n"; 67 $data .= isset($after) ? "$after\n" : ''; 68 69 if ( $echo ) { 70 echo "<script type='text/javascript'>\n"; 71 echo "/* <![CDATA[ */\n"; 72 echo $data; 73 echo "/* ]]> */\n"; 74 echo "</script>\n"; 75 return true; 76 } else { 77 return $data; 78 } 79 } 80 81 function do_item( $handle, $group = false ) { 82 if ( !parent::do_item($handle) ) 83 return false; 84 85 if ( 0 === $group && $this->groups[$handle] > 0 ) { 86 $this->in_footer[] = $handle; 87 return false; 88 } 89 90 if ( false === $group && in_array($handle, $this->in_footer, true) ) 91 $this->in_footer = array_diff( $this->in_footer, (array) $handle ); 92 93 if ( null === $this->registered[$handle]->ver ) 94 $ver = ''; 95 else 96 $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version; 97 98 if ( isset($this->args[$handle]) ) 99 $ver = $ver ? $ver . '&' . $this->args[$handle] : $this->args[$handle]; 100 101 $src = $this->registered[$handle]->src; 102 103 if ( $this->do_concat ) { 104 $srce = apply_filters( 'script_loader_src', $src, $handle ); 105 if ( $this->in_default_dir($srce) ) { 106 $this->print_code .= $this->print_scripts_l10n( $handle, false ); 107 $this->concat .= "$handle,"; 108 $this->concat_version .= "$handle$ver"; 109 return true; 110 } else { 111 $this->ext_handles .= "$handle,"; 112 $this->ext_version .= "$handle$ver"; 113 } 114 } 115 116 $this->print_scripts_l10n( $handle ); 117 if ( !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) { 118 $src = $this->base_url . $src; 119 } 120 121 if ( !empty($ver) ) 122 $src = add_query_arg('ver', $ver, $src); 123 $src = esc_url(apply_filters( 'script_loader_src', $src, $handle )); 124 125 if ( $this->do_concat ) 126 $this->print_html .= "<script type='text/javascript' src='$src'></script>\n"; 127 else 128 echo "<script type='text/javascript' src='$src'></script>\n"; 129 130 return true; 131 } 132 133 /** 134 * Localizes a script 135 * 136 * Localizes only if script has already been added 137 * 138 * @param string handle Script name 139 * @param string object_name Name of JS object to hold l10n info 140 * @param array l10n Array of JS var name => localized string 141 * @return bool Successful localization 142 */ 143 function localize( $handle, $object_name, $l10n ) { 144 if ( !$object_name || !$l10n ) 145 return false; 146 return $this->add_data( $handle, 'l10n', array( $object_name, $l10n ) ); 147 } 148 149 function set_group( $handle, $recursion, $group = false ) { 150 $grp = isset($this->registered[$handle]->extra['group']) ? (int) $this->registered[$handle]->extra['group'] : 0; 151 if ( false !== $group && $grp > $group ) 152 $grp = $group; 153 154 return parent::set_group( $handle, $recursion, $grp ); 155 } 156 157 function all_deps( $handles, $recursion = false, $group = false ) { 158 $r = parent::all_deps( $handles, $recursion ); 159 if ( !$recursion ) 160 $this->to_do = apply_filters( 'print_scripts_array', $this->to_do ); 161 return $r; 162 } 163 164 function do_head_items() { 165 $this->do_items(false, 0); 166 return $this->done; 167 } 168 169 function do_footer_items() { 170 if ( !empty($this->in_footer) ) { 171 foreach( $this->in_footer as $key => $handle ) { 172 if ( !in_array($handle, $this->done, true) && isset($this->registered[$handle]) ) { 173 $this->do_item($handle); 174 $this->done[] = $handle; 175 unset( $this->in_footer[$key] ); 176 } 177 } 178 } 179 return $this->done; 180 } 181 182 function in_default_dir($src) { 183 if ( ! $this->default_dirs ) 184 return true; 185 186 foreach ( (array) $this->default_dirs as $test ) { 187 if ( 0 === strpos($src, $test) ) 188 return true; 189 } 190 return false; 191 } 192 193 function reset() { 194 $this->do_concat = false; 195 $this->print_code = ''; 196 $this->concat = ''; 197 $this->concat_version = ''; 198 $this->print_html = ''; 199 $this->ext_version = ''; 200 $this->ext_handles = ''; 201 } 202 }
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