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