source: trunk/www.guidonia.net/wp/wp-includes/class.wp-scripts.php@ 44

Last change on this file since 44 was 44, checked in by luciano, 15 years ago
File size: 5.3 KB
Line 
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 */
19class 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 $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
94 if ( isset($this->args[$handle]) )
95 $ver .= '&amp;' . $this->args[$handle];
96
97 $src = $this->registered[$handle]->src;
98
99 if ( $this->do_concat ) {
100 $srce = apply_filters( 'script_loader_src', $src, $handle );
101 if ( $this->in_default_dir($srce) ) {
102 $this->print_code .= $this->print_scripts_l10n( $handle, false );
103 $this->concat .= "$handle,";
104 $this->concat_version .= "$handle$ver";
105 return true;
106 } else {
107 $this->ext_handles .= "$handle,";
108 $this->ext_version .= "$handle$ver";
109 }
110 }
111
112 $this->print_scripts_l10n( $handle );
113 if ( !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
114 $src = $this->base_url . $src;
115 }
116
117 $src = add_query_arg('ver', $ver, $src);
118 $src = esc_url(apply_filters( 'script_loader_src', $src, $handle ));
119
120 if ( $this->do_concat )
121 $this->print_html .= "<script type='text/javascript' src='$src'></script>\n";
122 else
123 echo "<script type='text/javascript' src='$src'></script>\n";
124
125 return true;
126 }
127
128 /**
129 * Localizes a script
130 *
131 * Localizes only if script has already been added
132 *
133 * @param string handle Script name
134 * @param string object_name Name of JS object to hold l10n info
135 * @param array l10n Array of JS var name => localized string
136 * @return bool Successful localization
137 */
138 function localize( $handle, $object_name, $l10n ) {
139 if ( !$object_name || !$l10n )
140 return false;
141 return $this->add_data( $handle, 'l10n', array( $object_name, $l10n ) );
142 }
143
144 function set_group( $handle, $recursion, $group = false ) {
145 $grp = isset($this->registered[$handle]->extra['group']) ? (int) $this->registered[$handle]->extra['group'] : 0;
146 if ( false !== $group && $grp > $group )
147 $grp = $group;
148
149 return parent::set_group( $handle, $recursion, $grp );
150 }
151
152 function all_deps( $handles, $recursion = false, $group = false ) {
153 $r = parent::all_deps( $handles, $recursion );
154 if ( !$recursion )
155 $this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
156 return $r;
157 }
158
159 function do_head_items() {
160 $this->do_items(false, 0);
161 return $this->done;
162 }
163
164 function do_footer_items() {
165 if ( !empty($this->in_footer) ) {
166 foreach( $this->in_footer as $key => $handle ) {
167 if ( !in_array($handle, $this->done, true) && isset($this->registered[$handle]) ) {
168 $this->do_item($handle);
169 $this->done[] = $handle;
170 unset( $this->in_footer[$key] );
171 }
172 }
173 }
174 return $this->done;
175 }
176
177 function in_default_dir($src) {
178 if ( ! $this->default_dirs )
179 return true;
180
181 foreach ( (array) $this->default_dirs as $test ) {
182 if ( 0 === strpos($src, $test) )
183 return true;
184 }
185 return false;
186 }
187
188 function reset() {
189 $this->do_concat = false;
190 $this->print_code = '';
191 $this->concat = '';
192 $this->concat_version = '';
193 $this->print_html = '';
194 $this->ext_version = '';
195 $this->ext_handles = '';
196 }
197}
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