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1 <?php |
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2 /** |
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3 * BackPress script procedural API. |
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4 * |
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5 * @package BackPress |
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6 * @since r16 |
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7 */ |
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8 |
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9 /** |
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10 * Prints script tags in document head. |
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11 * |
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12 * Called by admin-header.php and by wp_head hook. Since it is called by wp_head |
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13 * on every page load, the function does not instantiate the WP_Scripts object |
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14 * unless script names are explicitly passed. Does make use of already |
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15 * instantiated $wp_scripts if present. Use provided wp_print_scripts hook to |
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16 * register/enqueue new scripts. |
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17 * |
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18 * @since r16 |
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19 * @see WP_Dependencies::print_scripts() |
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20 */ |
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21 function wp_print_scripts( $handles = false ) { |
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22 do_action( 'wp_print_scripts' ); |
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23 if ( '' === $handles ) // for wp_head |
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24 $handles = false; |
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25 |
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26 global $wp_scripts; |
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27 if ( !is_a($wp_scripts, 'WP_Scripts') ) { |
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28 if ( !$handles ) |
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29 return array(); // No need to instantiate if nothing's there. |
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30 else |
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31 $wp_scripts = new WP_Scripts(); |
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32 } |
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33 |
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34 return $wp_scripts->do_items( $handles ); |
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35 } |
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36 |
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37 /** |
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38 * Register new JavaScript file. |
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39 * |
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40 * @since r16 |
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41 * @see WP_Dependencies::add() For parameter information. |
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42 */ |
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43 function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) { |
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44 global $wp_scripts; |
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45 if ( !is_a($wp_scripts, 'WP_Scripts') ) |
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46 $wp_scripts = new WP_Scripts(); |
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47 |
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48 $wp_scripts->add( $handle, $src, $deps, $ver ); |
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49 if ( $in_footer ) |
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50 $wp_scripts->add_data( $handle, 'group', 1 ); |
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51 } |
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52 |
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53 /** |
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54 * Localizes a script. |
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55 * |
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56 * Localizes only if script has already been added. |
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57 * |
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58 * @since r16 |
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59 * @see WP_Script::localize() |
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60 */ |
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61 function wp_localize_script( $handle, $object_name, $l10n ) { |
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62 global $wp_scripts; |
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63 if ( !is_a($wp_scripts, 'WP_Scripts') ) |
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64 return false; |
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65 |
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66 return $wp_scripts->localize( $handle, $object_name, $l10n ); |
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67 } |
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68 |
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69 /** |
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70 * Remove a registered script. |
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71 * |
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72 * @since r16 |
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73 * @see WP_Scripts::remove() For parameter information. |
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74 */ |
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75 function wp_deregister_script( $handle ) { |
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76 global $wp_scripts; |
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77 if ( !is_a($wp_scripts, 'WP_Scripts') ) |
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78 $wp_scripts = new WP_Scripts(); |
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79 |
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80 $wp_scripts->remove( $handle ); |
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81 } |
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82 |
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83 /** |
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84 * Enqueues script. |
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85 * |
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86 * Registers the script if src provided (does NOT overwrite) and enqueues. |
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87 * |
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88 * @since r16 |
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89 * @see WP_Script::add(), WP_Script::enqueue() |
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90 */ |
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91 function wp_enqueue_script( $handle, $src = false, $deps = array(), $ver = false, $in_footer = false ) { |
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92 global $wp_scripts; |
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93 if ( !is_a($wp_scripts, 'WP_Scripts') ) |
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94 $wp_scripts = new WP_Scripts(); |
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95 |
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96 if ( $src ) { |
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97 $_handle = explode('?', $handle); |
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98 $wp_scripts->add( $_handle[0], $src, $deps, $ver ); |
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99 if ( $in_footer ) |
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100 $wp_scripts->add_data( $_handle[0], 'group', 1 ); |
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101 } |
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102 $wp_scripts->enqueue( $handle ); |
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103 } |
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104 |
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105 /** |
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106 * Check whether script has been added to WordPress Scripts. |
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107 * |
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108 * The values for list defaults to 'queue', which is the same as enqueue for |
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109 * scripts. |
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110 * |
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111 * @since WP unknown; BP unknown |
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112 * |
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113 * @param string $handle Handle used to add script. |
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114 * @param string $list Optional, defaults to 'queue'. Others values are 'registered', 'queue', 'done', 'to_do' |
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115 * @return bool |
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116 */ |
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117 function wp_script_is( $handle, $list = 'queue' ) { |
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118 global $wp_scripts; |
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119 if ( !is_a($wp_scripts, 'WP_Scripts') ) |
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120 $wp_scripts = new WP_Scripts(); |
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121 |
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122 $query = $wp_scripts->query( $handle, $list ); |
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123 |
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124 if ( is_object( $query ) ) |
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125 return true; |
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126 |
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127 return $query; |
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128 } |