1 | <?php |
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2 | /* |
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3 | Plugin Name: Test select[multiple] sync behavior in Widget Customizer |
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4 | Description: Demonstration of Core issue #31885 via a widget undo/redo feature. |
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5 | Plugin URI: https://core.trac.wordpress.org/ticket/31885 |
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6 | Author: Weston Ruter, David Lonjon, XWP |
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7 | Author URI: https://xwp.co/ |
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8 | GitHub Plugin URI: https://gist.github.com/westonruter/2e56e08881ae296237ca |
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9 | |
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10 | Copyright 2015 XWP.co Pty Ltd |
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11 | |
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12 | This program is free software; you can redistribute it and/or modify |
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13 | it under the terms of the GNU General Public License as published by |
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14 | the Free Software Foundation; version 2 of the License (GPL v2) only. |
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15 | |
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16 | This program is distributed in the hope that it will be useful, |
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17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | GNU General Public License for more details. |
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20 | |
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21 | You should have received a copy of the GNU General Public License |
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22 | along with this program; if not, write to the Free Software |
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23 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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24 | */ |
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25 | |
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26 | class Test_Select_Multiple_Widget extends WP_Widget { |
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27 | |
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28 | public $select_options = array( |
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29 | 'A' => 1, |
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30 | 'B' => 2, |
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31 | 'C' => 3, |
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32 | 'D' => 4, |
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33 | ); |
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34 | |
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35 | /** |
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36 | * Register widget with WordPress. |
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37 | */ |
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38 | function __construct() { |
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39 | parent::__construct( |
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40 | 'test_select_multiple', // Base ID |
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41 | __( 'Test select[multiple]' ) // Name |
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42 | ); |
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43 | |
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44 | add_action( 'customize_controls_print_footer_scripts', array( $this, 'print_customize_footer_script' ) ); |
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45 | } |
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46 | |
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47 | /** |
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48 | * @param array $instance |
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49 | * @return array |
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50 | */ |
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51 | function get_instance( $instance = array() ) { |
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52 | return array_merge( |
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53 | array( |
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54 | 'title' => '', |
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55 | 'select' => array(), |
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56 | ), |
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57 | $instance |
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58 | ); |
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59 | } |
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60 | |
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61 | /** |
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62 | * Front-end display of widget. |
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63 | * |
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64 | * @see WP_Widget::widget() |
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65 | * |
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66 | * @param array $args Widget arguments. |
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67 | * @param array $instance Saved values from database. |
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68 | */ |
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69 | public function widget( $args, $instance ) { |
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70 | $instance = $this->get_instance( $instance ); |
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71 | echo $args['before_widget']; |
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72 | echo $args['before_title']; |
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73 | echo esc_html( apply_filters( 'widget_title', $instance['title'] ) ); |
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74 | echo $args['after_title']; |
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75 | var_dump( $instance['select'] ); |
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76 | echo $args['after_widget']; |
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77 | } |
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78 | |
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79 | /** |
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80 | * Back-end widget form. |
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81 | * |
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82 | * @see WP_Widget::form() |
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83 | * |
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84 | * @param array $instance Previously saved values from database. |
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85 | * @return null |
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86 | */ |
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87 | public function form( $instance ) { |
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88 | $instance = $this->get_instance( $instance ); |
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89 | |
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90 | printf( '<p><label for="%s">Title:</label> <input type="text" id="%s" name="%s" value="%s"></p>', |
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91 | esc_attr( $this->get_field_id( 'title' ) ), |
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92 | esc_attr( $this->get_field_id( 'title' ) ), |
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93 | esc_attr( $this->get_field_name( 'title' ) ), |
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94 | esc_attr( $instance['title'] ) |
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95 | ); |
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96 | printf( '<p><label for="%s">Select:</label><br>', esc_attr( $this->get_field_id( 'select' ) ) ); |
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97 | printf( '<select class="widefat" id="%s" name="%s[]" multiple>', esc_attr( $this->get_field_id( 'select' ) ), esc_attr( $this->get_field_name( 'select' ) ) ); |
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98 | foreach ( $this->select_options as $text => $value ) { |
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99 | printf( |
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100 | '<option %s value="%s">%s</option>', |
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101 | selected( in_array( $value, $instance['select'] ), true, false ), |
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102 | esc_attr( $value ), |
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103 | esc_html( $text ) |
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104 | ); |
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105 | } |
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106 | echo '</select>'; |
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107 | echo '</p>'; |
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108 | |
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109 | return null; |
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110 | } |
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111 | |
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112 | /** |
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113 | * Sanitize widget form values as they are saved. |
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114 | * |
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115 | * @see WP_Widget::update() |
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116 | * |
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117 | * @param array $new_instance Values just sent to be saved. |
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118 | * @param array $old_instance Previously saved values from database. |
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119 | * |
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120 | * @return array Updated safe values to be saved. |
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121 | */ |
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122 | public function update( $new_instance, $old_instance ) { |
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123 | $instance = $this->get_instance( $new_instance ); |
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124 | if ( isset( $new_instance['title'] ) ) { |
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125 | $instance['title'] = sanitize_text_field( $new_instance['title'] ); |
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126 | } |
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127 | if ( isset( $new_instance['select'] ) && is_array( $new_instance['select'] ) ) { |
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128 | $instance['select'] = array_intersect( $new_instance['select'], $this->select_options ); |
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129 | } |
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130 | return $instance; |
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131 | } |
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132 | |
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133 | /** |
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134 | * |
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135 | */ |
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136 | public function print_customize_footer_script() { |
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137 | wp_print_scripts( array( 'customize-controls', 'customize-widgets', 'wp-util' ) ); |
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138 | ?> |
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139 | <style> |
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140 | .widget-history-control-actions a { |
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141 | font-size: 16px; |
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142 | } |
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143 | .widget-history-control-actions a.disabled { |
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144 | color: #DDD; |
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145 | cursor: default; |
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146 | } |
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147 | </style> |
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148 | <script type="text/html" id="tmpl-widget-history-control-actions"> |
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149 | <span class="widget-history-control-actions"> |
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150 | | |
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151 | <a class="widget-control-undo dashicons dashicons-undo disabled" href="#undo" title="<?php esc_attr_e( 'Undo' ) ?>"></a> |
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152 | <a class="widget-control-redo dashicons dashicons-redo disabled" href="#redo" title="<?php esc_attr_e( 'Redo' ) ?>"></a> |
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153 | </span> |
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154 | </script> |
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155 | |
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156 | <script type="text/javascript"> |
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157 | var TestSelectMultipleWidget = (function ( $ ) { |
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158 | var self = {}; |
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159 | self.widgetHistoryControlActionsTpl = wp.template( 'widget-history-control-actions' ); |
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160 | |
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161 | /** |
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162 | * @param {jQuery} widget |
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163 | * @return string |
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164 | */ |
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165 | self.getWidgetControlId = function ( widget ) { |
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166 | var controlId, idBase, widgetNumber; |
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167 | idBase = widget.find( 'input[name=id_base]' ).val(); |
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168 | widgetNumber = widget.find( 'input[name=widget_number]' ).val(); |
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169 | controlId = 'widget_' + idBase + '[' + widgetNumber + ']'; |
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170 | return controlId; |
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171 | }; |
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172 | |
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173 | self.settingHistories = {}; |
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174 | |
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175 | /** |
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176 | * @param {wp.customize.Control} control |
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177 | * @return {object} |
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178 | */ |
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179 | self.getSettingHistory = function ( control ) { |
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180 | var settingHistory = self.settingHistories[ control.id ]; |
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181 | if ( ! settingHistory ) { |
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182 | throw new Error( 'No settingHistory for ' + control.id ); |
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183 | } |
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184 | return settingHistory; |
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185 | }; |
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186 | |
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187 | /** |
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188 | * |
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189 | * @param {wp.customize.Control} control |
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190 | */ |
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191 | self.updateUiState = function ( control ) { |
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192 | var settingHistory = self.getSettingHistory( control ); |
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193 | control.container.find( '.widget-control-undo' ).toggleClass( 'disabled', settingHistory.offset >= settingHistory.stack.length - 1 ); |
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194 | control.container.find( '.widget-control-redo' ).toggleClass( 'disabled', settingHistory.offset <= 0 ); |
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195 | }; |
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196 | |
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197 | /** |
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198 | * |
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199 | * @param {wp.customize.Control} control |
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200 | */ |
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201 | self.undoSettingChange = function ( control ) { |
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202 | var settingHistory = self.getSettingHistory( control ); |
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203 | if ( settingHistory.offset + 1 < settingHistory.stack.length ) { |
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204 | settingHistory.ignoreChanges = true; |
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205 | settingHistory.offset += 1; |
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206 | control.setting( $.extend( {}, settingHistory.stack[ settingHistory.offset ] ) ); |
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207 | settingHistory.ignoreChanges = false; |
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208 | } |
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209 | self.updateUiState( control ); |
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210 | }; |
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211 | |
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212 | /** |
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213 | * |
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214 | * @param {wp.customize.Control} control |
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215 | */ |
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216 | self.redoSettingChange = function ( control ) { |
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217 | var settingHistory = self.getSettingHistory( control ); |
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218 | if ( settingHistory.offset > 0 ) { |
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219 | settingHistory.ignoreChanges = true; |
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220 | settingHistory.offset -= 1; |
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221 | control.setting( $.extend( {}, settingHistory.stack[ settingHistory.offset ] ) ); |
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222 | settingHistory.ignoreChanges = false; |
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223 | } |
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224 | self.updateUiState( control ); |
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225 | }; |
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226 | |
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227 | /** |
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228 | * @param {wp.customize.Control} control |
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229 | * @param {array} instance |
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230 | */ |
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231 | self.onChangeSetting = function ( control, instance ) { |
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232 | var settingHistory = self.getSettingHistory( control ); |
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233 | if ( ! settingHistory.ignoreChanges ) { |
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234 | settingHistory.stack.splice( 0, settingHistory.offset, instance ); |
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235 | settingHistory.offset = 0; |
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236 | self.updateUiState( control ); |
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237 | } |
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238 | }; |
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239 | |
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240 | /** |
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241 | * |
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242 | * @param {wp.customize.Control} control |
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243 | */ |
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244 | self.addWidgetHistory = function ( control ) { |
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245 | var historyControlActions = $( self.widgetHistoryControlActionsTpl() ) |
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246 | widgetControlActionsLeft = control.container.find( '.widget-control-actions .alignleft' ); |
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247 | |
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248 | self.settingHistories[ control.id ] = { |
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249 | offset: 0, |
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250 | stack: [ control.setting() ] |
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251 | }; |
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252 | |
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253 | control.setting.bind( function ( to ) { |
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254 | self.onChangeSetting( control, to ); |
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255 | } ); |
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256 | |
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257 | historyControlActions.find( '.widget-control-undo' ).on( 'click', function ( e ) { |
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258 | e.preventDefault(); |
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259 | self.undoSettingChange( control ); |
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260 | } ); |
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261 | historyControlActions.find( '.widget-control-redo' ).on( 'click', function ( e ) { |
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262 | e.preventDefault(); |
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263 | self.redoSettingChange( control ); |
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264 | } ); |
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265 | |
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266 | // Add the undo and redo links |
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267 | widgetControlActionsLeft.append( historyControlActions ); |
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268 | |
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269 | // Remove the redundant Close link |
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270 | widgetControlActionsLeft.find( '.widget-control-close' ).each( function () { |
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271 | if ( this.previousSibling && 3 === this.previousSibling.nodeType ) { |
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272 | // Remove the ' | ' |
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273 | this.previousSibling.parentNode.removeChild( this.previousSibling ); |
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274 | } |
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275 | $( this ).hide(); |
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276 | } ); |
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277 | }; |
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278 | |
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279 | /** |
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280 | * |
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281 | * @param {jQuery.Event} e |
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282 | * @param {jQuery} widget |
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283 | */ |
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284 | self.onWidgetAdded = function ( e, widget ) { |
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285 | var controlId = self.getWidgetControlId( widget ); |
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286 | wp.customize.control( controlId, function ( control ) { |
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287 | self.addWidgetHistory( control ); |
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288 | } ); |
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289 | }; |
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290 | |
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291 | $( document ).on( 'widget-added', _.bind( self.onWidgetAdded, self ) ); |
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292 | |
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293 | return self; |
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294 | }( jQuery )); |
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295 | </script> |
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296 | |
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297 | <?php |
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298 | } |
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299 | } |
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300 | |
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301 | add_action( 'widgets_init', function () { |
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302 | register_widget( 'Test_Select_Multiple_Widget' ); |
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303 | } ); |
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