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<title>[32012] trunk/src/wp-admin/js/customize-widgets.js: Customize Widgets: Improve sync logic for select[multiple] inputs.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/32012">32012</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/32012","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-04-04 16:33:24 +0000 (Sat, 04 Apr 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Customize Widgets: Improve sync logic for select[multiple] inputs.

The current logic doesn't account for the special case of `select[multiple]` inputs which lack a single value to synchronize: The value to synchronize is an array of zero or more values.
This change replaces `_getInputStatePropertyName()` with `_getInputState()`, which returns the state for an input depending on its type, and `_setInputState()`, which updates an input's state based on its type.

props westonruter.
fixes <a href="https://core.trac.wordpress.org/ticket/31885">#31885</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminjscustomizewidgetsjs">trunk/src/wp-admin/js/customize-widgets.js</a></li>
</ul>

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<h3>Diff</h3>
<a id="trunksrcwpadminjscustomizewidgetsjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/js/customize-widgets.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/js/customize-widgets.js        2015-04-04 16:07:48 UTC (rev 32011)
+++ trunk/src/wp-admin/js/customize-widgets.js  2015-04-04 16:33:24 UTC (rev 32012)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -927,19 +927,50 @@
</span><span class="cx" style="display: block; padding: 0 10px">                },
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                /**
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                 * Get the property that represents the state of an input.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+          * Get the state for an input depending on its type.
</ins><span class="cx" style="display: block; padding: 0 10px">                  *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                 * @param {jQuery|DOMElement} input
-                * @returns {string}
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+          * @param {jQuery|Element} input
+                * @returns {string|boolean|array|*}
</ins><span class="cx" style="display: block; padding: 0 10px">                  * @private
</span><span class="cx" style="display: block; padding: 0 10px">                 */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                _getInputStatePropertyName: function( input ) {
-                       var $input = $( input );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         _getInputState: function( input ) {
+                       input = $( input );
+                       if ( input.is( ':radio, :checkbox' ) ) {
+                               return input.prop( 'checked' );
+                       } else if ( input.is( 'select[multiple]' ) ) {
+                               return input.find( 'option:selected' ).map( function () {
+                                       return $( this ).val();
+                               } ).get();
+                       } else {
+                               return input.val();
+                       }
+               },
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( $input.is( ':radio, :checkbox' ) ) {
-                               return 'checked';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         /**
+                * Update an input's state based on its type.
+                *
+                * @param {jQuery|Element} input
+                * @param {string|boolean|array|*} state
+                * @private
+                */
+               _setInputState: function ( input, state ) {
+                       input = $( input );
+                       if ( input.is( ':radio, :checkbox' ) ) {
+                               input.prop( 'checked', state );
+                       } else if ( input.is( 'select[multiple]' ) ) {
+                               if ( ! $.isArray( state ) ) {
+                                       state = [];
+                               } else {
+                                       // Make sure all state items are strings since the DOM value is a string
+                                       state = _.map( state, function ( value ) {
+                                               return String( value );
+                                       } );
+                               }
+                               input.find( 'option' ).each( function () {
+                                       $( this ).prop( 'selected', -1 !== _.indexOf( state, String( this.value ) ) );
+                               } );
</ins><span class="cx" style="display: block; padding: 0 10px">                         } else {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                return 'value';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         input.val( state );
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><span class="cx" style="display: block; padding: 0 10px">                },
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1016,9 +1047,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        // we know if it got sanitized; if there is no difference in the sanitized value,
</span><span class="cx" style="display: block; padding: 0 10px">                        // then we do not need to touch the UI and mess up the user's ongoing editing.
</span><span class="cx" style="display: block; padding: 0 10px">                        $inputs.each( function() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                var input = $( this ),
-                                       property = self._getInputStatePropertyName( this );
-                               input.data( 'state' + updateNumber, input.prop( property ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $( this ).data( 'state' + updateNumber, self._getInputState( this ) );
</ins><span class="cx" style="display: block; padding: 0 10px">                         } );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( instanceOverride ) {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1071,16 +1100,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                                $inputs.each( function( i ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                                        var $input = $( this ),
</span><span class="cx" style="display: block; padding: 0 10px">                                                                $sanitizedInput = $( $sanitizedInputs[i] ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                                property = self._getInputStatePropertyName( this ),
</del><span class="cx" style="display: block; padding: 0 10px">                                                                 submittedState, sanitizedState, canUpdateState;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                                        submittedState = $input.data( 'state' + updateNumber );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        sanitizedState = $sanitizedInput.prop( property );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 sanitizedState = self._getInputState( $sanitizedInput );
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         $input.data( 'sanitized', sanitizedState );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        canUpdateState = ( submittedState !== sanitizedState && ( args.ignoreActiveElement || ! $input.is( document.activeElement ) )   );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 canUpdateState = ( ! _.isEqual( submittedState, sanitizedState ) && ( args.ignoreActiveElement || ! $input.is( document.activeElement ) ) );
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         if ( canUpdateState ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                                $input.prop( property, sanitizedState );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                         self._setInputState( $input, sanitizedState );
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         }
</span><span class="cx" style="display: block; padding: 0 10px">                                                } );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre>
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