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<title>[40312] trunk: Customize: Show notice in Widgets panel when there are additional widget areas not rendered in preview.</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/40312">40312</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/40312","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>westonruter</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2017-03-22 19:02:26 +0000 (Wed, 22 Mar 2017)</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: Show notice in Widgets panel when there are additional widget areas not rendered in preview.

This extends the existing behavior which only showed a message only when there were no widget areas rendered in the preview. The number of non-rendered widget areas is indicated. Also removes needles deletion of `wp.customize.Widgets.data.l10n` property which hindered plugins.

See <a href="https://core.trac.wordpress.org/ticket/33567">#33567</a>, <a href="https://core.trac.wordpress.org/ticket/33052">#33052</a>.
Fixes <a href="https://core.trac.wordpress.org/ticket/39087">#39087</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadmincsscustomizecontrolscss">trunk/src/wp-admin/css/customize-controls.css</a></li>
<li><a href="#trunksrcwpadminjscustomizewidgetsjs">trunk/src/wp-admin/js/customize-widgets.js</a></li>
<li><a href="#trunksrcwpincludesclasswpcustomizewidgetsphp">trunk/src/wp-includes/class-wp-customize-widgets.php</a></li>
<li><a href="#trunktestsqunitfixturescustomizewidgetsjs">trunk/tests/qunit/fixtures/customize-widgets.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadmincsscustomizecontrolscss"></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/css/customize-controls.css</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/css/customize-controls.css     2017-03-22 03:51:07 UTC (rev 40311)
+++ trunk/src/wp-admin/css/customize-controls.css       2017-03-22 19:02:26 UTC (rev 40312)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -163,6 +163,15 @@
</span><span class="cx" style="display: block; padding: 0 10px"> #customize-controls .customize-info .customize-panel-description.open + .no-widget-areas-rendered-notice {
</span><span class="cx" style="display: block; padding: 0 10px">        border-top: none;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+.no-widget-areas-rendered-notice {
+       font-style: italic;
+}
+.no-widget-areas-rendered-notice p:first-child {
+       margin-top: 0;
+}
+.no-widget-areas-rendered-notice p:last-child {
+       margin-bottom: 0;
+}
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> #customize-controls .customize-info .customize-section-description {
</span><span class="cx" style="display: block; padding: 0 10px">        margin-bottom: 15px;
</span></span></pre></div>
<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        2017-03-22 03:51:07 UTC (rev 40311)
+++ trunk/src/wp-admin/js/customize-widgets.js  2017-03-22 19:02:26 UTC (rev 40312)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -13,7 +13,6 @@
</span><span class="cx" style="display: block; padding: 0 10px">        // Link settings
</span><span class="cx" style="display: block; padding: 0 10px">        api.Widgets.data = _wpCustomizeWidgetsSettings || {};
</span><span class="cx" style="display: block; padding: 0 10px">        l10n = api.Widgets.data.l10n;
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        delete api.Widgets.data.l10n;
</del><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">         * wp.customize.Widgets.WidgetModel
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1577,36 +1576,84 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        api.Panel.prototype.ready.call( panel );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        panel.deferred.embedded.done(function() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                var panelMetaContainer, noRenderedAreasNotice, shouldShowNotice;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         var panelMetaContainer, noticeContainer, updateNotice, getActiveSectionCount, shouldShowNotice;
</ins><span class="cx" style="display: block; padding: 0 10px">                                 panelMetaContainer = panel.container.find( '.panel-meta' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                noRenderedAreasNotice = $( '<div></div>', {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                               // @todo This should use the Notifications API introduced to panels. See <https://core.trac.wordpress.org/ticket/38794>.
+                               noticeContainer = $( '<div></div>', {
</ins><span class="cx" style="display: block; padding: 0 10px">                                         'class': 'no-widget-areas-rendered-notice'
</span><span class="cx" style="display: block; padding: 0 10px">                                });
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                noRenderedAreasNotice.append( $( '<em></em>', {
-                                       text: l10n.noAreasRendered
-                               } ) );
-                               panelMetaContainer.append( noRenderedAreasNotice );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         panelMetaContainer.append( noticeContainer );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                shouldShowNotice = function() {
-                                       return ( 0 === _.filter( panel.sections(), function( section ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         /**
+                                * Get the number of active sections in the panel.
+                                *
+                                * @return {number} Number of active sidebar sections.
+                                */
+                               getActiveSectionCount = function() {
+                                       return _.filter( panel.sections(), function( section ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                                 return section.active();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        } ).length );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 } ).length;
</ins><span class="cx" style="display: block; padding: 0 10px">                                 };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                /**
+                                * Determine whether or not the notice should be displayed.
+                                *
+                                * @return {boolean}
+                                */
+                               shouldShowNotice = function() {
+                                       var activeSectionCount = getActiveSectionCount();
+                                       if ( 0 === activeSectionCount ) {
+                                               return true;
+                                       } else {
+                                               return activeSectionCount !== api.Widgets.data.registeredSidebars.length;
+                                       }
+                               };
+
+                               /**
+                                * Update the notice.
+                                *
+                                * @returns {void}
+                                */
+                               updateNotice = function() {
+                                       var activeSectionCount = getActiveSectionCount(), message, nonRenderedAreaCount, registeredAreaCount;
+                                       noticeContainer.empty();
+
+                                       registeredAreaCount = api.Widgets.data.registeredSidebars.length;
+                                       if ( activeSectionCount !== registeredAreaCount ) {
+
+                                               if ( 0 !== activeSectionCount ) {
+                                                       nonRenderedAreaCount = registeredAreaCount - activeSectionCount;
+                                                       message = ( 1 === nonRenderedAreaCount ? l10n.someAreasShown.singular : l10n.someAreasShown.plural ).replace( '%d', nonRenderedAreaCount );
+                                               } else {
+                                                       message = ( 1 === registeredAreaCount ? l10n.noAreasShown.singular : l10n.noAreasShown.plural ).replace( '%d', registeredAreaCount );
+                                               }
+
+                                               noticeContainer.append( $( '<p></p>', {
+                                                       text: message
+                                               } ) );
+                                               noticeContainer.append( $( '<p></p>', {
+                                                       text: l10n.navigatePreview
+                                               } ) );
+                                       }
+                               };
+                               updateNotice();
+
</ins><span class="cx" style="display: block; padding: 0 10px">                                 /*
</span><span class="cx" style="display: block; padding: 0 10px">                                 * Set the initial visibility state for rendered notice.
</span><span class="cx" style="display: block; padding: 0 10px">                                 * Update the visibility of the notice whenever a reflow happens.
</span><span class="cx" style="display: block; padding: 0 10px">                                 */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                noRenderedAreasNotice.toggle( shouldShowNotice() );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         noticeContainer.toggle( shouldShowNotice() );
</ins><span class="cx" style="display: block; padding: 0 10px">                                 api.previewer.deferred.active.done( function () {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        noRenderedAreasNotice.toggle( shouldShowNotice() );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 noticeContainer.toggle( shouldShowNotice() );
</ins><span class="cx" style="display: block; padding: 0 10px">                                 });
</span><span class="cx" style="display: block; padding: 0 10px">                                api.bind( 'pane-contents-reflowed', function() {
</span><span class="cx" style="display: block; padding: 0 10px">                                        var duration = ( 'resolved' === api.previewer.deferred.active.state() ) ? 'fast' : 0;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        updateNotice();
</ins><span class="cx" style="display: block; padding: 0 10px">                                         if ( shouldShowNotice() ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                noRenderedAreasNotice.slideDown( duration );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         noticeContainer.slideDown( duration );
</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">-                                                noRenderedAreasNotice.slideUp( duration );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         noticeContainer.slideUp( duration );
</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></div>
<a id="trunksrcwpincludesclasswpcustomizewidgetsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/class-wp-customize-widgets.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-customize-widgets.php      2017-03-22 03:51:07 UTC (rev 40311)
+++ trunk/src/wp-includes/class-wp-customize-widgets.php        2017-03-22 19:02:26 UTC (rev 40312)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -732,10 +732,27 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                'error'            => __( 'An error has occurred. Please reload the page and try again.' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'widgetMovedUp'    => __( 'Widget moved up' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'widgetMovedDown'  => __( 'Widget moved down' ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                'noAreasRendered'  => __( 'There are no widget areas on the page shown, however other pages in this theme do have them.' ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         'navigatePreview'  => __( 'You can navigate to other pages on your site while using the Customizer to view and edit the widgets displayed on those pages.' ),
+                               'someAreasShown'   => wp_array_slice_assoc(
+                                       /* translators: placeholder is the number of other widget areas registered */
+                                       _n_noop(
+                                               'Your theme has %d other widget area, but this particular page doesn\'t display it.',
+                                               'Your theme has %d other widget areas, but this particular page doesn\'t display them.'
+                                       ),
+                                       array( 'singular', 'plural' )
+                               ),
+                               'noAreasShown'    => wp_array_slice_assoc(
+                                       /* translators: placeholder is the total number of widget areas registered */
+                                       _n_noop(
+                                               'Your theme has %d widget area, but this particular page doesn\'t display it.',
+                                               'Your theme has %d widget areas, but this particular page doesn\'t display them.'
+                                       ),
+                                       array( 'singular', 'plural' )
+                               ),
</ins><span class="cx" style="display: block; padding: 0 10px">                                 'reorderModeOn'    => __( 'Reorder mode enabled' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'reorderModeOff'   => __( 'Reorder mode closed' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'reorderLabelOn'   => esc_attr__( 'Reorder widgets' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                /* translators: placeholder is the count for the number of widgets found */
</ins><span class="cx" style="display: block; padding: 0 10px">                                 'widgetsFound'     => __( 'Number of widgets found: %d' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'noWidgetsFound'   => __( 'No widgets found.' ),
</span><span class="cx" style="display: block; padding: 0 10px">                        ),
</span></span></pre></div>
<a id="trunktestsqunitfixturescustomizewidgetsjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/qunit/fixtures/customize-widgets.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/qunit/fixtures/customize-widgets.js   2017-03-22 03:51:07 UTC (rev 40311)
+++ trunk/tests/qunit/fixtures/customize-widgets.js     2017-03-22 19:02:26 UTC (rev 40312)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -46,13 +46,27 @@
</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">        'l10n': {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                'error': 'An error has occurred. Please reload the page and try again.',
+               'navigatePreview': 'You can navigate to other pages on your site while using the Customizer to view and edit the widgets displayed on those pages.',
+               'noAreasShown': {
+                       'plural': 'Your theme has %d widget areas, but this particular page doesn\'t display them.',
+                       'singular': 'Your theme has %d widget area, but this particular page doesn\'t display it.'
+               },
+               'noWidgetsFound': 'No widgets found.',
+               'removeBtnLabel': 'Remove',
+               'removeBtnTooltip': 'Trash widget by moving it to the inactive widgets sidebar.',
+               'reorderLabelOn': 'Reorder widgets',
+               'reorderModeOff': 'Reorder mode closed',
+               'reorderModeOn': 'Reorder mode enabled',
</ins><span class="cx" style="display: block; padding: 0 10px">                 'saveBtnLabel': 'Apply',
</span><span class="cx" style="display: block; padding: 0 10px">                'saveBtnTooltip': 'Save and preview changes before publishing them.',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                'removeBtnLabel': 'Remove',
-               'removeBtnTooltip': 'Trash widget by moving it to the inactive widgets sidebar.',
-               'error': 'An error has occurred. Please reload the page and try again.',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         'someAreasShown': {
+                       'plural': 'Your theme has %d other widget areas, but this particular page doesn\'t display them.',
+                       'singular': 'Your theme has %d other widget area, but this particular page doesn\'t display it.'
+               },
+               'widgetMovedDown': 'Widget moved down',
</ins><span class="cx" style="display: block; padding: 0 10px">                 'widgetMovedUp': 'Widget moved up',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                'widgetMovedDown': 'Widget moved down'
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         'widgetsFound': 'Number of widgets found: %d'
</ins><span class="cx" style="display: block; padding: 0 10px">         },
</span><span class="cx" style="display: block; padding: 0 10px">        'tpl': {
</span><span class="cx" style="display: block; padding: 0 10px">                'widgetReorderNav': '<div class="widget-reorder-nav"><span class="move-widget" tabindex="0">Move to another area&hellip;</span><span class="move-widget-down" tabindex="0">Move down</span><span class="move-widget-up" tabindex="0">Move up</span></div>',
</span></span></pre>
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