Changeset 32809

Timestamp:

06/16/2015 11:12:21 PM (9 years ago)

Author:

azaozz

Message:

Editor: do not reuse the preview tab when the user has navigated away.
See #32588.

Location:

trunk/src/wp-includes

Files:

• default-filters.php (modified) (1 diff)
• functions.php (modified) (1 diff)

trunk/src/wp-includes/default-filters.php

@@ -291 +291 @@
 add_action( 'init', '_show_post_preview' );
 
+// Output JS to reset window.name for previews
+add_action( 'wp_head', 'wp_post_preview_js', 1 );
+
 // Timezone
 add_filter( 'pre_option_gmt_offset','wp_timezone_override_offset' );

trunk/src/wp-includes/functions.php

@@ -4914 +4914 @@
     }
 }
+
+/**
+ * Outputs a small JS snippet on preview tabs/windows to remove `window.name` on unload.
+ * This prevents reusing the same tab for a preview when the user has navigated away.
+ *
+ * @since 4.3.0
+ */
+function wp_post_preview_js() {
+    global $post;
+
+    if ( ! is_preview() || empty( $post ) ) {
+        return;
+    }
+
+    // Has to match the window name used in post_submit_meta_box()
+    $name = 'wp-preview-' . (int) $post->ID;
+
+    ?>
+    <script>
+    ( function() {
+        var query = document.location.search;
+
+        if ( query && query.indexOf( 'preview=true' ) !== -1 ) {
+            window.name = '<?php echo $name; ?>';
+        }
+
+        if ( window.addEventListener ) {
+            window.addEventListener( 'unload', function() { window.name = ''; }, false );
+        }
+    }());
+    </script>
+    <?php
+}