Configuration page patch.

Add the ability to remove orphaned data from the configuration file.

Author: Maikuolan

assets/default/_config.html

@@ -14,14 +14,15 @@
           <tr>
             <td class="ng1">
               <div class="s">{tip_see_the_documentation}<hr /><em>{label_active_config_file} <span class="txtRd">{ActiveConfigFile}</span></em><hr /></div>
-              <div class="bNav"><input type="submit" value="{field_update}" /></div>
+              <div class="bNav">
+                <input type="submit" value="{field_update}" /><br />
+                <br />
+                <input type="checkbox" name="orphaned" id="orphaned" class="auto" /><label class="s" for="orphaned">{checkbox_delete_orphaned_values}</label>
+              </div>
             </td>
           </tr>
         </table>
 {ConfigFields}
-        <table>
-          <tr><td class="ng1"><div class="bNav"><input type="submit" value="{field_update}" /></div></td></tr>
-        </table>
       </form>
     </td>
 </tr>

assets/fullmoon/_config.html

@@ -9,10 +9,13 @@
       <tr>
         <td class="ng1">
           <div class="s">{tip_see_the_documentation}<hr /><em>{label_active_config_file} <span class="txtRd">{ActiveConfigFile}</span></em><hr /></div>
-          <div class="bNav"><input type="submit" value="{field_update}" /></div>
+          <div class="bNav">
+            <input type="submit" value="{field_update}" /><br />
+            <br />
+            <input type="checkbox" name="orphaned" id="orphaned" class="auto" /><label class="s" for="orphaned">{checkbox_delete_orphaned_values}</label>
+          </div>
         </td>
       </tr>
     </table>
 {ConfigFields}
-    <table><tr><td class="ng1"><div class="bNav"><input type="submit" value="{field_update}" /></div></td></tr></table>
   </form>

src/FrontEnd.php

@@ -1038,6 +1038,11 @@ public function view(string $Page = ''): void
             /** For required extensions, classes, etc. */
             $ReqsLookupCache = [];
 
+            /** Rebuilding in order to strip out orphaned data. */
+            if (isset($_POST['orphaned'])) {
+                $NewConfig = [];
+            }
+
             /** Iterate through configuration defaults. */
             foreach ($this->Loader->ConfigurationDefaults as $CatKey => $CatValue) {
                 if (!is_array($CatValue)) {
@@ -1553,6 +1558,14 @@ public function view(string $Page = ''): void
                         $this->Loader->L10N->Data,
                         $this->Loader->parse($ThisDir, $ConfigurationRow)
                     );
+
+                    /** Rebuilding in order to strip out orphaned data. */
+                    if (isset($NewConfig)) {
+                        if (!isset($NewConfig[$CatKey])) {
+                            $NewConfig[$CatKey] = [];
+                        }
+                        $NewConfig[$CatKey][$DirKey] = $this->Loader->Configuration[$CatKey][$DirKey];
+                    }
                 }
                 $CatKeyFriendly = $this->Loader->L10N->getString('config_' . $CatKey . '_label') ?: $CatKey;
                 $FE['Indexes'] .= sprintf(
@@ -1567,7 +1580,17 @@ public function view(string $Page = ''): void
             unset($ReqsLookupCache);
 
             /** Update the currently active configuration file if any changes were made. */
-            if ($ConfigurationModified) {
+            if ($ConfigurationModified || isset($NewConfig)) {
+                if (isset($NewConfig)) {
+                    foreach ($this->Loader->Configuration as $CatKey => $CatValue) {
+                        if (substr($CatKey, 0, 5) !== 'user.') {
+                            continue;
+                        }
+                        $NewConfig[$CatKey] = $CatValue;
+                    }
+                    $this->Loader->Configuration = $NewConfig;
+                    unset($NewConfig);
+                }
                 if ($this->Loader->updateConfiguration()) {
                     $FE['state_msg'] = $this->Loader->L10N->getString('response_configuration_updated');
                 } else {