Switch the manage popup title according to the button pressed

Fixes #1755

modules/backend/behaviors/RelationController.php

@@ -130,6 +130,11 @@ class RelationController extends ControllerBehavior
      */
     protected $viewMode;
 
+    /**
+     * @var string The title used for the manage popup.
+     */
+    protected $manageTitle;
+
     /**
      * @var string Management of relation as list, form, or pivot.
      */
@@ -220,6 +225,7 @@ class RelationController extends ControllerBehavior
     {
         $this->vars['relationManageId'] = $this->manageId;
         $this->vars['relationLabel'] = $this->config->label ?: $this->field;
+        $this->vars['relationManageTitle'] = $this->manageTitle;
         $this->vars['relationField'] = $this->field;
         $this->vars['relationType'] = $this->relationType;
         $this->vars['relationSearchWidget'] = $this->searchWidget;
@@ -309,6 +315,7 @@ class RelationController extends ControllerBehavior
         $this->toolbarButtons = $this->evalToolbarButtons();
         $this->viewMode = $this->evalViewMode();
         $this->manageMode = $this->evalManageMode();
+        $this->manageTitle = $this->evalManageTitle();
         $this->manageId = post('manage_id');
         $this->foreignId = post('foreign_id');
 
@@ -1315,6 +1322,39 @@ class RelationController extends ControllerBehavior
         }
     }
 
+    /**
+     * Determine the management mode popup title.
+     * @return string
+     */
+    protected function evalManageTitle()
+    {
+        if ($customTitle = $this->getConfig('manage[title]')) {
+            return $customTitle;
+        }
+
+        switch ($this->manageMode) {
+            case 'list':
+                if ($this->eventTarget == 'button-link') {
+                    return 'backend::lang.relation.add_a_link';
+                }
+                else {
+                    return 'backend::lang.relation.add_a_new';
+                }
+            break;
+            case 'form':
+                if ($this->readOnly) {
+                    return 'backend::lang.relation.preview_name';
+                }
+                else {
+                    return 'backend::lang.relation.update_name';
+                }
+            break;
+            case 'pivot':
+                return 'backend::lang.relation.add_a_new';
+            break;
+        }
+    }
+
     /**
      * Determine the management mode based on the relation type and settings.
      * @return string

modules/backend/behaviors/UserPreferencesModel.php

@@ -18,7 +18,7 @@ use Backend\Models\UserPreferences;
  */
 class UserPreferencesModel extends SettingsModel
 {
-    private static $instances = [];
+    protected static $instances = [];
 
     /**
      * Constructor

modules/backend/behaviors/relationcontroller/partials/_manage_form.htm

@@ -12,11 +12,7 @@
             <div class="modal-header">
                 <button type="button" class="close" data-dismiss="popup">&times;</button>
                 <h4 class="modal-title">
-                    <?php if ($this->readOnly): ?>
-                        <?= e(trans('backend::lang.relation.preview_name', ['name' => trans($relationLabel)])) ?>
-                    <?php else: ?>
-                        <?= e(trans('backend::lang.relation.update_name', ['name' => trans($relationLabel)])) ?>
-                    <?php endif ?>
+                    <?= e(trans($relationManageTitle, ['name' => trans($relationLabel)])) ?>
                 </h4>
             </div>
 

modules/backend/behaviors/relationcontroller/partials/_manage_list.htm

@@ -2,7 +2,7 @@
     <?= Form::open() ?>
         <div class="modal-header">
             <button type="button" class="close" data-dismiss="popup">&times;</button>
-            <h4 class="modal-title"><?= e(trans('backend::lang.relation.add_a_new', [
+            <h4 class="modal-title"><?= e(trans($relationManageTitle, [
                 'name' => trans($relationLabel)
             ])) ?></h4>
         </div>

modules/backend/behaviors/relationcontroller/partials/_manage_pivot.htm

@@ -2,7 +2,7 @@
     <?= Form::open() ?>
         <div class="modal-header">
             <button type="button" class="close" data-dismiss="popup">&times;</button>
-            <h4 class="modal-title"><?= e(trans('backend::lang.relation.add_a_new', ['name'=>trans($relationLabel)])) ?></h4>
+            <h4 class="modal-title"><?= e(trans($relationManageTitle, ['name'=>trans($relationLabel)])) ?></h4>
         </div>
         <?php if (!$relationSearchWidget): ?>
             <div class="modal-body">

modules/backend/lang/en/lang.php

@@ -228,6 +228,7 @@ return [
         'add' => 'Add',
         'add_selected' => 'Add selected',
         'add_a_new' => 'Add a new :name',
+        'add_a_link' => 'Link a new :name',
         'link_selected' => 'Link selected',
         'link_a_new' => 'Link a new :name',
         'cancel' => 'Cancel',