FIX Improve GridFieldViewButton to work with new Archive Admin (#8240)

* Add gridfield restore action, enable view button in action menu

* Abstract restore action and create test

* Use more appropriate canRestoreToDraft and isArchived, move translations

* Use Hierarchy to determine if a record should be restored to root

* Move restore action to versioned

lang/en.yml

@@ -97,6 +97,8 @@ en:
     Save: Save
   SilverStripe\Forms\GridField\GridFieldEditButton:
     EDIT: Edit
+  SilverStripe\Forms\GridField\GridFieldViewButton:
+    VIEW: View
   SilverStripe\Forms\GridField\GridFieldGroupDeleteAction:
     UnlinkSelfFailure: 'Cannot remove yourself from this group, you will lose admin rights'
   SilverStripe\Forms\GridField\GridFieldPaginator:

src/Forms/GridField/GridFieldViewButton.php

@@ -11,8 +11,41 @@ use SilverStripe\View\SSViewer;
  * disabled by default and intended for use in readonly {@link GridField}
  * instances.
  */
-class GridFieldViewButton implements GridField_ColumnProvider
+class GridFieldViewButton implements GridField_ColumnProvider, GridField_ActionMenuLink
 {
+    /**
+     * @inheritdoc
+     */
+    public function getTitle($gridField, $record, $columnName)
+    {
+        return _t(__CLASS__ . '.VIEW', "View");
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getGroup($gridField, $record, $columnName)
+    {
+        return GridField_ActionMenuItem::DEFAULT_GROUP;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getExtraData($gridField, $record, $columnName)
+    {
+        return [
+            "classNames" => "font-icon-eye action-detail view-link"
+        ];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getUrl($gridField, $record, $columnName)
+    {
+        return Controller::join_links($gridField->Link('item'), $record->ID, 'view');
+    }
 
     public function augmentColumns($field, &$columns)
     {

templates/SilverStripe/Forms/GridField/GridFieldViewButton.ss

@@ -1,3 +1,3 @@
-<a class="grid-field__icon-action font-icon-right-open btn--icon-large action action-detail view-link" href="$Link">
+<a class="grid-field__icon-action font-icon-right-open btn--icon-large action action-detail view-link action-menu--handled" href="$Link">
     <span class="sr-only">View</span>
 </a>