API CHANGE: Created GridFieldAddNewButton, replacing the one that was previously hardcoded in GridFieldToolbarHeader

forms/gridfield/GridFieldAddNewButton.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * This component provides a button for opening the add new form provided by {@link GridFieldDetailForm}.
+ *
+ * @package sapphire
+ * @subpackage gridfield
+ */
+class GridFieldAddNewButton implements GridField_HTMLProvider {
+	protected $targetFragment;
+	
+	public function __construct($targetFragment = 'before') {
+		$this->targetFragment = $targetFragment;
+	}
+	
+	public function getHTMLFragments($gridField) {
+		$data = new ArrayData(array(
+			'NewLink' => Controller::join_links($gridField->Link('item'), 'new'),
+		));
+		return array(
+			$this->targetFragment => $data->renderWith('GridFieldAddNewbutton'),
+		);
+	}
+
+}

templates/Includes/GridFieldAddNewButton.ss

@@ -0,0 +1 @@
+<a href="$NewLink" class="action ss-ui-action-constructive ss-ui-button ui-button ui-widget ui-state-default ui-corner-all new new-link" data-icon="add"><% _t('GridField.AddNew', 'Add New') %></a>