From 5805ddec5a0e9cf31edd1b4139b5d705a303c33b Mon Sep 17 00:00:00 2001
From: flynsarmy <flynsarmy@gmail.com>
Date: Sat, 7 Feb 2015 19:52:34 +1000
Subject: [PATCH] Add support for removing form fields

---
 modules/backend/classes/FormTabs.php | 20 ++++++++++++++++++++
 modules/backend/widgets/Form.php     | 21 +++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/modules/backend/classes/FormTabs.php b/modules/backend/classes/FormTabs.php
index 0dab4e06a..4ad092e8a 100644
--- a/modules/backend/classes/FormTabs.php
+++ b/modules/backend/classes/FormTabs.php
@@ -84,6 +84,26 @@ class FormTabs implements IteratorAggregate, ArrayAccess
         }
     }
 
+    /**
+     * Remove a field from all tabs by name.
+     * @param string    $name
+     * @return True on success, False on failure
+     */
+    public function removeField($name)
+    {
+        foreach ($this->fields as $tab => $fields) {
+            foreach ($fields as $fieldName => $field) {
+                if ($fieldName == $name) {
+                    unset($this->fields[$tab][$fieldName]);
+
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
     /**
      * Add a field to the collection of tabs.
      * @param string    $name
diff --git a/modules/backend/widgets/Form.php b/modules/backend/widgets/Form.php
index e289aecc6..d4da58928 100644
--- a/modules/backend/widgets/Form.php
+++ b/modules/backend/widgets/Form.php
@@ -459,6 +459,27 @@ class Form extends WidgetBase
         }
     }
 
+    /**
+     * Programatically remove a field.
+     * @return True on success, False on failure
+     */
+    public function removeField($name)
+    {
+        if (!isset($this->fields[$name])) {
+            return false;
+        }
+
+        // Remove from tabs
+        $this->primaryTabs->removeField($name);
+        $this->secondaryTabs->removeField($name);
+        $this->outsideTabs->removeField($name);
+
+        // Remove from form
+        unset($this->fields[$name]);
+
+        return true;
+    }
+
     /**
      * Programatically add fields, used internally and for extensibility.
      */