Cacher is the code snippet organizer for pro developers

<?php
/**
* Gravity Forms Field Info Tab
* http://gravitywiz.com 
* 
* Adds a summary of your fields as a tab on the form settings screen; includes field ID, label and field type.
* 
*/
class GWFieldInfo {
    
    public function __construct() {
        
        add_filter( 'gform_form_settings_menu', array( $this, 'my_custom_form_settings_menu_item' ) );
        add_action( 'gform_form_settings_page_gw_field_info', array( $this, 'my_custom_form_settings_page' ) );
        
    }
    
    public function my_custom_form_settings_menu_item( $menu_items ) {
        
        $menu_items[] = array(
            'name' => 'gw_field_info',
            'label' => __( 'Field Info' )
        );
        
        return $menu_items;
    }
    
    public function my_custom_form_settings_page() {
        
        $tabs = $this->my_custom_form_settings_menu_item( array() );
        $current_tab = $tabs[0];
        
        GFFormSettings::page_header( $current_tab['label'] );
        
        $form = GFFormsModel::get_form_meta( rgget( 'id' ) );
        $inputs = array();
        
        foreach( $form['fields'] as $field ) {
            
            $type = $field['type'];
            $input_type = GFFormsModel::get_input_type( $field );
            
            $label = GFCommon::get_label( $field );
            if( ! $label )
                $label = '<span class="no-label">' . __( 'No label' ) . '</span>';
            
            $label .= ' <span class="input-type">' . GFCommon::get_field_type_title( $input_type ) . '</span>';
            
            if( $type != $input_type )
                $label .= ' <span class="type">' . GFCommon::get_field_type_title( $type ) . '</span>';
            
            array_push( $inputs, (object) array( 
                'id' => $field['id'], 
                'parent' => 0, 
                'label' => $label
            ) );
            
            if( ! is_array( $field['inputs'] ) )
                continue;
            
            foreach( $field['inputs'] as $input ) {
                array_push( $inputs, (object) array( 
                    'id' => $input['id'], 
                    'parent' => $field['id'],
                    'label' => GFCommon::get_label( $field, $input['id'], true )
                ) );
            }
            
        }

        $walker = new Walker_GWFieldInfo();
        
        ?>
        
        <style type="text/css">
        
        #gwfi-fields { border-top: 1px solid #eee; }
        #gwfi-fields li { margin: 0; border-bottom: 1px solid #eee; line-height: 2; padding: 3px 10px; }
        #gwfi-fields li:nth-child(odd) { background-color: #f7f7f7; }
        #gwfi-fields li:nth-child(even) li { background-color: #fff; }
        #gwfi-fields ul { margin: 3px -10px -4px; border-top: 1px solid #eee; }
        #gwfi-fields ul li { xpadding-left: 50px; }
        
        #gwfi-fields span.gwfi-id { width: 40px; display: inline-block; color: #555; font-weight: bold; }
        #gwfi-fields ul span.gwfi-id { font-weight: normal; }
        #gwfi-fields ul span.gwfi-label:before { content: "\2014"; padding-right: 8px; color: #999; }
        
        #gwfi-fields span.type,
        #gwfi-fields span.input-type { color: #888; display: inline-block; float: right; font-size: 11px; 
            padding: 2px 0 0; text-transform: uppercase; }
            
            #gwfi-fields span.type:after { content: "/"; padding: 0 5px; }
            
        #gwfi-fields span.no-label { color: #aaa; font-style: italic; }
        
        </style>
        
        <ul id="gwfi-fields">
            <?php echo $walker->walk( $inputs, 2 ); ?>
        </ul>
        
        <?php
        
        GFFormSettings::page_footer();
        
    }
    
}

class Walker_GWFieldInfo extends Walker {
    
    var $tree_type = false;
    var $db_fields = array( 'parent' => 'parent', 'id' => 'id' );
    
    function start_lvl( &$output, $depth = 0, $args = array() ) {
        $output .= '<ul>';
    }
    
    function end_lvl( &$output, $depth = 0, $args = array() ) {
        $output .= '</ul>';
    }
    
    function start_el( &$output, $object, $depth = 0, $args = array(), $current_object_id = 0 ) {
        $output .= '<li id="gwfi-row-' . $object->id . '"><span class="gwfi-id">' . $object->id . '</span><span class="gwfi-label">' . $object->label . '</span>';
    }
    
    function end_el( &$output, $object, $depth = 0, $args = array(), $current_object_id = 0 ) {
        $output .= '</li>';
    }
    
}

new GWFieldInfo();