feat(management) Add support for fixed filter elements

Useful for selection classes mainly, for instance PhoneNumberAttribute
 dialog will now only list phones with a non-empty phone number.
This will also be useful for samba.

issue #5965

ihtml/themes/breezy/management/filter-element-fixed.tpl

+<fieldset><legend>{$NAME}</legend>
+  {foreach from=$INPUTS key="key" item="input"}
+    <label title="{$input.desc|escape}">
+      {if isset($input.icon)}
+        <img src="{$input.icon|escape}" alt=""/>
+      {/if}
+      {$input.name|escape}
+    </label>
+  {/foreach}
+</fieldset>

include/management/class_FixedFilterElement.inc

+<?php
+/*
+  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
+
+  Copyright (C) 2018-2019  FusionDirectory
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+class FixedFilterElement extends FilterElement
+{
+  protected $filter;
+
+  public function __construct (managementFilter $parent, string $filter)
+  {
+    parent::__construct($parent);
+
+    $this->filter = $filter;
+  }
+
+  public function render (): string
+  {
+    $inputs = [
+      [
+        'name'  => $this->filter,
+        'desc'  => $this->filter,
+      ]
+    ];
+    $smarty = get_smarty();
+    $smarty->assign('NAME',   _('Fixed'));
+    $smarty->assign('INPUTS', $inputs);
+    return $smarty->fetch(get_template_path('management/filter-element-fixed.tpl'));
+  }
+
+  public function getFilters (string $type, array &$filters): bool
+  {
+    $filters[] = $this->filter;
+    return FALSE;
+  }
+}

include/simpleplugin/attributes/class_PhoneNumberAttribute.inc

@@ -30,6 +30,12 @@ class phoneSelect extends selectManagement
     ['LinkColumn',       ['attributes' => 'nameAttr',         'label' => 'Name']],
     ['LinkColumn',       ['attributes' => 'telephoneNumber',  'label' => 'Number']],
   ];
+
+  protected function setUpFilter ()
+  {
+    parent::setUpFilter();
+    $this->filter->addElement(new FixedFilterElement($this->filter, '(telephoneNumber=*)'));
+  }
 }
 
 /*!
@@ -141,12 +147,24 @@ class PhoneNumberButtonAttribute extends PhoneNumberAttribute
     }
   }
 
-  function handleDialogResult ($dn, array $attrs)
+  function handleDialogResult ($dn, $entry)
   {
-    if (isset($attrs['telephoneNumber'][0])) {
-      $this->setValue($attrs['telephoneNumber'][0]);
+    if (isset($entry['telephoneNumber'][0])) {
+      $this->setValue($entry['telephoneNumber'][0]);
+    } elseif (isset($entry['telephoneNumber'])) {
+      $this->setValue($entry['telephoneNumber']);
     } else {
       $this->setValue('');
     }
   }
+
+  function getFilterBlackList ()
+  {
+    return [];
+  }
+
+  function getFilterWhiteList ()
+  {
+    return [];
+  }
 }