--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/rc_foldersort/rc_foldersort.php	Sun May 27 16:53:20 2018 -0400
@@ -0,0 +1,247 @@
+<?php
+/*
+ */
+
+class rc_foldersort extends rcube_plugin
+{
+    public $task = 'mail|settings';
+
+    private $rc;
+    private $sort_order;
+
+    private $uname;
+    private $debug = false;
+
+    public function init()
+    {
+        $this->rc         = rcube::get_instance();
+        $this->uname      = $this->rc->user->get_username();
+        $userprefs        = $this->rc->user->get_prefs();
+        $this->sort_order = $userprefs['per_folder_sort'];
+        if (!is_array($this->sort_order)) {
+            $this->sort_order = array();
+        }
+
+        $this->rc->output->set_env('per_folder_sort', $this->sort_order);
+
+        if ($this->rc->task == 'settings') {
+            $this->add_hook('folder_form', array($this, 'folder_form_hook'));
+            $this->add_hook('folder_update', array($this, 'folder_update_hook'));
+            $this->add_hook('preferences_list', array($this, 'preferences_list_hook'));
+            $this->add_hook('preferences_save', array($this, 'preferences_save_hook'));
+        }
+
+        if ($this->rc->task == 'mail') {
+            $this->include_script('rc_foldersort.js');
+            $this->register_action('plugin.rc_foldersort_json', array($this, 'sort_json_action'));
+        }
+    }
+
+    public function folder_form_hook($args)
+    {
+        $content = $args['form']['props']['fieldsets']['settings']['content'];
+        $options = $args['options'];
+        $mbox    = $options['name'];
+
+        $cols = array(
+            'from',
+            'to',
+            'subject',
+            'date',
+            'size',
+	    'dates'
+        );
+
+        $folder_sorts = $this->sort_order;
+        if (array_key_exists($mbox, $folder_sorts)) {
+            $folder_sort = $folder_sorts[$mbox];
+        } else if (array_key_exists('default', $folder_sorts)) {
+            $folder_sort = $folder_sorts['default'];
+        } else {
+            $folder_sort = 'date_DESC';
+        }
+
+        list($col, $order) = explode('_', $folder_sort);
+        if ($order != 'DESC' && $order != 'ASC') {
+            $order = 'DESC';
+        }
+
+        if (!in_array($col, $cols)) {
+            $col = 'date';
+        }
+
+        if (is_array($content) && !array_key_exists('_sortcol', $content)) {
+            $folder_sort_col_select = new html_select(array('name' => '_sortcol', 'id' => '_sortcol'));
+            foreach ($cols as $temp_col) {
+                $folder_sort_col_select->add($this->gettext($temp_col), $temp_col);
+            }
+
+            $content['_sortcol'] = array(
+                'label' => $this->gettext('listsorting'),
+                'value' => $folder_sort_col_select->show($col),
+            );
+        }
+
+        if (is_array($content) && !array_key_exists('_sortcol', $options)) {
+            $options['_sortcol'] = $col;
+        }
+
+        if (is_array($content) && !array_key_exists('_sortord', $content)) {
+            $folder_sort_order_select = new html_select(array('name' => '_sortord', 'id' => '_sortord'));
+            $folder_sort_order_select->add($this->gettext('asc'), 'ASC');
+            $folder_sort_order_select->add($this->gettext('desc'), 'DESC');
+            $content['_sortord'] = array(
+                'label' => $this->gettext('listorder'),
+                'value' => $folder_sort_order_select->show($order),
+            );
+        }
+
+        if (is_array($content) && !array_key_exists('_sortord', $options)) {
+            $options['_sortord'] = $order;
+        }
+
+        $args['form']['props']['fieldsets']['settings']['content'] = $content;
+
+        $args['options'] = $options;
+
+        return $args;
+    }
+
+    public function folder_update_hook($args)
+    {
+        $mbox             = $args['record']['name'];
+        $settings         = $args['record']['settings'];
+        $sort_order       = $settings['sort_column'] . '_' . $settings['sort_order'];
+        $cfg_sort         = $this->sort_order;
+        $cfg_sort[$mbox]  = $sort_order;
+        $this->sort_order = $cfg_sort;
+
+        $this->rc->user->save_prefs(array('per_folder_sort' => $this->sort_order));
+        $this->rc->output->set_env('per_folder_sort', $this->sort_order);
+
+        return $args;
+    }
+
+    public function preferences_list_hook($args)
+    {
+        if ($args['section'] == 'mailbox') {
+            $cols = array(
+                'from',
+                'to',
+                'subject',
+                'date',
+                'size',
+		'dates'
+            );
+
+            $folder_sorts = $this->sort_order;
+            if (array_key_exists('default', $folder_sorts)) {
+                $folder_sort = $folder_sorts['default'];
+            } else {
+                $folder_sort = 'date_DESC';
+            }
+
+            list($col, $order) = explode('_', $folder_sort);
+            if ($order != 'DESC' && $order != 'ASC') {
+                $order = 'DESC';
+            }
+
+            if (!in_array($col, $cols)) {
+                $col = 'date';
+            }
+
+            $sort_select_col = new html_select(array('name' => '_default_sort_col', 'id' => '_default_sort_col'));
+            foreach ($cols as $temp_col) {
+                $sort_select_col->add($this->gettext($temp_col), $temp_col);
+            }
+
+            $sort_select_order = new html_select(array('name' => '_default_sort_order', 'id' => '_default_sort_order'));
+            $sort_select_order->add($this->gettext('asc'), 'ASC');
+            $sort_select_order->add($this->gettext('desc'), 'DESC');
+            $sort_options = array(
+                'title' => $this->gettext('listorder'),
+                'content' => $sort_select_col->show($col) . $sort_select_order->show($order),
+            );
+
+            $args['blocks']['main']['options']['listorder'] = $sort_options;
+        }
+
+        return $args;
+    }
+
+    public function preferences_save_hook($args)
+    {
+        if ($args['section'] == 'mailbox') {
+            $folder_sort_col                  = rcube_utils::get_input_value('_default_sort_col', RCUBE_INPUT_POST);
+            $folder_sort_order                = rcube_utils::get_input_value('_default_sort_order', RCUBE_INPUT_POST);
+            $folder_sort                      = $folder_sort_col . '_' . $folder_sort_order;
+            $folder_sorts                     = $this->sort_order;
+            $folder_sorts['default']          = $folder_sort;
+            $args['prefs']['per_folder_sort'] = $folder_sorts;
+        }
+
+        return $args;
+    }
+
+    public function sort_json_action()
+    {
+        $cmd    = rcube_utils::get_input_value('cmd', RCUBE_INPUT_POST);
+        $folder = rcube_utils::get_input_value('folder', RCUBE_INPUT_POST);
+        $col    = rcube_utils::get_input_value('col', RCUBE_INPUT_POST);
+        $order  = rcube_utils::get_input_value('order', RCUBE_INPUT_POST);
+
+        switch ($cmd) {
+            case 'change_session': {
+                $_SESSION['sort_col']   = $col;
+                $_SESSION['sort_order'] = $order;
+            }
+            case 'save_order': {
+                $sort_order          = $this->sort_order;
+                $sort_order[$folder] = $col . "_" . $order;
+                $this->sort_order    = $sort_order;
+
+                $this->rc->user->save_prefs(array('per_folder_sort' => $this->sort_order));
+                $this->rc->output->set_env('per_folder_sort', $this->sort_order);
+                break;
+            }
+        }
+    }
+
+    private function _debug($value, $key = '', $force = false)
+    {
+        if ($this->debug || $force) {
+            $trace           = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);
+            $caller_trace    = $trace[0];
+            $caller_function = $trace[1]['function'];
+            $caller_line     = $caller_trace['line'];
+            $caller_file     = $caller_trace['file'];
+            $caller_file     = preg_replace("|.*/|", "", $caller_file);
+            $str             = sprintf("[%s:%d - %s] ", $caller_file, $caller_line, $caller_function);
+
+            $val_type = gettype($value);
+
+            switch ($val_type) {
+                case "object": {
+                    $old_value = $value;
+                    $value     = get_class($old_value);
+                    $str      .= $key . ' type = ' . $value;
+                    break;
+                }
+                default: {
+                    $old_value = $value;
+                    $value     = var_export($old_value, true);
+                    $str      .= $key. ' = ' .$value;
+                    break;
+                }
+            }
+
+            if ($this->uname) {
+                $str = sprintf("[%s] %s", $this->uname, $str);
+            }
+
+            write_log($this->ID, $str);
+        }
+    }
+
+}
+?>