From 19ad6b15e83f8969432ec171f585f552802b8576 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Tue, 12 Sep 2017 18:06:29 +0200
Subject: [PATCH] Add (unified) get_next/get_prev/get_single_selection methods
 for list and treelist widgets

---
 program/js/list.js     | 16 ++++++++++++++++
 program/js/treelist.js | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)

diff --git a/program/js/list.js b/program/js/list.js
index b07fc5efc..964815607 100644
--- a/program/js/list.js
+++ b/program/js/list.js
@@ -951,6 +951,22 @@ get_last_row: function()
   return null;
 },
 
+get_next: function()
+{
+  var row;
+  if (row = this.get_next_row()) {
+    return row.uid;
+  }
+},
+
+get_prev: function()
+{
+  var row;
+  if (row = this.get_prev_row()) {
+    return row.uid;
+  }
+},
+
 row_tagname: function()
 {
   var row_tagnames = { table:'tr', ul:'li', '*':'div' };
diff --git a/program/js/treelist.js b/program/js/treelist.js
index 2f70e84ff..a3a4011e9 100644
--- a/program/js/treelist.js
+++ b/program/js/treelist.js
@@ -95,6 +95,9 @@ function rcube_treelist_widget(node, p)
   this.get_item = get_item;
   this.get_node = get_node;
   this.get_selection = get_selection;
+  this.get_next = get_next;
+  this.get_prev = get_prev;
+  this.get_single_selection = get_selection;
   this.is_search = is_search;
   this.reset_search = reset_search;
 
@@ -921,6 +924,44 @@ function rcube_treelist_widget(node, p)
   }
 
 
+  function get_next()
+  {
+    var node, child;
+    if (selection && (node = id2dom(selection))) {
+      child = node.children('ul').children('li:first');
+      if (child.length) {
+        return dom2id(child);
+      }
+
+      node = node.next();
+      if (node.length) {
+        return dom2id(node);
+      }
+    }
+  }
+
+  function get_prev()
+  {
+    var node, prev, child;
+    if (selection && (node = id2dom(selection))) {
+      prev = node.prev();
+      child = prev.find('li:last');
+
+      if (child.length) {
+        return dom2id(child);
+      }
+
+      if (prev.length) {
+        return dom2id(prev);
+      }
+
+      node = node.parent().parent();
+      if (node.length && node.is('li')) {
+        return dom2id(node);
+      }
+    }
+  }
+
   ///// drag & drop support
 
   /**