From 798faff7b28255a08fac4c163ecd13f4f7dbb983 Mon Sep 17 00:00:00 2001
From: Yeechan Lu <wz.bluesnow@gmail.com>
Date: Mon, 17 Mar 2014 03:52:52 +0800
Subject: [PATCH] Add support for PageUp & PageDown

---
 Wox/MainWindow.xaml.cs  | 12 ++++++++++++
 Wox/ResultPanel.xaml.cs | 22 ++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/Wox/MainWindow.xaml.cs b/Wox/MainWindow.xaml.cs
index f0cfdb5916..e268f2b1d8 100644
--- a/Wox/MainWindow.xaml.cs
+++ b/Wox/MainWindow.xaml.cs
@@ -315,6 +315,18 @@ namespace Wox
                     e.Handled = true;
                     break;
 
+                case Key.PageDown:
+                    resultCtrl.SelectNextPage();
+                    toolTip.IsOpen = false;
+                    e.Handled = true;
+                    break;
+
+                case Key.PageUp:
+                    resultCtrl.SelectPrevPage();
+                    toolTip.IsOpen = false;
+                    e.Handled = true;
+                    break;
+
                 case Key.Enter:
                     AcceptSelect(resultCtrl.AcceptSelect());
                     e.Handled = true;
diff --git a/Wox/ResultPanel.xaml.cs b/Wox/ResultPanel.xaml.cs
index 8ae0cf370b..273e003d0e 100644
--- a/Wox/ResultPanel.xaml.cs
+++ b/Wox/ResultPanel.xaml.cs
@@ -162,5 +162,27 @@ namespace Wox
                 OnOnMouseClickItem(item.DataContext as Result);
             }
         }
+
+        public void SelectNextPage()
+        {
+            int index = lbResults.SelectedIndex;
+            index += 5;
+            if (index >= lbResults.Items.Count)
+            {
+                index = lbResults.Items.Count - 1;
+            }
+            Select(index);
+        }
+
+        public void SelectPrevPage()
+        {
+            int index = lbResults.SelectedIndex;
+            index -= 5;
+            if (index < 0)
+            {
+                index = 0;
+            }
+            Select(index);
+        }
     }
 }
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