From c425313ae61b749f025352547471a168361b1464 Mon Sep 17 00:00:00 2001
From: qianlifeng <qianlf20082163.com>
Date: Wed, 19 Feb 2014 23:42:21 +0800
Subject: [PATCH] Fix title aligment issue when subtitle is empty.

---
 Wox/ResultPanel.xaml                          |  6 ++---
 Wox/StringNullOrEmptyToVisibilityConverter.cs | 26 +++++++++++++++++++
 Wox/Wox.csproj                                |  1 +
 3 files changed, 30 insertions(+), 3 deletions(-)
 create mode 100644 Wox/StringNullOrEmptyToVisibilityConverter.cs

diff --git a/Wox/ResultPanel.xaml b/Wox/ResultPanel.xaml
index 42806e17d4..b68df11cf2 100644
--- a/Wox/ResultPanel.xaml
+++ b/Wox/ResultPanel.xaml
@@ -37,11 +37,11 @@
                         </Image>
                         <Grid Margin="5 0 5 0" Grid.Column="1">
                             <Grid.RowDefinitions>
-                                <RowDefinition Height="*"></RowDefinition>
-                                <RowDefinition x:Name="SubTitleRowDefinition"></RowDefinition>
+                                <RowDefinition></RowDefinition>
+                                <RowDefinition Height="Auto" x:Name="SubTitleRowDefinition"></RowDefinition>
                             </Grid.RowDefinitions>
                             <TextBlock Style="{DynamicResource ItemTitleStyle}" VerticalAlignment="Center" x:Name="tbTitle" Text="{Binding Title}"></TextBlock>
-                            <TextBlock Style="{DynamicResource ItemSubTitleStyle}" Grid.Row="1" x:Name="tbSubTitle" Text="{Binding SubTitle}"></TextBlock>
+                            <TextBlock Style="{DynamicResource ItemSubTitleStyle}" Visibility="{Binding SubTitle, Converter={wox:StringNullOrEmptyToVisibilityConverter}}" Grid.Row="1" x:Name="tbSubTitle" Text="{Binding SubTitle}"></TextBlock>
                         </Grid>
                     </Grid>
                 </DataTemplate>
diff --git a/Wox/StringNullOrEmptyToVisibilityConverter.cs b/Wox/StringNullOrEmptyToVisibilityConverter.cs
new file mode 100644
index 0000000000..8ed4b71c86
--- /dev/null
+++ b/Wox/StringNullOrEmptyToVisibilityConverter.cs
@@ -0,0 +1,26 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace Wox
+{
+    public class StringNullOrEmptyToVisibilityConverter : MarkupExtension, IValueConverter
+    {
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return string.IsNullOrEmpty(value as string) ? Visibility.Collapsed : Visibility.Visible;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return null;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Wox/Wox.csproj b/Wox/Wox.csproj
index 0580c2c3b2..8b6a91e461 100644
--- a/Wox/Wox.csproj
+++ b/Wox/Wox.csproj
@@ -144,6 +144,7 @@
     <Compile Include="SettingWindow.xaml.cs">
       <DependentUpon>SettingWindow.xaml</DependentUpon>
     </Compile>
+    <Compile Include="StringNullOrEmptyToVisibilityConverter.cs" />
     <Compile Include="WebSearchSetting.xaml.cs">
       <DependentUpon>WebSearchSetting.xaml</DependentUpon>
     </Compile>