Using WPToolkit LongListSelector

15 files changed, 258 insertions, 115 deletions

diff --git a/Juick/App.xaml.cs b/Juick/App.xaml.cs
index 194e6fe..e20feec 100644
--- a/Juick/App.xaml.cs
+++ b/Juick/App.xaml.cs
@@ -11,6 +11,10 @@ namespace Juick
 {

     public partial class App : Application

     {

+        public void NavigateTo(Uri param) {

+            var current = ((App)App.Current).RootFrame;

+            current.Navigate(param);

+        }

         private static ViewModelBase _myfeed = null;

 

         /// <summary>

diff --git a/Juick/Classes/DelegateCommand.cs b/Juick/Classes/DelegateCommand.cs
index cc7adcd..40256e5 100644
--- a/Juick/Classes/DelegateCommand.cs
+++ b/Juick/Classes/DelegateCommand.cs
@@ -5,10 +5,10 @@ namespace Juick.Classes
 {
     public class DelegateCommand : ICommand
     {
-        readonly Action action;
+        readonly Action<object> action;
         readonly Func<bool> canExecute;
 
-        public DelegateCommand(Action execute, Func<bool> canExecute)
+        public DelegateCommand(Action<object> execute, Func<bool> canExecute)
         {
             this.action = execute;
             this.canExecute = canExecute;
@@ -23,7 +23,7 @@ namespace Juick.Classes
 
         public void Execute(object parameter)
         {
-            action();
+            action(parameter);
         }
 
         public void NotifyCanExecuteChanged()
diff --git a/Juick/Classes/InvokeDelegateCommandAction.cs b/Juick/Classes/InvokeDelegateCommandAction.cs
new file mode 100644
index 0000000..24861cf
--- /dev/null
+++ b/Juick/Classes/InvokeDelegateCommandAction.cs
@@ -0,0 +1,151 @@
+using System;
+using System.Net;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Documents;
+using System.Windows.Ink;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+using System.Windows.Shapes;
+using System.Windows.Interactivity;
+using System.Reflection;
+using System.Linq;
+
+namespace Juick.Classes
+{
+    public sealed class InvokeDelegateCommandAction : TriggerAction<DependencyObject>
+    {
+        /// <summary>
+        ///
+        /// </summary>
+        public static readonly DependencyProperty CommandParameterProperty =
+            DependencyProperty.Register("CommandParameter", typeof(object), typeof(InvokeDelegateCommandAction), null);
+
+        /// <summary>
+        ///
+        /// </summary>
+        public static readonly DependencyProperty CommandProperty = DependencyProperty.Register(
+            "Command", typeof(ICommand), typeof(InvokeDelegateCommandAction), null);
+
+        /// <summary>
+        ///
+        /// </summary>
+        public static readonly DependencyProperty InvokeParameterProperty = DependencyProperty.Register(
+            "InvokeParameter", typeof(object), typeof(InvokeDelegateCommandAction), null);
+
+        private string commandName;
+
+        /// <summary>
+        ///
+        /// </summary>
+        public object InvokeParameter
+        {
+            get
+            {
+                return this.GetValue(InvokeParameterProperty);
+            }
+            set
+            {
+                this.SetValue(InvokeParameterProperty, value);
+            }
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        public ICommand Command
+        {
+            get
+            {
+                return (ICommand)this.GetValue(CommandProperty);
+            }
+            set
+            {
+                this.SetValue(CommandProperty, value);
+            }
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        public string CommandName
+        {
+            get
+            {
+                return this.commandName;
+            }
+            set
+            {
+                if (this.CommandName != value)
+                {
+                    this.commandName = value;
+                }
+            }
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        public object CommandParameter
+        {
+            get
+            {
+                return this.GetValue(CommandParameterProperty);
+            }
+            set
+            {
+                this.SetValue(CommandParameterProperty, value);
+            }
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        /// <param name="parameter"></param>
+        protected override void Invoke(object parameter)
+        {
+            this.InvokeParameter = parameter;
+
+            if (this.AssociatedObject != null)
+            {
+                ICommand command = this.ResolveCommand();
+                if ((command != null) && command.CanExecute(this.CommandParameter))
+                {
+                    command.Execute(this.CommandParameter);
+                }
+            }
+        }
+
+        private ICommand ResolveCommand()
+        {
+            ICommand command = null;
+            if (this.Command != null)
+            {
+                return this.Command;
+            }
+            var frameworkElement = this.AssociatedObject as FrameworkElement;
+            if (frameworkElement != null)
+            {
+                object dataContext = frameworkElement.DataContext;
+                if (dataContext != null)
+                {
+                    PropertyInfo commandPropertyInfo = dataContext
+                        .GetType()
+                        .GetProperties(BindingFlags.Public | BindingFlags.Instance)
+                        .FirstOrDefault(
+                            p =>
+                            typeof(ICommand).IsAssignableFrom(p.PropertyType) &&
+                            string.Equals(p.Name, this.CommandName, StringComparison.Ordinal)
+                        );
+
+                    if (commandPropertyInfo != null)
+                    {
+                        command = (ICommand)commandPropertyInfo.GetValue(dataContext, null);
+                    }
+                }
+            }
+            return command;
+        }
+    }
+}
diff --git a/Juick/Classes/LowProfileImageLoader.cs b/Juick/Classes/LowProfileImageLoader.cs
index d1eb3da..a69c386 100644
--- a/Juick/Classes/LowProfileImageLoader.cs
+++ b/Juick/Classes/LowProfileImageLoader.cs
@@ -51,7 +51,7 @@ namespace Juick.Classes
         [SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Justification = "UriSource is applicable only to Image elements.")]
         public static void SetUriSource(Image obj, Uri value)
         {
-            if (null == obj)
+            if (null == obj || null == value)
             {
                 throw new ArgumentNullException("obj");
             }
@@ -146,6 +146,8 @@ namespace Juick.Classes
                     pendingRequests[index] = pendingRequests[count - 1];
                     pendingRequests.RemoveAt(count - 1);
                     count--;
+                    if (pendingRequest.Uri == null)
+                        continue;
                     if (pendingRequest.Uri.IsAbsoluteUri)
                     {
                         // Download from network
diff --git a/Juick/Classes/ScrollViewerMonitor.cs b/Juick/Classes/ScrollViewerMonitor.cs
deleted file mode 100644
index 4e96797..0000000
--- a/Juick/Classes/ScrollViewerMonitor.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Input;
-using System.Windows.Media;
-
-namespace Juick.Classes
-{
-    public class ScrollViewerMonitor
-    {
-        public static DependencyProperty AtEndCommandProperty =
-            DependencyProperty.RegisterAttached("AtEndCommand", typeof(ICommand), typeof(ScrollViewerMonitor), new PropertyMetadata(OnAtEndCommandChanged));
-
-        public static ICommand GetAtEndCommand(DependencyObject obj)
-        {
-            return (ICommand)obj.GetValue(AtEndCommandProperty);
-        }
-
-        public static void SetAtEndCommand(DependencyObject obj, ICommand value)
-        {
-            obj.SetValue(AtEndCommandProperty, value);
-        }
-
-        public static void OnAtEndCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
-        {
-            var element = (FrameworkElement)d;
-            if (element != null)
-            {
-                element.Loaded -= element_Loaded;
-                element.Loaded += element_Loaded;
-            }
-        }
-
-        static void element_Loaded(object sender, RoutedEventArgs e)
-        {
-            var element = (FrameworkElement)sender;
-            element.Loaded -= element_Loaded;
-            var scrollViewer = (ScrollViewer)element.Parent;
-            if (scrollViewer == null)
-            {
-                throw new InvalidOperationException("ScrollViewer not found.");
-            }
-
-            var listener = new DependencyPropertyListener();
-            listener.Changed += (s, eArgs) =>
-                {
-                    var atBottom = scrollViewer.VerticalOffset >= scrollViewer.ScrollableHeight - scrollViewer.ScrollableHeight/3;
-                    if (atBottom)
-                    {
-                        var atEnd = GetAtEndCommand(element);
-                        if (atEnd != null && atEnd.CanExecute(null))
-                        {
-                            atEnd.Execute(null);
-                        }
-                    }
-                };
-            var binding = new Binding("VerticalOffset") { Source = scrollViewer };
-            listener.Attach(scrollViewer, binding);
-        }
-    }
-}
diff --git a/Juick/Controls/MessageList.xaml b/Juick/Controls/MessageList.xaml
index 7a5882f..96cd81b 100644
--- a/Juick/Controls/MessageList.xaml
+++ b/Juick/Controls/MessageList.xaml
@@ -5,8 +5,10 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:bindings="clr-namespace:Juick.Classes" 
     xmlns:usercontrols="clr-namespace:Juick.Controls"
-    xmlns:converters="clr-namespace:Juick.Converters"                 
+    xmlns:converters="clr-namespace:Juick.Converters" 
+    xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
     mc:Ignorable="d"
+    xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
     FontFamily="{StaticResource PhoneFontFamilyNormal}"
     FontSize="{StaticResource PhoneFontSizeNormal}"
     Foreground="{StaticResource PhoneForegroundBrush}"
@@ -16,55 +18,57 @@
     </UserControl.Resources>
 
     <Grid x:Name="LayoutRoot">
-        <ScrollViewer>
-            <ItemsControl Margin="0, 0, -12, 0"
-                 ItemsSource="{Binding Items}"
-                 bindings:ScrollViewerMonitor.AtEndCommand="{Binding LoadMessagesPageCommand}">
-                <ItemsControl.ItemTemplate>
-                    <DataTemplate>
-                        <HyperlinkButton NavigateUri="{Binding MID, Converter={StaticResource uriConverter}}">
-                            <HyperlinkButton.Template>
-                                <ControlTemplate>
-                                    <Border BorderBrush="{StaticResource PhoneForegroundBrush}" BorderThickness="0 0 0 1">
-                                        <Grid>
-                                            <Grid.ColumnDefinitions>
-                                                <ColumnDefinition Width="Auto" />
-                                                <ColumnDefinition Width="*" />
-                                            </Grid.ColumnDefinitions>
-                                            <Grid.RowDefinitions>
-                                                <RowDefinition Height="Auto" />
-                                                <RowDefinition Height="Auto" />
-                                                <RowDefinition Height="Auto" />
-                                                <RowDefinition Height="Auto" />
-                                            </Grid.RowDefinitions>
-                                            <Image bindings:LowProfileImageLoader.UriSource="{Binding AvatarUri}" Grid.Row="0" Grid.Column="0" Margin="3" />
-                                            <TextBlock Text="{Binding Username}" Grid.Row="0" Grid.Column="1"
+        <toolkit:LongListSelector x:Name="longList" Margin="0, 0, -12, 0"
+                 ItemsSource="{Binding Items}" IsFlatList="true">
+            <i:Interaction.Triggers>
+                <i:EventTrigger EventName="Link">
+                    <bindings:InvokeDelegateCommandAction Command="{Binding LoadMessagesPageCommand}"
+                                           CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=InvokeParameter}"/>
+                </i:EventTrigger>
+                <i:EventTrigger EventName="SelectionChanged">
+                    <bindings:InvokeDelegateCommandAction Command="{Binding NavigateNextCommand}"
+                                           CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=InvokeParameter}"/>
+                </i:EventTrigger>
+            </i:Interaction.Triggers>
+            <toolkit:LongListSelector.ItemTemplate>
+                <DataTemplate>
+                    <Border BorderBrush="{StaticResource PhoneForegroundBrush}" BorderThickness="0 0 0 1">
+                        <Grid>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto" />
+                                <ColumnDefinition Width="*" />
+                            </Grid.ColumnDefinitions>
+                            <Grid.RowDefinitions>
+                                <RowDefinition Height="Auto" />
+                                <RowDefinition Height="Auto" />
+                                <RowDefinition Height="Auto" />
+                                <RowDefinition Height="Auto" />
+                            </Grid.RowDefinitions>
+                            <Image bindings:LowProfileImageLoader.UriSource="{Binding AvatarUri}" Grid.Row="0" Grid.Column="0" Margin="3" />
+                            <TextBlock Text="{Binding Username}" Grid.Row="0" Grid.Column="1"
                      Margin="5,0,5,5" VerticalAlignment="Top"
                      HorizontalAlignment="Left"
                      FontFamily="{StaticResource PhoneFontFamilySemiLight}"
                      FontSize="{StaticResource PhoneFontSizeLarge}"
                      Style="{StaticResource PhoneTextAccentStyle}" />
-                                            <!--Style="{StaticResource PhoneTextNormalStyle}"-->
-                                            <usercontrols:HyperLinkRichTextBox Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2"
+                            <!--Style="{StaticResource PhoneTextNormalStyle}"-->
+                            <usercontrols:HyperLinkRichTextBox Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2"
                                TextWrapping="Wrap" HorizontalAlignment="Left"
                                Foreground="{StaticResource PhoneForegroundBrush}"
                                Margin="5,0,5,5" VerticalAlignment="Top"
                                IsReadOnly="True" Text="{Binding MessageText}" />
-                                            <Image bindings:LowProfileImageLoader.UriSource="{Binding Attachment}" Grid.Row="2" Grid.Column="0" Margin="3" Grid.ColumnSpan="2" />
-                                            <TextBlock Text="{Binding Status}" Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2"
+                            <Image bindings:LowProfileImageLoader.UriSource="{Binding Attachment}" Grid.Row="2" Grid.Column="0" Margin="3" Grid.ColumnSpan="2" />
+                            <TextBlock Text="{Binding Status}" Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2"
                      Foreground="{StaticResource PhoneForegroundBrush}"
                      Style="{StaticResource PhoneTextAccentStyle}"
                      FontSize="{StaticResource PhoneFontSizeSmall}"
                      Margin="5,0,5,5" VerticalAlignment="Top"
                      TextWrapping="Wrap" HorizontalAlignment="Left"/>
-                                        </Grid>
-                                    </Border>
-                                </ControlTemplate>
-                            </HyperlinkButton.Template>
-                        </HyperlinkButton>
-                    </DataTemplate>
-                </ItemsControl.ItemTemplate>
-            </ItemsControl>
-        </ScrollViewer>
+                        </Grid>
+                    </Border>
+
+                </DataTemplate>
+            </toolkit:LongListSelector.ItemTemplate>
+        </toolkit:LongListSelector>
     </Grid>
 </UserControl>
diff --git a/Juick/Juick.csproj b/Juick/Juick.csproj
index 8e47876..173aef8 100644
--- a/Juick/Juick.csproj
+++ b/Juick/Juick.csproj
@@ -25,6 +25,8 @@
     <SilverlightAppEntry>Juick.App</SilverlightAppEntry>

     <ValidateXaml>true</ValidateXaml>

     <ThrowErrorsInValidation>true</ThrowErrorsInValidation>

+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>

+    <RestorePackages>true</RestorePackages>

   </PropertyGroup>

   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

     <DebugSymbols>true</DebugSymbols>

@@ -51,6 +53,9 @@
   <ItemGroup>

     <Reference Include="Microsoft.Phone" />

     <Reference Include="Microsoft.Phone.Controls" />

+    <Reference Include="Microsoft.Phone.Controls.Toolkit">

+      <HintPath>..\packages\WPtoolkit.4.2012.10.30\lib\sl4-windowsphone71\Microsoft.Phone.Controls.Toolkit.dll</HintPath>

+    </Reference>

     <Reference Include="Microsoft.Phone.Interop" />

     <Reference Include="Microsoft.Xna.Framework" />

     <Reference Include="RestSharp.WindowsPhone, Version=104.1.0.0, Culture=neutral, processorArchitecture=MSIL">

@@ -62,6 +67,7 @@
     <Reference Include="system" />

     <Reference Include="System.Core" />

     <Reference Include="System.Net" />

+    <Reference Include="System.Windows.Interactivity, Version=3.8.5.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />

     <Reference Include="System.Xml" />

     <Reference Include="mscorlib.extensions" />

     <Reference Include="System.Xml.Serialization" />

@@ -80,8 +86,8 @@
     <Compile Include="Classes\DelegateCommand.cs" />

     <Compile Include="Classes\DependencyPropertyListener.cs" />

     <Compile Include="Classes\ExpressionHelper.cs" />

+    <Compile Include="Classes\InvokeDelegateCommandAction.cs" />

     <Compile Include="Classes\LowProfileImageLoader.cs" />

-    <Compile Include="Classes\ScrollViewerMonitor.cs" />

     <Compile Include="Classes\TileHelper.cs" />

     <Compile Include="Controls\HyperLinkRichTextBox.cs" />

     <Compile Include="Controls\MessageList.xaml.cs">

@@ -142,6 +148,10 @@
     <Content Include="ApplicationIcon.png">

       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>

     </Content>

+    <Resource Include="Toolkit.Content\ApplicationBar.Cancel.png" />

+    <Resource Include="Toolkit.Content\ApplicationBar.Check.png" />

+    <Resource Include="Toolkit.Content\ApplicationBar.Delete.png" />

+    <Resource Include="Toolkit.Content\ApplicationBar.Select.png" />

     <Resource Include="Images\appbar.add.rest.png" />

     <Resource Include="Images\appbar.back.rest.png" />

     <Resource Include="Images\appbar.basecircle.rest.png" />

@@ -179,6 +189,7 @@
     <Resource Include="Images\appbar.transport.rew.rest.png" />

     <Resource Include="Images\appbar.upload.rest.png" />

     <Content Include="Images\appbar.send.png" />

+    <Content Include="README_FIRST.txt" />

     <Content Include="SplashScreenImage.jpg" />

   </ItemGroup>

   <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight for Phone\$(TargetFrameworkVersion)\Microsoft.Silverlight.$(TargetFrameworkProfile).Overrides.targets" />

@@ -191,4 +202,5 @@
   </Target>

   -->

   <ProjectExtensions />

+  <Import Project="$(SolutionDir)\.nuget\nuget.targets" />

 </Project>
\ No newline at end of file
diff --git a/Juick/MainPage.xaml.cs b/Juick/MainPage.xaml.cs
index d6b0b08..503c023 100644
--- a/Juick/MainPage.xaml.cs
+++ b/Juick/MainPage.xaml.cs
@@ -110,6 +110,11 @@ namespace Juick
             {

                 NavigationService.Navigate(new Uri(navigateUri, UriKind.Relative));

             }

+            else

+            {

+                ((ViewModels.ViewModelBase)Home.DataContext).LoadData(null);

+                ((ViewModels.ViewModelBase)Last.DataContext).LoadData(null);            

+            }

         }

 

         void PushChannel_ChannelUriUpdated(object sender, NotificationChannelUriEventArgs e)

@@ -163,8 +168,8 @@ namespace Juick
         {

             App.MyFeedView.Items.Clear();

             App.LastView.Items.Clear();

-            App.MyFeedView.LoadData();

-            App.LastView.LoadData();

+            App.MyFeedView.LoadData(null);

+            App.LastView.LoadData(null);

         }

 

         private void ApplicationBarMenuItemClick(object sender, EventArgs e)

diff --git a/Juick/ThreadView.xaml.cs b/Juick/ThreadView.xaml.cs
index d17f8f5..be6db02 100644
--- a/Juick/ThreadView.xaml.cs
+++ b/Juick/ThreadView.xaml.cs
@@ -27,7 +27,7 @@ namespace Juick
             if (NavigationContext.QueryString.TryGetValue("mid", out _mid))

             {

                 Model.Mid = int.Parse(_mid);

-                Model.LoadData();

+                Model.LoadData(null);

             }

         }

 

diff --git a/Juick/Toolkit.Content/ApplicationBar.Cancel.png b/Juick/Toolkit.Content/ApplicationBar.Cancel.png
new file mode 100644
index 0000000..4dd724f
--- /dev/null
+++ b/Juick/Toolkit.Content/ApplicationBar.Cancel.png
diff --git a/Juick/Toolkit.Content/ApplicationBar.Check.png b/Juick/Toolkit.Content/ApplicationBar.Check.png
new file mode 100644
index 0000000..7a07466
--- /dev/null
+++ b/Juick/Toolkit.Content/ApplicationBar.Check.png
diff --git a/Juick/Toolkit.Content/ApplicationBar.Delete.png b/Juick/Toolkit.Content/ApplicationBar.Delete.png
new file mode 100644
index 0000000..95bb16d
--- /dev/null
+++ b/Juick/Toolkit.Content/ApplicationBar.Delete.png
diff --git a/Juick/Toolkit.Content/ApplicationBar.Select.png b/Juick/Toolkit.Content/ApplicationBar.Select.png
new file mode 100644
index 0000000..995deaa
--- /dev/null
+++ b/Juick/Toolkit.Content/ApplicationBar.Select.png
diff --git a/Juick/ViewModels/ViewModelBase.cs b/Juick/ViewModels/ViewModelBase.cs
index 2427a80..80d3d8b 100644
--- a/Juick/ViewModels/ViewModelBase.cs
+++ b/Juick/ViewModels/ViewModelBase.cs
@@ -9,6 +9,10 @@ using System.Windows.Media.Imaging;
 using Juick.Classes;
 using JuickApi;
 using RestSharp;
+using System.Diagnostics;
+using System.Windows.Navigation;
+using Microsoft.Phone.Controls;
+using System.Windows.Controls;
 
 namespace Juick.ViewModels
 {
@@ -21,11 +25,14 @@ namespace Juick.ViewModels
         {
             Items = new ObservableCollection<PostItem>();
             LoadMessagesPageCommand = new DelegateCommand(LoadData, () => !IsDataLoading);
+            NavigateNextCommand = new DelegateCommand(NavigateToThread, () => true);
         }
 
         public string RestUri { get; set; }
         public virtual string Caption { get { return "juick"; } }
 
+        public string SelectedId { get; set; }
+
         /// <summary>
         /// A collection for MessageViewModel objects.
         /// </summary>
@@ -33,6 +40,8 @@ namespace Juick.ViewModels
 
         public DelegateCommand LoadMessagesPageCommand { get; private set; }
 
+        public DelegateCommand NavigateNextCommand { get; private set; }
+
         public bool IsDataLoading
         {
             get { return isDataLoading; }
@@ -44,16 +53,36 @@ namespace Juick.ViewModels
             }
         }
 
+        public void NavigateToThread(object param)
+        {
+            var selectionChangedEventArgs = param as SelectionChangedEventArgs;
+            if (param != null)
+            {
+                ((App)App.Current).NavigateTo(new Uri(string.Format("/ThreadView.xaml?mid={0}", ((PostItem)selectionChangedEventArgs.AddedItems[0]).MID), UriKind.Relative));
+            }
+            
+        }
+
         /// <summary>
         /// Creates and adds a few MessageViewModel objects into the Items collection.
         /// </summary>
-        public void LoadData()
+        public void LoadData(object EventArgs)
         {
-            if (IsDataLoading) {
+            const int offset = 5;
+            if (IsDataLoading)
+            {
                 return;
             }
+            if (EventArgs != null)
+            {
+                var item = (EventArgs as LinkUnlinkEventArgs).ContentPresenter.Content;
+                if (!item.Equals(Items[Items.Count - offset])) {
+                    return;
+                }
+            }
 
-            const int PageSize = 1;
+            int count = Items.Count;
+            
 
             if (string.IsNullOrEmpty(RestUri))
             {
@@ -65,12 +94,12 @@ namespace Juick.ViewModels
             else if (RestUri.StartsWith("/home?", StringComparison.InvariantCulture) && Items.Count > 0)
             {
                 var lastItem = Items[Items.Count - 1];
-                RestUri = string.Format("/home?before_mid={0}&page={1}", lastItem.MID, PageSize);
+                RestUri = string.Format("/home?before_mid={0}", lastItem.MID);
             }
             else if (RestUri.StartsWith("/messages?", StringComparison.InvariantCulture) && Items.Count > 0)
             {
                 var lastItem = Items[Items.Count - 1];
-                RestUri = string.Format("/messages?before_mid={0}&page={1}", lastItem.MID, PageSize);
+                RestUri = string.Format("/messages?before_mid={0}", lastItem.MID);
             }
 
             var request = new RestRequest(RestUri + "&rnd=" + Environment.TickCount);
@@ -90,7 +119,6 @@ namespace Juick.ViewModels
 
             //Items.Clear();
             response.Data.Select(x => new PostItem(x)).ToList().ForEach(i => Items.Add(i));
-            
         }
 
 
diff --git a/Juick/packages.config b/Juick/packages.config
index 051648d..73aeefe 100644
--- a/Juick/packages.config
+++ b/Juick/packages.config
@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>

 <packages>

   <package id="RestSharp" version="104.1" targetFramework="sl40-wp71" />

+  <package id="WPtoolkit" version="4.2012.10.30" targetFramework="sl40-wp71" />

 </packages>
\ No newline at end of file