Beginnings of displaying attachment

Author: golf1052

Signal-Windows/Controls/Attachment.xaml

@@ -0,0 +1,24 @@
+<UserControl
+    x:Class="Signal_Windows.Controls.Attachment"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:Signal_Windows.Controls"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d"
+    d:DesignHeight="200"
+    d:DesignWidth="200">
+
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*"/>
+            <ColumnDefinition Width="*"/>
+        </Grid.ColumnDefinitions>
+        <Ellipse Fill="#FF9B9B9B" Width="50" Height="50"/>
+        <SymbolIcon Symbol="Page2"/>
+        <StackPanel Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="8,0,0,0">
+            <TextBlock Text="{x:Bind FileName, Mode=OneWay}" Style="{StaticResource BodyTextBlockStyle}"/>
+            <TextBlock Text="{x:Bind FileSize, Mode=OneWay}" Style="{StaticResource CaptionTextBlockStyle}"/>
+        </StackPanel>
+    </Grid>
+</UserControl>

Signal-Windows/Controls/Attachment.xaml.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Signal_Windows.Models;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Navigation;
+
+// The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
+
+namespace Signal_Windows.Controls
+{
+    public sealed partial class Attachment : UserControl, INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        private string fileName;
+        public string FileName
+        {
+            get { return fileName; }
+            set { fileName = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(FileName))); }
+        }
+
+        private string fileSize;
+        public string FileSize
+        {
+            get { return fileSize; }
+            set { fileSize = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(FileSize))); }
+        }
+
+        public SignalAttachment Model
+        {
+            get { return DataContext as SignalAttachment; }
+            set { DataContext = value; }
+        }
+
+        public Attachment()
+        {
+            this.InitializeComponent();
+            DataContextChanged += Attachment_DataContextChanged;
+        }
+
+        private void Attachment_DataContextChanged(FrameworkElement sender, DataContextChangedEventArgs args)
+        {
+            if (Model != null)
+            {
+                FileName = Model.FileName;
+                FileSize = Utils.BytesToString(Model.Size);
+            }
+        }
+    }
+}

Signal-Windows/Controls/Message.xaml

@@ -16,6 +16,7 @@
     </UserControl.Resources>
     <Border Name="MessageBoxBorder" BorderBrush="#00000000" BorderThickness="1,1,1,1" CornerRadius="4,4,4,4" Padding="10 5 10 5" Margin="4">
         <ItemsControl>
+            <local:Attachment DataContext="{x:Bind Attachment, Mode=OneWay}" Visibility="{x:Bind HasAttachment, Mode=OneWay}"/>
             <TextBlock Name="MessageAuthor" FontWeight="Bold" />
             <TextBlock Name="MessageContentTextBlock" TextWrapping="Wrap" MaxWidth="300" IsTextSelectionEnabled="True" FontSize="14" Foreground="Black" />
             <Grid Name="FooterPanel" MaxWidth="300">

Signal-Windows/Controls/Message.xaml.cs

@@ -13,8 +13,10 @@
 
 namespace Signal_Windows.Controls
 {
-    public sealed partial class Message : UserControl
+    public sealed partial class Message : UserControl, INotifyPropertyChanged
     {
+        public event PropertyChangedEventHandler PropertyChanged;
+
         public SignalMessageContainer Model
         {
             get
@@ -27,6 +29,20 @@ public SignalMessageContainer Model
             }
         }
 
+        private bool hasAttachment;
+        public bool HasAttachment
+        {
+            get { return hasAttachment; }
+            set { hasAttachment = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(HasAttachment))); }
+        }
+
+        private SignalAttachment attachment;
+        public SignalAttachment Attachment
+        {
+            get { return attachment; }
+            set { attachment = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Attachment))); }
+        }
+
         public Message()
         {
             this.InitializeComponent();
@@ -93,6 +109,13 @@ private void UpdateUI()
                     FooterPanel.HorizontalAlignment = HorizontalAlignment.Left;
                 }
                 FancyTimestampBlock.Text = Utils.GetTimestamp(Model.Message.ComposedTimestamp);
+
+                HasAttachment = false;
+                if (Model.Message.Attachments?.Count > 0)
+                {
+                    HasAttachment = true;
+                    Attachment = Model.Message.Attachments[0];
+                }
             }
         }
 

Signal-Windows/Signal-Windows.csproj

@@ -145,6 +145,9 @@
     <Compile Include="Controls\AddContactListElement.xaml.cs">
       <DependentUpon>AddContactListElement.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Controls\Attachment.xaml.cs">
+      <DependentUpon>Attachment.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Controls\IdentityKeyChangeMessage.xaml.cs">
       <DependentUpon>IdentityKeyChangeMessage.xaml</DependentUpon>
     </Compile>
@@ -226,6 +229,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="Controls\Attachment.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="Controls\IdentityKeyChangeMessage.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>

Signal-Windows/Utils.cs

@@ -252,6 +252,17 @@ public static bool ContainsCaseInsensitive(this string str, string value)
             return CultureInfo.InvariantCulture.CompareInfo.IndexOf(str, value, CompareOptions.IgnoreCase) >= 0;
         }
 
+        public static String BytesToString(long byteCount) //https://stackoverflow.com/a/4975942/1569755
+        {
+            string[] suf = { "B", "KB", "MB", "GB", "TB", "PB", "EB" }; //Longs run out around EB
+            if (byteCount == 0)
+                return "0" + suf[0];
+            long bytes = Math.Abs(byteCount);
+            int place = Convert.ToInt32(Math.Floor(Math.Log(bytes, 1024)));
+            double num = Math.Round(bytes / Math.Pow(1024, place), 1);
+            return (Math.Sign(byteCount) * num).ToString() + suf[place];
+        }
+
         public static string GetCountryCode(string ISO3166) //https://stackoverflow.com/questions/34837436/uwp-get-country-phone-number-prefix
         {
             var dictionary = new Dictionary<string, string>();