Feature: Link from code to GitHub via context menus

src/GitHub.App/SampleData/SampleViewModels.cs

@@ -409,6 +409,11 @@ public void SetIcon(bool isPrivate, bool isFork)
         {
         }
 
+        public UriString GenerateUrl(string path = null, int startLine = -1, int endLine = -1)
+        {
+            return null;
+        }
+
         public string Name { get; set; }
         public UriString CloneUrl { get; set; }
         public string LocalPath { get; set; }

src/GitHub.Exports/GitHub.Exports.csproj

@@ -112,6 +112,7 @@
     <Compile Include="Helpers\NotificationAwareObject.cs" />
     <Compile Include="Services\Connection.cs" />
     <Compile Include="Services\GitService.cs" />
+    <Compile Include="Services\IActiveDocumentSnapshot.cs" />
     <Compile Include="Services\IGitService.cs" />
     <Compile Include="Services\IMenuHandler.cs" />
     <Compile Include="Services\IMenuProvider.cs" />

src/GitHub.Exports/Models/ISimpleRepositoryModel.cs

@@ -18,5 +18,6 @@ public interface ISimpleRepositoryModel : INotifyPropertyChanged
         /// Updates the url information based on the local path
         /// </summary>
         void Refresh();
+        UriString GenerateUrl(string path = null, int startLine = -1, int endLine = -1);
     }
 }

src/GitHub.Exports/Models/SimpleRepositoryModel.cs

@@ -2,6 +2,7 @@
 using System.Diagnostics;
 using System.Globalization;
 using System.IO;
+using System.Linq;
 using GitHub.Primitives;
 using GitHub.UI;
 using GitHub.VisualStudio.Helpers;
@@ -10,7 +11,7 @@
 namespace GitHub.Models
 {
     [DebuggerDisplay("{DebuggerDisplay,nq}")]
-    public class SimpleRepositoryModel : NotificationAwareObject, ISimpleRepositoryModel, INotifyPropertySource, IEquatable<SimpleRepositoryModel>
+    public class SimpleRepositoryModel : NotificationAwareObject, ISimpleRepositoryModel, IEquatable<SimpleRepositoryModel>
     {
         public SimpleRepositoryModel(string name, UriString cloneUrl, string localPath = null)
         {
@@ -53,13 +54,76 @@ public void Refresh()
                 CloneUrl = uri;
         }
 
+        /// <summary>
+        /// Generates a http(s) url to the repository in the remote server, optionally
+        /// pointing to a specific file and specific line range in it.
+        /// </summary>
+        /// <param name="path">The file to generate an url to. Optional.</param>
+        /// <param name="startLine">A specific line, or (if specifying the <paramref name="endLine"/> as well) the start of a range</param>
+        /// <param name="endLine">The end of a line range on the specified file.</param>
+        /// <returns>An UriString with the generated url, or null if the repository has no remote server configured or if it can't be found locally</returns>
+        public UriString GenerateUrl(string path = null, int startLine = -1, int endLine = -1)
+        {
+            if (CloneUrl == null)
+                return null;
+
+            var sha = HeadSha;
+            // this also incidentally checks whether the repo has a valid LocalPath
+            if (String.IsNullOrEmpty(sha))
+                return CloneUrl.ToRepositoryUrl().AbsoluteUri;
+
+            if (path != null && Path.IsPathRooted(path))
+            {
+                // if the path root doesn't match the repository local path, then ignore it
+                if (!path.StartsWith(LocalPath, StringComparison.OrdinalIgnoreCase))
+                {
+                    Debug.Assert(false, String.Format(CultureInfo.CurrentCulture, "GenerateUrl: path {0} doesn't match repository {1}", path, LocalPath));
+                    path = null;
+                }
+                else
+                    path = path.Substring(LocalPath.Length + 1);
+            }
+
+            return new UriString(GenerateUrl(CloneUrl.ToRepositoryUrl().AbsoluteUri, sha, path, startLine, endLine));
+        }
+
+        const string CommitFormat = "{0}/commit/{1}";
+        const string BlobFormat = "{0}/blob/{1}/{2}";
+        const string StartLineFormat = "{0}#L{1}";
+        const string EndLineFormat = "{0}-L{1}";
+        static string GenerateUrl(string basePath, string sha, string path, int startLine = -1, int endLine = -1)
+        {
+            if (sha == null)
+                return basePath;
+
+            if (String.IsNullOrEmpty(path))
+                return String.Format(CultureInfo.InvariantCulture, CommitFormat, basePath, sha);
+
+            var ret = String.Format(CultureInfo.InvariantCulture, BlobFormat, basePath, sha, path.Replace(@"\", "/"));
+            if (startLine < 0)
+                return ret;
+            ret = String.Format(CultureInfo.InvariantCulture, StartLineFormat, ret, startLine);
+            if (endLine < 0)
+                return ret;
+            return String.Format(CultureInfo.InvariantCulture, EndLineFormat, ret, endLine);
+        }
+
         public string Name { get; }
         UriString cloneUrl;
         public UriString CloneUrl { get { return cloneUrl; } set { cloneUrl = value; this.RaisePropertyChange(); } }
         public string LocalPath { get; }
         Octicon icon;
         public Octicon Icon { get { return icon; } set { icon = value; this.RaisePropertyChange(); } }
 
+        public string HeadSha
+        {
+            get
+            {
+                var repo = GitService.GitServiceHelper.GetRepo(LocalPath);
+                return repo?.Commits.FirstOrDefault()?.Sha ?? String.Empty;
+            }
+        }
+
         /// <summary>
         /// Note: We don't consider CloneUrl a part of the hash code because it can change during the lifetime
         /// of a repository. Equals takes care of any hash collisions because of this

src/GitHub.Exports/Services/IActiveDocumentSnapshot.cs

@@ -0,0 +1,9 @@
+namespace GitHub.VisualStudio
+{
+    public interface IActiveDocumentSnapshot
+    {
+        string Name { get; }
+        int StartLine { get; }
+        int EndLine { get; }
+    }
+}

src/GitHub.VisualStudio/Base/MenuBase.cs

@@ -1,4 +1,8 @@
 using System;
+using System.Globalization;
+using GitHub.Extensions;
+using GitHub.Models;
+using GitHub.Services;
 
 namespace GitHub.VisualStudio
 {
@@ -7,6 +11,8 @@ public abstract class MenuBase
         readonly IServiceProvider serviceProvider;
         protected IServiceProvider ServiceProvider { get { return serviceProvider; } }
 
+        protected ISimpleRepositoryModel ActiveRepo { get; private set; }
+
         protected MenuBase()
         {
         }
@@ -15,5 +21,30 @@ protected MenuBase(IServiceProvider serviceProvider)
         {
             this.serviceProvider = serviceProvider;
         }
+
+        void RefreshRepo()
+        {
+            ActiveRepo = ServiceProvider.GetExportedValue<ITeamExplorerServiceHolder>().ActiveRepo;
+
+            if (ActiveRepo == null)
+            {
+                var vsservices = ServiceProvider.GetExportedValue<IVSServices>();
+                string path = vsservices?.GetActiveRepoPath() ?? String.Empty;
+                try
+                {
+                    ActiveRepo = !String.IsNullOrEmpty(path) ? new SimpleRepositoryModel(path) : null;
+                }
+                catch (Exception ex)
+                {
+                    VsOutputLogger.WriteLine(string.Format(CultureInfo.CurrentCulture, "{0}: Error loading the repository from '{1}'. {2}", GetType(), path, ex));
+                }
+            }
+        }
+
+        protected bool IsGitHubRepo()
+        {
+            RefreshRepo();
+            return ActiveRepo?.CloneUrl?.RepositoryName != null;
+        }
     }
 }

src/GitHub.VisualStudio/Base/TeamExplorerNavigationItemBase.cs

@@ -45,11 +45,9 @@ void OnThemeChanged()
         {
             try
             {
-                var color = VSColorTheme.GetThemedColor(EnvironmentColors.ToolWindowTextColorKey);
-                var brightness = color.GetBrightness();
-                var dark = brightness > 0.5f;
-
-                Icon = SharedResources.GetDrawingForIcon(octicon, dark ? Colors.DarkThemeNavigationItem : Colors.LightThemeNavigationItem, dark ? "dark" : "light");
+                var theme = Colors.DetectTheme();
+                var dark = theme == "Dark";
+                Icon = SharedResources.GetDrawingForIcon(octicon, dark ? Colors.DarkThemeNavigationItem : Colors.LightThemeNavigationItem, theme);
             }
             catch (ArgumentNullException)
             {

src/GitHub.VisualStudio/GitHub.VisualStudio.csproj

@@ -212,8 +212,12 @@
     <Compile Include="Base\TeamExplorerServiceHolder.cs" />
     <Compile Include="Converters\CountToVisibilityConverter.cs" />
     <Compile Include="Helpers\SharedDictionaryManager.cs" />
+    <Compile Include="Helpers\ActiveDocumentSnapshot.cs" />
+    <Compile Include="Menus\OpenLink.cs" />
+    <Compile Include="Menus\LinkMenuBase.cs" />
     <Compile Include="Menus\ShowGitHubPane.cs" />
     <Compile Include="Menus\AddConnection.cs" />
+    <Compile Include="Menus\CopyLink.cs" />
     <Compile Include="Base\MenuBase.cs" />
     <Compile Include="Menus\MenuProvider.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -340,6 +344,14 @@
     <Resource Include="Resources\default_user_avatar.png" />
   </ItemGroup>
   <ItemGroup>
+    <Page Include="Resources\icons\clippy.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Include="Resources\icons\link_external.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="Resources\icons\refresh.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
@@ -360,6 +372,18 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="Styles\ThemeBlue.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Include="Styles\ThemeLight.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Include="Styles\ThemeDark.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="SharedDictionary.xaml">
       <Generator>MSBuild:Compile</Generator>
     </Page>

src/GitHub.VisualStudio/GitHub.VisualStudio.imagemanifest

@@ -8,6 +8,8 @@
     <ID Name="arrow_right" Value="3" />
     <ID Name="refresh" Value="4" />
     <ID Name="pullrequest" Value="5" />
+    <ID Name="link_external" Value="6"/>
+    <ID Name="clippy" Value="7"/>
   </Symbols>
 
   <Images>
@@ -26,5 +28,11 @@
     <Image Guid="$(guidImages)" ID="$(pullrequest)">
       <Source Uri="$(Resources)/git_pull_request.xaml" />
     </Image>
+    <Image Guid="$(guidImages)" ID="$(link_external)">
+      <Source Uri="$(Resources)/link_external.xaml" />
+    </Image>
+    <Image Guid="$(guidImages)" ID="$(clippy)">
+      <Source Uri="$(Resources)/clippy.xaml" />
+    </Image>
   </Images>
 </ImageManifest>