Open corresponding SettingsPage directly from Plugin

GitUI/CommandsDialogs/SettingsDialog/SettingsPageReference.cs

@@ -1,4 +1,5 @@
-using System;
+using GitUIPluginInterfaces;
+using System;
 
 namespace GitUI.CommandsDialogs.SettingsDialog
 {
@@ -11,6 +12,9 @@ public abstract class SettingsPageReference
     { 
     }
 
+    /// <summary>
+    /// Type may be a SettingsPage type or a IGitPlugin subclass type
+    /// </summary>
     public class SettingsPageReferenceByType : SettingsPageReference
     {
         private readonly Type _settingsPageType;
@@ -37,4 +41,14 @@ public override string ToString()
             return SettingsPageType.ToString();
         }
     }
+
+    public class SettingsPageReferenceByPlugin : SettingsPageReferenceByType
+    {
+        private readonly IGitPlugin _gitPlugin;
+
+        public SettingsPageReferenceByPlugin(IGitPlugin gitPlugin)
+            : base(gitPlugin.GetType())
+        {
+        }
+    }
 }

GitUI/GitUICommands.cs

@@ -1172,6 +1172,12 @@ public bool StartSettingsDialog()
             return StartSettingsDialog(null);
         }
 
+        public bool StartSettingsDialog(IGitPlugin gitPlugin)
+        {
+            // TODO: how to pass the main dialog as owner of the SettingsDialog (first parameter):
+            return StartSettingsDialog(null, new SettingsPageReferenceByPlugin(gitPlugin));
+        }
+
         public bool StartArchiveDialog(IWin32Window owner = null, GitRevision revision = null, string path = null)
         {
             return DoActionOnRepo(owner, true, false, PreArchive, PostArchive, () =>

Plugins/BackgroundFetch/BackgroundFetchPlugin.cs

@@ -93,8 +93,9 @@ public override void Unregister(IGitUICommands gitUiCommands)
             base.Unregister(gitUiCommands);
         }
 
-        public override bool Execute(GitUIBaseEventArgs gitUiCommands)
+        public override bool Execute(GitUIBaseEventArgs gitUiArgs)
         {
+            gitUiArgs.GitUICommands.StartSettingsDialog(this);
             return false;
         }
     }

Plugins/DeleteUnusedBranches/DeleteUnusedBranchesForm.cs

@@ -12,14 +12,18 @@ public sealed partial class DeleteUnusedBranchesForm : Form
         private readonly int days;
 		private readonly string referenceBranch;
         private readonly IGitModule gitCommands;
+        private readonly IGitUICommands _gitUICommands;
+        private readonly IGitPlugin _gitPlugin;
 
-        public DeleteUnusedBranchesForm(int days, string referenceBranch, IGitModule gitCommands)
+        public DeleteUnusedBranchesForm(int days, string referenceBranch, IGitModule gitCommands, IGitUICommands gitUICommands, IGitPlugin gitPlugin)
         {
             InitializeComponent();
 
 			this.referenceBranch = referenceBranch;
             this.days = days;
             this.gitCommands = gitCommands;
+            _gitUICommands = gitUICommands;
+            _gitPlugin = gitPlugin;
             instructionLabel.Text = "Choose branches to delete. Only branches that are fully merged in '" + referenceBranch + "' will be deleted.";
         }
 
@@ -70,5 +74,12 @@ private void Delete_Click(object sender, EventArgs e)
                 BranchesGrid.Refresh();
             }
         }
+
+        private void buttonSettings_Click(object sender, EventArgs e)
+        {
+            Hide();
+            Close();
+            _gitUICommands.StartSettingsDialog(_gitPlugin);
+        }
     }
 }

Plugins/DeleteUnusedBranches/DeleteUnusedBranchesPlugin.cs

@@ -14,17 +14,20 @@ protected override void RegisterSettings()
         {
             base.RegisterSettings();
             Settings.AddSetting("Delete obsolete branches older than (days)", "30");
-			Settings.AddSetting("Branch where all branches should be merged in", "HEAD");
+            Settings.AddSetting("Branch where all branches should be merged in", "HEAD");
         }
 
-        public override bool Execute(GitUIBaseEventArgs gitUiCommands)
+        public override bool Execute(GitUIBaseEventArgs gitUiArgs)
         {
             int days;
             if (!int.TryParse(Settings.GetSetting("Delete obsolete branches older than (days)"), out days))
                 days = 30;
 
-	    string referenceBranch = Settings.GetSetting("Branch where all branches should be merged in");
-            using (var frm = new DeleteUnusedBranchesForm(days, referenceBranch, gitUiCommands.GitModule)) frm.ShowDialog(gitUiCommands.OwnerForm as IWin32Window);
+            string referenceBranch = Settings.GetSetting("Branch where all branches should be merged in");
+            using (var frm = new DeleteUnusedBranchesForm(days, referenceBranch, gitUiArgs.GitModule, gitUiArgs.GitUICommands, this))
+            {
+                frm.ShowDialog(gitUiArgs.OwnerForm as IWin32Window);
+            }
 
             return true;
         }

Plugins/GitUIPluginInterfaces/IGitUICommands.cs

@@ -141,6 +141,7 @@ public interface IGitUICommands
         bool StartRemotesDialog();
         bool StartResolveConflictsDialog();
         bool StartSettingsDialog();
+        bool StartSettingsDialog(IGitPlugin gitPlugin);
         bool StartStashDialog();
         bool StartSvnCloneDialog();
         bool StartSvnDcommitDialog();