Add shortcuts for history panels

gitg/gitg-window.vala

@@ -357,11 +357,11 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable
 			d_infobar.hide();
 		});
 
-		unowned Gtk.BindingSet bset = Gtk.BindingSet.by_class(get_class());
+		unowned Gtk.BindingSet binding_set = Gtk.BindingSet.by_class(get_class());
 
 		for (int i = 0; i < 10; i++)
 		{
-			Gtk.BindingEntry.add_signal(bset,
+			Gtk.BindingEntry.add_signal(binding_set,
 			                            (Gdk.Key.@0 + i),
 			                            Gdk.ModifierType.MOD1_MASK,
 			                            "change-to-activity",
@@ -370,7 +370,7 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable
 			                            i);
 		}
 
-		Gtk.BindingEntry.add_signal(bset,
+		Gtk.BindingEntry.add_signal(binding_set,
 		                            Gdk.Key.Escape,
 		                            0,
 		                            "cancel",

gitg/history/gitg-history.vala

@@ -584,6 +584,22 @@ namespace GitgHistory
 			d_panels = new Gitg.UIElements<GitgExt.HistoryPanel>(extset,
 			                                                     d_main.stack_panel);
 
+			unowned Gtk.BindingSet binding_set = Gtk.BindingSet.by_class(get_class());
+
+			foreach(var element in d_panels.get_available_elements()) {
+				GitgExt.HistoryPanel panel = (GitgExt.HistoryPanel)element;
+				uint? key = panel.shortcut;
+				if (key != null) {
+					Gtk.BindingEntry.add_signal(binding_set,
+					                            key,
+					                            Gdk.ModifierType.MOD1_MASK,
+					                            "change-to-panel",
+					                            1,
+					                            typeof(string),
+					                            element.id);
+				}
+			};
+
 			d_refs_list_popup = new Gitg.PopupMenu(d_main.refs_list);
 			d_refs_list_popup.populate_menu.connect(on_refs_list_populate_menu);
 
@@ -605,6 +621,17 @@ namespace GitgHistory
 			d_commit_list_model.end_clear.connect(on_commit_model_end_clear);
 		}
 
+		[Signal(action = true)]
+		public virtual signal bool change_to_panel(string id)
+		{
+			var panel = d_panels.lookup(id);
+			if (panel != null) {
+				panel.activate();
+			}
+			return true;
+		}
+
+
 		private void update_walker_idle()
 		{
 			if (d_repository == null)

libgitg-ext/gitg-ext-history-panel.vala

@@ -42,6 +42,17 @@ public interface HistoryPanel : Object, UIElement
 	 * is created.
 	 */
 	public abstract GitgExt.History? history { owned get; construct set; }
+
+	/**
+	 * The ui element shortcut.
+	 *
+	 * If provided, the key to mix with Gdk.ModifierType.MOD1_MASK to enable
+	 * this element
+	 */
+	public virtual uint? shortcut
+	{
+		owned get { return null; }
+	}
 }
 
 }

plugins/diff/gitg-diff.vala

@@ -32,6 +32,11 @@ namespace GitgDiff
 
 		private ulong d_selection_changed_id;
 
+		public virtual uint? shortcut
+		{
+			owned get { return Gdk.Key.d; }
+		}
+
 		protected override void constructed()
 		{
 			base.constructed();

plugins/files/gitg-files.vala

@@ -48,6 +48,11 @@ namespace GitgFiles
 			history.selection_changed.connect(on_selection_changed);
 		}
 
+		public virtual uint? shortcut
+		{
+			owned get { return Gdk.Key.f; }
+		}
+
 		public string id
 		{
 			owned get { return "/org/gnome/gitg/Panels/Files"; }