[gnome-system-monitor] Use pluralized end process button on revealer

[Robert Roth <robertroth src gnome org>]

commit ea7a604d30b304409c8db5b77e54ab1fc8c7dcc0
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Jan 30 23:03:28 2020 +0200

    Use pluralized end process button on revealer

 data/interface.ui | 2 +-
 src/proctable.cpp | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/data/interface.ui b/data/interface.ui
index d136f1dd..ecabaecf 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -147,7 +147,7 @@
                         <property name="visible">True</property>
                         <child>
                           <object class="GtkButton" id="end_process_button">
-                            <property name="label" translatable="yes">End _Process</property>
+                            <property name="label" translatable="yes">_End Process</property>
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
                             <property name="receives_default">True</property>
diff --git a/src/proctable.cpp b/src/proctable.cpp
index a20ab6d2..b980fb02 100644
--- a/src/proctable.cpp
+++ b/src/proctable.cpp
@@ -140,6 +140,12 @@ cb_row_selected (GtkTreeSelection *selection, gpointer data)
     GsmApplication *app = (GsmApplication *) data;
 
     ProcInfo *selected_process = NULL;
+    gint selected_count = gtk_tree_selection_count_selected_rows (selection);
+
+    app->selection = selection;
+
+    gchar *button_text = ngettext("_End Process", "_End Processes", selected_count);
+    gtk_button_set_label (GTK_BUTTON(app->end_process_button), button_text);
 
     /* get the most recent selected process and determine if there are
     ** no selected processes
@@ -612,8 +618,6 @@ proctable_new (GsmApplication * const app)
 
     selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (proctree));
 
-    app->selection = selection;
-
     gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
     
     g_signal_connect (G_OBJECT (selection),