[gthumb] shortcuts: added button to restore the default shortcuts

[Paolo Bacchilega <paobac src gnome org>]

commit ee4b2ef7de51dc380a48893703bdbd4fe120230a
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Tue Nov 12 10:36:46 2019 +0100

    shortcuts: added button to restore the default shortcuts

 data/ui/shortcuts-preferences.ui   | 43 ++++++++++++++++++++++++++++++++++++--
 gthumb/dlg-preferences-shortcuts.c | 37 ++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/shortcuts-preferences.ui b/data/ui/shortcuts-preferences.ui
index 1da14f7d..dca2d5c8 100644
--- a/data/ui/shortcuts-preferences.ui
+++ b/data/ui/shortcuts-preferences.ui
@@ -44,13 +44,27 @@
     <property name="can_focus">False</property>
     <property name="orientation">vertical</property>
     <property name="spacing">6</property>
+    <child>
+      <object class="GtkLabel">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <property name="label" translatable="yes">Keyboard Shortcuts:</property>
+        <property name="mnemonic_widget">shortcuts_list</property>
+        <property name="xalign">0</property>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">0</property>
+      </packing>
+    </child>
     <child>
       <object class="GtkScrolledWindow">
         <property name="visible">True</property>
         <property name="can_focus">True</property>
         <property name="shadow_type">in</property>
         <child>
-          <object class="GtkViewport">
+          <object class="GtkViewport" id="viewport1">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <child>
@@ -65,7 +79,32 @@
       <packing>
         <property name="expand">True</property>
         <property name="fill">True</property>
-        <property name="position">0</property>
+        <property name="position">1</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkBox">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <child>
+          <object class="GtkButton" id="restore_all_button">
+            <property name="label" translatable="yes">_Restore All…</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="fill">True</property>
+        <property name="position">2</property>
       </packing>
     </child>
   </object>
diff --git a/gthumb/dlg-preferences-shortcuts.c b/gthumb/dlg-preferences-shortcuts.c
index a83437c6..ff65ad45 100644
--- a/gthumb/dlg-preferences-shortcuts.c
+++ b/gthumb/dlg-preferences-shortcuts.c
@@ -395,6 +395,39 @@ sort_shortcuts_by_category (gconstpointer a,
 }
 
 
+static void
+restore_all_button_clicked_cb (GtkButton *button,
+                              gpointer   user_data)
+{
+       BrowserData *data = user_data;
+       GtkWidget   *dialog;
+       gboolean     reassign;
+
+       dialog = _gtk_yesno_dialog_new (GTK_WINDOW (data->preferences_dialog),
+                                       GTK_DIALOG_MODAL,
+                                       _("Do you want to revert all the changes and restore the default 
shortcuts?"),
+                                       _GTK_LABEL_CANCEL,
+                                       _("Restore"));
+       _gtk_dialog_add_class_to_response (GTK_DIALOG (dialog), GTK_RESPONSE_YES, 
GTK_STYLE_CLASS_DESTRUCTIVE_ACTION);
+
+       reassign = gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_YES;
+       gtk_widget_destroy (GTK_WIDGET (dialog));
+
+       if (reassign) {
+               int i;
+
+               for (i = 0; i < data->rows->len; i++) {
+                       RowData *row_data = g_ptr_array_index (data->rows, i);
+
+                       gth_shortcut_set_accelerator (row_data->shortcut, 
row_data->shortcut->default_accelerator);
+                       row_data_update_accel_label (row_data);
+               }
+
+               gth_main_shortcuts_changed (gth_window_get_shortcuts (GTH_WINDOW (data->browser)));
+       }
+}
+
+
 void
 shortcuts__dlg_preferences_construct_cb (GtkWidget  *dialog,
                                         GthBrowser *browser,
@@ -444,6 +477,10 @@ shortcuts__dlg_preferences_construct_cb (GtkWidget  *dialog,
                          "row-activated",
                          G_CALLBACK (shortcuts_list_row_activated_cb),
                          data);
+       g_signal_connect (_gtk_builder_get_widget (data->builder, "restore_all_button"),
+                         "clicked",
+                         G_CALLBACK (restore_all_button_clicked_cb),
+                         data);
 
        /* add the page to the preferences dialog */