[gedit/wip/merge-encoding-settings] EncodingsDialog: add Reset button



commit 86026bd376a8ed2174cb4dbbe4e7b92a0b862b31
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Mar 22 18:24:29 2015 +0100

    EncodingsDialog: add Reset button
    
    To not add a useless object attribute, use
    gtk_widget_get_template_child(), since the reset_button is used in only
    one function, we don't need to update its sensitivity or doing something
    else with it. And it's better to limit the number of attributes.

 gedit/gedit-encodings-dialog.c               |   47 ++++++++++++++++++++++++++
 gedit/resources/ui/gedit-encodings-dialog.ui |   16 +++++++++
 2 files changed, 63 insertions(+), 0 deletions(-)
---
diff --git a/gedit/gedit-encodings-dialog.c b/gedit/gedit-encodings-dialog.c
index 2ff7fc1..ea476ed 100644
--- a/gedit/gedit-encodings-dialog.c
+++ b/gedit/gedit-encodings-dialog.c
@@ -153,6 +153,7 @@ gedit_encodings_dialog_class_init (GeditEncodingsDialogClass *klass)
        gtk_widget_class_bind_template_child_private (widget_class, GeditEncodingsDialog, remove_button);
        gtk_widget_class_bind_template_child_private (widget_class, GeditEncodingsDialog, up_button);
        gtk_widget_class_bind_template_child_private (widget_class, GeditEncodingsDialog, down_button);
+       gtk_widget_class_bind_template_child_full (widget_class, "reset_button", FALSE, 0);
 }
 
 static void
@@ -458,9 +459,46 @@ init_liststores (GeditEncodingsDialog *dialog)
 }
 
 static void
+reset_button_clicked_cb (GtkWidget            *button,
+                        GeditEncodingsDialog *dialog)
+{
+       GtkDialog *msg_dialog;
+       gint response;
+
+       msg_dialog = GTK_DIALOG (gtk_message_dialog_new (GTK_WINDOW (dialog),
+                                                        GTK_DIALOG_DESTROY_WITH_PARENT |
+                                                        GTK_DIALOG_MODAL,
+                                                        GTK_MESSAGE_QUESTION,
+                                                        GTK_BUTTONS_NONE,
+                                                        "%s",
+                                                        _("Do you really want to reset the "
+                                                          "character encodings' preferences?")));
+
+       gtk_dialog_add_buttons (msg_dialog,
+                               _("_Cancel"), GTK_RESPONSE_CANCEL,
+                               _("_Reset"), GTK_RESPONSE_ACCEPT,
+                               NULL);
+
+       response = gtk_dialog_run (msg_dialog);
+
+       if (response == GTK_RESPONSE_ACCEPT)
+       {
+               g_settings_reset (dialog->priv->enc_settings, GEDIT_SETTINGS_CANDIDATE_ENCODINGS);
+
+               gtk_list_store_clear (dialog->priv->liststore_available);
+               gtk_list_store_clear (dialog->priv->liststore_chosen);
+
+               init_liststores (dialog);
+       }
+
+       gtk_widget_destroy (GTK_WIDGET (msg_dialog));
+}
+
+static void
 gedit_encodings_dialog_init (GeditEncodingsDialog *dialog)
 {
        GtkTreeSelection *selection;
+       GtkButton *reset_button;
 
        dialog->priv = gedit_encodings_dialog_get_instance_private (dialog);
 
@@ -517,6 +555,15 @@ gedit_encodings_dialog_init (GeditEncodingsDialog *dialog)
                          "clicked",
                          G_CALLBACK (down_button_clicked_cb),
                          dialog);
+
+       reset_button = GTK_BUTTON (gtk_widget_get_template_child (GTK_WIDGET (dialog),
+                                                                 GEDIT_TYPE_ENCODINGS_DIALOG,
+                                                                 "reset_button"));
+
+       g_signal_connect (reset_button,
+                         "clicked",
+                         G_CALLBACK (reset_button_clicked_cb),
+                         dialog);
 }
 
 GtkWidget *
diff --git a/gedit/resources/ui/gedit-encodings-dialog.ui b/gedit/resources/ui/gedit-encodings-dialog.ui
index 6abdeec..9211d20 100644
--- a/gedit/resources/ui/gedit-encodings-dialog.ui
+++ b/gedit/resources/ui/gedit-encodings-dialog.ui
@@ -304,6 +304,22 @@
                     <property name="top_attach">0</property>
                   </packing>
                 </child>
+                <child>
+                  <object class="GtkButton" id="reset_button">
+                    <property name="label" translatable="yes">_Reset</property>
+                    <property name="use_action_appearance">False</property>
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="receives_default">True</property>
+                    <property name="halign">start</property>
+                    <property name="valign">start</property>
+                    <property name="use_underline">True</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">3</property>
+                    <property name="top_attach">0</property>
+                  </packing>
+                </child>
               </object>
               <packing>
                 <property name="left_attach">1</property>


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