[tepl] Add indent/unindent GActions and AmtkActionInfos

[Sébastien Wilmet <swilmet src gnome org>]

commit 701186b5d06ddd4d1b468922ffa84dff4d0ff46b
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Aug 19 20:37:26 2017 +0200

    Add indent/unindent GActions and AmtkActionInfos

 tepl/tepl-application-window.c |   58 ++++++++++++++++++++++++++++++++++++++++
 tepl/tepl-application.c        |    6 ++++
 2 files changed, 64 insertions(+), 0 deletions(-)
---
diff --git a/tepl/tepl-application-window.c b/tepl/tepl-application-window.c
index 79bd6f4..5531d62 100644
--- a/tepl/tepl-application-window.c
+++ b/tepl/tepl-application-window.c
@@ -63,6 +63,10 @@
  * - `"win.tepl-paste"`: calls tepl_view_paste_clipboard() on the active view.
  * - `"win.tepl-delete"`: calls tepl_view_delete_selection() on the active view.
  * - `"win.tepl-select-all"`: calls tepl_view_select_all() on the active view.
+ * - `"win.tepl-indent"`: calls gtk_source_view_indent_lines() on the selected
+ *   text of the active view.
+ * - `"win.tepl-unindent"`: calls gtk_source_view_unindent_lines() on the
+ *   selected text of the active view.
  *
  * See the tepl_menu_shell_append_edit_actions() convenience function.
  */
@@ -237,6 +241,50 @@ select_all_cb (GSimpleAction *action,
 }
 
 static void
+indent_cb (GSimpleAction *action,
+          GVariant      *parameter,
+          gpointer       user_data)
+{
+       TeplApplicationWindow *tepl_window = TEPL_APPLICATION_WINDOW (user_data);
+       TeplView *view;
+
+       view = tepl_tab_group_get_active_view (TEPL_TAB_GROUP (tepl_window));
+
+       if (view != NULL)
+       {
+               TeplBuffer *buffer;
+               GtkTextIter start;
+               GtkTextIter end;
+
+               buffer = tepl_tab_group_get_active_buffer (TEPL_TAB_GROUP (tepl_window));
+               gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (buffer), &start, &end);
+               gtk_source_view_indent_lines (GTK_SOURCE_VIEW (view), &start, &end);
+       }
+}
+
+static void
+unindent_cb (GSimpleAction *action,
+            GVariant      *parameter,
+            gpointer       user_data)
+{
+       TeplApplicationWindow *tepl_window = TEPL_APPLICATION_WINDOW (user_data);
+       TeplView *view;
+
+       view = tepl_tab_group_get_active_view (TEPL_TAB_GROUP (tepl_window));
+
+       if (view != NULL)
+       {
+               TeplBuffer *buffer;
+               GtkTextIter start;
+               GtkTextIter end;
+
+               buffer = tepl_tab_group_get_active_buffer (TEPL_TAB_GROUP (tepl_window));
+               gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (buffer), &start, &end);
+               gtk_source_view_unindent_lines (GTK_SOURCE_VIEW (view), &start, &end);
+       }
+}
+
+static void
 update_undo_redo_actions_sensitivity (TeplApplicationWindow *tepl_window)
 {
        TeplView *view;
@@ -416,6 +464,14 @@ update_basic_edit_actions_sensitivity (TeplApplicationWindow *tepl_window)
        action = g_action_map_lookup_action (action_map, "tepl-select-all");
        g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
                                     buffer != NULL);
+
+       action = g_action_map_lookup_action (action_map, "tepl-indent");
+       g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
+                                    view_is_editable);
+
+       action = g_action_map_lookup_action (action_map, "tepl-unindent");
+       g_simple_action_set_enabled (G_SIMPLE_ACTION (action),
+                                    view_is_editable);
 }
 
 static void
@@ -448,6 +504,8 @@ add_actions (TeplApplicationWindow *tepl_window)
                { "tepl-paste", paste_cb },
                { "tepl-delete", delete_cb },
                { "tepl-select-all", select_all_cb },
+               { "tepl-indent", indent_cb },
+               { "tepl-unindent", unindent_cb },
        };
 
        amtk_action_map_add_action_entries_check_dups (G_ACTION_MAP (tepl_window->priv->gtk_window),
diff --git a/tepl/tepl-application.c b/tepl/tepl-application.c
index e199c0f..507e4e0 100644
--- a/tepl/tepl-application.c
+++ b/tepl/tepl-application.c
@@ -93,6 +93,12 @@ init_tepl_action_info_store (TeplApplication *tepl_app)
 
                { "win.tepl-select-all", "edit-select-all", N_("Select _All"), "<Control>a",
                  N_("Select all the text") },
+
+               { "win.tepl-indent", "format-indent-more", N_("_Indent"), "Tab",
+                 N_("Indent the selected lines") },
+
+               { "win.tepl-unindent", "format-indent-less", N_("_Unindent"), "<Shift>Tab",
+                 N_("Unindent the selected lines") },
        };
 
        g_assert (tepl_app->priv->tepl_action_info_store == NULL);