[libdazzle] shortcuts: add dzl_shortcut_controller_remove_accel()

[Christian Hergert <chergert src gnome org>]

commit e11c2e483074c43bd3f6bbdeb1e657b9f66e4e8d
Author: Christian Hergert <chergert redhat com>
Date:   Sat Aug 10 20:42:48 2019 -0700

    shortcuts: add dzl_shortcut_controller_remove_accel()
    
    This is a helper to remove accels based on previously added commands. It
    is mostly just useful for auto-generated keybindings situations.

 src/shortcuts/dzl-shortcut-controller.c | 37 +++++++++++++++++++++++++++++++++
 src/shortcuts/dzl-shortcut-controller.h |  4 ++++
 2 files changed, 41 insertions(+)
---
diff --git a/src/shortcuts/dzl-shortcut-controller.c b/src/shortcuts/dzl-shortcut-controller.c
index 03b3578..7019f40 100644
--- a/src/shortcuts/dzl-shortcut-controller.c
+++ b/src/shortcuts/dzl-shortcut-controller.c
@@ -1248,3 +1248,40 @@ dzl_shortcut_controller_get_widget (DzlShortcutController *self)
 
   return priv->widget;
 }
+
+void
+dzl_shortcut_controller_remove_accel (DzlShortcutController *self,
+                                      const gchar           *accel,
+                                      DzlShortcutPhase       phase)
+{
+  DzlShortcutControllerPrivate *priv = dzl_shortcut_controller_get_instance_private (self);
+  g_autoptr(DzlShortcutChord) chord = NULL;
+
+  g_return_if_fail (DZL_IS_SHORTCUT_CONTROLLER (self));
+  g_return_if_fail (accel != NULL);
+
+  chord = dzl_shortcut_chord_new_from_string (accel);
+
+  if (chord != NULL)
+    {
+      DzlShortcutContext *context;
+      DzlShortcutManager *manager;
+      DzlShortcutTheme *theme;
+
+      /* Add the chord to our chord table for lookups */
+      if (priv->commands_table != NULL)
+        dzl_shortcut_chord_table_remove (priv->commands_table, chord);
+
+      /* Set the value in the theme so it can have overrides by users */
+      manager = dzl_shortcut_controller_get_manager (self);
+      theme = _dzl_shortcut_manager_get_internal_theme (manager);
+      dzl_shortcut_theme_set_chord_for_command (theme, NULL, chord, 0);
+
+      if (priv->widget != NULL)
+        {
+          context = _dzl_shortcut_theme_find_default_context_with_phase (theme, priv->widget, phase);
+          if (context && _dzl_shortcut_context_contains (context, chord))
+            dzl_shortcut_context_remove (context, accel);
+        }
+    }
+}
diff --git a/src/shortcuts/dzl-shortcut-controller.h b/src/shortcuts/dzl-shortcut-controller.h
index 73bd6d5..fd8e7af 100644
--- a/src/shortcuts/dzl-shortcut-controller.h
+++ b/src/shortcuts/dzl-shortcut-controller.h
@@ -60,6 +60,10 @@ gboolean                dzl_shortcut_controller_execute_command       (DzlShortc
                                                                        const gchar           *command);
 DZL_AVAILABLE_IN_ALL
 const DzlShortcutChord *dzl_shortcut_controller_get_current_chord     (DzlShortcutController *self);
+DZL_AVAILABLE_IN_3_34
+void                    dzl_shortcut_controller_remove_accel          (DzlShortcutController *self,
+                                                                       const gchar           *accel,
+                                                                       DzlShortcutPhase       phase);
 DZL_AVAILABLE_IN_ALL
 void                    dzl_shortcut_controller_add_command_action    (DzlShortcutController *self,
                                                                        const gchar           *command_id,