+ vlc_object_release (provider);
+}
+
+
+#undef dialog_Question
+/**
+ * Asks a total (Yes/No/Cancel) question through the user interface.
+ * @param obj VLC object emitting the question
+ * @param title dialog box title
+ * @param text dialog box text
+ * @param yes first choice/button text
+ * @param no second choice/button text
+ * @param cancel third answer/button text, or NULL if no third option
+ * @return 0 if the user could not answer the question (e.g. there is no UI),
+ * 1, 2 resp. 3 if the user pressed the first, second resp. third button.
+ */
+int dialog_Question (vlc_object_t *obj, const char *title, const char *text,
+ const char *yes, const char *no, const char *cancel)
+{
+ if (obj->i_flags & OBJECT_FLAGS_NOINTERACT)
+ return 0;
+
+ vlc_object_t *provider = dialog_GetProvider (obj);
+ if (provider == NULL)
+ return 0;
+
+ dialog_question_t dialog = { title, text, yes, no, cancel, 0, };
+ var_SetAddress (provider, "dialog-question", &dialog);
+ vlc_object_release (provider);
+ return dialog.answer;
+}
+
+#undef dialog_ProgressCreate
+/**
+ * Creates a progress bar dialog.
+ */
+dialog_progress_bar_t *
+dialog_ProgressCreate (vlc_object_t *obj, const char *title,
+ const char *message, const char *cancel)
+{
+ if (obj->i_flags & OBJECT_FLAGS_NOINTERACT)
+ return NULL;
+
+ vlc_object_t *provider = dialog_GetProvider (obj);
+ if (provider == NULL)
+ return NULL;
+
+ dialog_progress_bar_t *dialog = malloc (sizeof (*dialog));
+ if (dialog != NULL)
+ {
+ dialog->title = title;
+ dialog->message = message;
+ dialog->cancel = cancel;
+ var_SetAddress (provider, "dialog-progress-bar", dialog);
+#ifndef NDEBUG
+ dialog->title = dialog->message = dialog->cancel = NULL;
+#endif
+ assert (dialog->pf_update);
+ assert (dialog->pf_check);
+ assert (dialog->pf_destroy);
+ }
+
+ /* FIXME: This could conceivably crash if the dialog provider is destroyed
+ * before the dialog user. Holding the provider does not help, as it only
+ * protects object variable operations. For instance, it does not prevent
+ * unloading of the interface plugin. In the short term, the only solution
+ * is to not use progress dialog after deinitialization of the interfaces.
+ */
+ vlc_object_release (provider);
+ return dialog;
+}
+
+void dialog_ProgressDestroy (dialog_progress_bar_t *dialog)
+{
+ assert (dialog);
+
+ dialog->pf_destroy (dialog->p_sys);
+ free (dialog);
+}
+
+void dialog_ProgressSet (dialog_progress_bar_t *dialog, const char *text,
+ float value)
+{
+ assert (dialog);
+
+ dialog->pf_update (dialog->p_sys, text, value);
+}
+
+bool dialog_ProgressCancelled (dialog_progress_bar_t *dialog)
+{
+ assert (dialog);
+
+ return dialog->pf_check (dialog->p_sys);
+}
+
+#undef dialog_ExtensionUpdate
+int dialog_ExtensionUpdate (vlc_object_t *obj, extension_dialog_t *dialog)
+{
+ assert (obj);
+ assert (dialog);
+
+ vlc_object_t *dp = dialog_GetProvider(obj);
+ if (!dp)
+ {
+ msg_Warn (obj, "Dialog provider is not set, can't update dialog '%s'",
+ dialog->psz_title);
+ return VLC_EGENERIC;
+ }
+
+ // Signaling the dialog provider
+ int ret = var_SetAddress (dp, "dialog-extension", dialog);
+
+ vlc_object_release (dp);
+ return ret;