[gthumb] template editor dialog: added some utilities

[Paolo Bacchilega <paobac src gnome org>]

commit 07378ba3dc833b0403bb280e1958abffe6544d92
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Fri May 21 07:44:09 2021 +0200

    template editor dialog: added some utilities

 gthumb/gth-template-editor-dialog.c | 47 ++++++++++++++++++++++++++++++++++++-
 gthumb/gth-template-editor-dialog.h |  6 +++++
 2 files changed, 52 insertions(+), 1 deletion(-)
---
diff --git a/gthumb/gth-template-editor-dialog.c b/gthumb/gth-template-editor-dialog.c
index 291770e9..32a78e0b 100644
--- a/gthumb/gth-template-editor-dialog.c
+++ b/gthumb/gth-template-editor-dialog.c
@@ -42,6 +42,7 @@ struct _GthTemplateEditorDialogPrivate {
        gulong               update_id;
        TemplatePreviewFunc  preview_func;
        gpointer             preview_data;
+       TemplateEvalFunc     preview_cb;
        TemplateFlags        template_flags;
 };
 
@@ -88,6 +89,7 @@ gth_template_editor_dialog_init (GthTemplateEditorDialog *self)
        self->priv->update_id = 0;
        self->priv->preview_func = NULL;
        self->priv->preview_data = NULL;
+       self->priv->preview_cb = NULL;
        self->priv->template_flags = 0;
 }
 
@@ -221,7 +223,12 @@ _gth_template_editor_update_preview (GthTemplateEditorDialog *self)
        char *preview;
 
        template = gth_template_editor_dialog_get_template (self);
-       if (self->priv->preview_func != NULL)
+       if (self->priv->preview_cb != NULL)
+               preview = _g_template_eval (template,
+                                           self->priv->template_flags | TEMPLATE_FLAGS_PREVIEW,
+                                           self->priv->preview_cb,
+                                           self->priv->preview_data);
+       else if (self->priv->preview_func != NULL)
                preview = self->priv->preview_func (template,
                                                    self->priv->template_flags,
                                                    self->priv->preview_data);
@@ -554,4 +561,42 @@ gth_template_editor_dialog_set_preview_func (GthTemplateEditorDialog  *self,
 {
        self->priv->preview_func = func;
        self->priv->preview_data = user_data;
+       self->priv->preview_cb = NULL;
+}
+
+
+void
+gth_template_editor_dialog_set_preview_cb (GthTemplateEditorDialog  *self,
+                                          TemplateEvalFunc          func,
+                                          gpointer                  user_data)
+{
+       self->priv->preview_func = NULL;
+       self->priv->preview_cb = func;
+       self->priv->preview_data = user_data;
+}
+
+
+void
+gth_template_editor_dialog_default_response (GtkDialog *dialog,
+                                            int        response_id,
+                                            gpointer   user_data)
+{
+       GtkEntry *entry = GTK_ENTRY (user_data);
+       char     *value;
+
+       switch (response_id) {
+       case GTK_RESPONSE_OK:
+               value = gth_template_editor_dialog_get_template (GTH_TEMPLATE_EDITOR_DIALOG (dialog));
+               if (value != NULL) {
+                       gtk_entry_set_text (entry, value);
+                       gtk_widget_destroy (GTK_WIDGET (dialog));
+
+                       g_free (value);
+               }
+               break;
+
+       default:
+               gtk_widget_destroy (GTK_WIDGET (dialog));
+               break;
+       }
 }
diff --git a/gthumb/gth-template-editor-dialog.h b/gthumb/gth-template-editor-dialog.h
index 7e7b37f6..75a91fba 100644
--- a/gthumb/gth-template-editor-dialog.h
+++ b/gthumb/gth-template-editor-dialog.h
@@ -59,6 +59,12 @@ char *      gth_template_editor_dialog_get_template  (GthTemplateEditorDialog  *s
 void        gth_template_editor_dialog_set_preview_func (GthTemplateEditorDialog  *self,
                                                         TemplatePreviewFunc       func,
                                                         gpointer                  user_data);
+void        gth_template_editor_dialog_set_preview_cb   (GthTemplateEditorDialog  *self,
+                                                        TemplateEvalFunc          func,
+                                                        gpointer                  user_data);
+void        gth_template_editor_dialog_default_response (GtkDialog                *dialog,
+                                                        int                       response_id,
+                                                        gpointer                  user_data);
 
 G_END_DECLS