[metacity] theme-viewer: add two command-line options

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 03c8dbe789b587dd6a9c6fa6279c4204748be09b
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Nov 28 19:06:24 2016 +0200

    theme-viewer: add two command-line options

 theme-viewer/theme-viewer-main.c   |   77 +++++++++++++++++++++++++++++++++++-
 theme-viewer/theme-viewer-window.c |   16 +++++++-
 theme-viewer/theme-viewer-window.h |    9 ++++-
 3 files changed, 99 insertions(+), 3 deletions(-)
---
diff --git a/theme-viewer/theme-viewer-main.c b/theme-viewer/theme-viewer-main.c
index 08b55f8..1761cda 100644
--- a/theme-viewer/theme-viewer-main.c
+++ b/theme-viewer/theme-viewer-main.c
@@ -18,9 +18,61 @@
 #include "config.h"
 
 #include <glib/gi18n.h>
+#include <stdlib.h>
 
 #include "theme-viewer-window.h"
 
+static gchar *theme_type = NULL;
+static gchar *theme_name = NULL;
+
+static GOptionEntry entries[] =
+{
+  {
+    "theme-type", 0, G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &theme_type,
+    N_("Theme type to use (gtk or metacity)"), N_("TYPE")
+  },
+  {
+    "theme-name", 0, G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &theme_name,
+    N_("Theme name to use"), N_("NAME")
+  },
+  {
+    NULL
+  }
+};
+
+static gboolean
+parse_arguments (gint    *argc,
+                 gchar ***argv)
+{
+  GOptionContext *context;
+  GOptionGroup *gtk_group;
+  GError *error;
+
+  context = g_option_context_new (NULL);
+  gtk_group = gtk_get_option_group (FALSE);
+
+  g_option_context_add_main_entries (context, entries, NULL);
+  g_option_context_add_group (context, gtk_group);
+
+  error = NULL;
+  if (g_option_context_parse (context, argc, argv, &error) == FALSE)
+    {
+      g_warning ("Failed to parse command line arguments: %s", error->message);
+      g_error_free (error);
+
+      g_option_context_free (context);
+
+      g_clear_pointer (&theme_type, g_free);
+      g_clear_pointer (&theme_name, g_free);
+
+      return FALSE;
+    }
+
+  g_option_context_free (context);
+
+  return TRUE;
+}
+
 static void
 destroy_cb (GtkWidget *widget)
 {
@@ -38,12 +90,35 @@ main (int argc, char **argv)
 
   gtk_init (&argc, &argv);
 
+  if (!parse_arguments (&argc, &argv))
+    return EXIT_FAILURE;
+
   window = theme_viewer_window_new ();
-  gtk_window_present (GTK_WINDOW (window));
+
+  if (theme_type != NULL)
+    {
+      MetaThemeType type;
+
+      type = META_THEME_TYPE_GTK;
+      if (g_strcmp0 (theme_type, "metacity") == 0)
+        type = META_THEME_TYPE_METACITY;
+
+      theme_viewer_window_set_theme_type (THEME_VIEWER_WINDOW (window), type);
+    }
+
+  if (theme_name != NULL)
+    {
+      theme_viewer_window_set_theme_name (THEME_VIEWER_WINDOW (window),
+                                          theme_name);
+    }
 
   g_signal_connect (window, "destroy", G_CALLBACK (destroy_cb), NULL);
+  gtk_window_present (GTK_WINDOW (window));
 
   gtk_main ();
 
+  g_clear_pointer (&theme_type, g_free);
+  g_clear_pointer (&theme_name, g_free);
+
   return 0;
 }
diff --git a/theme-viewer/theme-viewer-window.c b/theme-viewer/theme-viewer-window.c
index 70f30da..bbf10b3 100644
--- a/theme-viewer/theme-viewer-window.c
+++ b/theme-viewer/theme-viewer-window.c
@@ -18,7 +18,6 @@
 #include "config.h"
 
 #include <glib/gi18n.h>
-#include <libmetacity/meta-theme.h>
 #include <time.h>
 
 #include "theme-viewer-window.h"
@@ -931,3 +930,18 @@ theme_viewer_window_new (void)
                        "title", _("Metacity Theme Viewer"),
                        NULL);
 }
+
+void
+theme_viewer_window_set_theme_type (ThemeViewerWindow *window,
+                                    MetaThemeType      theme_type)
+{
+  gtk_combo_box_set_active (GTK_COMBO_BOX (window->type_combo_box), theme_type);
+}
+
+void
+theme_viewer_window_set_theme_name (ThemeViewerWindow *window,
+                                    const gchar       *theme_name)
+{
+  gtk_combo_box_set_active_id (GTK_COMBO_BOX (window->theme_combo_box),
+                               theme_name);
+}
diff --git a/theme-viewer/theme-viewer-window.h b/theme-viewer/theme-viewer-window.h
index 0912b44..e002fdf 100644
--- a/theme-viewer/theme-viewer-window.h
+++ b/theme-viewer/theme-viewer-window.h
@@ -19,6 +19,7 @@
 #define THEME_VIEWER_WINDOW_H
 
 #include <gtk/gtk.h>
+#include <libmetacity/meta-theme.h>
 
 G_BEGIN_DECLS
 
@@ -26,7 +27,13 @@ G_BEGIN_DECLS
 G_DECLARE_FINAL_TYPE (ThemeViewerWindow, theme_viewer_window,
                       THEME_VIEWER, WINDOW, GtkWindow)
 
-GtkWidget *theme_viewer_window_new (void);
+GtkWidget *theme_viewer_window_new            (void);
+
+void       theme_viewer_window_set_theme_type (ThemeViewerWindow *window,
+                                               MetaThemeType      theme_type);
+
+void       theme_viewer_window_set_theme_name (ThemeViewerWindow *window,
+                                               const gchar       *theme_name);
 
 G_END_DECLS