added support for a callback function to set the icons.

2000-03-31  Damon Chaplin  <damon@helixcode.com>

	* widgets/shortcut-bar/e-shortcut-bar.[hc]: added support for a
	callback function to set the icons.

	* widgets/shortcut-bar/test-shortcut-bar.c: updated to use the
	callback function.

svn path=/trunk/; revision=2268

3 files changed, 77 insertions, 41 deletions

diff --git a/widgets/shortcut-bar/e-shortcut-bar.c b/widgets/shortcut-bar/e-shortcut-bar.c
index 6225229d53..daa6bfde59 100644
--- a/widgets/shortcut-bar/e-shortcut-bar.c
+++ b/widgets/shortcut-bar/e-shortcut-bar.c
@@ -44,24 +44,9 @@ static GtkTargetEntry target_table[] = {
 };
 static guint n_targets = sizeof(target_table) / sizeof(target_table[0]);
 
-typedef struct _EShortcutBarBuiltinType  EShortcutBarBuiltinType;
-struct _EShortcutBarBuiltinType {
-	gchar *name;
-	gchar *filename;
-	GdkPixbuf *image;
-};
-
-EShortcutBarBuiltinType e_shortcut_bar_builtin_types[] = {
-	{ "folder:",	"evolution/evolution-inbox.png",	NULL },
-	{ "calendar:",	"evolution/evolution-calendar.png",	NULL },
-	{ "todo:",	"evolution/evolution-tasks.png",	NULL },
-	{ "contacts:",	"evolution/evolution-contacts.png",	NULL }
-};
-static gint e_shortcut_bar_num_builtin_types = sizeof (e_shortcut_bar_builtin_types) / sizeof (EShortcutBarBuiltinType);
-
-gboolean e_shortcut_bar_default_type_image_loaded = FALSE;
-GdkPixbuf *e_shortcut_bar_default_type_image = NULL;
-gchar *e_shortcut_bar_default_type_filename = "gnome-balsa2.png";
+gboolean e_shortcut_bar_default_icon_loaded = FALSE;
+GdkPixbuf *e_shortcut_bar_default_icon = NULL;
+gchar *e_shortcut_bar_default_icon_filename = "gnome-folder.png";
 
 static void e_shortcut_bar_class_init (EShortcutBarClass *class);
 static void e_shortcut_bar_init (EShortcutBar *shortcut_bar);
@@ -517,32 +502,34 @@ e_shortcut_bar_stop_editing (GtkWidget *button,
 }
 
 
+/* Sets the callback which is called to return the icon to use for a particular
+   URL. */
+void
+e_shortcut_bar_set_icon_callback	(EShortcutBar	 *shortcut_bar,
+					 EShortcutBarIconCallback cb)
+{
+	shortcut_bar->icon_callback = cb;
+}
+
+
 static GdkPixbuf *
 e_shortcut_bar_get_image_from_url (EShortcutBar *shortcut_bar,
 				   gchar *item_url)
 {
-	gchar *method_terminator;
-	gint method_len, i;
-
-	method_terminator = strchr (item_url, ':');
-	if (method_terminator) {
-		method_len = method_terminator - item_url + 1;
-
-		/* Check if it is a builtin type. */
-		for (i = 0; i < e_shortcut_bar_num_builtin_types; i++) {
-			if (!strncmp (item_url, e_shortcut_bar_builtin_types[i].name, method_len)) {
-				if (!e_shortcut_bar_builtin_types[i].image)
-					e_shortcut_bar_builtin_types[i].image = e_shortcut_bar_load_image (e_shortcut_bar_builtin_types[i].filename);
-				return e_shortcut_bar_builtin_types[i].image;
-			}
+	GdkPixbuf *icon = NULL;
+
+	if (shortcut_bar->icon_callback)
+		icon = (*shortcut_bar->icon_callback) (shortcut_bar, item_url);
+
+	if (!icon) {
+		if (!e_shortcut_bar_default_icon_loaded) {
+			e_shortcut_bar_default_icon_loaded = TRUE;
+			e_shortcut_bar_default_icon = e_shortcut_bar_load_image (e_shortcut_bar_default_icon_filename);
 		}
+		icon = e_shortcut_bar_default_icon;
 	}
 
-	if (!e_shortcut_bar_default_type_image_loaded) {
-		e_shortcut_bar_default_type_image_loaded = TRUE;
-		e_shortcut_bar_default_type_image = e_shortcut_bar_load_image (e_shortcut_bar_default_type_filename);
-	}
-	return e_shortcut_bar_default_type_image;
+	return icon;
 }
 
 
diff --git a/widgets/shortcut-bar/e-shortcut-bar.h b/widgets/shortcut-bar/e-shortcut-bar.h
index ff7702f869..0164bf1c94 100644
--- a/widgets/shortcut-bar/e-shortcut-bar.h
+++ b/widgets/shortcut-bar/e-shortcut-bar.h
@@ -37,6 +37,12 @@ extern "C" {
  * window so users can easily access items such as folders and files.
  */
 
+typedef struct _EShortcutBar       EShortcutBar;
+typedef struct _EShortcutBarClass  EShortcutBarClass;
+
+
+typedef GdkPixbuf* (*EShortcutBarIconCallback)   (EShortcutBar *shortcut_bar,
+						  gchar	       *url);
 
 /* This contains information on one group. */
 typedef struct _EShortcutBarGroup   EShortcutBarGroup;
@@ -55,9 +61,6 @@ struct _EShortcutBarGroup
 #define E_IS_SHORTCUT_BAR(obj)       GTK_CHECK_TYPE (obj, e_shortcut_bar_get_type ())
 
 
-typedef struct _EShortcutBar       EShortcutBar;
-typedef struct _EShortcutBarClass  EShortcutBarClass;
-
 struct _EShortcutBar
 {
 	EGroupBar group_bar;
@@ -65,6 +68,10 @@ struct _EShortcutBar
 	/* This is an array of EShortcutBarGroup elements. */
 	GArray *groups;
 
+	/* The callback which the application sets to return the icon to use
+	   for a given URL. */
+	EShortcutBarIconCallback icon_callback;
+
 	gchar *dragged_url;
 	gchar *dragged_name;
 };
@@ -107,6 +114,12 @@ void	   e_shortcut_bar_remove_item		(EShortcutBar	 *shortcut_bar,
 						 gint		  group_num,
 						 gint		  item_num);
 
+/* Sets the callback which is called to return the icon to use for a particular
+   URL. This callback must be set before any items are added. If the callback
+   returns NULL the default icon is used. */
+void	   e_shortcut_bar_set_icon_callback	(EShortcutBar	 *shortcut_bar,
+						 EShortcutBarIconCallback cb);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff --git a/widgets/shortcut-bar/test-shortcut-bar.c b/widgets/shortcut-bar/test-shortcut-bar.c
index 2018d614d1..250704d227 100644
--- a/widgets/shortcut-bar/test-shortcut-bar.c
+++ b/widgets/shortcut-bar/test-shortcut-bar.c
@@ -31,12 +31,19 @@
 #include "e-shortcut-bar.h"
 
 #define NUM_SHORTCUT_TYPES 5
-gchar *shortcut_types[] = {
+gchar *shortcut_types[NUM_SHORTCUT_TYPES] = {
 	"folder:", "file:", "calendar:", "todo:", "contacts:"
 };
+gchar *icon_filenames[NUM_SHORTCUT_TYPES] = {
+	"gnome-balsa2.png", "gnome-folder.png", "gnome-calendar.png",
+	"gnome-cromagnon.png", "gnome-ccthemes.png"
+};
+GdkPixbuf *icon_pixbufs[NUM_SHORTCUT_TYPES];
 
 GtkWidget *main_label;
 
+static GdkPixbuf* icon_callback (EShortcutBar *shortcut_bar,
+				 gchar	      *url);
 static void on_main_label_size_allocate (GtkWidget *widget,
 					 GtkAllocation *allocation,
 					 gpointer data);
@@ -74,6 +81,8 @@ int
 main (int argc, char *argv[])
 {
 	GtkWidget *window, *hpaned, *shortcut_bar;
+	gchar *pathname;
+	gint i;
 
 	gnome_init ("test-shortcut-bar", "0.1", argc, argv);
 
@@ -94,6 +103,8 @@ main (int argc, char *argv[])
 	shortcut_bar = e_shortcut_bar_new ();
 	gtk_paned_pack1 (GTK_PANED (hpaned), shortcut_bar, FALSE, TRUE);
 	gtk_widget_show (shortcut_bar);
+	e_shortcut_bar_set_icon_callback (E_SHORTCUT_BAR (shortcut_bar),
+					  icon_callback);
 
 #if 0
 	gtk_container_set_border_width (GTK_CONTAINER (shortcut_bar), 4);
@@ -113,6 +124,15 @@ main (int argc, char *argv[])
 	gtk_widget_pop_visual ();
 	gtk_widget_pop_colormap ();
 
+	/* Load our default icons. */
+	for (i = 0; i < NUM_SHORTCUT_TYPES; i++) {
+		pathname = gnome_pixmap_file (icon_filenames[i]);
+		if (pathname)
+			icon_pixbufs[i] = gdk_pixbuf_new_from_file (pathname);
+		else
+			icon_pixbufs[i] = NULL;
+	}
+
 	add_test_groups (E_SHORTCUT_BAR (shortcut_bar));
 
 	gtk_signal_connect (GTK_OBJECT (shortcut_bar), "item_selected",
@@ -125,6 +145,22 @@ main (int argc, char *argv[])
 }
 
 
+static GdkPixbuf*
+icon_callback (EShortcutBar *shortcut_bar,
+	       gchar	    *url)
+{
+	gint i;
+
+	for (i = 0; i < NUM_SHORTCUT_TYPES; i++) {
+		if (!strncmp (url, shortcut_types[i],
+			      strlen (shortcut_types[i]))) {
+			return icon_pixbufs[i];
+		}
+	}
+
+	return NULL;
+}
+
 static void
 on_main_label_size_allocate (GtkWidget *widget,
 			     GtkAllocation *allocation,