New halper function to update the sensitivity of the commands.

* e-search-bar.c (update_sensitivity): New halper function to
update the sensitivity of the commands.
(entry_changed_cb): New callback to make the activate_button and
the "Find Now" verb sensitive only if the entry has some contents.
(activate_by_subitems): Connect the callback here.
(setup_standard_verbs): Call update_sensitivity() here.

svn path=/trunk/; revision=16199

2 files changed, 46 insertions, 0 deletions

diff --git a/widgets/misc/ChangeLog b/widgets/misc/ChangeLog
index b2880a8559..9ec923e5ab 100644
--- a/widgets/misc/ChangeLog
+++ b/widgets/misc/ChangeLog
@@ -1,5 +1,14 @@
 2002-03-18  Ettore Perazzoli  <ettore@ximian.com>
 
+	* e-search-bar.c (update_sensitivity): New halper function to
+	update the sensitivity of the commands.
+	(entry_changed_cb): New callback to make the activate_button and
+	the "Find Now" verb sensitive only if the entry has some contents.
+	(activate_by_subitems): Connect the callback here.
+	(setup_standard_verbs): Call update_sensitivity() here.
+
+2002-03-18  Ettore Perazzoli  <ettore@ximian.com>
+
 	* e-search-bar.c (init): Init clear_button to NULL.
 	(add_button): New helper function to add a button to the search
 	bar with the right spacing etc.
diff --git a/widgets/misc/e-search-bar.c b/widgets/misc/e-search-bar.c
index d70db2b9cc..b8bda3888c 100644
--- a/widgets/misc/e-search-bar.c
+++ b/widgets/misc/e-search-bar.c
@@ -96,6 +96,31 @@ emit_menu_activated (ESearchBar *esb, int item)
 			 item);
 }
 
+
+/* Utility functions.  */
+
+static void
+update_sensitivity (ESearchBar *search_bar)
+{
+	const char *text;
+
+	text = gtk_entry_get_text (GTK_ENTRY (search_bar->entry));
+
+	if (text != NULL && text[0] != '\0') {
+		if (search_bar->ui_component != NULL)
+			bonobo_ui_component_set_prop (search_bar->ui_component,
+						      "/commands/ESearchBar:SearchNow",
+						      "sensitive", "1", NULL);
+		gtk_widget_set_sensitive (search_bar->activate_button, TRUE);
+	} else {
+		if (search_bar->ui_component != NULL)
+			bonobo_ui_component_set_prop (search_bar->ui_component,
+						      "/commands/ESearchBar:SearchNow",
+						      "sensitive", "0", NULL);
+		gtk_widget_set_sensitive (search_bar->activate_button, FALSE);
+	}
+}
+
 /* This implements the "clear" action, i.e. clears the text and then emits
  * ::search_activated.  */
 
@@ -138,6 +163,9 @@ setup_standard_verbs (ESearchBar *search_bar)
 				      clear_verb_cb, search_bar);
 	bonobo_ui_component_add_verb (search_bar->ui_component, "ESearchBar:SearchNow",
 				      search_now_verb_cb, search_bar);
+
+	/* Make sure the entries are created with the correct sensitivity.  */
+	update_sensitivity (search_bar);
 }
 
 /* Callbacks -- The verbs for all the definable items.  */
@@ -168,6 +196,13 @@ entry_activated_cb (GtkWidget *widget,
 }
 
 static void
+entry_changed_cb (GtkWidget *widget,
+		  ESearchBar *esb)
+{
+	update_sensitivity (esb);
+}
+
+static void
 subitem_activated_cb (GtkWidget *widget, ESearchBar *esb)
 {
 	gint id, subid;
@@ -199,6 +234,8 @@ activate_by_subitems (ESearchBar *esb, gint item_id, ESearchBarSubitem *subitems
 			esb->entry = gtk_entry_new();
 			gtk_widget_set_usize (esb->entry, 4, -1);
 			gtk_object_ref (GTK_OBJECT (esb->entry));
+			gtk_signal_connect (GTK_OBJECT (esb->entry), "changed",
+					    GTK_SIGNAL_FUNC (entry_changed_cb), esb);
 			gtk_signal_connect (GTK_OBJECT (esb->entry), "activate",
 					    GTK_SIGNAL_FUNC (entry_activated_cb), esb);
 			gtk_container_add (GTK_CONTAINER (esb->entry_box), esb->entry);