From c3b56f70cd7305b1ddcc052cea808afb7b987856 Mon Sep 17 00:00:00 2001
From: Lars Uebernickel <lars.uebernickel@canonical.com>
Date: Sun, 12 Feb 2012 14:11:27 +0100
Subject: Only show print indicator when there are print jobs

Note: this doesn't fully implement the design spec yet, as the menu should stay
visible 5 seconds after the last print job finished.
---
 src/indicator-printers-menu.c | 24 ++++++++++++++++++++++++
 src/indicator-printers.c      | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)

(limited to 'src')

diff --git a/src/indicator-printers-menu.c b/src/indicator-printers-menu.c
index 58bd72a..bc98cf3 100644
--- a/src/indicator-printers-menu.c
+++ b/src/indicator-printers-menu.c
@@ -137,6 +137,25 @@ on_printer_item_activated (DbusmenuMenuitem *menuitem,
 }
 
 
+static void
+update_indicator_visibility (IndicatorPrintersMenu *self)
+{
+    GList *it;
+    gboolean is_visible = FALSE;
+
+    for (it = dbusmenu_menuitem_get_children (self->priv->root);
+         it;
+         it = g_list_next (it))
+    {
+        DbusmenuMenuitem *child = it->data;
+        if ((is_visible = dbusmenu_menuitem_property_get_bool (child, "visible")))
+            break;
+    }
+
+    dbusmenu_menuitem_property_set_bool (self->priv->root, "visible", is_visible);
+}
+
+
 static void
 update_printer_menuitem (IndicatorPrintersMenu *self,
                          const char *printer,
@@ -171,9 +190,13 @@ update_printer_menuitem (IndicatorPrintersMenu *self,
 
     if (njobs == 0) {
         dbusmenu_menuitem_property_set_bool (item, "visible", FALSE);
+        update_indicator_visibility (self);
         return;
     }
 
+    /* there are jobs for this printer. Make sure the indicator and the menu
+     * item for that printer are shown */
+    dbusmenu_menuitem_property_set_bool (self->priv->root, "visible", TRUE);
     dbusmenu_menuitem_property_set_bool (item, "visible", TRUE);
 
     switch (state) {
@@ -241,6 +264,7 @@ indicator_printers_menu_init (IndicatorPrintersMenu *self)
                                               IndicatorPrintersMenuPrivate);
 
     self->priv->root = dbusmenu_menuitem_new ();
+    dbusmenu_menuitem_property_set_bool (self->priv->root, "visible", FALSE);
 
     self->priv->printers = g_hash_table_new_full (g_str_hash,
                                                   g_str_equal,
diff --git a/src/indicator-printers.c b/src/indicator-printers.c
index 1a285e9..bcb0579 100644
--- a/src/indicator-printers.c
+++ b/src/indicator-printers.c
@@ -162,6 +162,19 @@ indicator_prop_change_cb (DbusmenuMenuitem *mi,
 }
 
 
+static void
+root_property_changed (DbusmenuMenuitem *mi,
+                       gchar *prop,
+                       GVariant *value,
+                       gpointer user_data)
+{
+    IndicatorObject *io = user_data;
+
+    if (properties_match (prop, "visible", value, G_VARIANT_TYPE_BOOLEAN))
+        indicator_object_set_visible (io, g_variant_get_boolean (value));
+}
+
+
 static gboolean
 new_indicator_item (DbusmenuMenuitem *newitem,
                     DbusmenuMenuitem *parent,
@@ -208,6 +221,26 @@ new_indicator_item (DbusmenuMenuitem *newitem,
 }
 
 
+static void
+root_changed (DbusmenuClient *client,
+              DbusmenuMenuitem *newroot,
+              gpointer user_data)
+{
+    IndicatorPrinters *indicator = user_data;
+    gboolean is_visible;
+
+    if (newroot) {
+        is_visible = dbusmenu_menuitem_property_get_bool (newroot, "visible");
+        g_signal_connect (newroot, "property-changed",
+                          G_CALLBACK (root_property_changed), indicator);
+    }
+    else
+        is_visible = FALSE;
+
+    indicator_object_set_visible (INDICATOR_OBJECT (indicator), is_visible);
+}
+
+
 static void
 indicator_printers_init (IndicatorPrinters *self)
 {
@@ -228,6 +261,7 @@ indicator_printers_init (IndicatorPrinters *self)
     dbusmenu_client_add_type_handler(client,
                                      "indicator-item",
                                      new_indicator_item);
+    g_signal_connect (client, "root-changed", G_CALLBACK (root_changed), self);
 
     image = indicator_image_helper ("printer-symbolic");
     gtk_widget_show (GTK_WIDGET (image));
@@ -236,6 +270,8 @@ indicator_printers_init (IndicatorPrinters *self)
     priv->entry.accessible_desc = "Printers";
     priv->entry.menu = GTK_MENU (g_object_ref_sink (menu));
     priv->entry.image = g_object_ref_sink (image);
+
+    indicator_object_set_visible (INDICATOR_OBJECT (self), FALSE);
 }
 
 
-- 
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