[gnome-builder/wip/greeter] greeter: hide groups when no items are visible

[Christian Hergert <chergert src gnome org>]

commit 2244881900d76f4a4fc6d3c168b2e2cdc3a4c832
Author: Christian Hergert <christian hergert me>
Date:   Sun May 10 13:54:51 2015 -0700

    greeter: hide groups when no items are visible

 data/ui/gb-greeter-window.ui    |  106 +++++++++++++++++++++++----------------
 src/greeter/gb-greeter-window.c |   30 +++++++++++
 2 files changed, 92 insertions(+), 44 deletions(-)
---
diff --git a/data/ui/gb-greeter-window.ui b/data/ui/gb-greeter-window.ui
index 4d14d12..dfed5bb 100644
--- a/data/ui/gb-greeter-window.ui
+++ b/data/ui/gb-greeter-window.ui
@@ -91,36 +91,48 @@
                   <object class="GtkBox">
                     <property name="margin-top">32</property>
                     <property name="margin-bottom">32</property>
-                    <property name="spacing">6</property>
+                    <property name="spacing">32</property>
                     <property name="orientation">vertical</property>
                     <property name="visible">true</property>
                     <child>
-                      <object class="GtkLabel" id="my_projects_label">
-                        <property name="halign">center</property>
-                        <property name="label" translatable="yes">My Projects</property>
+                      <object class="GtkBox" id="my_projects_container">
+                        <property name="orientation">vertical</property>
+                        <property name="spacing">6</property>
                         <property name="visible">true</property>
-                        <property name="xalign">0.0</property>
-                        <style>
-                          <class name="dim-label"/>
-                        </style>
-                      </object>
-                    </child>
-                    <child>
-                      <object class="GtkFrame" id="my_projects_frame">
-                        <property name="halign">center</property>
-                        <property name="visible">true</property>
-                        <property name="shadow-type">in</property>
                         <child>
-                          <object class="GbScrolledWindow">
-                            <property name="min-content-height">100</property>
-                            <property name="min-content-width">475</property>
-                            <property name="max-content-width">600</property>
+                          <object class="GtkLabel" id="my_projects_label">
+                            <property name="halign">center</property>
+                            <property name="label" translatable="yes">My Projects</property>
+                            <property name="visible">true</property>
+                            <property name="xalign">0.0</property>
+                            <style>
+                              <class name="dim-label"/>
+                            </style>
+                          </object>
+                        </child>
+                        <child>
+                          <object class="GtkFrame" id="my_projects_frame">
+                            <property name="halign">center</property>
                             <property name="visible">true</property>
-                            <property name="vscrollbar-policy">never</property>
+                            <property name="shadow-type">in</property>
                             <child>
-                              <object class="GtkListBox" id="my_projects_list_box">
+                              <object class="GbScrolledWindow">
+                                <property name="min-content-height">100</property>
+                                <property name="min-content-width">475</property>
+                                <property name="max-content-width">600</property>
                                 <property name="visible">true</property>
-                                <property name="selection-mode">none</property>
+                                <property name="vscrollbar-policy">never</property>
+                                <child>
+                                  <object class="GtkListBox" id="my_projects_list_box">
+                                    <property name="visible">true</property>
+                                    <property name="selection-mode">none</property>
+                                    <child type="placeholder">
+                                      <object class="GtkLabel" id="my_projects_placeholder">
+                                        <property name="visible">true</property>
+                                      </object>
+                                    </child>
+                                  </object>
+                                </child>
                               </object>
                             </child>
                           </object>
@@ -128,33 +140,39 @@
                       </object>
                     </child>
                     <child>
-                      <object class="GtkLabel" id="other_projects_label">
-                        <property name="halign">center</property>
-                        <property name="label" translatable="yes">Other Projects</property>
-                        <property name="margin-top">32</property>
-                        <property name="visible">true</property>
-                        <property name="xalign">0.0</property>
-                        <style>
-                          <class name="dim-label"/>
-                        </style>
-                      </object>
-                    </child>
-                    <child>
-                      <object class="GtkFrame" id="other_projects_frame">
-                        <property name="halign">center</property>
-                        <property name="shadow-type">in</property>
+                      <object class="GtkBox" id="other_projects_container">
+                        <property name="orientation">vertical</property>
+                        <property name="spacing">6</property>
                         <property name="visible">true</property>
                         <child>
-                          <object class="GbScrolledWindow">
-                            <property name="min-content-height">100</property>
-                            <property name="min-content-width">300</property>
-                            <property name="max-content-width">600</property>
+                          <object class="GtkLabel" id="other_projects_label">
+                            <property name="halign">center</property>
+                            <property name="label" translatable="yes">Other Projects</property>
+                            <property name="visible">true</property>
+                            <property name="xalign">0.0</property>
+                            <style>
+                              <class name="dim-label"/>
+                            </style>
+                          </object>
+                        </child>
+                        <child>
+                          <object class="GtkFrame" id="other_projects_frame">
+                            <property name="halign">center</property>
+                            <property name="shadow-type">in</property>
                             <property name="visible">true</property>
-                            <property name="vscrollbar-policy">never</property>
                             <child>
-                              <object class="GtkListBox" id="other_projects_list_box">
+                              <object class="GbScrolledWindow">
+                                <property name="min-content-height">100</property>
+                                <property name="min-content-width">300</property>
+                                <property name="max-content-width">600</property>
                                 <property name="visible">true</property>
-                                <property name="selection-mode">none</property>
+                                <property name="vscrollbar-policy">never</property>
+                                <child>
+                                  <object class="GtkListBox" id="other_projects_list_box">
+                                    <property name="visible">true</property>
+                                    <property name="selection-mode">none</property>
+                                  </object>
+                                </child>
                               </object>
                             </child>
                           </object>
diff --git a/src/greeter/gb-greeter-window.c b/src/greeter/gb-greeter-window.c
index e875175..3e9194e 100644
--- a/src/greeter/gb-greeter-window.c
+++ b/src/greeter/gb-greeter-window.c
@@ -37,7 +37,10 @@ struct _GbGreeterWindow
   IdePatternSpec       *pattern_spec;
 
   GtkWidget            *header_bar;
+  GtkBox               *my_projects_container;
+  GtkLabel             *my_projects_placeholder;
   GtkListBox           *my_projects_list_box;
+  GtkBox               *other_projects_container;
   GtkListBox           *other_projects_list_box;
   GtkSearchEntry       *search_entry;
 };
@@ -61,10 +64,23 @@ gb_greeter_window_get_recent_projects (GbGreeterWindow *self)
 }
 
 static void
+foreach_cb (GtkWidget *widget,
+            gpointer   user_data)
+{
+  gboolean *visible = user_data;
+
+  g_assert (GB_IS_GREETER_PROJECT_ROW (widget));
+
+  if (gtk_widget_get_child_visible (widget))
+    *visible = TRUE;
+}
+
+static void
 gb_greeter_window__search_entry_changed (GbGreeterWindow *self,
                                          GtkSearchEntry  *search_entry)
 {
   const gchar *text;
+  gboolean visible;
 
   g_assert (GB_IS_GREETER_WINDOW (self));
   g_assert (GTK_IS_SEARCH_ENTRY (search_entry));
@@ -77,7 +93,18 @@ gb_greeter_window__search_entry_changed (GbGreeterWindow *self,
     self->pattern_spec = ide_pattern_spec_new (text);
 
   gtk_list_box_invalidate_filter (self->my_projects_list_box);
+  visible = FALSE;
+  gtk_container_foreach (GTK_CONTAINER (self->my_projects_list_box),
+                         foreach_cb,
+                         &visible);
+  gtk_widget_set_visible (GTK_WIDGET (self->my_projects_container), visible);
+
   gtk_list_box_invalidate_filter (self->other_projects_list_box);
+  visible = FALSE;
+  gtk_container_foreach (GTK_CONTAINER (self->other_projects_list_box),
+                         foreach_cb,
+                         &visible);
+  gtk_widget_set_visible (GTK_WIDGET (self->other_projects_container), visible);
 }
 
 static void
@@ -251,7 +278,10 @@ gb_greeter_window_class_init (GbGreeterWindowClass *klass)
 
   gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/builder/ui/gb-greeter-window.ui");
   gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, header_bar);
+  gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, my_projects_container);
   gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, my_projects_list_box);
+  gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, my_projects_placeholder);
+  gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, other_projects_container);
   gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, other_projects_list_box);
   gtk_widget_class_bind_template_child (widget_class, GbGreeterWindow, search_entry);