[gnome-control-center/wip/feborges/new-printers-panel] printers: add an empty state for the printer jobs dialog

[Felipe Borges <felipeborges src gnome org>]

commit 2961c866cc21522b24691ad61290365c8c878482
Author: Felipe Borges <feborges redhat com>
Date:   Fri Sep 25 15:18:13 2015 +0200

    printers: add an empty state for the printer jobs dialog

 panels/printers/jobs-dialog.ui   |  101 +++++++++++++++++++++++++++-----------
 panels/printers/pp-jobs-dialog.c |    4 ++
 2 files changed, 76 insertions(+), 29 deletions(-)
---
diff --git a/panels/printers/jobs-dialog.ui b/panels/printers/jobs-dialog.ui
index a3ea797..c47381d 100644
--- a/panels/printers/jobs-dialog.ui
+++ b/panels/printers/jobs-dialog.ui
@@ -33,35 +33,78 @@
       </object>
     </child>
     <child internal-child="vbox">
-     <object class="GtkBox" id="dialog-vbox1">
-       <property name="can_focus">False</property>
-       <property name="orientation">vertical</property>
-       <property name="border_width">0</property>
-       <child>
-         <object class="GtkScrolledWindow" id="scrolledwindow">
-          <property name="visible">True</property>
-           <property name="can_focus">True</property>
-           <property name="vexpand">True</property>
-           <property name="hscrollbar-policy">never</property>
-           <property name="shadow_type">none</property>
-           <child>
-             <object class="GtkListBox" id="jobs-listbox">
-               <property name="visible">True</property>
-               <property name="can-focus">True</property>
-               <property name="halign">fill</property>
-               <property name="valign">fill</property>
-               <property name="selection-mode">none</property>
-               <child>
-                 <placeholder/>
-               </child>
-             </object>
-           </child>
-         </object>
-         <packing>
-           <property name="expand">False</property>
-           <property name="fill">True</property>
-           <property name="position">0</property>
-         </packing>
+      <object class="GtkBox" id="dialog-vbox1">
+        <property name="can_focus">False</property>
+        <property name="border_width">0</property>
+        <child>
+          <object class="GtkStack" id="stack">
+            <property name="visible">True</property>
+            <child>
+              <object class="GtkScrolledWindow" id="scrolledwindow">
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="vexpand">True</property>
+                <property name="hscrollbar-policy">never</property>
+                <property name="shadow_type">none</property>
+                <child>
+                  <object class="GtkListBox" id="jobs-listbox">
+                    <property name="visible">True</property>
+                    <property name="can-focus">True</property>
+                    <property name="halign">fill</property>
+                    <property name="valign">fill</property>
+                    <property name="selection-mode">none</property>
+                    <child>
+                      <placeholder/>
+                    </child>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="name">list-jobs-page</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkBox" id="no-jobs-dialog">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="spacing">10</property>
+                <property name="orientation">vertical</property>
+                <property name="valign">center</property>
+                <child>
+                  <object class="GtkImage" id="no-printer-image">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="valign">start</property>
+                    <property name="pixel_size">64</property>
+                    <property name="icon_name">printer-symbolic</property>
+                    <style>
+                      <class name="dim-label"/>
+                    </style>
+                  </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="fill">False</property>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="no-printer-label">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">No Active Printer Jobs</property>
+                    <style>
+                      <class name="dim-label"/>
+                    </style>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="name">no-jobs-page</property>
+              </packing>
+            </child>
+          </object>
         </child>
       </object>
     </child>
diff --git a/panels/printers/pp-jobs-dialog.c b/panels/printers/pp-jobs-dialog.c
index fd4e60e..a8eca40 100644
--- a/panels/printers/pp-jobs-dialog.c
+++ b/panels/printers/pp-jobs-dialog.c
@@ -183,9 +183,13 @@ update_jobs_list_cb (cups_job_t *jobs,
   PpJobsDialog     *dialog = (PpJobsDialog *) user_data;
   GListStore       *store;
   gint              i;
+  GtkStack         *stack;
 
   store = g_list_store_new (pp_job_get_type ());
 
+  stack = (GtkStack*) gtk_builder_get_object (GTK_BUILDER (dialog->builder), "stack");
+  gtk_stack_set_visible_child_name (GTK_STACK (stack), num_of_jobs > 0 ? "list-jobs-page" : "no-jobs-page");
+
   if (dialog->num_jobs > 0)
     cupsFreeJobs (dialog->num_jobs, dialog->jobs);