[gnome-boxes] wizard-window: API to show file chooser widget

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 90f263657f65754f2c71324ccbc0e1045b8e08b9
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 3 17:31:11 2014 +0000

    wizard-window: API to show file chooser widget
    
    Add a view and API to show file chooser to user.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741046

 data/ui/wizard-window.ui |   12 ++++++++++++
 src/wizard-window.vala   |   25 ++++++++++++++++++++++++-
 2 files changed, 36 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/wizard-window.ui b/data/ui/wizard-window.ui
index 76c7e76..6fec5ba 100644
--- a/data/ui/wizard-window.ui
+++ b/data/ui/wizard-window.ui
@@ -71,6 +71,18 @@
               </packing>
             </child>
 
+            <child>
+              <object class="GtkFileChooserWidget" id="file_chooser">
+                <property name="visible">True</property>
+                <property name="show-hidden">False</property>
+                <property name="local-only">False</property>
+              </object>
+
+              <packing>
+                <property name="name">file_chooser</property>
+              </packing>
+            </child>
+
           </object>
         </child>
 
diff --git a/src/wizard-window.vala b/src/wizard-window.vala
index 4e16798..0c8035b 100644
--- a/src/wizard-window.vala
+++ b/src/wizard-window.vala
@@ -4,11 +4,14 @@ using Gtk;
 private enum Boxes.WizardWindowPage {
     MAIN,
     CUSTOMIZATION,
+    FILE_CHOOSER,
 }
 
 [GtkTemplate (ui = "/org/gnome/Boxes/ui/wizard-window.ui")]
 private class Boxes.WizardWindow : Gtk.Window, Boxes.UI {
-    public const string[] page_names = { "main", "customization" };
+    public const string[] page_names = { "main", "customization", "file_chooser" };
+
+    public delegate void FileChosenFunc (string uri);
 
     public UIState previous_ui_state { get; protected set; }
     public UIState ui_state { get; protected set; }
@@ -40,6 +43,8 @@ private class Boxes.WizardWindow : Gtk.Window, Boxes.UI {
     [GtkChild]
     public Gtk.Grid customization_grid;
     [GtkChild]
+    public Gtk.FileChooserWidget file_chooser;
+    [GtkChild]
     public WizardToolbar topbar;
     [GtkChild]
     public Notificationbar notificationbar;
@@ -50,6 +55,12 @@ private class Boxes.WizardWindow : Gtk.Window, Boxes.UI {
         wizard.setup_ui (app_window, this);
         topbar.setup_ui (this);
 
+        // FIXME: Can we do this from UI file somehow? Would be nice, if so
+        file_chooser.filter = new Gtk.FileFilter ();
+        file_chooser.filter.add_mime_type ("application/x-cd-image");
+        foreach (var extension in InstalledMedia.supported_extensions)
+            file_chooser.filter.add_pattern ("*" + extension);
+
         set_transient_for (app_window);
 
         notify["ui-state"].connect (ui_state_changed);
@@ -91,6 +102,18 @@ private class Boxes.WizardWindow : Gtk.Window, Boxes.UI {
         page = WizardWindowPage.CUSTOMIZATION;
     }
 
+    public void show_file_chooser (owned FileChosenFunc file_chosen_func) {
+        ulong activated_id = 0;
+        activated_id = file_chooser.file_activated.connect (() => {
+            var uri = file_chooser.get_uri ();
+            file_chosen_func (uri);
+            file_chooser.disconnect (activated_id);
+
+            page = WizardWindowPage.MAIN;
+        });
+        page = WizardWindowPage.FILE_CHOOSER;
+    }
+
     private void ui_state_changed () {
         wizard.set_state (ui_state);