[gnome-boxes] props-toolbar: Add 'Open' button to file chooser view

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit a194dd690bb99c0d9e58532090d0afb05dc77724
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 10 00:24:23 2014 +0000

    props-toolbar: Add 'Open' button to file chooser view
    
    When in file chooser view, user should not only be able to activate
    selected files using double-click and 'Enter' key but also by clicking
    a button.

 data/ui/properties-toolbar.ui |   19 +++++++++++++++++++
 src/properties-toolbar.vala   |   32 ++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 0 deletions(-)
---
diff --git a/data/ui/properties-toolbar.ui b/data/ui/properties-toolbar.ui
index c9a3540..b8d76c4 100644
--- a/data/ui/properties-toolbar.ui
+++ b/data/ui/properties-toolbar.ui
@@ -126,6 +126,25 @@
           </packing>
         </child>
 
+        <child>
+          <object class="GtkButton" id="file_chooser_open_button">
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="valign">center</property>
+            <property name="use-underline">True</property>
+            <property name="label" translatable="yes">_Open</property>
+            <signal name="clicked" handler="on_file_chooser_open_clicked"/>
+            <style>
+              <class name="text-button"/>
+            </style>
+
+          </object>
+
+          <packing>
+            <property name="pack-type">end</property>
+          </packing>
+        </child>
+
       </object>
 
       <packing>
diff --git a/src/properties-toolbar.vala b/src/properties-toolbar.vala
index abe017f..ab9478b 100644
--- a/src/properties-toolbar.vala
+++ b/src/properties-toolbar.vala
@@ -21,6 +21,8 @@ private class Boxes.PropertiesToolbar: Gtk.Stack {
 
     [GtkChild]
     private EditableEntry title_entry;
+    [GtkChild]
+    private Button file_chooser_open_button;
 
     private AppWindow window;
     private unowned PropertiesWindow props_window;
@@ -37,6 +39,13 @@ private class Boxes.PropertiesToolbar: Gtk.Stack {
         this.window = window;
         this.props_window = props_window;
 
+        var file_chooser = props_window.file_chooser;
+        file_chooser.selection_changed.connect (() => {
+            var path = file_chooser.get_filename ();
+
+            file_chooser_open_button.sensitive = (path != null);
+        });
+
         window.notify["ui-state"].connect (ui_state_changed);
     }
 
@@ -63,6 +72,29 @@ private class Boxes.PropertiesToolbar: Gtk.Stack {
     }
 
     [GtkCallback]
+    private void on_file_chooser_open_clicked () requires (page == PropsWindowPage.FILE_CHOOSER) {
+        var file_chooser = props_window.file_chooser;
+        var file = file_chooser.get_file ();
+        assert (file != null);
+        var file_type = file.query_file_type (FileQueryInfoFlags.NONE, null);
+
+        switch (file_type) {
+        case GLib.FileType.REGULAR:
+        case GLib.FileType.SYMBOLIC_LINK:
+            file_chooser.file_activated ();
+            break;
+
+        case GLib.FileType.DIRECTORY:
+            file_chooser.set_current_folder (file.get_path ());
+            break;
+
+        default:
+            debug ("Unknown file type selected");
+            break;
+        }
+    }
+
+    [GtkCallback]
     private void on_title_entry_changed () {
         window.current_item.name = title_entry.text;
     }