[gtkmm] Gtk::Assistant: Add child properties and a ctor with use_header_bar

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 6362307fd61a8babb0895f0413427938ea706083
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Mar 5 15:47:03 2017 +0100

    Gtk::Assistant: Add child properties and a ctor with use_header_bar
    
    property_use_header_bar() is construct-only. It should be possible to set
    it in a constructor. A similar constructor was added to Gtk::Dialog as a
    result of bug 738513.

 gtk/src/assistant.ccg |    8 ++++++++
 gtk/src/assistant.hg  |   17 ++++++++++++++---
 2 files changed, 22 insertions(+), 3 deletions(-)
---
diff --git a/gtk/src/assistant.ccg b/gtk/src/assistant.ccg
index 4bd2172..d7802f8 100644
--- a/gtk/src/assistant.ccg
+++ b/gtk/src/assistant.ccg
@@ -44,6 +44,14 @@ static void SignalProxy_SlotForwardPage_gtk_callback_destroy(void* data)
 namespace Gtk
 {
 
+// use-header-bar is construct-only. It must be set in the constructor,
+// if you don't want the default value.
+Assistant::Assistant(bool use_header_bar)
+:
+  _CONSTRUCT("use-header-bar", static_cast<int>(use_header_bar))
+{
+}
+
 void Assistant::set_forward_page_func(const SlotForwardPage& slot)
 {
   // Create a copy of the slot object. A pointer to this will be passed
diff --git a/gtk/src/assistant.hg b/gtk/src/assistant.hg
index 2373bea..3642cb1 100644
--- a/gtk/src/assistant.hg
+++ b/gtk/src/assistant.hg
@@ -29,7 +29,7 @@ _WRAP_ENUM(AssistantPageType, GtkAssistantPageType)
 
 /** A widget used to guide users through multi-step operations.
  *
- * A Gtk::Assistant is a widget used to represent a generally complex
+ * A %Gtk::Assistant is a widget used to represent a generally complex
  * operation split into several steps, guiding the user through its
  * pages and controlling the page flow to collect the necessary data.
  *
@@ -43,6 +43,15 @@ class Assistant : public Window
 public:
   _CTOR_DEFAULT()
 
+  /** Constructor.
+   *
+   * @param use_header_bar <tt>true</tt> if the assistant shall use a HeaderBar
+   *        for action buttons instead of the action-area.
+   *
+   * @newin{3,90}
+   */
+  explicit Assistant(bool use_header_bar);
+
   _WRAP_METHOD(void next_page(), gtk_assistant_next_page)
   _WRAP_METHOD(void previous_page(), gtk_assistant_previous_page)
 
@@ -86,8 +95,10 @@ public:
 
   _WRAP_PROPERTY("use-header-bar", bool)
 
-  //There are no normal properties.
-  //TODO: Child properties?
+  _WRAP_CHILD_PROPERTY("page-type", AssistantPageType, newin "3,90")
+  _WRAP_CHILD_PROPERTY("title", Glib::ustring, newin "3,90")
+  _WRAP_CHILD_PROPERTY("complete", bool, newin "3,90")
+  _WRAP_CHILD_PROPERTY("has-padding", bool, newin "3,90")
 };
 
 } // namespace Gtk