Added some functions to the text_field to control input focus and

select text.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402823

dlib/gui_widgets/widgets.cpp

@@ -442,6 +442,29 @@ namespace dlib
         right_click_menu.enable();
     }
 
+// ----------------------------------------------------------------------------------------
+
+    void text_field::
+    give_input_focus (
+    )
+    {
+        auto_mutex M(m);
+        has_focus = true;
+        cursor_visible = true;
+        parent.invalidate_rectangle(rect);
+        t.start();
+    }
+
+// ----------------------------------------------------------------------------------------
+
+    void text_field::
+    select_all_text (
+    )
+    {
+        auto_mutex M(m);
+        on_select_all();
+    }
+
 // ----------------------------------------------------------------------------------------
 
     void text_field::

dlib/gui_widgets/widgets.h

@@ -409,6 +409,12 @@ namespace dlib
             const std::wstring& text_
         );
 
+        void give_input_focus (
+        );
+
+        void select_all_text (
+        );
+
         void set_text (
             const dlib::ustring& text_
         );

dlib/gui_widgets/widgets_abstract.h

@@ -526,6 +526,21 @@ namespace dlib
                       nothing else changes.
         !*/
 
+        void give_input_focus (
+        );
+        /*!
+            ensures
+                - gives this text field input keyboard focus
+        !*/
+
+        void select_all_text (
+        );
+        /*!
+            ensures
+                - causes all the text in the text field to become selected.
+                  (note that it doesn't give input focus)
+        !*/
+
         void set_text_color (
             const rgb_pixel color
         );