Canvas image: add Efl.Canvas.Text.Factory + use in Ui.Text

This interface has a simple 'create' method to create Efl.Canvas.Object
given a key.
This is used higher-up in Ui.Text in the next commit.

Ui text: add ability to set item factories

Added API to set an item factory object.
This is similar to the previous item providers (that worked with
callbacks).

You instantiate a factory object and set it on the Ui.Text object.
Each factory implements the "create" method from
Efl.Canvas.Text.Item_Factory.

This also includes 3 public factories (Image, Emoticon and Fallback):
  - Image factory: creates images from added entries (key strings)
  - Emoticon factory: creates emoticons by querying the theme
  - Fallback: creates image, then falls back to emoticon

If no factory is set, then the fallback (internal) factory is used.

See the added "Ui.text Item Factory" test in elementary_test for an
example of usage.

@feature

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib/evas/Evas_Eo.h b/src/lib/evas/Evas_Eo.h
index d6664a2ddd..f2b2f6d372 100644
--- a/src/lib/evas/Evas_Eo.h
+++ b/src/lib/evas/Evas_Eo.h
@@ -21,6 +21,7 @@
  */
 //#include "canvas/efl_canvas_text_cursor.eo.h"
 #include "canvas/efl_canvas_text.eo.h"
+#include "canvas/efl_canvas_text_factory.eo.h"
 /**
  * @}
  */