Passing Eo events from Elm_Code to the Evas_Object when the backend data changes. Track a list of all widgets connected to the Elm_Code so we can signal them all. Add API to change status of a line which will refresh the widget too.

configure.ac

@@ -34,6 +34,7 @@ PKG_CHECK_MODULES([EFL],
  evas >= 1.8.0
  ecore >= 1.8.0
  edje >= 1.8.0
+ eo >= 1.8.0
  elementary >= 1.8.0
  eio >= 1.8.0
 ])

elm_code/lib/Elm_Code.h

@@ -107,6 +107,21 @@ EAPI Elm_Code *elm_code_create(Elm_Code_File *file);
  */
 EAPI void elm_code_free(Elm_Code *code);
 
+/**
+ * @}
+ *
+ * @brief Callbacks and message passing.
+ * @defgroup Callbacks  Managing the information flow between Elm_Code objects and Evas_Object widgets
+ *
+ * @{
+ *
+ * Managing the callbacks and other behaviours that cross the backend - frontend divide.
+ */
+
+
+EAPI void elm_code_callback_fire(Elm_Code *code, const char *signal, void *data);
+
+
 /**
  * @}
  */

elm_code/lib/elm_code.c

@@ -2,6 +2,9 @@
 # include "config.h"
 #endif
 
+#define EFL_BETA_API_SUPPORT
+#include <Eo.h>
+
 #include "Elm_Code.h"
 
 #include "elm_code_private.h"
@@ -64,6 +67,7 @@ elm_code_create(Elm_Code_File *file)
 
    ret = calloc(1, sizeof(Elm_Code));
    ret->file = file;
+   file->parent = ret;
 
    return ret;
 }
@@ -71,8 +75,30 @@ elm_code_create(Elm_Code_File *file)
 EAPI void
 elm_code_free(Elm_Code *code)
 {
+   Eina_List *item;
+   Evas_Object *widget;
+
    if (code->file)
-     free(code->file);
+     elm_code_file_free(code->file);
+
+   EINA_LIST_FOREACH(code->widgets, item, widget)
+     {
+        evas_object_hide(widget);
+        evas_object_del(widget);
+     }
 
    free(code);
 }
+
+EAPI void
+elm_code_callback_fire(Elm_Code *code, const char *signal, void *data)
+{
+   Eina_List *item;
+   Evas_Object *widget;
+
+   EINA_LIST_FOREACH(code->widgets, item, widget)
+     {
+        eo_do(widget, eo_event_callback_call(ELM_CODE_EVENT_LINE_SET_DONE, data));
+     }
+}
+

elm_code/lib/elm_code_common.h

@@ -3,6 +3,13 @@
 
 #include <Eina.h>
 
+#define EFL_BETA_API_SUPPORT
+#include <Eo.h>
+
+#define ELM_CODE_EVENT_LINE_SET_DONE "line,set,done"
+//EAPI const Eo_Event_Description ELM_CODE_EVENT_LINE_SET_DONE = 
+//    EO_EVENT_DESCRIPTION("line,set,done", "");
+
 typedef enum {
    ELM_CODE_STATUS_TYPE_DEFAULT = 0,
    ELM_CODE_STATUS_TYPE_ERROR,
@@ -17,13 +24,14 @@ typedef enum {
    ELM_CODE_TOKEN_TYPE_COUNT
 } Elm_Code_Token_Type;
 
-
 #include "elm_code_file.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+
+
 /**
  * @file
  * @brief Common data structures and constants.

elm_code/lib/elm_code_file.c

@@ -31,6 +31,9 @@ static void _elm_code_file_line_append_data(Elm_Code_File *file, const char *con
    line->content[length] = 0;
 
    file->lines = eina_list_append(file->lines, line);
+
+   if (file->parent)
+     elm_code_callback_fire(file->parent, ELM_CODE_EVENT_LINE_SET_DONE, line);
 }
 
 EAPI Elm_Code_File *elm_code_file_new()
@@ -136,3 +139,18 @@ EAPI char *elm_code_file_line_content_get(Elm_Code_File *file, unsigned int numb
      return NULL;
    return line->content;
 }
+
+EAPI void elm_code_file_line_status_set(Elm_Code_File *file, unsigned int number, Elm_Code_Status_Type status)
+{
+   Elm_Code_Line *line;
+
+   line = elm_code_file_line_get(file, number);
+
+   if (!line)
+     return;
+
+   line->status = status;
+
+   if (file->parent)
+     elm_code_callback_fire(file->parent, ELM_CODE_EVENT_LINE_SET_DONE, line);
+}

elm_code/lib/elm_code_file.h

@@ -25,6 +25,8 @@ typedef struct _Elm_Code_Line
 
 typedef struct _Elm_Code_File
 {
+   void *parent;
+
    Eina_List *lines;
    Eina_File *file;
 
@@ -72,6 +74,8 @@ EAPI Elm_Code_Line *elm_code_file_line_get(Elm_Code_File *file, unsigned int lin
 
 EAPI char *elm_code_file_line_content_get(Elm_Code_File *file, unsigned int line);
 
+EAPI void elm_code_file_line_status_set(Elm_Code_File *file, unsigned int line, Elm_Code_Status_Type status);
+
 /**
  * @}
  */

elm_code/lib/elm_code_widget.c

@@ -2,6 +2,9 @@
 # include "config.h"
 #endif
 
+#define EFL_BETA_API_SUPPORT
+#include <Eo.h>
+
 #include <Elementary.h>
 
 #include "elm_code_widget.h"
@@ -12,7 +15,8 @@ EAPI void elm_code_widget_fill(Evas_Object *o, Elm_Code *code)
 {
    Elm_Code_Line *line;
    Evas_Textgrid_Cell *cells;
-   const char *content, *chr;
+   const char *content;
+   char *chr;
    unsigned int length;
    int w, h, cw, ch;
    unsigned int x, y;
@@ -41,11 +45,47 @@ EAPI void elm_code_widget_fill(Evas_Object *o, Elm_Code *code)
              chr++;
           }
      }
+
+   evas_object_textgrid_update_add(o, 0, 0, w, h);
 }
 
 static void
-_elm_code_widget_resize_cb(void *data, EINA_UNUSED Evas *e, Evas_Object *obj,
-                           EINA_UNUSED void *event_info)
+_elm_code_widget_line_cb(void *data, Eo *obj, const Eo_Event_Description *desc EINA_UNUSED,
+                         void *event_info)
+{
+   Elm_Code *code;
+   Elm_Code_Line *line;
+   Evas_Object *o;
+
+   Evas_Textgrid_Cell *cells;
+   char *chr;
+   unsigned int length, x;
+   int w;
+
+   code = (Elm_Code *)data;
+   line = (Elm_Code_Line *)event_info;
+   o = (Evas_Object *)obj;
+
+   cells = evas_object_textgrid_cellrow_get(o, line->number - 1);
+   length = strlen(line->content);
+   evas_object_textgrid_size_get(o, &w, NULL);
+
+   chr = line->content;
+   for (x = 0; x < (unsigned int) w && x < length; x++)
+     {
+        cells[x].codepoint = *chr;
+        cells[x].bg = line->status;
+        cells[x].fg = ELM_CODE_TOKEN_TYPE_DEFAULT;
+
+        chr++;
+     }
+
+   evas_object_textgrid_update_add(o, 0, line->number - 1, w, 1);
+}
+
+static void
+_elm_code_widget_resize_cb(void *data, Evas *e EINA_UNUSED, Evas_Object *obj,
+                           void *event_info EINA_UNUSED)
 {
    Elm_Code *code;
 
@@ -72,6 +112,10 @@ EAPI Evas_Object *elm_code_widget_add(Evas_Object *parent, Elm_Code *code)
                                     205, 205, 205, 255);
 
    evas_object_event_callback_add(o, EVAS_CALLBACK_RESIZE, _elm_code_widget_resize_cb, code);
+
+   eo_do(o,eo_event_callback_add(ELM_CODE_EVENT_LINE_SET_DONE, _elm_code_widget_line_cb, code));
+
+   code->widgets = eina_list_append(code->widgets, o);
    return o;
 }
 

src/bin/edi_logpanel.c

@@ -21,7 +21,6 @@ void print_cb(const Eina_Log_Domain *domain,
               EINA_UNUSED void *data,
               va_list args)
 {
-   Elm_Code_Line *code_line;
    unsigned int printed, line_count, buffer_len = 512;
    char buffer [buffer_len];
 
@@ -33,9 +32,8 @@ void print_cb(const Eina_Log_Domain *domain,
    if (level <= EINA_LOG_LEVEL_ERR)
      {
         line_count = elm_code_file_lines_get(_elm_code->file);
-        code_line = elm_code_file_line_get(_elm_code->file, line_count);
 
-        code_line->status = ELM_CODE_STATUS_TYPE_ERROR;
+        elm_code_file_line_status_set(_elm_code->file, line_count, ELM_CODE_STATUS_TYPE_ERROR);
      }
 }