From c4f97f2f3ea0f8080ded94f638daa92efc4d077e Mon Sep 17 00:00:00 2001
From: Andy Williams <andy@andywilliams.me>
Date: Sat, 28 Feb 2015 14:20:32 +0000
Subject: [PATCH] elm_code: support line insertion

in our widget call a line insertion on enter pressed
---
 legacy/elm_code/src/lib/elm_code_file.c   | 42 +++++++++++++++++++----
 legacy/elm_code/src/lib/elm_code_file.h   |  2 ++
 legacy/elm_code/src/lib/elm_code_widget.c | 22 ++++++++++++
 3 files changed, 60 insertions(+), 6 deletions(-)

diff --git a/legacy/elm_code/src/lib/elm_code_file.c b/legacy/elm_code/src/lib/elm_code_file.c
index b51b3f10e9..3ce6c94952 100644
--- a/legacy/elm_code/src/lib/elm_code_file.c
+++ b/legacy/elm_code/src/lib/elm_code_file.c
@@ -21,9 +21,10 @@ static Elm_Code_Line *_elm_code_file_line_blank_create(Elm_Code_File *file, int
    return ecl;
 }
 
-static void _elm_code_file_line_append_data(Elm_Code_File *file, const char *content, int length, int row, Eina_Bool mapped, void *data)
+static void _elm_code_file_line_insert_data(Elm_Code_File *file, const char *content, int length,
+                                            unsigned int row, Eina_Bool mapped, void *data)
 {
-   Elm_Code_Line *line;
+   Elm_Code_Line *line, *after;
 
    line = _elm_code_file_line_blank_create(file, row, data);
    if (!line) return;
@@ -41,7 +42,15 @@ static void _elm_code_file_line_append_data(Elm_Code_File *file, const char *con
         line->length = length;
      }
 
-   file->lines = eina_list_append(file->lines, line);
+   if (row == 1)
+     file->lines = eina_list_prepend(file->lines, line);
+   else if (row == eina_list_count(file->lines) + 1)
+     file->lines = eina_list_append(file->lines, line);
+   else
+     {
+        after = eina_list_nth(file->lines, row - 2);
+        file->lines = eina_list_append_relative(file->lines, line, after);
+     }
 
    if (file->parent)
      {
@@ -92,7 +101,7 @@ EAPI Elm_Code_File *elm_code_file_open(Elm_Code *code, const char *path)
              ret->lines = eina_list_append(ret->lines, ecl);
           }
 
-        _elm_code_file_line_append_data(ret, line->start, line->length, lastindex = line->index, EINA_TRUE, NULL);
+        _elm_code_file_line_insert_data(ret, line->start, line->length, lastindex = line->index, EINA_TRUE, NULL);
      }
    eina_iterator_free(it);
 
@@ -166,8 +175,29 @@ EAPI void elm_code_file_line_append(Elm_Code_File *file, const char *line, int l
 {
    int row;
 
-   row = elm_code_file_lines_get(file);
-   return _elm_code_file_line_append_data(file, line, length, row+1, EINA_FALSE, data);
+   row = elm_code_file_lines_get(file) + 1;
+   _elm_code_file_line_insert_data(file, line, length, row, EINA_FALSE, data);
+}
+
+EAPI void elm_code_file_line_insert(Elm_Code_File *file, unsigned int row, const char *line, int length, void *data)
+{
+   Eina_List *item;
+   Elm_Code_Line *line_item;
+   unsigned int r;
+
+   _elm_code_file_line_insert_data(file, line, length, row, EINA_FALSE, data);
+
+   r = row;
+   EINA_LIST_FOREACH(file->lines, item, line_item)
+     {
+        if (line_item->number < row)
+          continue;
+
+        line_item->number = r++;
+
+        if (file->parent)
+          elm_code_callback_fire(file->parent, &ELM_CODE_EVENT_LINE_LOAD_DONE, line_item);
+     }
 }
 
 EAPI Elm_Code_Line *elm_code_file_line_get(Elm_Code_File *file, unsigned int number)
diff --git a/legacy/elm_code/src/lib/elm_code_file.h b/legacy/elm_code/src/lib/elm_code_file.h
index 36f39a5e0c..24286f60ed 100644
--- a/legacy/elm_code/src/lib/elm_code_file.h
+++ b/legacy/elm_code/src/lib/elm_code_file.h
@@ -60,6 +60,8 @@ EAPI unsigned int elm_code_file_lines_get(Elm_Code_File *file);
 
 EAPI void elm_code_file_line_append(Elm_Code_File *file, const char *line, int length, void *data);
 
+EAPI void elm_code_file_line_insert(Elm_Code_File *file, unsigned int row, const char *line, int length, void *data);
+
 EAPI Elm_Code_Line *elm_code_file_line_get(Elm_Code_File *file, unsigned int line);
 
 /**
diff --git a/legacy/elm_code/src/lib/elm_code_widget.c b/legacy/elm_code/src/lib/elm_code_widget.c
index 680dd504c3..a2acf527a0 100644
--- a/legacy/elm_code/src/lib/elm_code_widget.c
+++ b/legacy/elm_code/src/lib/elm_code_widget.c
@@ -580,6 +580,24 @@ _elm_code_widget_text_at_cursor_insert(Elm_Code_Widget *widget, const char *text
          elm_code_widget_cursor_position_set(col + length, row));
 }
 
+static void
+_elm_code_widget_newline(Elm_Code_Widget *widget)
+{
+   Elm_Code *code;
+   Elm_Code_Line *line;
+   unsigned int row, col;
+
+   eo_do(widget,
+         code = elm_code_widget_code_get(),
+         elm_code_widget_cursor_position_get(&col, &row));
+   line = elm_code_file_line_get(code->file, row);
+
+   elm_code_file_line_insert(code->file, line->number + 1, "", 0, NULL);
+
+   eo_do(widget,
+         elm_code_widget_cursor_position_set(1, row + 1));
+}
+
 static void
 _elm_code_widget_key_down_cb(void *data, Evas *evas EINA_UNUSED,
                               Evas_Object *obj EINA_UNUSED, void *event_info)
@@ -605,6 +623,10 @@ _elm_code_widget_key_down_cb(void *data, Evas *evas EINA_UNUSED,
      _elm_code_widget_cursor_move_left(widget);
    else if (!strcmp(ev->key, "Right"))
      _elm_code_widget_cursor_move_right(widget);
+
+   else if (!strcmp(ev->key, "KP_Enter") || !strcmp(ev->key, "Return"))
+     _elm_code_widget_newline(widget);
+
    else if (ev->string && strlen(ev->string) == 1)
      _elm_code_widget_text_at_cursor_insert(widget, ev->string, 1);
    else