mainview: Add support for split-panes.

This adds the ability to edit multiple regions of the same
file at the same time. The views are synchronised. This
also adds a complementary function allowing us to get panel
from path name. We use this for focus sanity with our
additional split views.

src/bin/edi_main.c

@@ -953,6 +953,13 @@ _edi_menu_view_open_window_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUS
    edi_mainview_new_window();
 }
 
+static void
+_edi_menu_view_split_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED,
+                        void *event_info EINA_UNUSED)
+{
+   edi_mainview_split_current();
+}
+
 static void
 _edi_menu_view_new_panel_cb(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED,
                          void *event_info EINA_UNUSED)
@@ -1165,6 +1172,7 @@ _edi_menu_setup(Evas_Object *win)
    menu_it = elm_menu_item_add(menu, NULL, NULL, _("View"), NULL, NULL);
    elm_menu_item_add(menu, menu_it, "window-new", _("New Window"), _edi_menu_view_open_window_cb, NULL);
    elm_menu_item_add(menu, menu_it, "object-flip-horizontal", _("New Panel"), _edi_menu_view_new_panel_cb, NULL);
+   elm_menu_item_add(menu, menu_it, "object-flip-vertical", _("Split View"), _edi_menu_view_split_cb, NULL);
    elm_menu_item_separator_add(menu, menu_it);
    elm_menu_item_add(menu, menu_it, "edit-find", _("Open Tasks"), _edi_menu_view_tasks_cb, NULL);
 

src/bin/editor/edi_editor.c

@@ -1317,6 +1317,12 @@ _edi_editor_config_changed(void *data, int type EINA_UNUSED, void *event EINA_UN
    return ECORE_CALLBACK_RENEW;
 }
 
+void
+edi_editor_widget_config_get(Elm_Code_Widget *widget)
+{
+   _edi_editor_config_changed(widget, 0, NULL);
+}
+
 static void
 _editor_del_cb(void *data, Evas *e EINA_UNUSED, Evas_Object *o, void *event_info EINA_UNUSED)
 {

src/bin/editor/edi_editor.h

@@ -144,6 +144,17 @@ void edi_editor_save(Edi_Editor *editor);
  */
 void edi_editor_doc_open(Edi_Editor *editor);
 
+/**
+ * Get global configuration values for code editor and
+ * apply them to an Elm_Code_Widget instance.
+ *
+ * @param widget The Elm_Code_Widget obj to update.
+ *
+ * @ingroup Widgets
+ */
+void edi_editor_widget_config_get(Elm_Code_Widget *widget);
+
+
 /**
  * @}
  */

src/bin/mainview/edi_mainview.c

@@ -100,6 +100,27 @@ edi_mainview_panel_for_item_get(Edi_Mainview_Item *item)
    return NULL;
 }
 
+Edi_Mainview_Panel *
+edi_mainview_panel_for_path_get(const char *path)
+{
+   Eina_List *item;
+   Edi_Mainview_Panel *panel;
+   Edi_Mainview_Item *it;
+   int i;
+
+   for (i = 0; i < edi_mainview_panel_count(); i++)
+     {
+        panel = edi_mainview_panel_by_index(i);
+        EINA_LIST_FOREACH(panel->items, item, it)
+          {
+             if (it && !strcmp(it->path, path))
+               return panel;
+          }
+     }
+
+   return NULL;
+}
+
 unsigned int
 edi_mainview_panel_index_get(Edi_Mainview_Panel *panel)
 {
@@ -259,6 +280,62 @@ edi_mainview_open_path(const char *path)
    edi_mainview_panel_open_path(_current_panel, path);
 }
 
+static void
+_focused_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
+{
+   Elm_Code *code;
+   const char *path;
+   Edi_Mainview_Panel *panel;
+   Edi_Editor *editor = data;
+
+   code = elm_code_widget_code_get(editor->entry);
+   path = elm_code_file_path_get(code->file);
+   panel = edi_mainview_panel_for_path_get(path);
+
+   edi_mainview_panel_focus(panel);
+}
+
+static void
+_changed_cb(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
+{
+   Edi_Editor *editor = data;
+
+   editor->modified = EINA_TRUE;
+
+   ecore_event_add(EDI_EVENT_FILE_CHANGED, NULL, NULL, NULL);
+}
+
+void edi_mainview_split_current(void)
+{
+   Elm_Code *code;
+   Elm_Code_Widget *widget;
+   Edi_Editor *editor;
+   Edi_Mainview_Panel *panel;
+
+   if (edi_mainview_is_empty())
+     return;
+
+   panel = edi_mainview_panel_current_get();
+   edi_mainview_panel_focus(panel);
+
+   editor = evas_object_data_get(panel->current->view, "editor");
+   if (!editor)
+     return;
+
+   code = elm_code_widget_code_get(editor->entry);
+   widget = elm_code_widget_add(panel->content, code);
+   elm_code_widget_editable_set(widget, EINA_TRUE);
+   elm_code_widget_line_numbers_set(widget, EINA_TRUE);
+   evas_object_smart_callback_add(widget, "changed,user", _changed_cb, editor);
+   evas_object_smart_callback_add(widget, "focused", _focused_cb, editor);
+   edi_editor_widget_config_get(widget);
+
+   evas_object_size_hint_weight_set(widget, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   evas_object_size_hint_align_set(widget, EVAS_HINT_FILL, EVAS_HINT_FILL);
+   evas_object_show(widget);
+   elm_box_pack_start(panel->current->container, widget);
+}
+
 void
 edi_mainview_open(Edi_Path_Options *options)
 {

src/bin/mainview/edi_mainview.h

@@ -104,6 +104,14 @@ void edi_mainview_open(Edi_Path_Options *options);
  */
 void edi_mainview_open_window_path(const char *path);
 
+/**
+ * Open editable split view with the currently selected item.
+ *
+ * @ingroup Content
+ */
+void edi_mainview_split_current(void);
+
+
 /**
  * Open the file described in the provided options in a new window - path and location etc.
  *
@@ -334,6 +342,16 @@ Edi_Mainview_Panel *edi_mainview_panel_append();
  */
 Edi_Mainview_Panel *edi_mainview_panel_for_item_get(Edi_Mainview_Item *item);
 
+/*
+ * Return panel object from path.
+ *
+ * @param path the item path related to the returned panel.
+ * @return the mainview panel object associated with the path.
+ *
+ * @ingroup Panels
+ */
+Edi_Mainview_Panel *edi_mainview_panel_for_path_get(const char *path);
+
 /*
  * Return panel object from it's numeric index.
  *

src/bin/mainview/edi_mainview_panel.c

@@ -667,8 +667,20 @@ void
 edi_mainview_panel_goto_popup_show(Edi_Mainview_Panel *panel)
 {
    Evas_Object *popup, *box, *input, *sep, *button;
+   Edi_Editor *editor;
+
+   if (edi_mainview_is_empty())
+     return;
+
+   if (!edi_mainview_panel_item_count(edi_mainview_panel_current_get()))
+     return;
+
+   editor = evas_object_data_get(panel->current->view, "editor");
+   if (!editor)
+     return;
+
+   popup = elm_popup_add(editor->entry);
 
-   popup = elm_popup_add(_main_win);
    _edi_mainview_goto_popup = popup;
    elm_object_part_text_set(popup, "title,text",
                             _("Enter line number"));