[evolution/webkit-composer] Make line auto wrapping more robust.

[Tomas Popela <tpopela src gnome org>]

commit 099a823adf067d313685c47d0704e6ac02bd2358
Author: Tomas Popela <tpopela redhat com>
Date:   Thu Jun 27 13:36:07 2013 +0200

    Make line auto wrapping more robust.

 e-util/e-editor-selection.c |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)
---
diff --git a/e-util/e-editor-selection.c b/e-util/e-editor-selection.c
index 760d884..347f24d 100644
--- a/e-util/e-editor-selection.c
+++ b/e-util/e-editor-selection.c
@@ -3045,6 +3045,9 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                 * wrapping the selection, but we need to save it before we
                 * start to modify selection */
                range = editor_selection_get_current_range (selection);
+               if (!range)
+                       return;
+
                save_caret_position (selection);
 
                start_offset = webkit_dom_range_get_start_offset (range, NULL);
@@ -3071,10 +3074,24 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                        if (parent_div && g_strcmp0 (webkit_dom_element_get_class_name (parent_div), 
"-x-evo-paragraph") == 0) {
                                paragraph = WEBKIT_DOM_NODE (parent_div);
                        } else {
-                               /* If Return is pressed we need to select element above caret */
-                               if (return_pressed) {
-                                       WebKitDOMNode *position = WEBKIT_DOM_NODE 
(webkit_dom_document_get_element_by_id (document, "-x-evo-caret-position"));
-                                       paragraph = webkit_dom_node_get_previous_sibling (position);
+                               WebKitDOMNode *position = WEBKIT_DOM_NODE 
(webkit_dom_document_get_element_by_id (document, "-x-evo-caret-position"));
+                               if (!position)
+                                       return;
+
+                               /* We try to select previous sibling */
+                               paragraph = webkit_dom_node_get_previous_sibling (position);
+                               if (paragraph) {
+                                       /* When there is just text without container we have to surround it 
with paragraph div */
+                                       if (WEBKIT_DOM_IS_TEXT (paragraph)) {
+                                               WebKitDOMRange *new_range = webkit_dom_document_create_range 
(document);
+                                               WebKitDOMNode *container = WEBKIT_DOM_NODE 
(webkit_dom_document_create_element (document, "DIV", NULL));
+                                               webkit_dom_element_set_class_name (WEBKIT_DOM_ELEMENT 
(container), "-x-evo-paragraph");
+                                               webkit_dom_range_select_node (new_range, paragraph, NULL);
+                                               webkit_dom_range_surround_contents (new_range, container, 
NULL);
+                                               /* We have to move caret position inside this container */
+                                               webkit_dom_node_append_child (container, position, NULL);
+                                               paragraph = container;
+                                       }
                                } else {
                                        /* When some weird element is selected, return */
                                        clear_caret_position_marker (selection);
@@ -3083,6 +3100,9 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                        }
                }
 
+               if (!paragraph)
+                       return;
+
                webkit_dom_html_element_set_id (WEBKIT_DOM_HTML_ELEMENT (paragraph), 
"-x-evo-active-paragraph");
 
                if (previously_wrapped) {