[evolution/wip/webkit-composer] EEditorWidget: Fix HTML structure after ending the list

[Tomas Popela <tpopela src gnome org>]

commit 5039932ecfe64cf61dead7102aae6cb48fa853b0
Author: Tomas Popela <tpopela redhat com>
Date:   Thu Jan 30 13:03:06 2014 +0100

    EEditorWidget: Fix HTML structure after ending the list
    
    Also refactor editor_widget_key_release_event

 e-util/e-editor-widget.c |  115 +++++++++++++++++++++++++++++++++++----------
 1 files changed, 89 insertions(+), 26 deletions(-)
---
diff --git a/e-util/e-editor-widget.c b/e-util/e-editor-widget.c
index 5bb3e49..8f03957 100644
--- a/e-util/e-editor-widget.c
+++ b/e-util/e-editor-widget.c
@@ -1146,15 +1146,97 @@ editor_widget_key_press_event (GtkWidget *widget,
                key_press_event (widget, event);
 }
 
+static void
+adjust_html_structure_after_ending_list (EEditorSelection *selection,
+                                         WebKitDOMDocument *document,
+                                         WebKitDOMNode *node)
+{
+       WebKitDOMNode *prev_sibling;
+       WebKitDOMNode *parent;
+       WebKitDOMElement *paragraph;
+
+       /* When pressing Enter on empty line in the list WebKit will end that
+        * list and inserts <div><br></div> after it and sets the caret after
+        * the BR element. But that's not what we want, so we will remove the DIV
+        * and BR elements and append new paragraph with caret inside it after
+        * the paragraph that includes the previously inserted list. */
+       prev_sibling = webkit_dom_node_get_previous_sibling (node);
+       if (WEBKIT_DOM_IS_HTMLLI_ELEMENT (prev_sibling) ||
+           WEBKIT_DOM_IS_HTMLO_LIST_ELEMENT (prev_sibling) ||
+           WEBKIT_DOM_IS_HTMLU_LIST_ELEMENT (prev_sibling))
+               return;
+
+       if (!(WEBKIT_DOM_IS_HTML_DIV_ELEMENT (node) &&
+           !element_has_class (WEBKIT_DOM_ELEMENT (node), "-x-evo-paragraph")))
+               return;
+
+       parent = webkit_dom_node_get_parent_node (prev_sibling);
+       paragraph = e_editor_selection_get_paragraph_element (
+               selection, document, -1),
+
+       webkit_dom_html_element_set_inner_text (
+               WEBKIT_DOM_HTML_ELEMENT (paragraph), UNICODE_ZERO_WIDTH_SPACE, NULL);
+
+       webkit_dom_node_append_child (
+               WEBKIT_DOM_NODE (paragraph),
+               e_editor_selection_get_caret_position_node (document),
+               NULL);
+
+       webkit_dom_node_insert_before (
+               webkit_dom_node_get_parent_node (parent),
+               WEBKIT_DOM_NODE (paragraph),
+               webkit_dom_node_get_next_sibling (WEBKIT_DOM_NODE (parent)),
+               NULL);
+
+       webkit_dom_node_remove_child (
+               parent, node, NULL);
+
+       e_editor_selection_restore_caret_position (selection);
+}
+
+static gboolean
+surround_text_with_paragraph_if_needed (EEditorSelection *selection,
+                                        WebKitDOMDocument *document,
+                                        WebKitDOMNode *node)
+{
+       WebKitDOMNode *next_sibling = webkit_dom_node_get_next_sibling (node);
+
+       /* All text in composer has to be written in div elements, so if
+        * we are writing something straight to the body, surround it with
+        * paragraph */
+       if (WEBKIT_DOM_IS_HTMLBR_ELEMENT (next_sibling) && WEBKIT_DOM_IS_TEXT (node) &&
+           WEBKIT_DOM_IS_HTML_BODY_ELEMENT (webkit_dom_node_get_parent_node (node))) {
+               e_editor_selection_put_node_into_paragraph (
+                       selection,
+                       document,
+                       node,
+                       e_editor_selection_get_caret_position_node (document));
+
+               webkit_dom_node_remove_child (
+                       webkit_dom_node_get_parent_node (next_sibling),
+                       next_sibling,
+                       NULL);
+
+               return TRUE;
+       }
+
+       return FALSE;
+}
+
 static gboolean
 editor_widget_key_release_event (GtkWidget *widget,
                                  GdkEventKey *event)
 {
+       WebKitDOMDocument *document;
        WebKitDOMRange *range;
        EEditorWidget *editor_widget;
+       EEditorSelection *selection;
 
        editor_widget = E_EDITOR_WIDGET (widget);
        range = editor_widget_get_dom_range (editor_widget);
+       selection = e_editor_widget_get_selection (editor_widget);
+
+       document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (widget));
 
        if (editor_widget->priv->magic_smileys &&
            editor_widget->priv->html_mode) {
@@ -1167,39 +1249,20 @@ editor_widget_key_release_event (GtkWidget *widget,
            (event->keyval == GDK_KEY_space)) {
 
                editor_widget_check_magic_links (editor_widget, range, FALSE, event);
+               adjust_html_structure_after_ending_list (
+                       selection,
+                       document,
+                       webkit_dom_range_get_end_container (range, NULL));
+
        } else {
                WebKitDOMNode *node;
-               WebKitDOMNode *next_sibling;
 
                node = webkit_dom_range_get_end_container (range, NULL);
-               next_sibling = webkit_dom_node_get_next_sibling (node);
-
-               /* All text in composer has to be written in div elements, so if
-                * we are writing something straight to the body, surround it with
-                * paragraph */
-               if (WEBKIT_DOM_IS_HTMLBR_ELEMENT (next_sibling) && WEBKIT_DOM_IS_TEXT (node) &&
-                   WEBKIT_DOM_IS_HTML_BODY_ELEMENT (webkit_dom_node_get_parent_node (node))) {
-                       g_warning ("WRAPPING");
-                       WebKitDOMDocument *document =
-                               webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (widget));
-                       EEditorSelection *selection =
-                               e_editor_widget_get_selection (editor_widget);
-
-                       e_editor_selection_put_node_into_paragraph (
-                               selection,
-                               document,
-                               node,
-                               e_editor_selection_get_caret_position_node (document));
-
-                       webkit_dom_node_remove_child (
-                               webkit_dom_node_get_parent_node (next_sibling),
-                               next_sibling,
-                               NULL);
 
+               if (surround_text_with_paragraph_if_needed (selection, document, node)) {
                        e_editor_selection_restore_caret_position (selection);
-
-                       range = editor_widget_get_dom_range (editor_widget);
                        node = webkit_dom_range_get_end_container (range, NULL);
+                       range = editor_widget_get_dom_range (editor_widget);
                }
 
                if (WEBKIT_DOM_IS_TEXT (node)) {