[evolution/wip/webkit-composer] EEditorWidget: Clean elements and attributes when coverting from HTML to plain

[Tomas Popela <tpopela src gnome org>]

commit e205b5126189dad2df8d1dac6ded61d59a32e02d
Author: Tomas Popela <tpopela redhat com>
Date:   Thu Mar 13 11:21:47 2014 +0100

    EEditorWidget: Clean elements and attributes when coverting from HTML to plain

 e-util/e-editor-widget.c |   52 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 52 insertions(+), 0 deletions(-)
---
diff --git a/e-util/e-editor-widget.c b/e-util/e-editor-widget.c
index 63bc9d8..5f54a69 100644
--- a/e-util/e-editor-widget.c
+++ b/e-util/e-editor-widget.c
@@ -4551,6 +4551,56 @@ show_lose_formatting_dialog (EEditorWidget *widget)
 }
 
 static void
+clear_attributes (WebKitDOMDocument *document)
+{
+       gint length, ii;
+       WebKitDOMNamedNodeMap *attributes;
+       WebKitDOMHTMLElement *body = webkit_dom_document_get_body (document);
+       WebKitDOMHTMLHeadElement *head = webkit_dom_document_get_head (document);
+       WebKitDOMElement *document_element =
+               webkit_dom_document_get_document_element (document);
+
+       /* Remove all attributes from HTML element */
+       attributes = webkit_dom_element_get_attributes (document_element);
+       length = webkit_dom_named_node_map_get_length (attributes);
+       for (ii = length - 1; ii >= 0; ii--) {
+               WebKitDOMNode *node = webkit_dom_named_node_map_item (attributes, ii);
+
+               webkit_dom_element_remove_attribute_node (
+                       document_element, WEBKIT_DOM_ATTR (node), NULL);
+       }
+
+       /* Remove everything from HEAD element */
+       while (webkit_dom_node_has_child_nodes (WEBKIT_DOM_NODE (head))) {
+               webkit_dom_node_remove_child (
+                       WEBKIT_DOM_NODE (head),
+                       webkit_dom_node_get_first_child (WEBKIT_DOM_NODE (head)),
+                       NULL);
+       }
+
+       /* Remove non Evolution attributes from BODY element */
+       attributes = webkit_dom_element_get_attributes (WEBKIT_DOM_ELEMENT (body));
+       length = webkit_dom_named_node_map_get_length (attributes);
+       for (ii = length - 1; ii >= 0; ii--) {
+               gchar *name;
+               WebKitDOMNode *node = webkit_dom_named_node_map_item (attributes, ii);
+
+               name = webkit_dom_node_get_local_name (node);
+
+               if (!g_str_has_prefix (name, "data-") ||
+                   g_str_has_prefix (name, "data-inline") ||
+                   g_str_has_prefix (name, "data-name")) {
+                       webkit_dom_element_remove_attribute_node (
+                               WEBKIT_DOM_ELEMENT (body),
+                               WEBKIT_DOM_ATTR (node),
+                               NULL);
+               }
+
+               g_free (name);
+       }
+}
+
+static void
 convert_when_changing_composer_mode (EEditorWidget *widget)
 {
        EEditorSelection *selection;
@@ -4679,6 +4729,8 @@ convert_when_changing_composer_mode (EEditorWidget *widget)
                body = WEBKIT_DOM_HTML_ELEMENT (
                        e_editor_widget_quote_plain_text (widget));
 
+       clear_attributes (document);
+
        webkit_dom_element_set_attribute (
                WEBKIT_DOM_ELEMENT (body), "data-converted", "", NULL);