[evolution] Make sure there's a cursor located after document load of the HTML editor

[Milan Crha <mcrha src gnome org>]

commit 811dd83807596f2599373bd1994036b9b4eeebb9
Author: Milan Crha <mcrha redhat com>
Date:   Thu Aug 18 09:47:17 2016 +0200

    Make sure there's a cursor located after document load of the HTML editor
    
    It could happen that the E_CONTENT_EDITOR_INSERT_REPLACE_ALL made
    the editor in a state where was no cursor placed in the body. This
    affected mostly the unit tests of the HTML editor, but it should
    not cause any issues in general.

 .../web-extension/e-editor-web-extension.c         |   41 ++++++++++++++++++++
 1 files changed, 41 insertions(+), 0 deletions(-)
---
diff --git a/modules/webkit-editor/web-extension/e-editor-web-extension.c 
b/modules/webkit-editor/web-extension/e-editor-web-extension.c
index 38a2a5b..5f06110 100644
--- a/modules/webkit-editor/web-extension/e-editor-web-extension.c
+++ b/modules/webkit-editor/web-extension/e-editor-web-extension.c
@@ -28,6 +28,12 @@
 #include <webkit2/webkit-web-extension.h>
 #include <camel/camel.h>
 
+#define WEBKIT_DOM_USE_UNSTABLE_API
+#include <webkitdom/WebKitDOMDocumentUnstable.h>
+#include <webkitdom/WebKitDOMDOMSelection.h>
+#include <webkitdom/WebKitDOMDOMWindowUnstable.h>
+#undef WEBKIT_DOM_USE_UNSTABLE_API
+
 #include "web-extensions/e-dom-utils.h"
 
 #include "e-editor-page.h"
@@ -2423,6 +2429,37 @@ web_page_send_request_cb (WebKitWebPage *web_page,
 }
 
 static void
+web_page_document_loaded_cb (WebKitWebPage *web_page,
+                            gpointer user_data)
+{
+       WebKitDOMDocument *document;
+       WebKitDOMRange *range = NULL;
+       WebKitDOMDOMWindow *dom_window;
+       WebKitDOMDOMSelection *dom_selection;
+
+       g_return_if_fail (WEBKIT_IS_WEB_PAGE (web_page));
+
+       document = webkit_web_page_get_dom_document (web_page);
+       if (!document)
+               return;
+
+       dom_window = webkit_dom_document_get_default_view (document);
+       dom_selection = webkit_dom_dom_window_get_selection (dom_window);
+
+       /* Make sure there is a cursor located in the body after the document loads. */
+       if (!webkit_dom_dom_selection_get_anchor_node (dom_selection) &&
+           !webkit_dom_dom_selection_get_focus_node (dom_selection)) {
+               range = webkit_dom_document_caret_range_from_point (document, 0, 0);
+               webkit_dom_dom_selection_remove_all_ranges (dom_selection);
+               webkit_dom_dom_selection_add_range (dom_selection, range);
+       }
+
+       g_clear_object (&range);
+       g_clear_object (&dom_selection);
+       g_clear_object (&dom_window);
+}
+
+static void
 web_page_created_cb (WebKitWebExtension *wk_extension,
                      WebKitWebPage *web_page,
                      EEditorWebExtension *extension)
@@ -2444,6 +2481,10 @@ web_page_created_cb (WebKitWebExtension *wk_extension,
        g_signal_connect (
                web_page, "send-request",
                G_CALLBACK (web_page_send_request_cb), extension);
+
+       g_signal_connect (
+               web_page, "document-loaded",
+               G_CALLBACK (web_page_document_loaded_cb), NULL);
 }
 
 void