[evolution] EHTMLEditorView - Queue the load operations if the view is not ready

[Tomas Popela <tpopela src gnome org>]

commit f2e23876e09ea9ef2338ba73547f01296640505c
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Nov 3 17:40:07 2014 +0100

    EHTMLEditorView - Queue the load operations if the view is not ready
    
    And process them when the view is ready. I just reintroduced the code
    from 
https://git.gnome.org/browse/evolution/commit/?h=wip/webkit-composer&id=3de9a46ff406f29c537d6e4ec1e75c56f0b53bfe
    that I removed in past.

 e-util/e-html-editor-view.c |   47 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 47 insertions(+), 0 deletions(-)
---
diff --git a/e-util/e-html-editor-view.c b/e-util/e-html-editor-view.c
index b9b8a90..37eec58 100644
--- a/e-util/e-html-editor-view.c
+++ b/e-util/e-html-editor-view.c
@@ -94,6 +94,8 @@ struct _EHTMLEditorViewPrivate {
        GHashTable *old_settings;
 
        GdkEventKey *key_event;
+
+       GQueue *post_reload_operations;
 };
 
 enum {
@@ -121,6 +123,14 @@ static guint signals[LAST_SIGNAL] = { 0 };
 
 static CamelDataCache *emd_global_http_cache = NULL;
 
+typedef void (*PostReloadOperationFunc) (EHTMLEditorView *view, gpointer data);
+
+typedef struct {
+       PostReloadOperationFunc func;
+       gpointer data;
+       GDestroyNotify data_free_func;
+} PostReloadOperation;
+
 G_DEFINE_TYPE_WITH_CODE (
        EHTMLEditorView,
        e_html_editor_view,
@@ -128,6 +138,27 @@ G_DEFINE_TYPE_WITH_CODE (
        G_IMPLEMENT_INTERFACE (
                E_TYPE_EXTENSIBLE, NULL))
 
+static void
+html_editor_view_queue_post_reload_operation (EHTMLEditorView *view,
+                                            PostReloadOperationFunc func,
+                                            gpointer data,
+                                            GDestroyNotify data_free_func)
+{
+       PostReloadOperation *op;
+
+       g_return_if_fail (func != NULL);
+
+       if (view->priv->post_reload_operations == NULL)
+               view->priv->post_reload_operations = g_queue_new ();
+
+       op = g_new0 (PostReloadOperation, 1);
+       op->func = func;
+       op->data = data;
+       op->data_free_func = data_free_func;
+
+       g_queue_push_head (view->priv->post_reload_operations, op);
+}
+
 static WebKitDOMRange *
 html_editor_view_get_dom_range (EHTMLEditorView *view)
 {
@@ -7392,6 +7423,22 @@ void
 e_html_editor_view_set_text_plain (EHTMLEditorView *view,
                                    const gchar *text)
 {
+       WebKitLoadStatus status;
+
+       /* It can happen that the view is not ready yet (it is in the middle of
+        * another load operation) so we have to queue the current operation and
+        * redo it again when the view is ready. This was happening when loading
+        * the stuff in EMailSignatureEditor. */
+       status = webkit_web_view_get_load_status (WEBKIT_WEB_VIEW (view));
+       if (status != WEBKIT_LOAD_FINISHED) {
+               html_editor_view_queue_post_reload_operation (
+                       view,
+                       (PostReloadOperationFunc) e_html_editor_view_set_text_plain,
+                       g_strdup (text),
+                       g_free);
+               return;
+       }
+
        view->priv->reload_in_progress = TRUE;
 
        html_editor_convert_view_content (view, text);