/*
* e-mail-signature-preview.c
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see .
*
*/
#include "e-mail-signature-preview.h"
#include
#include
#include
#include
#include "e-alert-sink.h"
#define E_MAIL_SIGNATURE_PREVIEW_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_MAIL_SIGNATURE_PREVIEW, EMailSignaturePreviewPrivate))
#define SOURCE_IS_MAIL_SIGNATURE(source) \
(e_source_has_extension ((source), E_SOURCE_EXTENSION_MAIL_SIGNATURE))
struct _EMailSignaturePreviewPrivate {
ESourceRegistry *registry;
GCancellable *cancellable;
gchar *source_uid;
};
enum {
PROP_0,
PROP_REGISTRY,
PROP_SOURCE_UID
};
enum {
REFRESH,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
G_DEFINE_TYPE (
EMailSignaturePreview,
e_mail_signature_preview,
E_TYPE_WEB_VIEW)
static void
replace_local_image_links (WebKitDOMDocument *document)
{
gint ii, length;
WebKitDOMNodeList *list;
list = webkit_dom_document_query_selector_all (
document, "img[src^=\"file://\"]", NULL);
length = webkit_dom_node_list_get_length (list);
for (ii = 0; ii < length; ii++) {
gchar *src, *new_src;
WebKitDOMHTMLImageElement *img;
img = WEBKIT_DOM_HTML_IMAGE_ELEMENT (
webkit_dom_node_list_item (list, ii));
src = webkit_dom_html_image_element_get_src (img);
/* this forms "evo-file://", which can be loaded,
* while "file://" cannot be, due to WebKit policy */
new_src = g_strconcat ("evo-", src, NULL);
webkit_dom_html_image_element_set_src (img, new_src);
g_free (new_src);
g_free (src);
}
list = webkit_dom_document_get_elements_by_tag_name ( document, "iframe");
length = webkit_dom_node_list_get_length (list);
for (ii = 0; ii < length; ii++) {
WebKitDOMDocument *content_document;
WebKitDOMHTMLIFrameElement *iframe;
iframe = WEBKIT_DOM_HTML_IFRAME_ELEMENT (
webkit_dom_node_list_item (list, ii));
content_document =
webkit_dom_html_iframe_element_get_content_document (iframe);
if (content_document && WEBKIT_DOM_IS_DOCUMENT (content_document))
replace_local_image_links (content_document);
}
}
static void
signature_preview_document_loaded_cb (WebKitWebView *web_view,
WebKitWebFrame *web_frame,
gpointer user_data)
{
replace_local_image_links (webkit_web_view_get_dom_document (web_view));
}
static void
mail_signature_preview_load_cb (ESource *source,
GAsyncResult *result,
EMailSignaturePreview *preview)
{
ESourceMailSignature *extension;
const gchar *extension_name;
const gchar *mime_type;
gchar *contents = NULL;
GError *error = NULL;
e_source_mail_signature_load_finish (
source, result, &contents, NULL, &error);
/* Ignore cancellations. */
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
g_warn_if_fail (contents == NULL);
g_object_unref (preview);
g_error_free (error);
return;
} else if (error != NULL) {
g_warn_if_fail (contents == NULL);
e_alert_submit (
E_ALERT_SINK (preview),
"widgets:no-load-signature",
error->message, NULL);
g_object_unref (preview);
g_error_free (error);
return;
}
g_return_if_fail (contents != NULL);
extension_name = E_SOURCE_EXTENSION_MAIL_SIGNATURE;
extension = e_source_get_extension (source, extension_name);
mime_type = e_source_mail_signature_get_mime_type (extension);
if (g_strcmp0 (mime_type, "text/html") == 0) {
e_web_view_load_string (E_WEB_VIEW (preview), contents);
} else {
gchar *string;
string = g_markup_printf_escaped ("%s
", contents);
e_web_view_load_string (E_WEB_VIEW (preview), string);
g_free (string);
}
g_free (contents);
g_object_unref (preview);
}
static void
mail_signature_preview_set_registry (EMailSignaturePreview *preview,
ESourceRegistry *registry)
{
g_return_if_fail (E_IS_SOURCE_REGISTRY (registry));
g_return_if_fail (preview->priv->registry == NULL);
preview->priv->registry = g_object_ref (registry);
}
static void
mail_signature_preview_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_REGISTRY:
mail_signature_preview_set_registry (
E_MAIL_SIGNATURE_PREVIEW (object),
g_value_get_object (value));
return;
case PROP_SOURCE_UID:
e_mail_signature_preview_set_source_uid (
E_MAIL_SIGNATURE_PREVIEW (object),
g_value_get_string (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
mail_signature_preview_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_REGISTRY:
g_value_set_object (
value,
e_mail_signature_preview_get_registry (
E_MAIL_SIGNATURE_PREVIEW (object)));
return;
case PROP_SOURCE_UID:
g_value_set_string (
value,
e_mail_signature_preview_get_source_uid (
E_MAIL_SIGNATURE_PREVIEW (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
mail_signature_preview_dispose (GObject *object)
{
EMailSignaturePreviewPrivate *priv;
priv = E_MAIL_SIGNATURE_PREVIEW_GET_PRIVATE (object);
if (priv->registry != NULL) {
g_object_unref (priv->registry);
priv->registry = NULL;
}
if (priv->cancellable != NULL) {
g_cancellable_cancel (priv->cancellable);
g_object_unref (priv->cancellable);
priv->cancellable = NULL;
}
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_mail_signature_preview_parent_class)->
dispose (object);
}
static void
mail_signature_preview_finalize (GObject *object)
{
EMailSignaturePreviewPrivate *priv;
priv = E_MAIL_SIGNATURE_PREVIEW_GET_PRIVATE (object);
g_free (priv->source_uid);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (e_mail_signature_preview_parent_class)->
finalize (object);
}
static void
mail_signature_preview_refresh (EMailSignaturePreview *preview)
{
ESourceRegistry *registry;
ESource *source;
const gchar *extension_name;
const gchar *source_uid;
/* Cancel any unfinished refreshes. */
if (preview->priv->cancellable != NULL) {
g_cancellable_cancel (preview->priv->cancellable);
g_object_unref (preview->priv->cancellable);
preview->priv->cancellable = NULL;
}
source_uid = e_mail_signature_preview_get_source_uid (preview);
if (source_uid == NULL)
goto fail;
registry = e_mail_signature_preview_get_registry (preview);
source = e_source_registry_ref_source (registry, source_uid);
if (source == NULL)
goto fail;
extension_name = E_SOURCE_EXTENSION_MAIL_SIGNATURE;
if (!e_source_has_extension (source, extension_name)) {
g_object_unref (source);
goto fail;
}
preview->priv->cancellable = g_cancellable_new ();
e_source_mail_signature_load (
source, G_PRIORITY_DEFAULT,
preview->priv->cancellable, (GAsyncReadyCallback)
mail_signature_preview_load_cb, g_object_ref (preview));
g_object_unref (source);
return;
fail:
e_web_view_clear (E_WEB_VIEW (preview));
}
static void
e_mail_signature_preview_class_init (EMailSignaturePreviewClass *class)
{
GObjectClass *object_class;
g_type_class_add_private (class, sizeof (EMailSignaturePreviewPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->set_property = mail_signature_preview_set_property;
object_class->get_property = mail_signature_preview_get_property;
object_class->dispose = mail_signature_preview_dispose;
object_class->finalize = mail_signature_preview_finalize;
class->refresh = mail_signature_preview_refresh;
g_object_class_install_property (
object_class,
PROP_REGISTRY,
g_param_spec_object (
"registry",
"Registry",
NULL,
E_TYPE_SOURCE_REGISTRY,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (
object_class,
PROP_SOURCE_UID,
g_param_spec_string (
"source-uid",
"Source UID",
NULL,
NULL,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
signals[REFRESH] = g_signal_new (
"refresh",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (EMailSignaturePreviewClass, refresh),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
e_mail_signature_preview_init (EMailSignaturePreview *preview)
{
preview->priv = E_MAIL_SIGNATURE_PREVIEW_GET_PRIVATE (preview);
g_signal_connect (
preview, "document-load-finished",
G_CALLBACK (signature_preview_document_loaded_cb), NULL);
}
GtkWidget *
e_mail_signature_preview_new (ESourceRegistry *registry)
{
g_return_val_if_fail (E_IS_SOURCE_REGISTRY (registry), NULL);
return g_object_new (
E_TYPE_MAIL_SIGNATURE_PREVIEW,
"registry", registry, NULL);
}
void
e_mail_signature_preview_refresh (EMailSignaturePreview *preview)
{
g_return_if_fail (E_IS_MAIL_SIGNATURE_PREVIEW (preview));
g_signal_emit (preview, signals[REFRESH], 0);
}
ESourceRegistry *
e_mail_signature_preview_get_registry (EMailSignaturePreview *preview)
{
g_return_val_if_fail (E_IS_MAIL_SIGNATURE_PREVIEW (preview), NULL);
return preview->priv->registry;
}
const gchar *
e_mail_signature_preview_get_source_uid (EMailSignaturePreview *preview)
{
g_return_val_if_fail (E_IS_MAIL_SIGNATURE_PREVIEW (preview), NULL);
return preview->priv->source_uid;
}
void
e_mail_signature_preview_set_source_uid (EMailSignaturePreview *preview,
const gchar *source_uid)
{
g_return_if_fail (E_IS_MAIL_SIGNATURE_PREVIEW (preview));
/* Avoid repeatedly loading the same signature file. */
if (g_strcmp0 (source_uid, preview->priv->source_uid) == 0)
return;
g_free (preview->priv->source_uid);
preview->priv->source_uid = g_strdup (source_uid);
g_object_notify (G_OBJECT (preview), "source-uid");
e_mail_signature_preview_refresh (preview);
}