/*
* 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; either
* version 2 of the License, or (at your option) version 3.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*/
#include "e-mail-signature-preview.h"
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <glib/gstdio.h>
#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 (WebKitDOMElement *element)
{
if (!element)
return;
if (WEBKIT_DOM_IS_HTML_IMAGE_ELEMENT (element)) {
WebKitDOMHTMLImageElement *img;
gchar *src;
img = WEBKIT_DOM_HTML_IMAGE_ELEMENT (element);
src = webkit_dom_html_image_element_get_src (img);
if (src && g_ascii_strncasecmp (src, "file://", 7) == 0) {
gchar *new_src;
/* 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);
}
if (WEBKIT_DOM_IS_HTML_IFRAME_ELEMENT (element)) {
WebKitDOMDocument *frame_document;
frame_document =
webkit_dom_html_iframe_element_get_content_document (
WEBKIT_DOM_HTML_IFRAME_ELEMENT (element));
replace_local_image_links (WEBKIT_DOM_ELEMENT (frame_document));
}
replace_local_image_links (webkit_dom_element_get_first_element_child (element));
while (element = webkit_dom_element_get_next_element_sibling (element), element) {
replace_local_image_links (element);
}
}
static void
signature_preview_document_loaded_cb (WebKitWebView *web_view,
WebKitWebFrame *web_frame,
gpointer user_data)
{
WebKitDOMDocument *document;
WebKitDOMNode *node;
document = webkit_web_view_get_dom_document (web_view);
for (node = webkit_dom_node_get_first_child (WEBKIT_DOM_NODE (document));
node;
node = webkit_dom_node_get_next_sibling (node)) {
if (WEBKIT_DOM_IS_ELEMENT (node))
replace_local_image_links (WEBKIT_DOM_ELEMENT (node));
}
}
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 ("<pre>%s</pre>", 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);
}
