/* * 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) { webkit_web_view_load_string ( WEBKIT_WEB_VIEW (preview), contents, "text/html", "UTF-8", "file:///"); } else { gchar *string; string = g_markup_printf_escaped ("
%s
", contents); webkit_web_view_load_string ( WEBKIT_WEB_VIEW (preview), string, "text/html", "UTF-8", "file:///"); 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); }