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-rw-r--r--e-util/e-mail-signature-preview.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/e-util/e-mail-signature-preview.c b/e-util/e-mail-signature-preview.c
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index 0000000000..8bf27fdb52
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+++ b/e-util/e-mail-signature-preview.c
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+/*
+ * 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
+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);
+}
+
+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);
+}
generated by cgit (git 2.34.1) at 2024-11-12 02:40:42 +0800