diff options
Diffstat (limited to 'widgets/misc/e-mail-signature-preview.c')
| -rw-r--r-- | widgets/misc/e-mail-signature-preview.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/widgets/misc/e-mail-signature-preview.c b/widgets/misc/e-mail-signature-preview.c new file mode 100644 index 0000000000..02d93283ac --- /dev/null +++ b/widgets/misc/e-mail-signature-preview.c @@ -0,0 +1,360 @@ +/* + * 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 <libedataserver/e-source-mail-signature.h> + +#include <libevolution-utils/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); +} |