/*
* e-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/>
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include "e-signature-preview.h"
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <glib/gstdio.h>
#include "e-util/e-signature-utils.h"
#define E_SIGNATURE_PREVIEW_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_SIGNATURE_PREVIEW, ESignaturePreviewPrivate))
enum {
PROP_0,
PROP_ALLOW_SCRIPTS,
PROP_SIGNATURE
};
enum {
REFRESH,
LAST_SIGNAL
};
struct _ESignaturePreviewPrivate {
ESignature *signature;
guint allow_scripts : 1;
};
static gpointer parent_class;
static guint signals[LAST_SIGNAL];
static void
signature_preview_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_ALLOW_SCRIPTS:
e_signature_preview_set_allow_scripts (
E_SIGNATURE_PREVIEW (object),
g_value_get_boolean (value));
return;
case PROP_SIGNATURE:
e_signature_preview_set_signature (
E_SIGNATURE_PREVIEW (object),
g_value_get_object (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
signature_preview_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_ALLOW_SCRIPTS:
g_value_set_boolean (
value, e_signature_preview_get_allow_scripts (
E_SIGNATURE_PREVIEW (object)));
return;
case PROP_SIGNATURE:
g_value_set_object (
value, e_signature_preview_get_signature (
E_SIGNATURE_PREVIEW (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
signature_preview_dispose (GObject *object)
{
ESignaturePreviewPrivate *priv;
priv = E_SIGNATURE_PREVIEW_GET_PRIVATE (object);
if (priv->signature != NULL) {
g_object_unref (priv->signature);
priv->signature = NULL;
}
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
signature_preview_url_requested (GtkHTML *html,
const gchar *url,
GtkHTMLStream *handle)
{
GtkHTMLStreamStatus status;
gchar buffer[128];
gchar *filename;
gssize size;
gint fd;
/* FIXME Use GInputStream for this. */
if (g_str_has_prefix (url, "file:"))
filename = g_filename_from_uri (url, NULL, NULL);
else
filename = g_strdup (url);
fd = g_open (filename, O_RDONLY, 0);
g_free (filename);
status = GTK_HTML_STREAM_OK;
if (fd != -1) {
while ((size = read (fd, buffer, sizeof (buffer)))) {
if (size == -1) {
status = GTK_HTML_STREAM_ERROR;
break;
} else
gtk_html_write (html, handle, buffer, size);
}
} else
status = GTK_HTML_STREAM_ERROR;
gtk_html_end (html, handle, status);
if (fd > 0)
close (fd);
}
static void
signature_preview_refresh (ESignaturePreview *preview)
{
GtkHTML *html;
ESignature *signature;
gchar *content = NULL;
gsize length;
/* XXX We should show error messages in the preview. */
html = GTK_HTML (preview);
signature = e_signature_preview_get_signature (preview);
if (signature == NULL)
goto clear;
if (signature->script && !preview->priv->allow_scripts)
goto clear;
if (signature->script)
content = e_run_signature_script (signature->filename);
else
content = e_read_signature_file (signature, FALSE, NULL);
if (content == NULL || *content == '\0')
goto clear;
length = strlen (content);
if (signature->html)
gtk_html_load_from_string (html, content, length);
else {
GtkHTMLStream *stream;
stream = gtk_html_begin_content (
html, "text/html; charset=utf-8");
gtk_html_write (html, stream, "<PRE>", 5);
if (length > 0)
gtk_html_write (html, stream, content, length);
gtk_html_write (html, stream, "</PRE>", 6);
gtk_html_end (html, stream, GTK_HTML_STREAM_OK);
}
g_free (content);
return;
clear:
gtk_html_load_from_string (html, " ", 1);
g_free (content);
}
static void
signature_preview_class_init (ESignaturePreviewClass *class)
{
GObjectClass *object_class;
GtkHTMLClass *html_class;
parent_class = g_type_class_peek_parent (class);
g_type_class_add_private (class, sizeof (ESignaturePreviewPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->set_property = signature_preview_set_property;
object_class->get_property = signature_preview_get_property;
object_class->dispose = signature_preview_dispose;
html_class = GTK_HTML_CLASS (class);
html_class->url_requested = signature_preview_url_requested;
class->refresh = signature_preview_refresh;
g_object_class_install_property (
object_class,
PROP_ALLOW_SCRIPTS,
g_param_spec_boolean (
"allow-scripts",
"Allow Scripts",
NULL,
TRUE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (
object_class,
PROP_SIGNATURE,
g_param_spec_object (
"signature",
"Signature",
NULL,
E_TYPE_SIGNATURE,
G_PARAM_READWRITE));
signals[REFRESH] = g_signal_new (
"refresh",
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (ESignaturePreviewClass, refresh),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
signature_preview_init (ESignaturePreview *preview)
{
preview->priv = E_SIGNATURE_PREVIEW_GET_PRIVATE (preview);
}
GType
e_signature_preview_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0)) {
static const GTypeInfo type_info = {
sizeof (ESignaturePreviewClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) signature_preview_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (ESignaturePreview),
0, /* n_preallocs */
(GInstanceInitFunc) signature_preview_init,
NULL /* value_table */
};
type = g_type_register_static (
GTK_TYPE_HTML, "ESignaturePreview", &type_info, 0);
}
return type;
}
GtkWidget *
e_signature_preview_new (void)
{
return g_object_new (E_TYPE_SIGNATURE_PREVIEW, NULL);
}
void
e_signature_preview_refresh (ESignaturePreview *preview)
{
g_return_if_fail (E_IS_SIGNATURE_PREVIEW (preview));
g_signal_emit (preview, signals[REFRESH], 0);
}
gboolean
e_signature_preview_get_allow_scripts (ESignaturePreview *preview)
{
g_return_val_if_fail (E_IS_SIGNATURE_PREVIEW (preview), FALSE);
return preview->priv->allow_scripts;
}
void
e_signature_preview_set_allow_scripts (ESignaturePreview *preview,
gboolean allow_scripts)
{
g_return_if_fail (E_IS_SIGNATURE_PREVIEW (preview));
preview->priv->allow_scripts = allow_scripts;
g_object_notify (G_OBJECT (preview), "allow-scripts");
}
ESignature *
e_signature_preview_get_signature (ESignaturePreview *preview)
{
g_return_val_if_fail (E_IS_SIGNATURE_PREVIEW (preview), NULL);
return preview->priv->signature;
}
void
e_signature_preview_set_signature (ESignaturePreview *preview,
ESignature *signature)
{
g_return_if_fail (E_IS_SIGNATURE_PREVIEW (preview));
if (signature != NULL) {
g_return_if_fail (E_IS_SIGNATURE (signature));
g_object_ref (signature);
}
if (preview->priv->signature != NULL)
g_object_unref (preview->priv->signature);
preview->priv->signature = signature;
g_object_notify (G_OBJECT (preview), "signature");
e_signature_preview_refresh (preview);
}
