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/*
* 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/>
*
*
* Authors:
* Federico Mena Quintero <federico@ximian.com>
* Damon Chaplin <damon@ximian.com>
* Rodrigo Moya <rodrigo@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "e-cal-component-preview.h"
#include <string.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <camel/camel.h>
#include <e-util/e-util.h>
#include <e-util/e-categories-config.h>
#define E_CAL_COMPONENT_PREVIEW_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_CAL_COMPONENT_PREVIEW, ECalComponentPreviewPrivate))
G_DEFINE_TYPE (
ECalComponentPreview,
e_cal_component_preview,
E_TYPE_WEB_VIEW)
struct _ECalComponentPreviewPrivate {
/* information about currently showing component in a preview;
* if it didn't change then the preview is not updated */
gchar *cal_uid;
gchar *comp_uid;
struct icaltimetype comp_last_modified;
gint comp_sequence;
};
#define HTML_HEADER "<!doctype html public \"-//W3C//DTD HTML 4.0 TRANSITIONAL//EN\">\n<html>\n" \
"<head>\n<meta name=\"generator\" content=\"Evolution Calendar Component\">\n" \
"<link type=\"text/css\" rel=\"stylesheet\" href=\"evo-file://" EVOLUTION_PRIVDATADIR "/theme/webview.css\">\n" \
"<style>\n" \
".description { font-family: monospace; font-size: 1em; }\n" \
"</style>\n" \
"</head>"
static void
clear_comp_info (ECalComponentPreview *preview)
{
ECalComponentPreviewPrivate *priv;
g_return_if_fail (E_IS_CAL_COMPONENT_PREVIEW (preview));
priv = preview->priv;
g_free (priv->cal_uid);
priv->cal_uid = NULL;
g_free (priv->comp_uid);
priv->comp_uid = NULL;
priv->comp_last_modified = icaltime_null_time ();
priv->comp_sequence = -1;
}
/* Stores information about actually shown component and
* returns whether component in the preview changed */
static gboolean
update_comp_info (ECalComponentPreview *preview,
ECalClient *client,
ECalComponent *comp)
{
ECalComponentPreviewPrivate *priv;
gboolean changed;
g_return_val_if_fail (preview != NULL, TRUE);
g_return_val_if_fail (E_IS_CAL_COMPONENT_PREVIEW (preview), TRUE);
priv = preview->priv;
if (!E_IS_CAL_COMPONENT (comp) || !E_IS_CAL_CLIENT (client)) {
changed = !priv->cal_uid;
clear_comp_info (preview);
} else {
ESource *source;
const gchar *uid;
gchar *cal_uid;
gchar *comp_uid;
struct icaltimetype comp_last_modified, *itm = NULL;
gint *sequence = NULL;
gint comp_sequence;
source = e_client_get_source (E_CLIENT (client));
cal_uid = g_strdup (e_source_get_uid (source));
e_cal_component_get_uid (comp, &uid);
comp_uid = g_strdup (uid);
e_cal_component_get_last_modified (comp, &itm);
if (itm) {
comp_last_modified = *itm;
e_cal_component_free_icaltimetype (itm);
} else
comp_last_modified = icaltime_null_time ();
e_cal_component_get_sequence (comp, &sequence);
if (sequence) {
comp_sequence = *sequence;
e_cal_component_free_sequence (sequence);
} else
comp_sequence = 0;
changed = !priv->cal_uid || !priv->comp_uid || !cal_uid || !comp_uid ||
!g_str_equal (priv->cal_uid, cal_uid) ||
!g_str_equal (priv->comp_uid, comp_uid) ||
priv->comp_sequence != comp_sequence ||
icaltime_compare (priv->comp_last_modified, comp_last_modified) != 0;
clear_comp_info (preview);
priv->cal_uid = cal_uid;
priv->comp_uid = comp_uid;
priv->comp_sequence = comp_sequence;
priv->comp_last_modified = comp_last_modified;
}
return changed;
}
/* Converts a time_t to a string, relative to the specified timezone */
static gchar *
timet_to_str_with_zone (ECalComponentDateTime *dt,
ECalClient *client,
icaltimezone *default_zone,
gboolean use_24_hour_format)
{
struct icaltimetype itt;
icaltimezone *zone;
struct tm tm;
gchar buf[256];
if (dt->tzid) {
/* If we can't find the zone, we'll guess its "local" */
if (!e_cal_client_get_timezone_sync (client, dt->tzid, &zone, NULL, NULL))
zone = NULL;
} else if (dt->value->is_utc) {
zone = icaltimezone_get_utc_timezone ();
} else {
zone = NULL;
}
itt = *dt->value;
if (zone)
icaltimezone_convert_time (&itt, zone, default_zone);
tm = icaltimetype_to_tm (&itt);
e_time_format_date_and_time (
&tm, use_24_hour_format,
FALSE, FALSE, buf, sizeof (buf));
return g_locale_to_utf8 (buf, -1, NULL, NULL, NULL);
}
static void
cal_component_preview_write_html (GString *buffer,
ECalClient *client,
ECalComponent *comp,
icaltimezone *default_zone,
gboolean use_24_hour_format)
{
ECalComponentText text;
ECalComponentDateTime dt;
gchar *str;
GString *string;
GSList *list, *iter;
icalcomponent *icalcomp;
icalproperty *icalprop;
icalproperty_status status;
const gchar *location;
gint *priority_value;
g_return_if_fail (E_IS_CAL_COMPONENT (comp));
/* write document header */
e_cal_component_get_summary (comp, &text);
g_string_append (buffer, HTML_HEADER);
g_string_append (buffer, "<body>");
if (text.value)
g_string_append_printf (buffer, "<h2>%s</h2>", text.value);
else
g_string_append_printf (buffer, "<h2><i>%s</i></h2>",_("Untitled"));
g_string_append (buffer, "<table border=\"0\" cellspacing=\"5\">");
/* write icons for the categories */
string = g_string_new (NULL);
e_cal_component_get_categories_list (comp, &list);
if (list != NULL)
g_string_append_printf (buffer, "<tr><th>%s</th><td>", _("Categories:"));
for (iter = list; iter != NULL; iter = iter->next) {
const gchar *category = iter->data;
const gchar *icon_file;
icon_file = e_categories_get_icon_file_for (category);
if (icon_file && g_file_test (icon_file, G_FILE_TEST_EXISTS)) {
gchar *uri;
uri = g_filename_to_uri (icon_file, NULL, NULL);
g_string_append_printf (
buffer, "<img alt=\"%s\" src=\"evo-%s\">",
category, uri);
g_free (uri);
} else {
if (iter != list)
g_string_append_len (string, ", ", 2);
g_string_append (string, category);
}
}
if (string->len > 0)
g_string_append_printf (buffer, "%s", string->str);
if (list != NULL)
g_string_append (buffer, "</td></tr>");
e_cal_component_free_categories_list (list);
g_string_free (string, TRUE);
/* write location */
e_cal_component_get_location (comp, &location);
if (location)
g_string_append_printf (buffer, "<tr><th>%s</th><td>%s</td></tr>",
_("Summary:"), text.value);
/* write start date */
e_cal_component_get_dtstart (comp, &dt);
if (dt.value != NULL) {
str = timet_to_str_with_zone (
&dt, client, default_zone, use_24_hour_format);
g_string_append_printf (buffer, "<tr><th>%s</th><td>%s</td></tr>",
_("Start Date:"), str);
g_free (str);
}
e_cal_component_free_datetime (&dt);
/* write end date */
e_cal_component_get_dtend (comp, &dt);
if (dt.value != NULL) {
str = timet_to_str_with_zone (
&dt, client, default_zone, use_24_hour_format);
g_string_append_printf (buffer,"<tr><th>%s</th><td>%s</td></tr>",
_("End Date:"), str);
g_free (str);
}
e_cal_component_free_datetime (&dt);
/* write Due Date */
e_cal_component_get_due (comp, &dt);
if (dt.value != NULL) {
str = timet_to_str_with_zone (
&dt, client, default_zone, use_24_hour_format);
g_string_append_printf (buffer, "<tr><th>%s</th><td>%s</td></tr>",
_("Due Date:"), str);
g_free (str);
}
e_cal_component_free_datetime (&dt);
/* write status */
icalcomp = e_cal_component_get_icalcomponent (comp);
icalprop = icalcomponent_get_first_property (
icalcomp, ICAL_STATUS_PROPERTY);
if (icalprop != NULL) {
g_string_append_printf (buffer, "<tr><th>%s</th>",
_("Status:"));
e_cal_component_get_status (comp, &status);
switch (status) {
case ICAL_STATUS_INPROCESS :
str = g_strdup (_("In Progress"));
break;
case ICAL_STATUS_COMPLETED :
str = g_strdup (_("Completed"));
break;
case ICAL_STATUS_CANCELLED :
str = g_strdup (_("Canceled"));
break;
case ICAL_STATUS_NONE :
default :
str = g_strdup (_("Not Started"));
break;
}
g_string_append_printf (buffer, "<td>%s</td></tr>", str);
g_free (str);
}
/* write priority */
e_cal_component_get_priority (comp, &priority_value);
if (priority_value && *priority_value != 0) {
g_string_append_printf (buffer, "<tr><th>%s</th>",
_("Priority:"));
if (*priority_value <= 4)
str = g_strdup (_("High"));
else if (*priority_value == 5)
str = g_strdup (_("Normal"));
else
str = g_strdup (_("Low"));
g_string_append_printf (buffer, "<td>%s</td></tr>", str);
g_free (str);
}
if (priority_value)
e_cal_component_free_priority (priority_value);
/* write description and URL */
g_string_append (buffer, "<tr><td colspan=\"2\"><hr></td></tr>");
e_cal_component_get_description_list (comp, &list);
if (list) {
GSList *node;
g_string_append_printf (buffer, "<tr><th>%s</th>",
_("Description:"));
g_string_append (buffer, "<td class=\"description\">");
for (node = list; node != NULL; node = node->next) {
gchar *html;
text = * (ECalComponentText *) node->data;
html = camel_text_to_html (
text.value ? text.value : "",
CAMEL_MIME_FILTER_TOHTML_CONVERT_NL |
CAMEL_MIME_FILTER_TOHTML_CONVERT_SPACES |
CAMEL_MIME_FILTER_TOHTML_CONVERT_URLS |
CAMEL_MIME_FILTER_TOHTML_CONVERT_ADDRESSES, 0);
if (html)
g_string_append_printf (buffer, "%s", html);
g_free (html);
}
g_string_append (buffer, "</td></tr>");
e_cal_component_free_text_list (list);
}
/* URL */
e_cal_component_get_url (comp, (const gchar **) &str);
if (str) {
g_string_append_printf (buffer, "<tr><th>%s</th><td><a href=\"%s\">%s</a></td></tr>",
_("Web Page:"), str, str);
}
g_string_append (buffer, "</table>");
/* close document */
g_string_append (buffer, "</body></html>");
}
static void
cal_component_preview_finalize (GObject *object)
{
clear_comp_info (E_CAL_COMPONENT_PREVIEW (object));
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (e_cal_component_preview_parent_class)->finalize (object);
}
static void
e_cal_component_preview_class_init (ECalComponentPreviewClass *class)
{
GObjectClass *object_class;
g_type_class_add_private (class, sizeof (ECalComponentPreviewPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->finalize = cal_component_preview_finalize;
}
static void
e_cal_component_preview_init (ECalComponentPreview *preview)
{
preview->priv = E_CAL_COMPONENT_PREVIEW_GET_PRIVATE (preview);
}
GtkWidget *
e_cal_component_preview_new (void)
{
return g_object_new (E_TYPE_CAL_COMPONENT_PREVIEW, NULL);
}
void
e_cal_component_preview_display (ECalComponentPreview *preview,
ECalClient *client,
ECalComponent *comp,
icaltimezone *zone,
gboolean use_24_hour_format)
{
GString *buffer;
g_return_if_fail (E_IS_CAL_COMPONENT_PREVIEW (preview));
g_return_if_fail (E_IS_CAL_COMPONENT (comp));
/* do not update preview when setting the same component as last time,
* which even didn't change */
if (!update_comp_info (preview, client, comp))
return;
/* XXX The initial buffer size is arbitrary. Tune it. */
buffer = g_string_sized_new (4096);
cal_component_preview_write_html (
buffer, client, comp, zone, use_24_hour_format);
e_web_view_load_string (E_WEB_VIEW (preview), buffer->str);
g_string_free (buffer, TRUE);
}
void
e_cal_component_preview_clear (ECalComponentPreview *preview)
{
g_return_if_fail (E_IS_CAL_COMPONENT_PREVIEW (preview));
clear_comp_info (preview);
e_web_view_clear (E_WEB_VIEW (preview));
}
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