/*
* e-web-view-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 <http://www.gnu.org/licenses/>.
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include "evolution-config.h"
#include "e-misc-utils.h"
#include "e-web-view-preview.h"
#include <string.h>
#include <glib/gi18n-lib.h>
#define E_WEB_VIEW_PREVIEW_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_WEB_VIEW_PREVIEW, EWebViewPreviewPrivate))
struct _EWebViewPreviewPrivate {
gboolean escape_values;
GString *updating_content; /* is NULL when not between begin_update/end_update */
};
enum {
PROP_0,
PROP_TREE_VIEW,
PROP_PREVIEW_WIDGET,
PROP_ESCAPE_VALUES
};
G_DEFINE_TYPE (
EWebViewPreview,
e_web_view_preview,
GTK_TYPE_PANED);
static void
web_view_preview_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_ESCAPE_VALUES:
e_web_view_preview_set_escape_values (
E_WEB_VIEW_PREVIEW (object),
g_value_get_boolean (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
web_view_preview_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_TREE_VIEW:
g_value_set_object (
value, e_web_view_preview_get_tree_view (
E_WEB_VIEW_PREVIEW (object)));
return;
case PROP_PREVIEW_WIDGET:
g_value_set_object (
value, e_web_view_preview_get_preview (
E_WEB_VIEW_PREVIEW (object)));
return;
case PROP_ESCAPE_VALUES:
g_value_set_boolean (
value, e_web_view_preview_get_escape_values (
E_WEB_VIEW_PREVIEW (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
web_view_preview_dispose (GObject *object)
{
EWebViewPreviewPrivate *priv;
priv = E_WEB_VIEW_PREVIEW_GET_PRIVATE (object);
if (priv->updating_content != NULL) {
g_string_free (priv->updating_content, TRUE);
priv->updating_content = NULL;
}
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_web_view_preview_parent_class)->dispose (object);
}
static void
e_web_view_preview_class_init (EWebViewPreviewClass *class)
{
GObjectClass *object_class;
g_type_class_add_private (class, sizeof (EWebViewPreviewPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->set_property = web_view_preview_set_property;
object_class->get_property = web_view_preview_get_property;
object_class->dispose = web_view_preview_dispose;
g_object_class_install_property (
object_class,
PROP_TREE_VIEW,
g_param_spec_object (
"tree-view",
"Tree View",
NULL,
GTK_TYPE_TREE_VIEW,
G_PARAM_READABLE));
g_object_class_install_property (
object_class,
PROP_PREVIEW_WIDGET,
g_param_spec_object (
"preview-widget",
"Preview Widget",
NULL,
GTK_TYPE_WIDGET,
G_PARAM_READABLE));
g_object_class_install_property (
object_class,
PROP_ESCAPE_VALUES,
g_param_spec_boolean (
"escape-values",
"Whether escaping values automatically, when inserting",
NULL,
TRUE,
G_PARAM_READWRITE));
}
static GtkWidget *
in_scrolled_window (GtkWidget *widget)
{
GtkWidget *sw;
g_return_val_if_fail (widget != NULL, NULL);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_container_add (GTK_CONTAINER (sw), widget);
gtk_widget_show (widget);
gtk_widget_show (sw);
return sw;
}
static void
e_web_view_preview_init (EWebViewPreview *preview)
{
GtkWidget *tree_view_sw, *web_view;
preview->priv = E_WEB_VIEW_PREVIEW_GET_PRIVATE (preview);
preview->priv->escape_values = TRUE;
gtk_orientable_set_orientation (GTK_ORIENTABLE (preview), GTK_ORIENTATION_VERTICAL);
tree_view_sw = in_scrolled_window (gtk_tree_view_new ());
web_view = e_web_view_new ();
gtk_widget_hide (tree_view_sw);
gtk_widget_show (web_view);
gtk_paned_pack1 (GTK_PANED (preview), tree_view_sw, FALSE, TRUE);
gtk_paned_pack2 (GTK_PANED (preview), web_view, TRUE, TRUE);
/* rawly 3 lines of a text plus a little bit more */
if (gtk_paned_get_position (GTK_PANED (preview)) < 85)
gtk_paned_set_position (GTK_PANED (preview), 85);
}
GtkWidget *
e_web_view_preview_new (void)
{
return g_object_new (E_TYPE_WEB_VIEW_PREVIEW, NULL);
}
GtkTreeView *
e_web_view_preview_get_tree_view (EWebViewPreview *preview)
{
g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), NULL);
return GTK_TREE_VIEW (gtk_bin_get_child (GTK_BIN (gtk_paned_get_child1 (GTK_PANED (preview)))));
}
GtkWidget *
e_web_view_preview_get_preview (EWebViewPreview *preview)
{
g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), NULL);
return gtk_paned_get_child2 (GTK_PANED (preview));
}
void
e_web_view_preview_set_preview (EWebViewPreview *preview,
GtkWidget *preview_widget)
{
GtkWidget *old_child;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (GTK_IS_WIDGET (preview_widget));
old_child = gtk_paned_get_child2 (GTK_PANED (preview));
if (old_child) {
g_return_if_fail (old_child != preview_widget);
gtk_widget_destroy (old_child);
}
gtk_paned_pack2 (GTK_PANED (preview), preview_widget, TRUE, TRUE);
}
void
e_web_view_preview_show_tree_view (EWebViewPreview *preview)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
gtk_widget_show (gtk_paned_get_child1 (GTK_PANED (preview)));
}
void
e_web_view_preview_hide_tree_view (EWebViewPreview *preview)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
gtk_widget_hide (gtk_paned_get_child1 (GTK_PANED (preview)));
}
gboolean
e_web_view_preview_get_escape_values (EWebViewPreview *preview)
{
g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), FALSE);
return preview->priv->escape_values;
}
void
e_web_view_preview_set_escape_values (EWebViewPreview *preview,
gboolean escape)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
preview->priv->escape_values = escape;
}
void
e_web_view_preview_begin_update (EWebViewPreview *preview)
{
GtkStyleContext *style_context;
GdkRGBA color;
gchar *color_value;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
if (preview->priv->updating_content) {
g_warning ("%s: Previous content update isn't finished with e_web_view_preview_end_update()", G_STRFUNC);
g_string_free (preview->priv->updating_content, TRUE);
}
style_context = gtk_widget_get_style_context (GTK_WIDGET (preview));
if (gtk_style_context_lookup_color (style_context, "theme_fg_color", &color))
color_value = g_strdup_printf ("#%06x", e_rgba_to_value (&color));
else
color_value = g_strdup (E_UTILS_DEFAULT_THEME_FG_COLOR);
preview->priv->updating_content = g_string_sized_new (1024);
g_string_append_printf (preview->priv->updating_content, "<BODY class=\"-e-web-view-background-color -e-web-view-text-color\" text=\"%s\">", color_value);
g_string_append (preview->priv->updating_content, "<TABLE width=\"100%\" border=\"0\" cols=\"2\">");
g_free (color_value);
}
void
e_web_view_preview_end_update (EWebViewPreview *preview)
{
GtkWidget *web_view;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_string_append (preview->priv->updating_content, "</TABLE></BODY>");
web_view = e_web_view_preview_get_preview (preview);
if (E_IS_WEB_VIEW (web_view))
e_web_view_load_string (E_WEB_VIEW (web_view), preview->priv->updating_content->str);
g_string_free (preview->priv->updating_content, TRUE);
preview->priv->updating_content = NULL;
}
static gchar *
replace_string (const gchar *text,
const gchar *find,
const gchar *replace)
{
const gchar *p, *next;
GString *str;
gint find_len;
g_return_val_if_fail (text != NULL, NULL);
g_return_val_if_fail (find != NULL, NULL);
g_return_val_if_fail (*find, NULL);
find_len = strlen (find);
str = g_string_new ("");
p = text;
while (next = strstr (p, find), next) {
if (p + 1 < next)
g_string_append_len (str, p, next - p);
if (replace && *replace)
g_string_append (str, replace);
p = next + find_len;
}
g_string_append (str, p);
return g_string_free (str, FALSE);
}
static gchar *
web_view_preview_escape_text (EWebViewPreview *preview,
const gchar *text)
{
gchar *utf8_valid, *res, *end;
if (!e_web_view_preview_get_escape_values (preview))
return NULL;
g_return_val_if_fail (text != NULL, NULL);
if (g_utf8_validate (text, -1, NULL)) {
res = g_markup_escape_text (text, -1);
} else {
utf8_valid = g_strdup (text);
while (end = NULL, !g_utf8_validate (utf8_valid, -1, (const gchar **) &end) && end && *end)
*end = '?';
res = g_markup_escape_text (utf8_valid, -1);
g_free (utf8_valid);
}
if (res && strchr (res, '\n')) {
/* replace line breaks with <BR> */
if (strchr (res, '\r')) {
end = replace_string (res, "\r", "");
g_free (res);
res = end;
}
end = replace_string (res, "\n", "<BR>");
g_free (res);
res = end;
}
return res;
}
void
e_web_view_preview_add_header (EWebViewPreview *preview,
gint index,
const gchar *header)
{
gchar *escaped;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_return_if_fail (header != NULL);
if (index < 1)
index = 1;
else if (index > 6)
index = 6;
escaped = web_view_preview_escape_text (preview, header);
if (escaped)
header = escaped;
g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2><H%d>%s</H%d></TD></TR>", index, header, index);
g_free (escaped);
}
void
e_web_view_preview_add_text (EWebViewPreview *preview,
const gchar *text)
{
gchar *escaped;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_return_if_fail (text != NULL);
escaped = web_view_preview_escape_text (preview, text);
if (escaped)
text = escaped;
g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2><FONT size=\"3\">%s</FONT></TD></TR>", text);
g_free (escaped);
}
void
e_web_view_preview_add_raw_html (EWebViewPreview *preview,
const gchar *raw_html)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_return_if_fail (raw_html != NULL);
g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2>%s</TD></TR>", raw_html);
}
void
e_web_view_preview_add_separator (EWebViewPreview *preview)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_string_append (preview->priv->updating_content, "<TR><TD colspan=2><HR></TD></TR>");
}
void
e_web_view_preview_add_empty_line (EWebViewPreview *preview)
{
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_string_append (preview->priv->updating_content, "<TR><TD colspan=2> </TD></TR>");
}
/* section can be NULL, but value cannot */
void
e_web_view_preview_add_section (EWebViewPreview *preview,
const gchar *section,
const gchar *value)
{
gchar *escaped_section = NULL, *escaped_value;
g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
g_return_if_fail (preview->priv->updating_content != NULL);
g_return_if_fail (value != NULL);
if (section) {
escaped_section = web_view_preview_escape_text (preview, section);
if (escaped_section)
section = escaped_section;
}
escaped_value = web_view_preview_escape_text (preview, value);
if (escaped_value)
value = escaped_value;
g_string_append_printf (preview->priv->updating_content, "<TR><TD width=\"10%%\" valign=\"top\" nowrap><FONT size=\"3\"><B>%s</B></FONT></TD><TD width=\"90%%\"><FONT size=\"3\">%s</FONT></TD></TR>", section ? section : "", value);
g_free (escaped_section);
g_free (escaped_value);
}