path: root/libempathy-gtk/empathy-theme-adium.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2008 Collabora Ltd.
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <string.h>
#include <glib/gi18n.h>

#include <webkit/webkitnetworkrequest.h>

#include <libempathy/empathy-time.h>
#include <libempathy/empathy-utils.h>

#include "empathy-theme-adium.h"
#include "empathy-smiley-manager.h"
#include "empathy-conf.h"
#include "empathy-ui-utils.h"

#define DEBUG_FLAG EMPATHY_DEBUG_CHAT
#include <libempathy/empathy-debug.h>

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyThemeAdium)

typedef struct {
    EmpathySmileyManager *smiley_manager;
    EmpathyContact       *last_contact;
    gboolean              page_loaded;
    GList                *message_queue;
    gchar                *path;
    gchar                *default_avatar_filename;
    gchar                *template_html;
    gchar                *basedir;
    gchar                *in_content_html;
    gsize                 in_content_len;
    gchar                *in_nextcontent_html;
    gsize                 in_nextcontent_len;
    gchar                *out_content_html;
    gsize                 out_content_len;
    gchar                *out_nextcontent_html;
    gsize                 out_nextcontent_len;
    gchar                *status_html;
    gsize                 status_len;
} EmpathyThemeAdiumPriv;

static void theme_adium_iface_init (EmpathyChatViewIface *iface);

enum {
    PROP_0,
    PROP_PATH,
};

G_DEFINE_TYPE_WITH_CODE (EmpathyThemeAdium, empathy_theme_adium,
             WEBKIT_TYPE_WEB_VIEW,
             G_IMPLEMENT_INTERFACE (EMPATHY_TYPE_CHAT_VIEW,
                        theme_adium_iface_init));

static void
theme_adium_load (EmpathyThemeAdium *theme)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    gchar                 *file;
    gchar                 *template_html = NULL;
    gsize                  template_len;
    GString               *string;
    gchar                **strv = NULL;
    gchar                 *css_path;
    guint                  len = 0;
    guint                  i = 0;

    priv->basedir = g_strconcat (priv->path, G_DIR_SEPARATOR_S "Contents" G_DIR_SEPARATOR_S "Resources" G_DIR_SEPARATOR_S, NULL);

    /* Load html files */
    file = g_build_filename (priv->basedir, "Incoming", "Content.html", NULL);
    g_file_get_contents (file, &priv->in_content_html, &priv->in_content_len, NULL);
    g_free (file);

    file = g_build_filename (priv->basedir, "Incoming", "NextContent.html", NULL);
    g_file_get_contents (file, &priv->in_nextcontent_html, &priv->in_nextcontent_len, NULL);
    g_free (file);

    file = g_build_filename (priv->basedir, "Outgoing", "Content.html", NULL);
    g_file_get_contents (file, &priv->out_content_html, &priv->out_content_len, NULL);
    g_free (file);

    file = g_build_filename (priv->basedir, "Outgoing", "NextContent.html", NULL);
    g_file_get_contents (file, &priv->out_nextcontent_html, &priv->out_nextcontent_len, NULL);
    g_free (file);

    file = g_build_filename (priv->basedir, "Status.html", NULL);
    g_file_get_contents (file, &priv->status_html, &priv->status_len, NULL);
    g_free (file);

    css_path = g_build_filename (priv->basedir, "main.css", NULL);

    /* There is 2 formats for Template.html: The old one has 4 parameters,
     * the new one has 5 parameters. */
    file = g_build_filename (priv->basedir, "Template.html", NULL);
    if (g_file_get_contents (file, &template_html, &template_len, NULL)) {
        strv = g_strsplit (template_html, "%@", -1);
        len = g_strv_length (strv);
    }
    g_free (file);

    if (len != 5 && len != 6) {
        /* Either the theme has no template or it don't have the good
         * number of parameters. Fallback to use our own template. */
        g_free (template_html);
        g_strfreev (strv);

        file = empathy_file_lookup ("Template.html", "data");
        g_file_get_contents (file, &template_html, &template_len, NULL);
        g_free (file);
        strv = g_strsplit (template_html, "%@", -1);
        len = g_strv_length (strv);
    }

    /* Replace %@ with the needed information in the template html. */
    string = g_string_sized_new (template_len);
    g_string_append (string, strv[i++]);
    g_string_append (string, priv->basedir);
    g_string_append (string, strv[i++]);
    if (len == 6) {
        /* We include main.css by default */
        g_string_append_printf (string, "@import url(\"%s\");", css_path);
        g_string_append (string, strv[i++]);
        /* FIXME: We should set the variant css here */
        g_string_append (string, "");
    } else {
        /* FIXME: We should set main.css OR the variant css */
        g_string_append (string, css_path);
    }
    g_string_append (string, strv[i++]);
    g_string_append (string, ""); /* We don't want header */
    g_string_append (string, strv[i++]);
    g_string_append (string, ""); /* FIXME: We don't support footer yet */
    g_string_append (string, strv[i++]);
    priv->template_html = g_string_free (string, FALSE);

    /* Load the template */
    webkit_web_view_load_html_string (WEBKIT_WEB_VIEW (theme),
                      priv->template_html, priv->basedir);

    g_free (template_html);
    g_free (css_path);
    g_strfreev (strv);
}

static WebKitNavigationResponse
theme_adium_navigation_requested_cb (WebKitWebView        *view,
                     WebKitWebFrame       *frame,
                     WebKitNetworkRequest *request,
                     gpointer              user_data)
{
    const gchar *uri;

    uri = webkit_network_request_get_uri (request);
    empathy_url_show (GTK_WIDGET (view), uri);

    return WEBKIT_NAVIGATION_RESPONSE_IGNORE;
}

static void
theme_adium_populate_popup_cb (WebKitWebView *view,
                   GtkMenu       *menu,
                   gpointer       user_data)
{
    GtkWidget *item;

    /* Remove default menu items */
    gtk_container_foreach (GTK_CONTAINER (menu),
        (GtkCallback) gtk_widget_destroy, NULL);
    
    /* Select all item */
    item = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
    gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
    gtk_widget_show (item);
        
    g_signal_connect_swapped (item, "activate",
                  G_CALLBACK (webkit_web_view_select_all),
                  view);

    /* Copy menu item */
    if (webkit_web_view_can_copy_clipboard (view)) {
        item = gtk_image_menu_item_new_from_stock (GTK_STOCK_COPY, NULL);
        gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
        gtk_widget_show (item);
        
        g_signal_connect_swapped (item, "activate",
                      G_CALLBACK (webkit_web_view_copy_clipboard),
                      view);
    }

    /* Clear menu item */
    item = gtk_separator_menu_item_new ();
    gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
    gtk_widget_show (item);
        
    item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLEAR, NULL);
    gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
    gtk_widget_show (item);
        
    g_signal_connect_swapped (item, "activate",
                  G_CALLBACK (empathy_chat_view_clear),
                  view);

    /* FIXME: Add open_link and copy_link when those bugs are fixed:
     * https://bugs.webkit.org/show_bug.cgi?id=16092
     * https://bugs.webkit.org/show_bug.cgi?id=16562
     */
}

static gchar *
theme_adium_parse_body (EmpathyThemeAdium *theme,
            const gchar       *text)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    gboolean               use_smileys = FALSE;
    GSList                *smileys, *l;
    GString               *string;
    gint                   i;
    GRegex                *uri_regex;
    GMatchInfo            *match_info;
    gboolean               match;
    gchar                 *ret = NULL;
    gint                   prev;

    empathy_conf_get_bool (empathy_conf_get (),
                   EMPATHY_PREFS_CHAT_SHOW_SMILEYS,
                   &use_smileys);

    if (use_smileys) {
        /* Replace smileys by a <img/> tag */
        string = g_string_sized_new (strlen (text));
        smileys = empathy_smiley_manager_parse (priv->smiley_manager, text);
        for (l = smileys; l; l = l->next) {
            EmpathySmiley *smiley;

            smiley = l->data;
            if (smiley->path) {
                g_string_append_printf (string,
                            "<abbr title='%s'><img src=\"%s\"/ alt=\"%s\"/></abbr>",
                            smiley->str, smiley->path, smiley->str);
            } else {
                ret = g_markup_escape_text (smiley->str, -1);
                g_string_append (string, ret);
                g_free (ret);
            }
            empathy_smiley_free (smiley);
        }
        g_slist_free (smileys);

        ret = g_string_free (string, FALSE);
    }

    /* Add <a href></a> arround links */
    uri_regex = empathy_uri_regex_dup_singleton ();
    match = g_regex_match (uri_regex, cur, 0, &match_info);
    if (match) {
        gint last = 0;
        gint s = 0, e = 0;

        string = g_string_sized_new (strlen (ret));
        do {
            g_match_info_fetch_pos (match_info, 0, &s, &e);

            if (s > last) {
                /* Append the text between last link (or the
                 * start of the message) and this link */
                g_string_append_len (string, ret + last, s - last);
            }

            /* Append the link inside <a href=""></a> tag */
            g_string_append (string, "<a href=\"");
            g_string_append_len (string, ret + s, e - s);
            g_string_append (string, "\">");
            g_string_append_len (string, ret + s, e - s);
            g_string_append (string, "</a>");

            last = e;
        } while (g_match_info_next (match_info, NULL));

        if (e < strlen (ret)) {
            /* Append the text after the last link */
            g_string_append_len (string, ret + e, strlen (ret) - e);
        }

        g_free (ret);
        ret = g_string_free (string, FALSE);
    }
    g_match_info_free (match_info);
    g_regex_unref (uri_regex);

    /* Replace \n by <br/> */
    string = NULL;
    prev = 0;
    for (i = 0; ret[i] != '\0'; i++) {
        if (ret[i] == '\n') {
            if (!string ) {
                string = g_string_sized_new (strlen (ret));
            }
            g_string_append_len (string, ret + prev, i - prev);
            g_string_append (string, "<br/>");
            prev = i + 1;
        }
    }
    if (string) {
        g_string_append (string, ret + prev);
        g_free (ret);
        ret = g_string_free (string, FALSE);
    }

    return ret;
}

static void
escape_and_append_len (GString *string, const gchar *str, gint len)
{
    while (*str != '\0' && len != 0) {
        switch (*str) {
        case '\\':
            /* \ becomes \\ */
            g_string_append (string, "\\\\");   
            break;
        case '\"':
            /* " becomes \" */
            g_string_append (string, "\\\"");
            break;
        case '\n':
            /* Remove end of lines */
            break;
        default:
            g_string_append_c (string, *str);
        }

        str++;
        len--;
    }
}

static gboolean
theme_adium_match (const gchar **str, const gchar *match)
{
    gint len;

    len = strlen (match);
    if (strncmp (*str, match, len) == 0) {
        *str += len - 1;
        return TRUE;
    }

    return FALSE;
}

static void
theme_adium_append_html (EmpathyThemeAdium *theme,
             const gchar       *func,
             const gchar       *html, gsize len,
                 const gchar       *message,
                 const gchar       *avatar_filename,
                 const gchar       *name,
                 time_t             timestamp)
{
    GString     *string;
    const gchar *cur = NULL;
    gchar       *script;

    /* Make some search-and-replace in the html code */
    string = g_string_sized_new (len + strlen (message));
    g_string_append_printf (string, "%s(\"", func);
    for (cur = html; *cur != '\0'; cur++) {
        const gchar *replace = NULL;
        gchar       *dup_replace = NULL;

        if (theme_adium_match (&cur, "%message%")) {
            replace = message;
        } else if (theme_adium_match (&cur, "%userIconPath%")) {
            replace = avatar_filename;
        } else if (theme_adium_match (&cur, "%sender%")) {
            replace = name;
        } else if (theme_adium_match (&cur, "%time")) {
            gchar *format = NULL;
            gchar *end;

            /* Extract the time format if provided. */
            if (*cur == '{') {
                end = strstr (cur + 1, "}%");
                if (!end) {
                    /* Invalid string */
                    continue;
                }
                cur++;
                format = g_strndup (cur, end - cur);
                cur = end;
            } else {
                cur++;
            }

            dup_replace = empathy_time_to_string_local (timestamp,
                format ? format : EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
            replace = dup_replace;
            g_free (format);
        } else {
            escape_and_append_len (string, cur, 1);
            continue;
        }

        /* Here we have a replacement to make */
        escape_and_append_len (string, replace, -1);
        g_free (dup_replace);
    }
    g_string_append (string, "\")");

    script = g_string_free (string, FALSE);
    webkit_web_view_execute_script (WEBKIT_WEB_VIEW (theme), script);
    g_free (script);
}

static void
theme_adium_append_message (EmpathyChatView *view,
                EmpathyMessage  *msg)
{
    EmpathyThemeAdium     *theme = EMPATHY_THEME_ADIUM (view);
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    EmpathyContact        *sender;
    gchar                 *dup_body = NULL;
    const gchar           *body;
    const gchar           *name;
    EmpathyAvatar         *avatar;
    const gchar           *avatar_filename = NULL;
    time_t                 timestamp;
    gchar                 *html = NULL;
    gsize                  len = 0;
    const gchar           *func;

    if (!priv->page_loaded) {
        priv->message_queue = g_list_prepend (priv->message_queue,
                              g_object_ref (msg));
        return;
    }

    /* Get information */
    sender = empathy_message_get_sender (msg);
    timestamp = empathy_message_get_timestamp (msg);
    body = empathy_message_get_body (msg);
    dup_body = theme_adium_parse_body (theme, body);
    if (dup_body) {
        body = dup_body;
    }
    name = empathy_contact_get_name (sender);
    avatar = empathy_contact_get_avatar (sender);
    if (avatar) {
        avatar_filename = avatar->filename;
    }
    if (!avatar_filename) {
        if (!priv->default_avatar_filename) {
            priv->default_avatar_filename =
                empathy_filename_from_icon_name ("stock_person",
                                 GTK_ICON_SIZE_DIALOG);
        }
        avatar_filename = priv->default_avatar_filename;
    }

    /* FIXME: What if the message is an action "/me foo"? */
    /* Get the right html/func to add the message */
    if (priv->last_contact &&
        empathy_contact_equal (priv->last_contact, sender)) {
        func = "appendNextMessage";
        if (empathy_contact_is_user (sender)) {
            html = priv->out_nextcontent_html;
            len = priv->out_nextcontent_len;
        }
        if (!html) {
            html = priv->in_nextcontent_html;
            len = priv->in_nextcontent_len;
        }
    }
    if (!html) {
        func = "appendMessage";
        if (empathy_contact_is_user (sender)) {
            html = priv->out_content_html;
            len = priv->out_content_len;
        }
        if (!html) {
            html = priv->in_content_html;
            len = priv->in_content_len;
        }
    }

    theme_adium_append_html (theme, func, html, len, body, avatar_filename,
                 name, timestamp);

    /* Keep the sender of the last displayed message */
    if (priv->last_contact) {
        g_object_unref (priv->last_contact);
    }
    priv->last_contact = g_object_ref (sender);

    g_free (dup_body);
}

static void
theme_adium_append_event (EmpathyChatView *view,
              const gchar     *str)
{
    EmpathyThemeAdium     *theme = EMPATHY_THEME_ADIUM (view);
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);

    if (priv->status_html) {
        theme_adium_append_html (theme, "appendMessage",
                     priv->status_html, priv->status_len,
                     str, NULL, NULL,
                     empathy_time_get_current ());
    }

    /* There is no last contact */
    if (priv->last_contact) {
        g_object_unref (priv->last_contact);
        priv->last_contact = NULL;
    }
}

static void
theme_adium_scroll (EmpathyChatView *view,
            gboolean         allow_scrolling)
{
    /* FIXME: Is it possible? I guess we need a js function, but I don't 
     * see any... */
}

static void
theme_adium_scroll_down (EmpathyChatView *view)
{
    webkit_web_view_execute_script (WEBKIT_WEB_VIEW (view), "scrollToBottom()");
}

static gboolean
theme_adium_get_has_selection (EmpathyChatView *view)
{
    return webkit_web_view_has_selection (WEBKIT_WEB_VIEW (view));
}

static void
theme_adium_clear (EmpathyChatView *view)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (view);

    priv->page_loaded = FALSE;
    webkit_web_view_load_html_string (WEBKIT_WEB_VIEW (view),
                      priv->template_html, priv->basedir);
}

static gboolean
theme_adium_find_previous (EmpathyChatView *view,
               const gchar     *search_criteria,
               gboolean         new_search)
{
    return webkit_web_view_search_text (WEBKIT_WEB_VIEW (view),
                        search_criteria, FALSE,
                        FALSE, TRUE);
}

static gboolean
theme_adium_find_next (EmpathyChatView *view,
               const gchar     *search_criteria,
               gboolean         new_search)
{
    return webkit_web_view_search_text (WEBKIT_WEB_VIEW (view),
                        search_criteria, FALSE,
                        TRUE, TRUE);
}

static void
theme_adium_find_abilities (EmpathyChatView *view,
                const gchar    *search_criteria,
                gboolean       *can_do_previous,
                gboolean       *can_do_next)
{
    /* FIXME: Does webkit provide an API for that? We have wrap=true in
     * find_next and find_previous to work around this problem. */
    if (can_do_previous)
        *can_do_previous = TRUE;
    if (can_do_next)
        *can_do_next = TRUE;
}

static void
theme_adium_highlight (EmpathyChatView *view,
               const gchar     *text)
{
    webkit_web_view_unmark_text_matches (WEBKIT_WEB_VIEW (view));
    webkit_web_view_mark_text_matches (WEBKIT_WEB_VIEW (view),
                       text, FALSE, 0);
    webkit_web_view_set_highlight_text_matches (WEBKIT_WEB_VIEW (view),
                            TRUE);
}

static void
theme_adium_copy_clipboard (EmpathyChatView *view)
{
    webkit_web_view_copy_clipboard (WEBKIT_WEB_VIEW (view));
}

static void
theme_adium_iface_init (EmpathyChatViewIface *iface)
{
    iface->append_message = theme_adium_append_message;
    iface->append_event = theme_adium_append_event;
    iface->scroll = theme_adium_scroll;
    iface->scroll_down = theme_adium_scroll_down;
    iface->get_has_selection = theme_adium_get_has_selection;
    iface->clear = theme_adium_clear;
    iface->find_previous = theme_adium_find_previous;
    iface->find_next = theme_adium_find_next;
    iface->find_abilities = theme_adium_find_abilities;
    iface->highlight = theme_adium_highlight;
    iface->copy_clipboard = theme_adium_copy_clipboard;
}

static void
theme_adium_load_finished_cb (WebKitWebView  *view,
                  WebKitWebFrame *frame,
                  gpointer        user_data)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (view);
    EmpathyChatView       *chat_view = EMPATHY_CHAT_VIEW (view);

    DEBUG ("Page loaded");
    priv->page_loaded = TRUE;

    /* Display queued messages */
    priv->message_queue = g_list_reverse (priv->message_queue);
    while (priv->message_queue) {
        EmpathyMessage *message = priv->message_queue->data;

        theme_adium_append_message (chat_view, message);
        priv->message_queue = g_list_remove (priv->message_queue, message);
        g_object_unref (message);
    }
}

static void
theme_adium_finalize (GObject *object)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (object);

    g_free (priv->basedir);
    g_free (priv->template_html);
    g_free (priv->in_content_html);
    g_free (priv->in_nextcontent_html);
    g_free (priv->out_content_html);
    g_free (priv->out_nextcontent_html);
    g_free (priv->default_avatar_filename);
    g_free (priv->path);
    g_object_unref (priv->smiley_manager);

    if (priv->last_contact) {
        g_object_unref (priv->last_contact);
    }

    G_OBJECT_CLASS (empathy_theme_adium_parent_class)->finalize (object);
}

static void
theme_adium_constructed (GObject *object)
{
    theme_adium_load (EMPATHY_THEME_ADIUM (object));
}

static void
theme_adium_get_property (GObject    *object,
              guint       param_id,
              GValue     *value,
              GParamSpec *pspec)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_PATH:
        g_value_set_string (value, priv->path);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
theme_adium_set_property (GObject      *object,
              guint         param_id,
              const GValue *value,
              GParamSpec   *pspec)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_PATH:
        g_free (priv->path);
        priv->path = g_value_dup_string (value);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
empathy_theme_adium_class_init (EmpathyThemeAdiumClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    
    object_class->finalize = theme_adium_finalize;
    object_class->constructed = theme_adium_constructed;
    object_class->get_property = theme_adium_get_property;
    object_class->set_property = theme_adium_set_property;

    g_object_class_install_property (object_class,
                     PROP_PATH,
                     g_param_spec_string ("path",
                                  "The theme path",
                                  "Path to the adium theme",
                                  g_get_home_dir (),
                                  G_PARAM_CONSTRUCT_ONLY |
                                  G_PARAM_READWRITE));


    g_type_class_add_private (object_class, sizeof (EmpathyThemeAdiumPriv));
}

static void
empathy_theme_adium_init (EmpathyThemeAdium *theme)
{
    EmpathyThemeAdiumPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (theme,
        EMPATHY_TYPE_THEME_ADIUM, EmpathyThemeAdiumPriv);

    theme->priv = priv; 

    priv->smiley_manager = empathy_smiley_manager_dup_singleton ();

    g_signal_connect (theme, "load-finished",
              G_CALLBACK (theme_adium_load_finished_cb),
              NULL);
    g_signal_connect (theme, "navigation-requested",
              G_CALLBACK (theme_adium_navigation_requested_cb),
              NULL);
    g_signal_connect (theme, "populate-popup",
              G_CALLBACK (theme_adium_populate_popup_cb),
              NULL);
}

EmpathyThemeAdium *
empathy_theme_adium_new (const gchar *path)
{
    g_return_val_if_fail (empathy_theme_adium_is_valid (path), NULL);

    return g_object_new (EMPATHY_TYPE_THEME_ADIUM,
                 "path", path,
                 NULL);
}

gboolean
empathy_theme_adium_is_valid (const gchar *path)
{
    gboolean ret;
    gchar   *file;

    /* We ship a default Template.html as fallback if there is any problem
     * with the one inside the theme. The only other required file is
     * Content.html for incoming messages (outgoing fallback to use
     * incoming). */
    file = g_build_filename (path, "Contents", "Resources", "Incoming",
                 "Content.html", NULL);
    ret = g_file_test (file, G_FILE_TEST_EXISTS);
    g_free (file);

    return ret;
}