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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2008-2009 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/webkit.h>
#include <telepathy-glib/dbus.h>
#include <telepathy-glib/util.h>

#include <pango/pango.h>
#include <gdk/gdk.h>

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

#include "empathy-theme-adium.h"
#include "empathy-smiley-manager.h"
#include "empathy-ui-utils.h"
#include "empathy-plist.h"
#include "empathy-string-parser.h"
#include "empathy-images.h"

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

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

#define BORING_DPI_DEFAULT 96

/* "Join" consecutive messages with timestamps within five minutes */
#define MESSAGE_JOIN_PERIOD 5*60

typedef struct {
    EmpathyAdiumData     *data;
    EmpathySmileyManager *smiley_manager;
    EmpathyContact       *last_contact;
    time_t                last_timestamp;
    gboolean              last_is_backlog;
    gboolean              page_loaded;
    GList                *message_queue;
    GtkWidget            *inspector_window;
    GSettings            *gsettings_chat;
} EmpathyThemeAdiumPriv;

struct _EmpathyAdiumData {
    gint  ref_count;
    gchar *path;
    gchar *basedir;
    gchar *default_avatar_filename;
    gchar *default_incoming_avatar_filename;
    gchar *default_outgoing_avatar_filename;
    gchar *template_html;
    gchar *in_content_html;
    gsize  in_content_len;
    gchar *in_context_html;
    gsize  in_context_len;
    gchar *in_nextcontent_html;
    gsize  in_nextcontent_len;
    gchar *in_nextcontext_html;
    gsize  in_nextcontext_len;
    gchar *out_content_html;
    gsize  out_content_len;
    gchar *out_context_html;
    gsize  out_context_len;
    gchar *out_nextcontent_html;
    gsize  out_nextcontent_len;
    gchar *out_nextcontext_html;
    gsize  out_nextcontext_len;
    gchar *status_html;
    gsize  status_len;
    GHashTable *info;
};

static void theme_adium_iface_init (EmpathyChatViewIface *iface);

enum {
    PROP_0,
    PROP_ADIUM_DATA,
};

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_update_enable_webkit_developer_tools (EmpathyThemeAdium *theme)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    WebKitWebView  *web_view = WEBKIT_WEB_VIEW (theme);
    gboolean        enable_webkit_developer_tools;

    enable_webkit_developer_tools = g_settings_get_boolean (
            priv->gsettings_chat,
            EMPATHY_PREFS_CHAT_WEBKIT_DEVELOPER_TOOLS);

    g_object_set (G_OBJECT (webkit_web_view_get_settings (web_view)),
              "enable-developer-extras",
              enable_webkit_developer_tools,
              NULL);
}

static void
theme_adium_notify_enable_webkit_developer_tools_cb (GSettings   *gsettings,
                             const gchar *key,
                             gpointer     user_data)
{
    EmpathyThemeAdium  *theme = user_data;

    theme_adium_update_enable_webkit_developer_tools (theme);
}

static gboolean
theme_adium_navigation_policy_decision_requested_cb (WebKitWebView             *view,
                             WebKitWebFrame            *web_frame,
                             WebKitNetworkRequest      *request,
                             WebKitWebNavigationAction *action,
                             WebKitWebPolicyDecision   *decision,
                             gpointer                   data)
{
    const gchar *uri;

    /* Only call url_show on clicks */
    if (webkit_web_navigation_action_get_reason (action) !=
        WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
        webkit_web_policy_decision_use (decision);
        return TRUE;
    }

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

    webkit_web_policy_decision_ignore (decision);
    return TRUE;
}

static void
theme_adium_copy_address_cb (GtkMenuItem *menuitem,
                 gpointer     user_data)
{
    WebKitHitTestResult   *hit_test_result = WEBKIT_HIT_TEST_RESULT (user_data);
    gchar                 *uri;
    GtkClipboard          *clipboard;

    g_object_get (G_OBJECT (hit_test_result), "link-uri", &uri, NULL);

    clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
    gtk_clipboard_set_text (clipboard, uri, -1);

    clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
    gtk_clipboard_set_text (clipboard, uri, -1);

    g_free (uri);
}

static void
theme_adium_open_address_cb (GtkMenuItem *menuitem,
                 gpointer     user_data)
{
    WebKitHitTestResult   *hit_test_result = WEBKIT_HIT_TEST_RESULT (user_data);
    gchar                 *uri;

    g_object_get (G_OBJECT (hit_test_result), "link-uri", &uri, NULL);

    empathy_url_show (GTK_WIDGET (menuitem), uri);

    g_free (uri);
}

static void
theme_adium_match_newline (const gchar *text,
               gssize len,
               EmpathyStringReplace replace_func,
               EmpathyStringParser *sub_parsers,
               gpointer user_data)
{
    GString *string = user_data;
    gint i;
    gint prev = 0;

    if (len < 0) {
        len = G_MAXSSIZE;
    }

    /* Replace \n by <br/> */
    for (i = 0; i < len && text[i] != '\0'; i++) {
        if (text[i] == '\n') {
            empathy_string_parser_substr (text + prev,
                              i - prev, sub_parsers,
                              user_data);
            g_string_append (string, "<br/>");
            prev = i + 1;
        }
    }
    empathy_string_parser_substr (text + prev, i - prev,
                      sub_parsers, user_data);
}

static void
theme_adium_replace_smiley (const gchar *text,
                gssize len,
                gpointer match_data,
                gpointer user_data)
{
    EmpathySmileyHit *hit = match_data;
    GString *string = user_data;

    /* Replace smiley by a <img/> tag */
    g_string_append_printf (string,
                "<img src=\"%s\" alt=\"%.*s\" title=\"%.*s\"/>",
                hit->path, (int)len, text, (int)len, text);
}

static EmpathyStringParser string_parsers[] = {
    {empathy_string_match_link, empathy_string_replace_link},
    {theme_adium_match_newline, NULL},
    {empathy_string_match_all, empathy_string_replace_escaped},
    {NULL, NULL}
};

static EmpathyStringParser string_parsers_with_smiley[] = {
    {empathy_string_match_link, empathy_string_replace_link},
    {empathy_string_match_smiley, theme_adium_replace_smiley},
    {theme_adium_match_newline, NULL},
    {empathy_string_match_all, empathy_string_replace_escaped},
    {NULL, NULL}
};

static gchar *
theme_adium_parse_body (EmpathyThemeAdium *self,
    const gchar *text)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (self);
    EmpathyStringParser *parsers;
    GString *string;

    /* Check if we have to parse smileys */
    if (g_settings_get_boolean (priv->gsettings_chat,
      EMPATHY_PREFS_CHAT_SHOW_SMILEYS))
        parsers = string_parsers_with_smiley;
    else
        parsers = string_parsers;

    /* Parse text and construct string with links and smileys replaced
     * by html tags. Also escape text to make sure html code is
     * displayed verbatim. */
    string = g_string_sized_new (strlen (text));
    empathy_string_parser_substr (text, -1, parsers, string);

    /* Wrap body in order to make tabs and multiple spaces displayed
     * properly. See bug #625745. */
    g_string_prepend (string, "<div style=\"display: inline; "
                           "white-space: pre-wrap\"'>");
    g_string_append (string, "</div>");

    return g_string_free (string, FALSE);
}

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,
                 const gchar       *contact_id,
                 const gchar       *service_name,
                 const gchar       *message_classes,
                 time_t             timestamp,
                 gboolean           is_backlog)
{
    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, "%messageClasses%")) {
            replace = message_classes;
        } 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, "%senderScreenName%")) {
            replace = contact_id;
        } else if (theme_adium_match (&cur, "%senderDisplayName%")) {
            /* %senderDisplayName% -
             * "The serverside (remotely set) name of the sender,
             *  such as an MSN display name."
             *
             * We don't have access to that yet so we use local
             * alias instead.*/
            replace = name;
        } else if (theme_adium_match (&cur, "%service%")) {
            replace = service_name;
        } else if (theme_adium_match (&cur, "%shortTime%")) {
            dup_replace = empathy_time_to_string_local (timestamp,
                EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
            replace = dup_replace;
        } else if (theme_adium_match (&cur, "%time")) {
            gchar *format = NULL;
            gchar *end;
            /* Time can be in 2 formats:
             * %time% or %time{strftime format}%
             * Extract the time format if provided. */
            if (cur[1] == '{') {
                cur += 2;
                end = strstr (cur, "}%");
                if (!end) {
                    /* Invalid string */
                    continue;
                }
                format = g_strndup (cur, end - cur);
                cur = end + 1;
            } else {
                cur++;
            }

            if (is_backlog) {
                dup_replace = empathy_time_to_string_local (timestamp,
                    format ? format : EMPATHY_TIME_DATE_FORMAT_DISPLAY_SHORT);
            } else {
                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_event_escaped (EmpathyChatView *view,
                  const gchar     *escaped)
{
    EmpathyThemeAdium     *theme = EMPATHY_THEME_ADIUM (view);
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);

    if (priv->data->status_html) {
        theme_adium_append_html (theme, "appendMessage",
                     priv->data->status_html,
                     priv->data->status_len,
                     escaped, NULL, NULL, NULL, NULL,
                     "event", empathy_time_get_current (), FALSE);
    }

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

static void
theme_adium_append_message (EmpathyChatView *view,
                EmpathyMessage  *msg)
{
    EmpathyThemeAdium     *theme = EMPATHY_THEME_ADIUM (view);
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    EmpathyContact        *sender;
    TpAccount             *account;
    gchar                 *body_escaped;
    const gchar           *body;
    const gchar           *name;
    const gchar           *contact_id;
    EmpathyAvatar         *avatar;
    const gchar           *avatar_filename = NULL;
    time_t                 timestamp;
    gchar                 *html = NULL;
    gsize                  len = 0;
    const gchar           *func;
    const gchar           *service_name;
    GString               *message_classes = NULL;
    gboolean               is_backlog;
    gboolean               consecutive;

    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);
    account = empathy_contact_get_account (sender);
    service_name = empathy_protocol_name_to_display_name
        (tp_account_get_protocol (account));
    if (service_name == NULL)
        service_name = tp_account_get_protocol (account);
    timestamp = empathy_message_get_timestamp (msg);
    body = empathy_message_get_body (msg);
    body_escaped = theme_adium_parse_body (theme, body);
    name = empathy_contact_get_alias (sender);
    contact_id = empathy_contact_get_id (sender);

    /* If this is a /me, append an event */
    if (empathy_message_get_tptype (msg) == TP_CHANNEL_TEXT_MESSAGE_TYPE_ACTION) {
        gchar *str;

        str = g_strdup_printf ("%s %s", name, body_escaped);
        theme_adium_append_event_escaped (view, str);

        g_free (str);
        g_free (body_escaped);
        return;
    }

    /* Get the avatar filename, or a fallback */
    avatar = empathy_contact_get_avatar (sender);
    if (avatar) {
        avatar_filename = avatar->filename;
    }
    if (!avatar_filename) {
        if (empathy_contact_is_user (sender)) {
            avatar_filename = priv->data->default_outgoing_avatar_filename;
        } else {
            avatar_filename = priv->data->default_incoming_avatar_filename;
        }
        if (!avatar_filename) {
            if (!priv->data->default_avatar_filename) {
                priv->data->default_avatar_filename =
                    empathy_filename_from_icon_name (EMPATHY_IMAGE_AVATAR_DEFAULT,
                                     GTK_ICON_SIZE_DIALOG);
            }
            avatar_filename = priv->data->default_avatar_filename;
        }
    }

    /* We want to join this message with the last one if
     * - senders are the same contact,
     * - last message was recieved recently,
     * - last message and this message both are/aren't backlog, and
     * - DisableCombineConsecutive is not set in theme's settings */
    is_backlog = empathy_message_is_backlog (msg);
    consecutive = empathy_contact_equal (priv->last_contact, sender) &&
        (timestamp - priv->last_timestamp < MESSAGE_JOIN_PERIOD) &&
        (is_backlog == priv->last_is_backlog) &&
        !tp_asv_get_boolean (priv->data->info,
                     "DisableCombineConsecutive", NULL);

    /* Define message classes */
    message_classes = g_string_new ("message");
    if (is_backlog) {
        g_string_append (message_classes, " history");
    }
    if (consecutive) {
        g_string_append (message_classes, " consecutive");
    }
    if (empathy_contact_is_user (sender)) {
        g_string_append (message_classes, " outgoing");
    } else {
        g_string_append (message_classes, " incoming");
    }

    /* Define javascript function to use */
    if (consecutive) {
        func = "appendNextMessage";
    } else {
        func = "appendMessage";
    }

    /* Outgoing */
    if (empathy_contact_is_user (sender)) {
        if (consecutive) {
            if (is_backlog) {
                html = priv->data->out_nextcontext_html;
                len = priv->data->out_nextcontext_len;
            }

            /* Not backlog, or fallback if NextContext.html
             * is missing */
            if (html == NULL) {
                html = priv->data->out_nextcontent_html;
                len = priv->data->out_nextcontent_len;
            }
        }

        /* Not consecutive, or fallback if NextContext.html and/or
         * NextContent.html are missing */
        if (html == NULL) {
            if (is_backlog) {
                html = priv->data->out_context_html;
                len = priv->data->out_context_len;
            }

            if (html == NULL) {
                html = priv->data->out_content_html;
                len = priv->data->out_content_len;
            }
        }
    }

    /* Incoming, or fallback if outgoing files are missing */
    if (html == NULL) {
        if (consecutive) {
            if (is_backlog) {
                html = priv->data->in_nextcontext_html;
                len = priv->data->in_nextcontext_len;
            }

            /* Note backlog, or fallback if NextContext.html
             * is missing */
            if (html == NULL) {
                html = priv->data->in_nextcontent_html;
                len = priv->data->in_nextcontent_len;
            }
        }

        /* Not consecutive, or fallback if NextContext.html and/or
         * NextContent.html are missing */
        if (html == NULL) {
            if (is_backlog) {
                html = priv->data->in_context_html;
                len = priv->data->in_context_len;
            }

            if (html == NULL) {
                html = priv->data->in_content_html;
                len = priv->data->in_content_len;
            }
        }
    }

    if (html != NULL) {
        theme_adium_append_html (theme, func, html, len, body_escaped,
                     avatar_filename, name, contact_id,
                     service_name, message_classes->str,
                     timestamp, is_backlog);
    } else {
        DEBUG ("Couldn't find HTML file for this message");
    }

    /* 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);
    priv->last_timestamp = timestamp;
    priv->last_is_backlog = is_backlog;

    g_free (body_escaped);
    g_string_free (message_classes, TRUE);
}

static void
theme_adium_append_event (EmpathyChatView *view,
              const gchar     *str)
{
    gchar *str_escaped;

    str_escaped = g_markup_escape_text (str, -1);
    theme_adium_append_event_escaped (view, str_escaped);
    g_free (str_escaped);
}

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);
    gchar *basedir_uri;

    priv->page_loaded = FALSE;
    basedir_uri = g_strconcat ("file://", priv->data->basedir, NULL);
    webkit_web_view_load_html_string (WEBKIT_WEB_VIEW (view),
                      priv->data->template_html,
                      basedir_uri);
    g_free (basedir_uri);

    /* Clear last contact to avoid trying to add a 'joined'
     * message when we don't have an insertion point. */
    if (priv->last_contact) {
        g_object_unref (priv->last_contact);
        priv->last_contact = NULL;
    }
}

static gboolean
theme_adium_find_previous (EmpathyChatView *view,
               const gchar     *search_criteria,
               gboolean         new_search,
               gboolean         match_case)
{
    /* FIXME: Doesn't respect new_search */
    return webkit_web_view_search_text (WEBKIT_WEB_VIEW (view),
                        search_criteria, match_case,
                        FALSE, TRUE);
}

static gboolean
theme_adium_find_next (EmpathyChatView *view,
               const gchar     *search_criteria,
               gboolean         new_search,
               gboolean         match_case)
{
    /* FIXME: Doesn't respect new_search */
    return webkit_web_view_search_text (WEBKIT_WEB_VIEW (view),
                        search_criteria, match_case,
                        TRUE, TRUE);
}

static void
theme_adium_find_abilities (EmpathyChatView *view,
                const gchar    *search_criteria,
                            gboolean        match_case,
                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,
               gboolean         match_case)
{
    webkit_web_view_unmark_text_matches (WEBKIT_WEB_VIEW (view));
    webkit_web_view_mark_text_matches (WEBKIT_WEB_VIEW (view),
                       text, match_case, 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_context_menu_selection_done_cb (GtkMenuShell *menu, gpointer user_data)
{
    WebKitHitTestResult *hit_test_result = WEBKIT_HIT_TEST_RESULT (user_data);

    g_object_unref (hit_test_result);
}

static void
theme_adium_context_menu_for_event (EmpathyThemeAdium *theme, GdkEventButton *event)
{
    WebKitWebView              *view = WEBKIT_WEB_VIEW (theme);
    WebKitHitTestResult        *hit_test_result;
    WebKitHitTestResultContext  context;
    GtkWidget                  *menu;
    GtkWidget                  *item;

    hit_test_result = webkit_web_view_get_hit_test_result (view, event);
    g_object_get (G_OBJECT (hit_test_result), "context", &context, NULL);

    /* The menu */
    menu = empathy_context_menu_new (GTK_WIDGET (view));

    /* 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);

    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);

        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);

    item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLEAR, NULL);
    gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);

    g_signal_connect_swapped (item, "activate",
                  G_CALLBACK (empathy_chat_view_clear),
                  view);

    /* We will only add the following menu items if we are
     * right-clicking a link */
    if (context & WEBKIT_HIT_TEST_RESULT_CONTEXT_LINK) {
        /* Separator */
        item = gtk_separator_menu_item_new ();
        gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);

        /* Copy Link Address menu item */
        item = gtk_menu_item_new_with_mnemonic (_("_Copy Link Address"));
        g_signal_connect (item, "activate",
                  G_CALLBACK (theme_adium_copy_address_cb),
                  hit_test_result);
        gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);

        /* Open Link menu item */
        item = gtk_menu_item_new_with_mnemonic (_("_Open Link"));
        g_signal_connect (item, "activate",
                  G_CALLBACK (theme_adium_open_address_cb),
                  hit_test_result);
        gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
    }

    g_signal_connect (GTK_MENU_SHELL (menu), "selection-done",
              G_CALLBACK (theme_adium_context_menu_selection_done_cb),
              hit_test_result);

    /* Display the menu */
    gtk_widget_show_all (menu);
    gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL,
            event->button, event->time);
}

static gboolean
theme_adium_button_press_event (GtkWidget *widget, GdkEventButton *event)
{
    if (event->button == 3) {
        gboolean developer_tools_enabled;

        g_object_get (G_OBJECT (webkit_web_view_get_settings (WEBKIT_WEB_VIEW (widget))),
                  "enable-developer-extras", &developer_tools_enabled, NULL);

        /* We currently have no way to add an inspector menu
         * item ourselves, so we disable our customized menu
         * if the developer extras are enabled. */
        if (!developer_tools_enabled) {
            theme_adium_context_menu_for_event (EMPATHY_THEME_ADIUM (widget), event);
            return TRUE;
        }
    }

    return GTK_WIDGET_CLASS (empathy_theme_adium_parent_class)->button_press_event (widget, event);
}

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);

    empathy_adium_data_unref (priv->data);
    g_object_unref (priv->gsettings_chat);

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

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

    if (priv->smiley_manager) {
        g_object_unref (priv->smiley_manager);
        priv->smiley_manager = NULL;
    }

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

    if (priv->inspector_window) {
        gtk_widget_destroy (priv->inspector_window);
        priv->inspector_window = NULL;
    }

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

static gboolean
theme_adium_inspector_show_window_cb (WebKitWebInspector *inspector,
                      EmpathyThemeAdium  *theme)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);

    if (priv->inspector_window) {
        gtk_widget_show_all (priv->inspector_window);
    }

    return TRUE;
}

static gboolean
theme_adium_inspector_close_window_cb (WebKitWebInspector *inspector,
                       EmpathyThemeAdium  *theme)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);

    if (priv->inspector_window) {
        gtk_widget_hide (priv->inspector_window);
    }

    return TRUE;
}

static WebKitWebView *
theme_adium_inspect_web_view_cb (WebKitWebInspector *inspector,
                 WebKitWebView      *web_view,
                 EmpathyThemeAdium  *theme)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (theme);
    GtkWidget             *scrolled_window;
    GtkWidget             *inspector_web_view;

    if (!priv->inspector_window) {
        /* Create main window */
        priv->inspector_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
        gtk_window_set_default_size (GTK_WINDOW (priv->inspector_window),
                         800, 600);
        g_signal_connect (priv->inspector_window, "delete-event",
                  G_CALLBACK (gtk_widget_hide_on_delete), NULL);

        /* Pack a scrolled window */
        scrolled_window = gtk_scrolled_window_new (NULL, NULL);
        gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                        GTK_POLICY_AUTOMATIC,
                        GTK_POLICY_AUTOMATIC);
        gtk_container_add (GTK_CONTAINER (priv->inspector_window),
                   scrolled_window);
        gtk_widget_show  (scrolled_window);

        /* Pack a webview in the scrolled window. That webview will be
         * used to render the inspector tool.  */
        inspector_web_view = webkit_web_view_new ();
        gtk_container_add (GTK_CONTAINER (scrolled_window),
                   inspector_web_view);
        gtk_widget_show (scrolled_window);

        return WEBKIT_WEB_VIEW (inspector_web_view);
    }

    return NULL;
}

static PangoFontDescription *
theme_adium_get_default_font (void)
{
    GSettings *gsettings;
    PangoFontDescription *pango_fd;
    gchar *font_family;

    gsettings = g_settings_new (EMPATHY_PREFS_DESKTOP_INTERFACE_SCHEMA);

    font_family = g_settings_get_string (gsettings,
             EMPATHY_PREFS_DESKTOP_INTERFACE_DOCUMENT_FONT_NAME);

    if (font_family == NULL)
        return NULL;

    pango_fd = pango_font_description_from_string (font_family);
    g_free (font_family);
    g_object_unref (gsettings);
    return pango_fd;
}

static void
theme_adium_set_webkit_font (WebKitWebSettings *w_settings,
                 const gchar *name,
                 gint size)
{
    g_object_set (w_settings, "default-font-family", name, NULL);
    g_object_set (w_settings, "default-font-size", size, NULL);
}

static void
theme_adium_set_default_font (WebKitWebSettings *w_settings)
{
    PangoFontDescription *default_font_desc;
    GdkScreen *current_screen;
    gdouble dpi = 0;
    gint pango_font_size = 0;

    default_font_desc = theme_adium_get_default_font ();
    if (default_font_desc == NULL)
        return ;
    pango_font_size = pango_font_description_get_size (default_font_desc)
        / PANGO_SCALE ;
    if (pango_font_description_get_size_is_absolute (default_font_desc)) {
        current_screen = gdk_screen_get_default ();
        if (current_screen != NULL) {
            dpi = gdk_screen_get_resolution (current_screen);
        } else {
            dpi = BORING_DPI_DEFAULT;
        }
        pango_font_size = (gint) (pango_font_size / (dpi / 72));
    }
    theme_adium_set_webkit_font (w_settings,
        pango_font_description_get_family (default_font_desc),
        pango_font_size);
    pango_font_description_free (default_font_desc);
}

static void
theme_adium_constructed (GObject *object)
{
    EmpathyThemeAdiumPriv *priv = GET_PRIV (object);
    gchar                 *basedir_uri;
    const gchar           *font_family = NULL;
    gint                   font_size = 0;
    WebKitWebView         *webkit_view = WEBKIT_WEB_VIEW (object);
    WebKitWebSettings     *webkit_settings;
    WebKitWebInspector    *webkit_inspector;

    /* Set default settings */
    font_family = tp_asv_get_string (priv->data->info, "DefaultFontFamily");
    font_size = tp_asv_get_int32 (priv->data->info, "DefaultFontSize", NULL);
    webkit_settings = webkit_web_view_get_settings (webkit_view);

    if (font_family && font_size) {
        theme_adium_set_webkit_font (webkit_settings, font_family, font_size);
    } else {
        theme_adium_set_default_font (webkit_settings);
    }

    /* Setup webkit inspector */
    webkit_inspector = webkit_web_view_get_inspector (webkit_view);
    g_signal_connect (webkit_inspector, "inspect-web-view",
              G_CALLBACK (theme_adium_inspect_web_view_cb),
              object);
    g_signal_connect (webkit_inspector, "show-window",
              G_CALLBACK (theme_adium_inspector_show_window_cb),
              object);
    g_signal_connect (webkit_inspector, "close-window",
              G_CALLBACK (theme_adium_inspector_close_window_cb),
              object);

    /* Load template */
    basedir_uri = g_strconcat ("file://", priv->data->basedir, NULL);
    webkit_web_view_load_html_string (WEBKIT_WEB_VIEW (object),
                      priv->data->template_html,
                      basedir_uri);
    g_free (basedir_uri);
}

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_ADIUM_DATA:
        g_value_set_boxed (value, priv->data);
        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_ADIUM_DATA:
        g_assert (priv->data == NULL);
        priv->data = g_value_dup_boxed (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);
    GtkWidgetClass* widget_class = GTK_WIDGET_CLASS (klass);

    object_class->finalize = theme_adium_finalize;
    object_class->dispose = theme_adium_dispose;
    object_class->constructed = theme_adium_constructed;
    object_class->get_property = theme_adium_get_property;
    object_class->set_property = theme_adium_set_property;

    widget_class->button_press_event = theme_adium_button_press_event;

    g_object_class_install_property (object_class,
                     PROP_ADIUM_DATA,
                     g_param_spec_boxed ("adium-data",
                                 "The theme data",
                                 "Data for the adium theme",
                                  EMPATHY_TYPE_ADIUM_DATA,
                                  G_PARAM_CONSTRUCT_ONLY |
                                  G_PARAM_READWRITE |
                                  G_PARAM_STATIC_STRINGS));

    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-policy-decision-requested",
              G_CALLBACK (theme_adium_navigation_policy_decision_requested_cb),
              NULL);

    priv->gsettings_chat = g_settings_new (EMPATHY_PREFS_CHAT_SCHEMA);
    g_signal_connect (priv->gsettings_chat,
        "changed::" EMPATHY_PREFS_CHAT_WEBKIT_DEVELOPER_TOOLS,
        G_CALLBACK (theme_adium_notify_enable_webkit_developer_tools_cb),
        theme);

    theme_adium_update_enable_webkit_developer_tools (theme);
}

EmpathyThemeAdium *
empathy_theme_adium_new (EmpathyAdiumData *data)
{
    g_return_val_if_fail (data != NULL, NULL);

    return g_object_new (EMPATHY_TYPE_THEME_ADIUM,
                 "adium-data", data,
                 NULL);
}

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

    /* The theme is not valid if there is no Info.plist */
    file = g_build_filename (path, "Contents", "Info.plist",
                 NULL);
    ret = g_file_test (file, G_FILE_TEST_EXISTS);
    g_free (file);

    if (ret == FALSE)
        return ret;

    /* 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;
}

GHashTable *
empathy_adium_info_new (const gchar *path)
{
    gchar *file;
    GValue *value;
    GHashTable *info = NULL;

    g_return_val_if_fail (empathy_adium_path_is_valid (path), NULL);

    file = g_build_filename (path, "Contents", "Info.plist", NULL);
    value = empathy_plist_parse_from_file (file);
    g_free (file);

    if (value == NULL)
        return NULL;

    info = g_value_dup_boxed (value);
    tp_g_value_slice_free (value);

    /* Insert the theme's path into the hash table,
     * keys have to be dupped */
    tp_asv_set_string (info, g_strdup ("path"), path);

    return info;
}

GType
empathy_adium_data_get_type (void)
{
  static GType type_id = 0;

  if (!type_id)
    {
      type_id = g_boxed_type_register_static ("EmpathyAdiumData",
          (GBoxedCopyFunc) empathy_adium_data_ref,
          (GBoxedFreeFunc) empathy_adium_data_unref);
    }

  return type_id;
}

EmpathyAdiumData  *
empathy_adium_data_new_with_info (const gchar *path, GHashTable *info)
{
    EmpathyAdiumData *data;
    gchar            *file;
    gchar            *template_html = NULL;
    gsize             template_len;
    gchar            *footer_html = NULL;
    gsize             footer_len;
    GString          *string;
    gchar           **strv = NULL;
    gchar            *css_path;
    guint             len = 0;
    guint             i = 0;

    g_return_val_if_fail (empathy_adium_path_is_valid (path), NULL);

    data = g_slice_new0 (EmpathyAdiumData);
    data->ref_count = 1;
    data->path = g_strdup (path);
    data->basedir = g_strconcat (path, G_DIR_SEPARATOR_S "Contents"
        G_DIR_SEPARATOR_S "Resources" G_DIR_SEPARATOR_S, NULL);
    data->info = g_hash_table_ref (info);

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

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

    file = g_build_filename (data->basedir, "Incoming", "Context.html", NULL);
    g_file_get_contents (file, &data->in_context_html, &data->in_context_len, NULL);
    g_free (file);

    file = g_build_filename (data->basedir, "Incoming", "NextContext.html", NULL);
    g_file_get_contents (file, &data->in_nextcontext_html, &data->in_nextcontext_len, NULL);
    g_free (file);

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

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

    file = g_build_filename (data->basedir, "Outgoing", "Context.html", NULL);
    g_file_get_contents (file, &data->out_context_html, &data->out_context_len, NULL);
    g_free (file);

    file = g_build_filename (data->basedir, "Outgoing", "NextContext.html", NULL);
    g_file_get_contents (file, &data->out_nextcontext_html, &data->out_nextcontext_len, NULL);
    g_free (file);

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

    file = g_build_filename (data->basedir, "Footer.html", NULL);
    g_file_get_contents (file, &footer_html, &footer_len, NULL);
    g_free (file);

    file = g_build_filename (data->basedir, "Incoming", "buddy_icon.png", NULL);
    if (g_file_test (file, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
        data->default_incoming_avatar_filename = file;
    } else {
        g_free (file);
    }

    file = g_build_filename (data->basedir, "Outgoing", "buddy_icon.png", NULL);
    if (g_file_test (file, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
        data->default_outgoing_avatar_filename = file;
    } else {
        g_free (file);
    }

    css_path = g_build_filename (data->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 (data->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, data->basedir);
    g_string_append (string, strv[i++]);
    if (len == 6) {
        const gchar *variant;

        /* We include main.css by default */
        g_string_append_printf (string, "@import url(\"%s\");", css_path);
        g_string_append (string, strv[i++]);
        variant = tp_asv_get_string (data->info, "DefaultVariant");
        if (variant) {
            g_string_append (string, "Variants/");
            g_string_append (string, variant);
            g_string_append (string, ".css");
        }
    } 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++]);
    /* FIXME: We should replace adium %macros% in footer */
    if (footer_html) {
        g_string_append (string, footer_html);
    }
    g_string_append (string, strv[i++]);
    data->template_html = g_string_free (string, FALSE);

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

    return data;
}

EmpathyAdiumData  *
empathy_adium_data_new (const gchar *path)
{
    EmpathyAdiumData *data;
    GHashTable *info;

    info = empathy_adium_info_new (path);
    data = empathy_adium_data_new_with_info (path, info);
    g_hash_table_unref (info);

    return data;
}

EmpathyAdiumData  *
empathy_adium_data_ref (EmpathyAdiumData *data)
{
    g_return_val_if_fail (data != NULL, NULL);

    g_atomic_int_inc (&data->ref_count);

    return data;
}

void
empathy_adium_data_unref (EmpathyAdiumData *data)
{
    g_return_if_fail (data != NULL);

    if (g_atomic_int_dec_and_test (&data->ref_count)) {
        g_free (data->path);
        g_free (data->basedir);
        g_free (data->template_html);
        g_free (data->in_content_html);
        g_free (data->in_nextcontent_html);
        g_free (data->in_context_html);
        g_free (data->in_nextcontext_html);
        g_free (data->out_content_html);
        g_free (data->out_nextcontent_html);
        g_free (data->out_context_html);
        g_free (data->out_nextcontext_html);
        g_free (data->default_avatar_filename);
        g_free (data->default_incoming_avatar_filename);
        g_free (data->default_outgoing_avatar_filename);
        g_free (data->status_html);
        g_hash_table_unref (data->info);
        g_slice_free (EmpathyAdiumData, data);
    }
}

GHashTable *
empathy_adium_data_get_info (EmpathyAdiumData *data)
{
    g_return_val_if_fail (data != NULL, NULL);

    return data->info;
}

const gchar *
empathy_adium_data_get_path (EmpathyAdiumData *data)
{
    g_return_val_if_fail (data != NULL, NULL);

    return data->path;
}