path: root/libempathy-gtk/empathy-log-window.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2006-2007 Imendio AB
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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 General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Authors: Martyn Russell <martyn@imendio.com>
 *          Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <string.h>
#include <stdlib.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <glade/glade.h>

#include <libempathy/empathy-log-manager.h>
#include <libempathy/empathy-chatroom-manager.h>
#include <libempathy/empathy-chatroom.h>
#include <libempathy/empathy-message.h>
#include <libempathy/empathy-debug.h>
#include <libempathy/empathy-utils.h>
#include <libempathy/empathy-time.h>

#include "empathy-log-window.h"
#include "empathy-account-chooser.h"
#include "empathy-chat-view.h"
#include "empathy-ui-utils.h"

#define DEBUG_DOMAIN "LogWindow"

typedef struct {
    GtkWidget         *window;

    GtkWidget         *notebook;

    GtkWidget         *entry_find;
    GtkWidget         *button_find;
    GtkWidget         *treeview_find;
    GtkWidget         *scrolledwindow_find;
    EmpathyChatView    *chatview_find;
    GtkWidget         *button_previous;
    GtkWidget         *button_next;

    GtkWidget         *vbox_chats;
    GtkWidget         *account_chooser_chats;
    GtkWidget         *entry_chats;
    GtkWidget         *calendar_chats;
    GtkWidget         *treeview_chats;
    GtkWidget         *scrolledwindow_chats;
    EmpathyChatView    *chatview_chats;

    gchar             *last_find;

    EmpathyLogManager *log_manager;
} EmpathyLogWindow;

static void     log_window_destroy_cb                      (GtkWidget        *widget,
                                EmpathyLogWindow *window);
static void     log_window_entry_find_changed_cb           (GtkWidget        *entry,
                                EmpathyLogWindow *window);
static void     log_window_find_changed_cb                 (GtkTreeSelection *selection,
                                EmpathyLogWindow *window);
static void     log_window_find_populate                   (EmpathyLogWindow *window,
                                const gchar      *search_criteria);
static void     log_window_find_setup                      (EmpathyLogWindow *window);
static void     log_window_button_find_clicked_cb          (GtkWidget        *widget,
                                EmpathyLogWindow *window);
static void     log_window_button_next_clicked_cb          (GtkWidget        *widget,
                                EmpathyLogWindow *window);
static void     log_window_button_previous_clicked_cb      (GtkWidget        *widget,
                                EmpathyLogWindow *window);
static void     log_window_chats_changed_cb                (GtkTreeSelection *selection,
                                EmpathyLogWindow *window);
static void     log_window_chats_populate                  (EmpathyLogWindow *window);
static void     log_window_chats_setup                     (EmpathyLogWindow *window);
static void     log_window_chats_accounts_changed_cb       (GtkWidget        *combobox,
                                EmpathyLogWindow *window);
static void     log_window_chats_set_selected              (EmpathyLogWindow *window,
                                McAccount        *account,
                                const gchar      *chat_id,
                                gboolean          is_chatroom);
static gboolean log_window_chats_get_selected              (EmpathyLogWindow *window,
                                McAccount       **account,
                                gchar           **chat_id,
                                gboolean         *is_chatroom);
static void     log_window_chats_get_messages              (EmpathyLogWindow *window,
                                const gchar      *date_to_show);
static void     log_window_calendar_chats_day_selected_cb  (GtkWidget        *calendar,
                                EmpathyLogWindow *window);
static void     log_window_calendar_chats_month_changed_cb (GtkWidget        *calendar,
                                EmpathyLogWindow *window);
static void     log_window_entry_chats_changed_cb          (GtkWidget        *entry,
                                EmpathyLogWindow *window);
static void     log_window_entry_chats_activate_cb         (GtkWidget        *entry,
                                EmpathyLogWindow *window);

enum {
    COL_FIND_ACCOUNT_ICON,
    COL_FIND_ACCOUNT_NAME,
    COL_FIND_ACCOUNT,
    COL_FIND_CHAT_NAME,
    COL_FIND_CHAT_ID,
    COL_FIND_IS_CHATROOM,
    COL_FIND_DATE,
    COL_FIND_DATE_READABLE,
    COL_FIND_COUNT
};

enum {
    COL_CHAT_ICON,
    COL_CHAT_NAME,
    COL_CHAT_ACCOUNT,
    COL_CHAT_ID,
    COL_CHAT_IS_CHATROOM,
    COL_CHAT_COUNT
};

GtkWidget *
empathy_log_window_show (McAccount   *account,
            const gchar *chat_id,
            gboolean     is_chatroom,
            GtkWindow   *parent)
{
    static EmpathyLogWindow *window = NULL;
    EmpathyAccountChooser   *account_chooser;
    GList                  *accounts;
    gint                    account_num;
    GladeXML               *glade;
    gchar                  *filename;

    if (window) {
        gtk_window_present (GTK_WINDOW (window->window));

        if (account && chat_id) {
            gtk_notebook_set_current_page (GTK_NOTEBOOK (window->notebook), 1);
            log_window_chats_set_selected (window, account,
                               chat_id, is_chatroom);
        }

        return window->window;
    }

    window = g_new0 (EmpathyLogWindow, 1);
    window->log_manager = empathy_log_manager_new ();

    filename = empathy_file_lookup ("empathy-log-window.glade",
                    "libempathy-gtk");
    glade = empathy_glade_get_file (filename,
                       "log_window",
                       NULL,
                       "log_window", &window->window,
                       "notebook", &window->notebook,
                       "entry_find", &window->entry_find,
                       "button_find", &window->button_find,
                       "treeview_find", &window->treeview_find,
                       "scrolledwindow_find", &window->scrolledwindow_find,
                       "button_previous", &window->button_previous,
                       "button_next", &window->button_next,
                       "entry_chats", &window->entry_chats,
                       "calendar_chats", &window->calendar_chats,
                       "vbox_chats", &window->vbox_chats,
                       "treeview_chats", &window->treeview_chats,
                       "scrolledwindow_chats", &window->scrolledwindow_chats,
                       NULL);
    g_free (filename);

    empathy_glade_connect (glade,
                  window,
                  "log_window", "destroy", log_window_destroy_cb,
                  "entry_find", "changed", log_window_entry_find_changed_cb,
                  "button_previous", "clicked", log_window_button_previous_clicked_cb,
                  "button_next", "clicked", log_window_button_next_clicked_cb,
                  "button_find", "clicked", log_window_button_find_clicked_cb,
                  "entry_chats", "changed", log_window_entry_chats_changed_cb,
                  "entry_chats", "activate", log_window_entry_chats_activate_cb,
                  NULL);

    g_object_unref (glade);

    g_object_add_weak_pointer (G_OBJECT (window->window),
                   (gpointer) &window);

    /* We set this up here so we can block it when needed. */
    g_signal_connect (window->calendar_chats, "day-selected",
              G_CALLBACK (log_window_calendar_chats_day_selected_cb),
              window);
    g_signal_connect (window->calendar_chats, "month-changed",
              G_CALLBACK (log_window_calendar_chats_month_changed_cb),
              window);

    /* Configure Search EmpathyChatView */
    window->chatview_find = empathy_chat_view_new ();
    gtk_container_add (GTK_CONTAINER (window->scrolledwindow_find),
               GTK_WIDGET (window->chatview_find));
    gtk_widget_show (GTK_WIDGET (window->chatview_find));

    /* Configure Contacts EmpathyChatView */
    window->chatview_chats = empathy_chat_view_new ();
    gtk_container_add (GTK_CONTAINER (window->scrolledwindow_chats),
               GTK_WIDGET (window->chatview_chats));
    gtk_widget_show (GTK_WIDGET (window->chatview_chats));

    /* Account chooser for chats */
    window->account_chooser_chats = empathy_account_chooser_new ();
    account_chooser = EMPATHY_ACCOUNT_CHOOSER (window->account_chooser_chats);

    gtk_box_pack_start (GTK_BOX (window->vbox_chats),
                window->account_chooser_chats,
                FALSE, TRUE, 0);

    g_signal_connect (window->account_chooser_chats, "changed",
              G_CALLBACK (log_window_chats_accounts_changed_cb),
              window);

    /* Populate */
    accounts = mc_accounts_list ();
    account_num = g_list_length (accounts);
    mc_accounts_list_free (accounts);

    if (account_num > 1) {
        gtk_widget_show (window->vbox_chats);
        gtk_widget_show (window->account_chooser_chats);
    } else {
        gtk_widget_hide (window->vbox_chats);
        gtk_widget_hide (window->account_chooser_chats);
    }

    /* Search List */
    log_window_find_setup (window);

    /* Contacts */
    log_window_chats_setup (window);
    log_window_chats_populate (window);

    /* Select chat */
    if (account && chat_id) {
        gtk_notebook_set_current_page (GTK_NOTEBOOK (window->notebook), 1);
        log_window_chats_set_selected (window, account,
                           chat_id, is_chatroom);
    }

    if (parent) {
        gtk_window_set_transient_for (GTK_WINDOW (window->window),
                          GTK_WINDOW (parent));
    }

    gtk_widget_show (window->window);

    return window->window;
}

static void
log_window_destroy_cb (GtkWidget       *widget,
               EmpathyLogWindow *window)
{
    g_free (window->last_find);
    g_object_unref (window->log_manager);

    g_free (window);
}

/*
 * Search code.
 */
static void
log_window_entry_find_changed_cb (GtkWidget       *entry,
                  EmpathyLogWindow *window)
{
    const gchar *str;
    gboolean     is_sensitive = TRUE;

    str = gtk_entry_get_text (GTK_ENTRY (window->entry_find));

    is_sensitive &= !G_STR_EMPTY (str);
    is_sensitive &= 
        !window->last_find || 
        (window->last_find && strcmp (window->last_find, str) != 0);

    gtk_widget_set_sensitive (window->button_find, is_sensitive);
}

static void
log_window_find_changed_cb (GtkTreeSelection *selection,
                EmpathyLogWindow  *window)
{
    GtkTreeView   *view;
    GtkTreeModel  *model;
    GtkTreeIter    iter;
    McAccount     *account;
    gchar         *chat_id;
    gboolean       is_chatroom;
    gchar         *date;
    EmpathyMessage *message;
    GList         *messages;
    GList         *l;
    gboolean       can_do_previous;
    gboolean       can_do_next;

    /* Get selected information */
    view = GTK_TREE_VIEW (window->treeview_find);
    model = gtk_tree_view_get_model (view);

    if (!gtk_tree_selection_get_selected (selection, NULL, &iter)) {
        gtk_widget_set_sensitive (window->button_previous, FALSE);
        gtk_widget_set_sensitive (window->button_next, FALSE);

        empathy_chat_view_clear (window->chatview_find);
    
        return;
    }

    gtk_widget_set_sensitive (window->button_previous, TRUE);
    gtk_widget_set_sensitive (window->button_next, TRUE);

    gtk_tree_model_get (model, &iter,
                COL_FIND_ACCOUNT, &account,
                COL_FIND_CHAT_ID, &chat_id,
                COL_FIND_IS_CHATROOM, &is_chatroom,
                COL_FIND_DATE, &date,
                -1);

    /* Clear all current messages shown in the textview */
    empathy_chat_view_clear (window->chatview_find);

    /* Turn off scrolling temporarily */
    empathy_chat_view_scroll (window->chatview_find, FALSE);

    /* Get messages */
    messages = empathy_log_manager_get_messages_for_date (window->log_manager,
                                  account,
                                  chat_id,
                                  is_chatroom,
                                  date);
    g_object_unref (account);
    g_free (date);
    g_free (chat_id);

    for (l = messages; l; l = l->next) {
        message = l->data;
        empathy_chat_view_append_message (window->chatview_find, message);
        g_object_unref (message);
    }
    g_list_free (messages);

    /* Scroll to the most recent messages */
    empathy_chat_view_scroll (window->chatview_find, TRUE);

    /* Highlight and find messages */
    empathy_chat_view_highlight (window->chatview_find,
                    window->last_find);
    empathy_chat_view_find_next (window->chatview_find,
                    window->last_find,
                    TRUE);
    empathy_chat_view_find_abilities (window->chatview_find,
                     window->last_find,
                     &can_do_previous,
                     &can_do_next);
    gtk_widget_set_sensitive (window->button_previous, can_do_previous);
    gtk_widget_set_sensitive (window->button_next, can_do_next);
    gtk_widget_set_sensitive (window->button_find, FALSE);
}

static void
log_window_find_populate (EmpathyLogWindow *window,
              const gchar     *search_criteria)
{
    GList              *hits, *l;

    GtkTreeView        *view;
    GtkTreeModel       *model;
    GtkTreeSelection   *selection;
    GtkListStore       *store;
    GtkTreeIter         iter;

    view = GTK_TREE_VIEW (window->treeview_find);
    model = gtk_tree_view_get_model (view);
    selection = gtk_tree_view_get_selection (view);
    store = GTK_LIST_STORE (model);

    empathy_chat_view_clear (window->chatview_find);

    gtk_list_store_clear (store);

    if (G_STR_EMPTY (search_criteria)) {
        /* Just clear the search. */
        return;
    }

    hits = empathy_log_manager_search_new (window->log_manager, search_criteria);

    for (l = hits; l; l = l->next) {
        EmpathyLogSearchHit *hit;
        const gchar         *account_name;
        const gchar         *account_icon;
        gchar               *date_readable;

        hit = l->data;

        /* Protect against invalid data (corrupt or old log files. */
        if (!hit->account || !hit->chat_id) {
            continue;
        }

        date_readable = empathy_log_manager_get_date_readable (hit->date);
        account_name = mc_account_get_display_name (hit->account);
        account_icon = empathy_icon_name_from_account (hit->account);

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
                    COL_FIND_ACCOUNT_ICON, account_icon,
                    COL_FIND_ACCOUNT_NAME, account_name,
                    COL_FIND_ACCOUNT, hit->account,
                    COL_FIND_CHAT_NAME, hit->chat_id, /* FIXME */
                    COL_FIND_CHAT_ID, hit->chat_id,
                    COL_FIND_IS_CHATROOM, hit->is_chatroom,
                    COL_FIND_DATE, hit->date,
                    COL_FIND_DATE_READABLE, date_readable,
                    -1);

        g_free (date_readable);

        /* FIXME: Update COL_FIND_CHAT_NAME */
        if (hit->is_chatroom) {
        } else {
        }
    }

    if (hits) {
        empathy_log_manager_search_free (hits);
    }
}

static void
log_window_find_setup (EmpathyLogWindow *window)
{
    GtkTreeView       *view;
    GtkTreeModel      *model;
    GtkTreeSelection  *selection;
    GtkTreeSortable   *sortable;
    GtkTreeViewColumn *column;
    GtkListStore      *store;
    GtkCellRenderer   *cell;
    gint               offset;

    view = GTK_TREE_VIEW (window->treeview_find);
    selection = gtk_tree_view_get_selection (view);

    /* New store */
    store = gtk_list_store_new (COL_FIND_COUNT,
                    G_TYPE_STRING,          /* account icon name */
                    G_TYPE_STRING,          /* account name */
                    MC_TYPE_ACCOUNT,        /* account */
                    G_TYPE_STRING,          /* chat name */
                    G_TYPE_STRING,          /* chat id */
                    G_TYPE_BOOLEAN,         /* is chatroom */
                    G_TYPE_STRING,          /* date */
                    G_TYPE_STRING);         /* date_readable */

    model = GTK_TREE_MODEL (store);
    sortable = GTK_TREE_SORTABLE (store);

    gtk_tree_view_set_model (view, model);

    /* New column */
    column = gtk_tree_view_column_new ();

    cell = gtk_cell_renderer_pixbuf_new ();
    gtk_tree_view_column_pack_start (column, cell, FALSE);
    gtk_tree_view_column_add_attribute (column, cell,
                        "icon-name",
                        COL_FIND_ACCOUNT_ICON);

    cell = gtk_cell_renderer_text_new ();
    gtk_tree_view_column_pack_start (column, cell, TRUE);
    gtk_tree_view_column_add_attribute (column, cell,
                        "text",
                        COL_FIND_ACCOUNT_NAME);

    gtk_tree_view_column_set_title (column, _("Account"));
    gtk_tree_view_append_column (view, column);

    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_clickable (column, TRUE);

    cell = gtk_cell_renderer_text_new ();
    offset = gtk_tree_view_insert_column_with_attributes (view, -1, _("Conversation"),
                                  cell, "text", COL_FIND_CHAT_NAME,
                                  NULL);

    column = gtk_tree_view_get_column (view, offset - 1);
    gtk_tree_view_column_set_sort_column_id (column, COL_FIND_CHAT_NAME);
    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_clickable (column, TRUE);

    cell = gtk_cell_renderer_text_new ();
    offset = gtk_tree_view_insert_column_with_attributes (view, -1, _("Date"),
                                  cell, "text", COL_FIND_DATE_READABLE,
                                  NULL);

    column = gtk_tree_view_get_column (view, offset - 1);
    gtk_tree_view_column_set_sort_column_id (column, COL_FIND_DATE);
    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_clickable (column, TRUE);

    /* Set up treeview properties */
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
    gtk_tree_sortable_set_sort_column_id (sortable,
                          COL_FIND_DATE,
                          GTK_SORT_ASCENDING);

    /* Set up signals */
    g_signal_connect (selection, "changed",
              G_CALLBACK (log_window_find_changed_cb),
              window);

    g_object_unref (store);
}

static void
log_window_button_find_clicked_cb (GtkWidget       *widget,
                   EmpathyLogWindow *window)
{
    const gchar *str;

    str = gtk_entry_get_text (GTK_ENTRY (window->entry_find));

    /* Don't find the same crap again */
    if (window->last_find && strcmp (window->last_find, str) == 0) {
        return;
    }

    g_free (window->last_find);
    window->last_find = g_strdup (str);

    log_window_find_populate (window, str);
}

static void
log_window_button_next_clicked_cb (GtkWidget       *widget,
                   EmpathyLogWindow *window)
{
    if (window->last_find) {
        gboolean can_do_previous;
        gboolean can_do_next;

        empathy_chat_view_find_next (window->chatview_find,
                        window->last_find,
                        FALSE);
        empathy_chat_view_find_abilities (window->chatview_find,
                         window->last_find,
                         &can_do_previous,
                         &can_do_next);
        gtk_widget_set_sensitive (window->button_previous, can_do_previous);
        gtk_widget_set_sensitive (window->button_next, can_do_next);
    }
}

static void
log_window_button_previous_clicked_cb (GtkWidget       *widget,
                       EmpathyLogWindow *window)
{
    if (window->last_find) {
        gboolean can_do_previous;
        gboolean can_do_next;

        empathy_chat_view_find_previous (window->chatview_find,
                        window->last_find,
                        FALSE);
        empathy_chat_view_find_abilities (window->chatview_find,
                         window->last_find,
                         &can_do_previous,
                         &can_do_next);
        gtk_widget_set_sensitive (window->button_previous, can_do_previous);
        gtk_widget_set_sensitive (window->button_next, can_do_next);
    }
}

/*
 * Chats Code
 */

static void
log_window_chats_changed_cb (GtkTreeSelection *selection,
                 EmpathyLogWindow  *window)
{
    /* Use last date by default */
    gtk_calendar_clear_marks (GTK_CALENDAR (window->calendar_chats));

    log_window_chats_get_messages (window, NULL);
}

static void
log_window_chats_populate (EmpathyLogWindow *window)
{
    EmpathyAccountChooser *account_chooser;
    McAccount            *account;
    GList                *chats, *l;

    GtkTreeView          *view;
    GtkTreeModel         *model;
    GtkTreeSelection     *selection;
    GtkListStore         *store;
    GtkTreeIter           iter;

    account_chooser = EMPATHY_ACCOUNT_CHOOSER (window->account_chooser_chats);
    account = empathy_account_chooser_get_account (account_chooser);

    view = GTK_TREE_VIEW (window->treeview_chats);
    model = gtk_tree_view_get_model (view);
    selection = gtk_tree_view_get_selection (view);
    store = GTK_LIST_STORE (model);

    /* Block signals to stop the logs being retrieved prematurely */
    g_signal_handlers_block_by_func (selection,
                     log_window_chats_changed_cb,
                     window);

    gtk_list_store_clear (store);

    chats = empathy_log_manager_get_chats (window->log_manager, account);
    for (l = chats; l; l = l->next) {
        EmpathyLogSearchHit *hit;

        hit = l->data;

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
                    COL_CHAT_ICON, "empathy-available", /* FIXME */
                    COL_CHAT_NAME, hit->chat_id,                
                    COL_CHAT_ACCOUNT, account,
                    COL_CHAT_ID, hit->chat_id,
                    COL_CHAT_IS_CHATROOM, hit->is_chatroom,
                    -1);

        /* FIXME: Update COL_CHAT_ICON/NAME */
        if (hit->is_chatroom) {
        } else {
        }
    }
    empathy_log_manager_search_free (chats);

    /* Unblock signals */
    g_signal_handlers_unblock_by_func (selection,
                       log_window_chats_changed_cb,
                       window);


    g_object_unref (account);
}

static void
log_window_chats_setup (EmpathyLogWindow *window)
{
    GtkTreeView       *view;
    GtkTreeModel      *model;
    GtkTreeSelection  *selection;
    GtkTreeSortable   *sortable;
    GtkTreeViewColumn *column;
    GtkListStore      *store;
    GtkCellRenderer   *cell;

    view = GTK_TREE_VIEW (window->treeview_chats);
    selection = gtk_tree_view_get_selection (view);

    /* new store */
    store = gtk_list_store_new (COL_CHAT_COUNT,
                    G_TYPE_STRING,    /* icon */
                    G_TYPE_STRING,    /* name */
                    MC_TYPE_ACCOUNT,  /* account */
                    G_TYPE_STRING,    /* id */
                    G_TYPE_BOOLEAN);  /* is chatroom */

    model = GTK_TREE_MODEL (store);
    sortable = GTK_TREE_SORTABLE (store);

    gtk_tree_view_set_model (view, model);

    /* new column */
    column = gtk_tree_view_column_new ();

    cell = gtk_cell_renderer_pixbuf_new ();
    gtk_tree_view_column_pack_start (column, cell, FALSE);
    gtk_tree_view_column_add_attribute (column, cell,
                        "icon-name",
                        COL_CHAT_ICON);

    cell = gtk_cell_renderer_text_new ();
    g_object_set (cell, "ellipsize", PANGO_ELLIPSIZE_END, NULL);
    gtk_tree_view_column_pack_start (column, cell, TRUE);
    gtk_tree_view_column_add_attribute (column, cell,
                        "text",
                        COL_CHAT_NAME);

    gtk_tree_view_append_column (view, column);

    /* set up treeview properties */
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
    gtk_tree_sortable_set_sort_column_id (sortable,
                          COL_CHAT_NAME,
                          GTK_SORT_ASCENDING);

    /* set up signals */
    g_signal_connect (selection, "changed",
              G_CALLBACK (log_window_chats_changed_cb),
              window);

    g_object_unref (store);
}

static void
log_window_chats_accounts_changed_cb (GtkWidget       *combobox,
                      EmpathyLogWindow *window)
{
    /* Clear all current messages shown in the textview */
    empathy_chat_view_clear (window->chatview_chats);

    log_window_chats_populate (window);
}

static void
log_window_chats_set_selected  (EmpathyLogWindow *window,
                McAccount       *account,
                const gchar     *chat_id,
                gboolean         is_chatroom)
{
    EmpathyAccountChooser *account_chooser;
    GtkTreeView          *view;
    GtkTreeModel         *model;
    GtkTreeSelection     *selection;
    GtkTreeIter           iter;
    GtkTreePath          *path;
    gboolean              ok;

    account_chooser = EMPATHY_ACCOUNT_CHOOSER (window->account_chooser_chats);
    empathy_account_chooser_set_account (account_chooser, account);

    view = GTK_TREE_VIEW (window->treeview_chats);
    model = gtk_tree_view_get_model (view);
    selection = gtk_tree_view_get_selection (view);

    if (!gtk_tree_model_get_iter_first (model, &iter)) {
        return;
    }

    for (ok = TRUE; ok; ok = gtk_tree_model_iter_next (model, &iter)) {
        McAccount *this_account;
        gchar     *this_chat_id;
        gboolean   this_is_chatroom;

        gtk_tree_model_get (model, &iter,
                    COL_CHAT_ACCOUNT, &this_account,
                    COL_CHAT_ID, &this_chat_id,
                    COL_CHAT_IS_CHATROOM, &this_is_chatroom,
                    -1);

        if (empathy_account_equal (this_account, account) &&
            strcmp (this_chat_id, chat_id) == 0 &&
            this_is_chatroom == is_chatroom) {
            gtk_tree_selection_select_iter (selection, &iter);
            path = gtk_tree_model_get_path (model, &iter);
            gtk_tree_view_scroll_to_cell (view, path, NULL, TRUE, 0.5, 0.0);
            gtk_tree_path_free (path);
            g_object_unref (this_account);
            g_free (this_chat_id);
            break;
        }

        g_object_unref (this_account);
        g_free (this_chat_id);
    }
}

static gboolean
log_window_chats_get_selected (EmpathyLogWindow  *window,
                   McAccount       **account,
                   gchar           **chat_id,
                   gboolean         *is_chatroom)
{
    GtkTreeView      *view;
    GtkTreeModel     *model;
    GtkTreeSelection *selection;
    GtkTreeIter       iter;
    gchar            *id = NULL;
    McAccount        *acc = NULL;
    gboolean          room = FALSE;

    view = GTK_TREE_VIEW (window->treeview_chats);
    model = gtk_tree_view_get_model (view);
    selection = gtk_tree_view_get_selection (view);

    if (!gtk_tree_selection_get_selected (selection, NULL, &iter)) {
        return FALSE;
    }

    gtk_tree_model_get (model, &iter,
                COL_CHAT_ACCOUNT, &acc,
                COL_CHAT_ID, &id,
                COL_CHAT_IS_CHATROOM, &room,
                -1);

    if (chat_id) {
        *chat_id = id;
    } else {
        g_free (id);
    }
    if (account) {
        *account = acc;
    } else {
        g_object_unref (acc);
    }
    if (is_chatroom) {
        *is_chatroom = room;
    }

    return TRUE;
}

static void
log_window_chats_get_messages (EmpathyLogWindow *window,
                   const gchar     *date_to_show)
{
    McAccount     *account;
    gchar         *chat_id;
    gboolean       is_chatroom;
    EmpathyMessage *message;
    GList         *messages;
    GList         *dates = NULL;
    GList         *l;
    const gchar   *date;
    guint          year_selected;
    guint          year;
    guint          month;
    guint          month_selected;
    guint          day;

    if (!log_window_chats_get_selected (window, &account,
                        &chat_id, &is_chatroom)) {
        return;
    }

    g_signal_handlers_block_by_func (window->calendar_chats,
                     log_window_calendar_chats_day_selected_cb,
                     window);

    /* Either use the supplied date or get the last */
    date = date_to_show;
    if (!date) {
        gboolean day_selected = FALSE;

        /* Get a list of dates and show them on the calendar */
        dates = empathy_log_manager_get_dates (window->log_manager,
                               account, chat_id,
                               is_chatroom);

        for (l = dates; l; l = l->next) {
            const gchar *str;

            str = l->data;
            if (!str) {
                continue;
            }

            sscanf (str, "%4d%2d%2d", &year, &month, &day);
            gtk_calendar_get_date (GTK_CALENDAR (window->calendar_chats),
                           &year_selected,
                           &month_selected,
                           NULL);

            month_selected++;

            if (!l->next) {
                date = str;
            }

            if (year != year_selected || month != month_selected) {
                continue;
            }


            empathy_debug (DEBUG_DOMAIN, "Marking date:'%s'", str);
            gtk_calendar_mark_day (GTK_CALENDAR (window->calendar_chats), day);

            if (l->next) {
                continue;
            }

            day_selected = TRUE;

            gtk_calendar_select_day (GTK_CALENDAR (window->calendar_chats), day);
        }

        if (!day_selected) {
            /* Unselect the day in the calendar */
            gtk_calendar_select_day (GTK_CALENDAR (window->calendar_chats), 0);
        }
    } else {
        sscanf (date, "%4d%2d%2d", &year, &month, &day);
        gtk_calendar_get_date (GTK_CALENDAR (window->calendar_chats),
                       &year_selected,
                       &month_selected,
                       NULL);

        month_selected++;

        if (year != year_selected && month != month_selected) {
            day = 0;
        }

        gtk_calendar_select_day (GTK_CALENDAR (window->calendar_chats), day);
    }

    g_signal_handlers_unblock_by_func (window->calendar_chats,
                       log_window_calendar_chats_day_selected_cb,
                       window);

    if (!date) {
        goto OUT;
    }

    /* Clear all current messages shown in the textview */
    empathy_chat_view_clear (window->chatview_chats);

    /* Turn off scrolling temporarily */
    empathy_chat_view_scroll (window->chatview_find, FALSE);

    /* Get messages */
    messages = empathy_log_manager_get_messages_for_date (window->log_manager,
                                  account, chat_id,
                                  is_chatroom,
                                  date);

    for (l = messages; l; l = l->next) {
        message = l->data;

        empathy_chat_view_append_message (window->chatview_chats,
                         message);
        g_object_unref (message);
    }
    g_list_free (messages);

    /* Turn back on scrolling */
    empathy_chat_view_scroll (window->chatview_find, TRUE);

    /* Give the search entry main focus */
    gtk_widget_grab_focus (window->entry_chats);

OUT:
    g_list_foreach (dates, (GFunc) g_free, NULL);
    g_list_free (dates);
    g_object_unref (account);
    g_free (chat_id);
}

static void
log_window_calendar_chats_day_selected_cb (GtkWidget       *calendar,
                       EmpathyLogWindow *window)
{
    guint  year;
    guint  month;
    guint  day;

    gchar *date;

    gtk_calendar_get_date (GTK_CALENDAR (calendar), &year, &month, &day);

    /* We need this hear because it appears that the months start from 0 */
    month++;

    date = g_strdup_printf ("%4.4d%2.2d%2.2d", year, month, day);

    empathy_debug (DEBUG_DOMAIN, "Currently selected date is:'%s'", date);

    log_window_chats_get_messages (window, date);

    g_free (date);
}

static void
log_window_calendar_chats_month_changed_cb (GtkWidget       *calendar,
                        EmpathyLogWindow *window)
{
    McAccount     *account;
    gchar         *chat_id;
    gboolean       is_chatroom;
    guint          year_selected;
    guint          month_selected;

    GList         *dates;
    GList         *l;

    gtk_calendar_clear_marks (GTK_CALENDAR (calendar));

    if (!log_window_chats_get_selected (window, &account,
                        &chat_id, &is_chatroom)) {
        empathy_debug (DEBUG_DOMAIN, "No chat selected to get dates for...");
        return;
    }

    g_object_get (calendar,
              "month", &month_selected,
              "year", &year_selected,
              NULL);

    /* We need this hear because it appears that the months start from 0 */
    month_selected++;

    /* Get the log object for this contact */
    dates = empathy_log_manager_get_dates (window->log_manager, account,
                           chat_id, is_chatroom);
    g_object_unref (account);
    g_free (chat_id);

    for (l = dates; l; l = l->next) {
        const gchar *str;
        guint        year;
        guint        month;
        guint        day;

        str = l->data;
        if (!str) {
            continue;
        }

        sscanf (str, "%4d%2d%2d", &year, &month, &day);

        if (year == year_selected && month == month_selected) {
            empathy_debug (DEBUG_DOMAIN, "Marking date:'%s'", str);
            gtk_calendar_mark_day (GTK_CALENDAR (window->calendar_chats), day);
        }
    }

    g_list_foreach (dates, (GFunc) g_free, NULL);
    g_list_free (dates);

    empathy_debug (DEBUG_DOMAIN,
              "Currently showing month %d and year %d",
              month_selected, year_selected);
}

static void
log_window_entry_chats_changed_cb (GtkWidget       *entry,
                   EmpathyLogWindow *window)
{
    const gchar *str;

    str = gtk_entry_get_text (GTK_ENTRY (window->entry_chats));
    empathy_chat_view_highlight (window->chatview_chats, str);

    if (str) {
        empathy_chat_view_find_next (window->chatview_chats,
                        str,
                        TRUE);
    }
}

static void
log_window_entry_chats_activate_cb (GtkWidget       *entry,
                    EmpathyLogWindow *window)
{
    const gchar *str;

    str = gtk_entry_get_text (GTK_ENTRY (window->entry_chats));

    if (str) {
        empathy_chat_view_find_next (window->chatview_chats,
                        str,
                        FALSE);
    }
}