path: root/mail/e-mail-notebook-view.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Srinivasa Ragavan <sragavan@gnome.org>
 *
 * Copyright (C) 2010 Intel corporation. (www.intel.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <glib/gi18n.h>

#include "mail/e-mail-reader.h"
#include "mail/message-list.h"
#include "mail/em-folder-tree.h"
#include "e-mail-notebook-view.h"
#include "e-mail-folder-pane.h"
#include "e-mail-folder-utils.h"
#include "e-mail-message-pane.h"

#include <shell/e-shell-window-actions.h>

#if HAVE_CLUTTER
#include <clutter/clutter.h>
#include <mx/mx.h>
#include <clutter-gtk/clutter-gtk.h>
#include <math.h>

#include "e-mail-tab-picker.h"
#endif

struct _EMailNotebookViewPrivate {
    GtkNotebook *book;
    EMailView *current_view;
    GHashTable *views;
    gboolean inited;

#if HAVE_CLUTTER
    EMailTabPicker *tab_picker;
    GtkWidget *embed;
    ClutterActor *actor;
    ClutterActor *stage;
#endif
};

enum {
    PROP_0,
    PROP_FORWARD_STYLE,
    PROP_GROUP_BY_THREADS,
    PROP_REPLY_STYLE
};

#define E_SHELL_WINDOW_ACTION_GROUP_MAIL(window) \
    E_SHELL_WINDOW_ACTION_GROUP ((window), "mail")

/* Forward Declarations */
static void e_mail_notebook_view_reader_init (EMailReaderInterface *interface);

G_DEFINE_TYPE_WITH_CODE (
    EMailNotebookView, e_mail_notebook_view, E_TYPE_MAIL_VIEW,
    G_IMPLEMENT_INTERFACE (
        E_TYPE_MAIL_READER, e_mail_notebook_view_reader_init))

#if HAVE_CLUTTER
static void
mnv_set_current_tab (EMailNotebookView *view,
                     gint page)
{
    clutter_actor_set_opacity (view->priv->actor, 0);
    gtk_notebook_set_current_page (view->priv->book, page);

    clutter_actor_animate (
        (ClutterActor *) view->priv->actor,
        CLUTTER_EASE_IN_SINE, 500, "opacity", 255, NULL);
}
#endif

static gint
emnv_get_page_num (EMailNotebookView *view,
                   GtkWidget *widget)
{
    EMailNotebookViewPrivate *priv = view->priv;
    gint i, n;

    n = gtk_notebook_get_n_pages (priv->book);

    for (i = 0; i < n; i++) {
        GtkWidget *curr = gtk_notebook_get_nth_page (priv->book, i);
        if (curr == widget)
            return i;
    }

    return 0;
}

static void
mnv_page_changed (GtkNotebook *book,
                  GtkWidget *page,
                  guint page_num,
                  EMailView *view)
{
    EMailNotebookViewPrivate *priv;
    EShellView *shell_view;
    EShellSidebar *shell_sidebar;
    EMFolderTree *folder_tree;
    EMailView *mview;
    CamelFolder *folder;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    shell_view = e_mail_view_get_shell_view (view);
    shell_sidebar = e_shell_view_get_shell_sidebar (shell_view);

    page = gtk_notebook_get_nth_page (book, page_num);
    folder = e_mail_reader_get_folder (E_MAIL_READER (page));
    mview = E_MAIL_VIEW (page);

    g_object_get (shell_sidebar, "folder-tree", &folder_tree, NULL);

    if (folder != NULL && E_IS_MAIL_FOLDER_PANE (mview)) {
        gchar *folder_uri;

        folder_uri = e_mail_folder_uri_from_folder (folder);
        em_folder_tree_set_selected (folder_tree, folder_uri, FALSE);
        g_free (folder_uri);
    }

    if (mview != priv->current_view) {
        e_mail_view_set_previous_view (mview, priv->current_view);
        priv->current_view = mview;
    }

    /* For EMailReader related changes to EShellView */
    g_signal_emit_by_name (view, "changed");
    g_signal_emit_by_name (view, "folder-loaded");

    /* For EMailShellContent related changes */
    g_signal_emit_by_name (view, "view-changed");

    g_object_unref (folder_tree);
}

#if HAVE_CLUTTER
static void
fix_tab_picker_width (GtkWidget *widget,
                      GtkAllocation *allocation,
                      ClutterActor *actor)
{
    ClutterActor *stage = g_object_get_data ((GObject *)actor, "stage");

    clutter_actor_set_size (actor, allocation->width - 1, -1);
    clutter_actor_set_size (stage, allocation->width - 1, -1);
}

static void
fix_height_cb (ClutterActor *actor,
               GParamSpec *pspec,
               ClutterActor *table)
{
    GtkWidget *embed = (GtkWidget *)g_object_get_data ((GObject *)actor, "embed");
    ClutterActor *stage = g_object_get_data ((GObject *)actor, "stage");

    clutter_actor_set_height (stage, clutter_actor_get_height (actor));
    gtk_widget_set_size_request (embed, -1, (gint) clutter_actor_get_height (actor));
}

static void
chooser_clicked_cb (EMailTabPicker *picker,
                    EMailNotebookView *view)
{
    EMailNotebookViewPrivate *priv;

    gboolean preview_mode;

    priv = view->priv;
    preview_mode = !e_mail_tab_picker_get_preview_mode (priv->tab_picker);

    e_mail_tab_picker_set_preview_mode (priv->tab_picker , preview_mode);
}

static void
tab_picker_preview_mode_notify (EMailTabPicker *picker,
                                GParamSpec *pspec,
                                EMailNotebookView *view)
{
    GList *tabs, *t;
    gboolean preview_mode = e_mail_tab_picker_get_preview_mode (picker);

    clutter_actor_set_name (
        CLUTTER_ACTOR (picker),
        preview_mode ? "tab-picker-preview" : NULL);

    tabs = e_mail_tab_picker_get_tabs (picker);
    for (t = tabs; t; t = t->next) {
        EMailTab *tab;
        ClutterActor *preview;
        tab = E_MAIL_TAB (t->data);

        preview = e_mail_tab_get_preview_actor (tab);

        if (!preview)
            continue;

        if (preview_mode) {
            /* Show all pages so that the preview clones work correctly */
            clutter_actor_set_opacity (preview, 255);
            clutter_actor_show (preview);
        } else {
            clutter_actor_hide (preview);
        }
    }
    g_list_free (tabs);
}

static void
mnv_tab_anim_frame_cb (ClutterTimeline *timeline,
                       gint frame_num,
                       EMailTab *tab)
{
    if (!clutter_actor_get_parent (CLUTTER_ACTOR (tab))) {
        clutter_timeline_stop (timeline);
        g_object_unref (timeline);
        g_object_unref (tab);

        return;
    }

    e_mail_tab_set_width (tab, 200 * clutter_timeline_get_progress (timeline));
}

static void
mnv_tab_anim_complete_cb (ClutterTimeline *timeline,
                          EMailTab *tab)
{
    e_mail_tab_set_width (tab, 200);
    g_object_unref (tab);
    g_object_unref (timeline);
}

struct _tab_data {
    gboolean select;
    EMailNotebookView *view;
    EMailTab *tab;
};

static void
mnv_tab_closed_cb (ClutterTimeline *timeline,
                   struct _tab_data *data)
{
    EMailView *page = g_object_get_data ((GObject *)data->tab, "page");
    EMailView *prev;
    gint num;

    if (E_IS_MAIL_FOLDER_PANE (page)) {
        CamelFolder *folder;
        gchar *folder_uri;

        folder = e_mail_reader_get_folder (E_MAIL_READER (page));
        folder_uri = e_mail_folder_uri_from_folder (folder);
        g_hash_table_remove (data->view->priv->views, folder_uri);
        g_free (folder_uri);
    }

    prev = e_mail_view_get_previous_view (page);
    if (prev) {
        num = emnv_get_page_num (data->view, (GtkWidget *) prev);
        mnv_set_current_tab (data->view, num);
        e_mail_tab_picker_set_current_tab (data->view->priv->tab_picker, num);
    }

    e_mail_tab_picker_remove_tab (data->view->priv->tab_picker, data->tab);
    gtk_notebook_remove_page (data->view->priv->book,
            gtk_notebook_page_num (data->view->priv->book, (GtkWidget *) page));

}

static void
mnv_tab_closed (EMailTab *tab,
                EMailNotebookView *view)
{
    EMailNotebookViewPrivate *priv = view->priv;
    gint page, cur;
    gboolean select = FALSE;
    ClutterTimeline *timeline;
    struct _tab_data *data = g_new0 (struct _tab_data, 1);

    if (e_mail_tab_picker_get_n_tabs (priv->tab_picker) == 1)
        return;

    page = e_mail_tab_picker_get_tab_no (priv->tab_picker,
                         tab);
    cur = e_mail_tab_picker_get_current_tab (priv->tab_picker);

    if (cur == page)
        select = TRUE;

    data->select  = select;
    data->tab = tab;
    data->view = view;

    clutter_actor_set_reactive (CLUTTER_ACTOR (tab), FALSE);
    timeline = clutter_timeline_new (150);
    clutter_timeline_set_direction (timeline, CLUTTER_TIMELINE_BACKWARD);
    g_signal_connect (
        timeline, "new-frame",
        G_CALLBACK (mnv_tab_anim_frame_cb), tab);
    g_signal_connect (
        timeline, "completed",
        G_CALLBACK (mnv_tab_closed_cb), data);
    clutter_timeline_start (timeline);
}

static void
tab_activated_cb (EMailTabPicker *picker,
                  EMailTab *tab,
                  EMailNotebookView *view)
{
    EMailView *page = g_object_get_data ((GObject *)tab, "page");
    gint num = emnv_get_page_num (view, (GtkWidget *) page);

    mnv_set_current_tab (view, num);
}
#endif

static void
tab_remove_gtk_cb (GtkWidget *button,
                   EMailNotebookView *view)
{
    EMailView *page = g_object_get_data ((GObject *)button, "page");
    EMailView *prev;
    gint num;

    if (gtk_notebook_get_n_pages (view->priv->book) == 1)
        return;

    if (E_IS_MAIL_FOLDER_PANE (page)) {
        CamelFolder *folder;
        gchar *folder_uri;

        folder = e_mail_reader_get_folder (E_MAIL_READER (page));
        folder_uri = e_mail_folder_uri_from_folder (folder);
        g_hash_table_remove (view->priv->views, folder_uri);
        g_free (folder_uri);
    }

    prev = e_mail_view_get_previous_view (page);
    if (prev) {
        num = emnv_get_page_num (view, (GtkWidget *) prev);
        gtk_notebook_set_current_page (view->priv->book, num);
    }
    gtk_notebook_remove_page (view->priv->book,
            gtk_notebook_page_num (view->priv->book, (GtkWidget *) page));

}

static void
adjust_label_size_request (GtkWidget *view,
                           GtkAllocation *allocation,
                           GtkWidget *label)
{
    GtkRequisition requisition;
    gint max_width = allocation->width / 2;

    /* We make sure the label is not over-ellipisized, but doesn't
     * get too big to cause the tab to not fit either. */
    gtk_widget_get_preferred_size (label, NULL, &requisition);
    if (requisition.width < max_width)
        gtk_widget_set_size_request (label, requisition.width, -1);
    else
        gtk_widget_set_size_request (label, max_width, -1);
}

static void
disconnect_label_adjusting (EMailNotebookView *view,
                            GtkWidget *label)
{
    g_signal_handlers_disconnect_by_func (
        view,
        adjust_label_size_request,
        label);
}

static GtkWidget *
create_tab_label (EMailNotebookView *view,
                  EMailView *page,
                  const gchar *str)
{
    GtkWidget *container, *widget;
    GtkAllocation allocation;

    widget = gtk_hbox_new (FALSE, 0);
    gtk_widget_show (widget);
    container = widget;

    widget = gtk_label_new (str);
    gtk_label_set_ellipsize (GTK_LABEL (widget), PANGO_ELLIPSIZE_END);
    gtk_widget_show (widget);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, FALSE, 0);

    gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
    adjust_label_size_request (GTK_WIDGET (view), &allocation, widget);

    g_signal_connect (
        view, "size-allocate",
        G_CALLBACK (adjust_label_size_request), widget);

    g_object_weak_ref (
        G_OBJECT (widget),
        (GWeakNotify) disconnect_label_adjusting,
        view);

    widget = gtk_button_new ();
    gtk_button_set_relief (GTK_BUTTON (widget), GTK_RELIEF_NONE);
    gtk_button_set_image (
        GTK_BUTTON (widget), gtk_image_new_from_stock (
        "gtk-close", GTK_ICON_SIZE_MENU));
    gtk_widget_show_all (widget);
    gtk_box_pack_end (GTK_BOX (container), widget, FALSE, FALSE, 0);
    g_object_set_data ((GObject *)widget, "page", page);
    g_object_set_data ((GObject *)page, "close-button", widget);

    g_signal_connect (
        widget, "clicked",
        G_CALLBACK (tab_remove_gtk_cb), view);

    return container;
}

#if HAVE_CLUTTER

static ClutterActor *
create_gtk_actor (GtkWidget *vbox)
{
  GtkWidget       *bin;
  ClutterActor    *gtk_actor;

  gtk_actor = gtk_clutter_actor_new ();
  bin = gtk_clutter_actor_get_widget (GTK_CLUTTER_ACTOR (gtk_actor));

  gtk_container_add (GTK_CONTAINER (bin), vbox);

  gtk_widget_show (bin);
  gtk_widget_show (vbox);
  return gtk_actor;
}

static void
fix_clutter_embed_width (GtkWidget *widget,
                         GtkAllocation *allocation,
                         ClutterActor *actor)
{
    GtkWidget *embed = (GtkWidget *)g_object_get_data ((GObject *)actor, "embed");
    GtkAllocation galoc;

    gtk_widget_get_allocation (embed, &galoc);
    clutter_actor_set_size (actor, allocation->width - 1, galoc.height);
}

static GtkWidget *
create_under_clutter (GtkWidget *widget,
                      GtkWidget *paned)
{
    GtkWidget *embed;
    ClutterActor *stage, *actor;

    embed = gtk_clutter_embed_new ();
    gtk_widget_show (embed);

    actor = create_gtk_actor (widget);
    clutter_actor_show (actor);
    stage = gtk_clutter_embed_get_stage ((GtkClutterEmbed *) embed);
    clutter_container_add_actor ((ClutterContainer *) stage, actor);

    g_object_set_data ((GObject *)actor, "embed", embed);
    g_object_set_data ((GObject *)actor, "stage", stage);
    g_object_set_data ((GObject *)actor, "widget", widget);
    g_object_set_data ((GObject *)widget, "actor", actor);
    g_object_set_data ((GObject *)embed, "actor", actor);

    g_signal_connect (
        paned, "size-allocate",
        G_CALLBACK (fix_clutter_embed_width), actor);
    clutter_actor_show (stage);

    return embed;
}

#endif

static void
mail_notebook_view_constructed (GObject *object)
{
    EMailNotebookViewPrivate *priv;
    EShellView *shell_view;
    GtkWidget *container;
    GtkWidget *widget;
#if HAVE_CLUTTER
    EMailTab *tab;
    ClutterActor *stage, *clone;
    ClutterTimeline *timeline;
#endif

    priv = E_MAIL_NOTEBOOK_VIEW (object)->priv;

    container = GTK_WIDGET (object);

#if HAVE_CLUTTER
    widget = gtk_clutter_embed_new ();
    gtk_widget_show (widget);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);

    stage = gtk_clutter_embed_get_stage ((GtkClutterEmbed *) widget);
    clutter_actor_show (stage);
    clutter_actor_set_reactive (stage, TRUE);

    priv->tab_picker = (EMailTabPicker *) e_mail_tab_picker_new ();
    clutter_actor_show ((ClutterActor *) priv->tab_picker);
    g_signal_connect (
        priv->tab_picker, "tab-activated",
        G_CALLBACK (tab_activated_cb), object);
    g_signal_connect (
        priv->tab_picker, "chooser-clicked",
        G_CALLBACK (chooser_clicked_cb), object);
    g_signal_connect (
        priv->tab_picker, "notify::preview-mode",
        G_CALLBACK (tab_picker_preview_mode_notify), object);
    g_signal_connect (
        priv->tab_picker, "notify::height",
        G_CALLBACK (fix_height_cb), widget);

    clutter_container_add_actor (
        (ClutterContainer *) stage,
        (ClutterActor *) priv->tab_picker);

    e_mail_tab_picker_enable_drop (priv->tab_picker, TRUE);

    g_object_set_data ((GObject *)priv->tab_picker, "embed", widget);
    g_object_set_data ((GObject *)priv->tab_picker, "stage", stage);

    g_signal_connect (
        object, "size-allocate",
        G_CALLBACK (fix_tab_picker_width), priv->tab_picker);

    clutter_actor_set_height (
        stage, clutter_actor_get_height (
        (ClutterActor *) priv->tab_picker));
    gtk_widget_set_size_request (
        widget, -1, (gint) clutter_actor_get_height (
        (ClutterActor *) priv->tab_picker));

    tab = (EMailTab *) e_mail_tab_new_full ("", NULL, 1);
    clone = e_mail_tab_new_full ("", NULL, 200);

    e_mail_tab_set_can_close ((EMailTab *) clone, FALSE);
    clutter_actor_set_reactive (clone, FALSE);
    clutter_actor_show (clone);

    e_mail_tab_set_preview_actor ((EMailTab *) tab, clone);
    e_mail_tab_set_can_close (tab, TRUE);

    e_mail_tab_picker_add_tab (priv->tab_picker, tab, -1);
    clutter_actor_show ((ClutterActor *) tab);
    e_mail_tab_picker_set_current_tab (priv->tab_picker, 0);
    e_mail_tab_enable_drag (tab, TRUE);

    g_object_ref (tab);
    timeline = clutter_timeline_new (150);
    g_signal_connect (
        timeline, "new-frame",
        G_CALLBACK (mnv_tab_anim_frame_cb), tab);
    g_signal_connect (
        timeline, "completed",
        G_CALLBACK (mnv_tab_anim_complete_cb), tab);
    clutter_timeline_start (timeline);
#endif

    widget = gtk_notebook_new ();
    priv->book = (GtkNotebook *) widget;
    gtk_widget_show (widget);
#if HAVE_CLUTTER
    priv->embed = create_under_clutter (widget, container);
    gtk_box_pack_start (GTK_BOX (container), priv->embed, TRUE, TRUE, 0);
    priv->actor = g_object_get_data((GObject *)priv->embed, "actor");
    priv->stage = g_object_get_data((GObject *)priv->actor, "stage");
#else
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
#endif

#if HAVE_CLUTTER
    gtk_notebook_set_show_tabs ((GtkNotebook *) widget, FALSE);
#else
    gtk_notebook_set_scrollable ((GtkNotebook *) widget, TRUE);
#endif

    gtk_notebook_set_show_border ((GtkNotebook *) widget, FALSE);

    shell_view = e_mail_view_get_shell_view (E_MAIL_VIEW (object));
    priv->current_view = e_mail_folder_pane_new (shell_view);
    e_mail_view_set_preview_visible (priv->current_view, FALSE);
    gtk_widget_show (GTK_WIDGET (priv->current_view));

    gtk_notebook_append_page (
        priv->book, GTK_WIDGET (priv->current_view),
        create_tab_label (E_MAIL_NOTEBOOK_VIEW (object),
        priv->current_view, _("Please select a folder")));

    g_signal_connect (
        priv->book, "switch-page",
        G_CALLBACK (mnv_page_changed), object);

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_mail_notebook_view_parent_class)->constructed (object);
}

static void
mail_notebook_view_set_property (GObject *object,
                                 guint property_id,
                                 const GValue *value,
                                 GParamSpec *pspec)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (object)->priv;

    switch (property_id) {
        case PROP_FORWARD_STYLE:
            e_mail_reader_set_forward_style (
                E_MAIL_READER (priv->current_view),
                g_value_get_enum (value));
            return;

        case PROP_GROUP_BY_THREADS:
            e_mail_reader_set_group_by_threads (
                E_MAIL_READER (priv->current_view),
                g_value_get_boolean (value));
            return;

        case PROP_REPLY_STYLE:
            e_mail_reader_set_reply_style (
                E_MAIL_READER (priv->current_view),
                g_value_get_enum (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_notebook_view_get_property (GObject *object,
                                 guint property_id,
                                 GValue *value,
                                 GParamSpec *pspec)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (object)->priv;

    switch (property_id) {
        case PROP_FORWARD_STYLE:
            g_value_set_enum (
                value,
                e_mail_reader_get_forward_style (
                E_MAIL_READER (priv->current_view)));
            return;

        case PROP_GROUP_BY_THREADS:
            g_value_set_boolean (
                value,
                e_mail_reader_get_group_by_threads (
                E_MAIL_READER (priv->current_view)));
            return;

        case PROP_REPLY_STYLE:
            g_value_set_enum (
                value,
                e_mail_reader_get_reply_style (
                E_MAIL_READER (priv->current_view)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_notebook_view_set_search_strings (EMailView *view,
                                       GSList *search_strings)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    e_mail_view_set_search_strings (priv->current_view, search_strings);
}

static GalViewInstance *
mail_notebook_view_get_view_instance (EMailView *view)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return NULL;

    return e_mail_view_get_view_instance (priv->current_view);
}

static void
mail_notebook_view_update_view_instance (EMailView *view)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return;

    e_mail_view_update_view_instance (priv->current_view);
}

static void
mail_notebook_view_set_orientation (EMailView *view,
                                    GtkOrientation orientation)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return;

    e_mail_view_set_orientation (priv->current_view, orientation);
}

static GtkOrientation
mail_notebook_view_get_orientation (EMailView *view)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return GTK_ORIENTATION_VERTICAL;

    return e_mail_view_get_orientation (priv->current_view);
}

static gboolean
mail_notebook_view_get_show_deleted (EMailView *view)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return FALSE;

    return e_mail_view_get_show_deleted (priv->current_view);
}

static void
mail_notebook_view_set_show_deleted (EMailView *view,
                                     gboolean show_deleted)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return;

    e_mail_view_set_show_deleted (priv->current_view, show_deleted);
}

static gboolean
mail_notebook_view_get_preview_visible (EMailView *view)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return FALSE;

    return e_mail_view_get_preview_visible (priv->current_view);
}

static void
mail_notebook_view_set_preview_visible (EMailView *view,
                                        gboolean preview_visible)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (view)->priv;

    if (priv->current_view == NULL)
        return;

    e_mail_view_set_preview_visible (priv->current_view, preview_visible);
}

static GtkActionGroup *
mail_notebook_view_get_action_group (EMailReader *reader,
                                     EMailReaderActionGroup group)
{
    EMailView *view;
    EShellView *shell_view;
    EShellWindow *shell_window;
    const gchar *group_name;

    view = E_MAIL_VIEW (reader);
    shell_view = e_mail_view_get_shell_view (view);
    shell_window = e_shell_view_get_shell_window (shell_view);

    switch (group) {
        case E_MAIL_READER_ACTION_GROUP_STANDARD:
            group_name = "mail";
            break;
        case E_MAIL_READER_ACTION_GROUP_SEARCH_FOLDERS:
            group_name = "search-folders";
            break;
        default:
            g_return_val_if_reached (NULL);
    }

    return e_shell_window_get_action_group (shell_window, group_name);
}

static EAlertSink *
mail_notebook_view_get_alert_sink (EMailReader *reader)
{
    EMailView *view;
    EShellView *shell_view;
    EShellContent *shell_content;

    view = E_MAIL_VIEW (reader);
    shell_view = e_mail_view_get_shell_view (view);
    shell_content = e_shell_view_get_shell_content (shell_view);

    return E_ALERT_SINK (shell_content);
}

static EMailBackend *
mail_notebook_view_get_backend (EMailReader *reader)
{
    EMailView *view;
    EShellView *shell_view;
    EShellBackend *shell_backend;

    view = E_MAIL_VIEW (reader);
    shell_view = e_mail_view_get_shell_view (view);
    shell_backend = e_shell_view_get_shell_backend (shell_view);

    return E_MAIL_BACKEND (shell_backend);
}

static EMFormatHTML *
mail_notebook_view_get_formatter (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return NULL;

    return e_mail_reader_get_formatter (E_MAIL_READER (priv->current_view));
}

static gboolean
mail_notebook_view_get_hide_deleted (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return FALSE;

    reader = E_MAIL_READER (priv->current_view);

    return e_mail_reader_get_hide_deleted (reader);
}

static GtkWidget *
mail_notebook_view_get_message_list (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return NULL;

    reader = E_MAIL_READER (priv->current_view);

    return e_mail_reader_get_message_list (reader);
}

static GtkMenu *
mail_notebook_view_get_popup_menu (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return NULL;

    reader = E_MAIL_READER (priv->current_view);

    return e_mail_reader_get_popup_menu (reader);
}

static GtkWindow *
mail_notebook_view_get_window (EMailReader *reader)
{
    EMailView *view;
    EShellWindow *shell_window;
    EShellView *shell_view;

    view = E_MAIL_VIEW (reader);
    shell_view = e_mail_view_get_shell_view (view);
    shell_window = e_shell_view_get_shell_window (shell_view);

    return GTK_WINDOW (shell_window);
}

static void
reconnect_changed_event (EMailReader *child,
                         EMailReader *parent)
{
    g_signal_emit_by_name (parent, "changed");
}

static void
reconnect_folder_loaded_event (EMailReader *child,
                               EMailReader *parent)
{
    g_signal_emit_by_name (parent, "folder-loaded");
}

static void
mail_netbook_view_open_mail (EMailView *view,
                             const gchar *uid,
                             EMailNotebookView *nview)
{
    EMailNotebookViewPrivate *priv;
    EShellView *shell_view;
    CamelFolder *folder;
    EMailView *pane;
    gint page;
    CamelMessageInfo *info;
    gint pos;

#if HAVE_CLUTTER
    EMailTab *tab;
    ClutterActor *clone;
    ClutterTimeline *timeline;
    GtkWidget *mlist;
#endif

    priv = nview->priv;

#if HAVE_CLUTTER
    e_mail_tab_set_active (
        e_mail_tab_picker_get_tab (priv->tab_picker,
        e_mail_tab_picker_get_current_tab (priv->tab_picker)), FALSE);
#endif

    shell_view = e_mail_view_get_shell_view (E_MAIL_VIEW (nview));
    pos = emnv_get_page_num (nview, GTK_WIDGET (priv->current_view));
    pane = e_mail_message_pane_new (shell_view);
    e_mail_view_set_previous_view (pane, priv->current_view);
    E_MAIL_MESSAGE_PANE (pane)->parent_folder_view = priv->current_view;
    priv->current_view = pane;

    gtk_widget_show (GTK_WIDGET (pane));

    folder = e_mail_reader_get_folder (E_MAIL_READER (view));

    info = camel_folder_get_message_info (folder, uid);

    page = gtk_notebook_insert_page (
        priv->book, GTK_WIDGET (pane),
        create_tab_label (nview, priv->current_view,
        camel_message_info_subject (info)), pos + 1);

#if HAVE_CLUTTER
    mlist = e_mail_reader_get_message_list (E_MAIL_READER (pane));
    mnv_set_current_tab (nview, page);
    g_object_set_data ((GObject *)priv->current_view, "stage", priv->stage);
    g_object_set_data ((GObject *)mlist, "stage", priv->stage);
    g_object_set_data ((GObject *)mlist, "preview-actor", priv->actor);
#else
    gtk_notebook_set_current_page (priv->book, page);
#endif

#if HAVE_CLUTTER
    tab = (EMailTab *) e_mail_tab_new_full (
        camel_message_info_subject (info), NULL, 1);
    g_object_set_data ((GObject *)tab, "page", pane);
    g_object_set_data ((GObject *)pane, "tab", tab);

    clutter_actor_show ((ClutterActor *) tab);

    clone = e_mail_tab_new_full (camel_message_info_subject (info), NULL, 200);
    clutter_actor_set_reactive (clone, FALSE);
    clutter_actor_show (clone);

    e_mail_tab_set_preview_actor (tab, clone);
    e_mail_tab_set_can_close (tab, TRUE);
    e_mail_tab_picker_add_tab (priv->tab_picker, tab, pos + 1);
    e_mail_tab_enable_drag (tab, TRUE);

    page = e_mail_tab_picker_get_tab_no (priv->tab_picker, tab);
    e_mail_tab_picker_set_current_tab (priv->tab_picker, page);

    g_signal_connect (tab , "closed",
              G_CALLBACK (mnv_tab_closed), nview);

    g_object_ref (tab);
    timeline = clutter_timeline_new (150);
    g_signal_connect (
        timeline, "new-frame",
        G_CALLBACK (mnv_tab_anim_frame_cb), tab);
    g_signal_connect (
        timeline, "completed",
        G_CALLBACK (mnv_tab_anim_complete_cb), tab);
    clutter_timeline_start (timeline);
#endif

    g_signal_connect (
        E_MAIL_READER(pane), "changed",
        G_CALLBACK (reconnect_changed_event), nview);
    g_signal_connect (
        E_MAIL_READER (pane), "folder-loaded",
        G_CALLBACK (reconnect_folder_loaded_event), nview);
    e_mail_reader_set_folder (
        E_MAIL_READER (pane), folder);
    e_mail_reader_set_group_by_threads (
        E_MAIL_READER (pane),
        e_mail_reader_get_group_by_threads (E_MAIL_READER (view)));

    e_mail_reader_enable_show_folder (E_MAIL_READER (pane));
    e_mail_reader_set_message (E_MAIL_READER (pane), uid);
    camel_message_info_free (info);
}

#if HAVE_CLUTTER
static ClutterActor *
build_histogram (GtkWidget *widget,
                 CamelFolder *folder)
{
    gint week_time = 60 * 60 * 24 * 7;
    gint weeks[54];
    gint i;
    GPtrArray *uids;
    gint max = 1;
    ClutterActor *texture;
    cairo_t *cr;
    gfloat ratio;
    gint x = 0;
    time_t now = time (NULL);

    for (i = 0; i < 54; i++)
        weeks[i] = 0;

    uids = camel_folder_get_uids (folder);
    camel_folder_summary_prepare_fetch_all (folder->summary, NULL);
    for (i = 0; i < uids->len; i++) {
        CamelMessageInfo *info;

        info = camel_folder_get_message_info (folder, uids->pdata[i]);
        if (info) {
            time_t dreceived = now - camel_message_info_date_received (info);
            gint week;

            week = (dreceived / week_time) - 1;
            if (week > 52)
                weeks[53]++;
            else
                weeks[week]++;

            camel_message_info_free (info);
        }
    }

    for (i = 0; i< 53; i++) {
        if (weeks[i] > max)
            max = weeks[i];
    }

    ratio = 50.0 / max;

    camel_folder_free_uids (folder, uids);

    texture = clutter_cairo_texture_new (200, 50);
    clutter_actor_set_size (texture, 200, 50);
    cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE (texture));

    clutter_actor_show_all (texture);

    cairo_save (cr);
    cairo_new_path (cr);
    cairo_move_to (cr, x, 50 - (weeks[52] * ratio));

    cairo_set_source_rgba (cr, 0.3, 0.2, 0.4, 1.0);

    for (i = 51; i >= 0; i--) {
        x+=3;
        cairo_line_to (cr, x, 50 - (weeks[i]*ratio));

    }

    cairo_stroke (cr);
    cairo_restore (cr);

    cairo_save (cr);

    cairo_set_source_rgba (cr, 0.8, 0.5, 0.3, 1.0);
    cairo_arc (cr, x,  50 - (weeks[0] * ratio), 3, 0, 2 *M_PI);

    cairo_fill (cr);
    cairo_restore (cr);

    cairo_destroy (cr);

    return texture;
}
#endif

static void
mail_notebook_view_set_folder (EMailReader *reader,
                               CamelFolder *folder)
{
    EMailNotebookViewPrivate *priv;
    GtkWidget *new_view;
    gchar *folder_uri;
#if HAVE_CLUTTER
    EMailTab *tab;
    ClutterActor *clone;
    ClutterTimeline *timeline;
#endif

    if (folder == NULL)
        return;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    folder_uri = e_mail_folder_uri_from_folder (folder);
    new_view = g_hash_table_lookup (priv->views, folder_uri);
    g_free (folder_uri);

    if (new_view) {
        gint curr = emnv_get_page_num (E_MAIL_NOTEBOOK_VIEW (reader), new_view);
#if HAVE_CLUTTER
        EMailTab *tab;

        if (curr == e_mail_tab_picker_get_current_tab (priv->tab_picker))
            return;

        e_mail_tab_set_active (e_mail_tab_picker_get_tab (priv->tab_picker,
                        e_mail_tab_picker_get_current_tab (priv->tab_picker)),
                    FALSE);
#endif

        priv->current_view = (EMailView *) new_view;
#if HAVE_CLUTTER
        mnv_set_current_tab (E_MAIL_NOTEBOOK_VIEW (reader), curr);
#else
        gtk_notebook_set_current_page (priv->book, curr);
#endif

#if HAVE_CLUTTER
        tab = (EMailTab *)g_object_get_data ((GObject *)priv->current_view, "page");
        curr = e_mail_tab_picker_get_tab_no (priv->tab_picker, tab);
        e_mail_tab_picker_set_current_tab (priv->tab_picker, curr);
#endif
        return;
    }

    /* FIXME Redundant NULL check. */
    if (folder != NULL) {
        gint page;
#if HAVE_CLUTTER
        GtkWidget *list;
#endif

        if (priv->inited) {
            EMailView *old_view = priv->current_view;
            EShellView *shell_view;

            shell_view = e_mail_view_get_shell_view (E_MAIL_VIEW (reader));
            priv->current_view = e_mail_folder_pane_new (shell_view);
            gtk_widget_show ((GtkWidget *) priv->current_view);
            e_mail_view_set_previous_view (priv->current_view, old_view);
            page = gtk_notebook_append_page (
                priv->book, (GtkWidget *) priv->current_view,
                create_tab_label (
                    E_MAIL_NOTEBOOK_VIEW (reader),
                    priv->current_view,
                    camel_folder_get_full_name (folder)));
#if HAVE_CLUTTER
            mnv_set_current_tab (E_MAIL_NOTEBOOK_VIEW (reader), page);
#else
            gtk_notebook_set_current_page (priv->book, page);
#endif

#if HAVE_CLUTTER
            e_mail_tab_set_active (
                e_mail_tab_picker_get_tab (
                    priv->tab_picker,
                    e_mail_tab_picker_get_current_tab (
                        priv->tab_picker)),
                FALSE);

            tab = (EMailTab *) e_mail_tab_new_full (
                camel_folder_get_full_name (folder), NULL, 1);
            g_object_set_data ((GObject *)tab, "page", priv->current_view);
            g_object_set_data ((GObject *)priv->current_view, "page", tab);
            g_object_set_data ((GObject *)priv->current_view, "tab", tab);

            clutter_actor_show ((ClutterActor *) tab);

            clone = build_histogram ((GtkWidget *) reader, folder);
            clutter_actor_set_reactive (clone, FALSE);
            clutter_actor_show (clone);

            e_mail_tab_set_preview_actor (tab, clone);
            e_mail_tab_set_can_close (tab, TRUE);
            e_mail_tab_set_preview_mode (
                tab, e_mail_tab_picker_get_preview_mode (
                priv->tab_picker));

            e_mail_tab_picker_add_tab (priv->tab_picker, tab, -1);
            page = e_mail_tab_picker_get_tab_no (priv->tab_picker, tab);
            e_mail_tab_picker_set_current_tab (priv->tab_picker, page);

            e_mail_tab_enable_drag (tab, TRUE);
            g_object_ref (tab);
            timeline = clutter_timeline_new (150);
            g_signal_connect (
                timeline, "new-frame",
                G_CALLBACK (mnv_tab_anim_frame_cb), tab);
            g_signal_connect (
                timeline, "completed",
                G_CALLBACK (mnv_tab_anim_complete_cb), tab);
            clutter_timeline_start (timeline);
#endif
        } else {
            priv->inited = TRUE;
            gtk_notebook_set_tab_label (priv->book, (GtkWidget *) priv->current_view,
                        create_tab_label (E_MAIL_NOTEBOOK_VIEW (reader),
                                  priv->current_view,
                                  camel_folder_get_full_name (folder)));

#if HAVE_CLUTTER
            tab = e_mail_tab_picker_get_tab (priv->tab_picker,
                        e_mail_tab_picker_get_current_tab (priv->tab_picker));
            g_object_set_data ((GObject *)tab, "page", priv->current_view);
            g_object_set_data ((GObject *)priv->current_view, "page", tab);
            g_object_set_data ((GObject *)priv->current_view, "tab", tab);

            e_mail_tab_set_text (tab, camel_folder_get_full_name (folder));
            clone = build_histogram ((GtkWidget *) reader, folder);
            clutter_actor_set_reactive (clone, FALSE);
            clutter_actor_show (clone);
            e_mail_tab_set_preview_actor (tab, clone);
#endif
        }

#if HAVE_CLUTTER
        list = e_mail_reader_get_message_list (E_MAIL_READER (priv->current_view));
        g_signal_connect (tab , "closed",
                   G_CALLBACK (mnv_tab_closed), reader);
        g_object_set_data ((GObject *)priv->current_view, "stage", priv->stage);
        g_object_set_data ((GObject *)list, "stage", priv->stage);
        g_object_set_data ((GObject *)list, "actor", priv->actor);

#endif
        e_mail_reader_set_folder (E_MAIL_READER (priv->current_view), folder);

        folder_uri = e_mail_folder_uri_from_folder (folder);
        g_hash_table_insert (priv->views, folder_uri, priv->current_view);
        g_signal_connect (
            priv->current_view, "changed",
            G_CALLBACK (reconnect_changed_event), reader);
        g_signal_connect (
            priv->current_view, "folder-loaded",
            G_CALLBACK (reconnect_folder_loaded_event), reader);
        g_signal_connect (
            priv->current_view, "open-mail",
            G_CALLBACK (mail_netbook_view_open_mail), reader);
    }
}

static void
mail_notebook_view_show_search_bar (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return;

    reader = E_MAIL_READER (priv->current_view);

    e_mail_reader_show_search_bar (reader);
}

static gboolean
mail_notebook_view_enable_show_folder (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (!priv->current_view)
        return FALSE;

    return e_mail_reader_get_enable_show_folder (E_MAIL_READER (priv->current_view));
}

static guint
mail_notebook_view_open_selected_mail (EMailReader *reader)
{
    EMailNotebookViewPrivate *priv;

    priv = E_MAIL_NOTEBOOK_VIEW (reader)->priv;

    if (priv->current_view == NULL)
        return 0;

    reader = E_MAIL_READER (priv->current_view);

    return e_mail_reader_open_selected_mail (reader);
}

static void
e_mail_notebook_view_class_init (EMailNotebookViewClass *class)
{
    GObjectClass *object_class;
    EMailViewClass *mail_view_class;

    g_type_class_add_private (class, sizeof (EMailNotebookViewPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->constructed = mail_notebook_view_constructed;
    object_class->set_property = mail_notebook_view_set_property;
    object_class->get_property = mail_notebook_view_get_property;

    mail_view_class = E_MAIL_VIEW_CLASS (class);
    mail_view_class->set_search_strings = mail_notebook_view_set_search_strings;
    mail_view_class->get_view_instance = mail_notebook_view_get_view_instance;
    mail_view_class->update_view_instance = mail_notebook_view_update_view_instance;
    mail_view_class->set_orientation = mail_notebook_view_set_orientation;
    mail_view_class->get_orientation = mail_notebook_view_get_orientation;
    mail_view_class->get_show_deleted = mail_notebook_view_get_show_deleted;
    mail_view_class->set_show_deleted = mail_notebook_view_set_show_deleted;
    mail_view_class->get_preview_visible = mail_notebook_view_get_preview_visible;
    mail_view_class->set_preview_visible = mail_notebook_view_set_preview_visible;

    /* Inherited from EMailReader */
    g_object_class_override_property (
        object_class,
        PROP_FORWARD_STYLE,
        "forward-style");

    /* Inherited from EMailReader */
    g_object_class_override_property (
        object_class,
        PROP_GROUP_BY_THREADS,
        "group-by-threads");

    /* Inherited from EMailReader */
    g_object_class_override_property (
        object_class,
        PROP_REPLY_STYLE,
        "reply-style");
}

static void
e_mail_notebook_view_reader_init (EMailReaderInterface *interface)
{
    interface->get_action_group = mail_notebook_view_get_action_group;
    interface->get_alert_sink = mail_notebook_view_get_alert_sink;
    interface->get_backend = mail_notebook_view_get_backend;
    interface->get_formatter = mail_notebook_view_get_formatter;
    interface->get_hide_deleted = mail_notebook_view_get_hide_deleted;
    interface->get_message_list = mail_notebook_view_get_message_list;
    interface->get_popup_menu = mail_notebook_view_get_popup_menu;
    interface->get_window = mail_notebook_view_get_window;
    interface->set_folder = mail_notebook_view_set_folder;
    interface->show_search_bar = mail_notebook_view_show_search_bar;
    interface->open_selected_mail = mail_notebook_view_open_selected_mail;
    interface->enable_show_folder = mail_notebook_view_enable_show_folder;
}

static void
e_mail_notebook_view_init (EMailNotebookView *view)
{
    view->priv = G_TYPE_INSTANCE_GET_PRIVATE (
        view, E_TYPE_MAIL_NOTEBOOK_VIEW, EMailNotebookViewPrivate);

    view->priv->inited = FALSE;
    view->priv->views = g_hash_table_new (g_str_hash, g_str_equal);
}

static void
emnv_show_folder (EMailNotebookView *view,
                  gpointer not_used)
{
    gint pos;
    EMailNotebookViewPrivate *priv = view->priv;

    pos = emnv_get_page_num (
        view, (GtkWidget *) E_MAIL_MESSAGE_PANE (
        priv->current_view)->parent_folder_view);

#if HAVE_CLUTTER
    e_mail_tab_picker_set_current_tab (priv->tab_picker, pos);
    mnv_set_current_tab (E_MAIL_NOTEBOOK_VIEW (view), pos);
#else
    gtk_notebook_set_current_page (priv->book, pos);
#endif

}

static void
emnv_show_prevtab (EMailNotebookView *view,
                   gpointer not_used)
{
    gint pos;
    EMailNotebookViewPrivate *priv = view->priv;

    pos = emnv_get_page_num (
        view, (GtkWidget *) E_MAIL_MESSAGE_PANE (
        priv->current_view)->parent_folder_view);

#if HAVE_CLUTTER
    pos = e_mail_tab_picker_get_current_tab (priv->tab_picker);
    if (pos > 0) {
        e_mail_tab_picker_set_current_tab (priv->tab_picker, pos - 1);
        mnv_set_current_tab (E_MAIL_NOTEBOOK_VIEW (view), pos - 1);
    }
#else
    pos = gtk_notebook_get_current_page (priv->book);
    if (pos > 0 )
        gtk_notebook_set_current_page (priv->book, pos - 1);
#endif

}

static void
emnv_show_nexttab (EMailNotebookView *view,
                   gpointer not_used)
{
    gint pos;
    EMailNotebookViewPrivate *priv = view->priv;

#if HAVE_CLUTTER
    pos = e_mail_tab_picker_get_current_tab (priv->tab_picker);

    if (pos < (gtk_notebook_get_n_pages (priv->book) - 1)) {
        e_mail_tab_picker_set_current_tab (priv->tab_picker, pos + 1);
        mnv_set_current_tab (E_MAIL_NOTEBOOK_VIEW (view), pos + 1);
    }
#else
    pos = gtk_notebook_get_current_page (priv->book);
    if (pos < (gtk_notebook_get_n_pages (priv->book) - 1))
        gtk_notebook_set_current_page (priv->book, pos + 1);
#endif

}

static void
emnv_close_tab (EMailNotebookView *view,
                gpointer not_used)
{
    EMailNotebookViewPrivate *priv = view->priv;

#if HAVE_CLUTTER
    mnv_tab_closed (
        g_object_get_data (
            G_OBJECT (priv->current_view), "tab"),
        view);
#else
    tab_remove_gtk_cb (
        g_object_get_data (
            G_OBJECT (priv->current_view), "close-button"),
        view);
#endif

}

GtkWidget *
e_mail_notebook_view_new (EShellView *shell_view)
{
    GtkWidget *widget;

    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    widget = g_object_new (
        E_TYPE_MAIL_NOTEBOOK_VIEW,
        "shell-view", shell_view, NULL);
    g_signal_connect (widget, "show-folder",
            G_CALLBACK (emnv_show_folder), widget);
    g_signal_connect (widget, "show-next-tab",
            G_CALLBACK (emnv_show_nexttab), widget);
    g_signal_connect (widget, "show-previous-tab",
            G_CALLBACK (emnv_show_prevtab), widget);
    g_signal_connect (widget, "close-tab",
            G_CALLBACK (emnv_close_tab), widget);

    return widget;
}