path: root/mail/e-mail-attachment-bar.c

/*
 * e-mail-attachment-bar.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/>
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include "e-mail-attachment-bar.h"

#include <glib/gi18n.h>

#include "e-util/e-binding.h"
#include "e-util/gconf-bridge.h"

#include "e-attachment-store.h"
#include "e-attachment-icon-view.h"
#include "e-attachment-tree-view.h"

#define E_MAIL_ATTACHMENT_BAR_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_MAIL_ATTACHMENT_BAR, EMailAttachmentBarPrivate))

#define NUM_VIEWS 2

struct _EMailAttachmentBarPrivate {
    GtkTreeModel *model;
    GtkWidget *vbox;
    GtkWidget *expander;
    GtkWidget *combo_box;
    GtkWidget *icon_view;
    GtkWidget *tree_view;
    GtkWidget *icon_frame;
    GtkWidget *tree_frame;
    GtkWidget *status_icon;
    GtkWidget *status_label;
    GtkWidget *save_all_button;
    GtkWidget *save_one_button;

    gint active_view;
    guint expanded : 1;
};

enum {
    PROP_0,
    PROP_ACTIVE_VIEW,
    PROP_EDITABLE,
    PROP_EXPANDED
};

static gpointer parent_class;

static void
mail_attachment_bar_sync_icon_view (EMailAttachmentBar *bar)
{
    EAttachmentView *source;
    EAttachmentView *target;

    source = E_ATTACHMENT_VIEW (bar->priv->tree_view);
    target = E_ATTACHMENT_VIEW (bar->priv->icon_view);

    /* Only sync if the tree view is active.  This prevents the
     * two views from endlessly trying to sync with each other. */
    if (e_mail_attachment_bar_get_active_view (bar) == 1)
        e_attachment_view_sync_selection (source, target);
}

static void
mail_attachment_bar_sync_tree_view (EMailAttachmentBar *bar)
{
    EAttachmentView *source;
    EAttachmentView *target;

    source = E_ATTACHMENT_VIEW (bar->priv->icon_view);
    target = E_ATTACHMENT_VIEW (bar->priv->tree_view);

    /* Only sync if the icon view is active.  This prevents the
     * two views from endlessly trying to sync with each other. */
    if (e_mail_attachment_bar_get_active_view (bar) == 0)
        e_attachment_view_sync_selection (source, target);
}

static void
mail_attachment_bar_update_status (EMailAttachmentBar *bar)
{
    EAttachmentView *view;
    EAttachmentStore *store;
    GtkActivatable *activatable;
    GtkAction *action;
    GtkLabel *label;
    gint num_attachments;
    guint64 total_size;
    gchar *display_size;
    gchar *markup;

    view = E_ATTACHMENT_VIEW (bar);
    store = e_attachment_view_get_store (view);
    label = GTK_LABEL (bar->priv->status_label);

    num_attachments = e_attachment_store_get_num_attachments (store);
    total_size = e_attachment_store_get_total_size (store);
    display_size = g_format_size_for_display (total_size);

    if (total_size > 0)
        markup = g_strdup_printf (
            "<b>%d</b> %s (%s)", num_attachments, ngettext (
            "Attachment", "Attachments", num_attachments),
            display_size);
    else
        markup = g_strdup_printf (
            "<b>%d</b> %s", num_attachments, ngettext (
            "Attachment", "Attachments", num_attachments));
    gtk_label_set_markup (label, markup);
    g_free (markup);

    activatable = GTK_ACTIVATABLE (bar->priv->save_all_button);
    action = gtk_activatable_get_related_action (activatable);
    gtk_action_set_visible (action, (num_attachments > 1));

    activatable = GTK_ACTIVATABLE (bar->priv->save_one_button);
    action = gtk_activatable_get_related_action (activatable);
    gtk_action_set_visible (action, (num_attachments == 1));

    g_free (display_size);
}

static void
mail_attachment_bar_set_property (GObject *object,
                                  guint property_id,
                                  const GValue *value,
                                  GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTIVE_VIEW:
            e_mail_attachment_bar_set_active_view (
                E_MAIL_ATTACHMENT_BAR (object),
                g_value_get_int (value));
            return;

        case PROP_EDITABLE:
            e_attachment_view_set_editable (
                E_ATTACHMENT_VIEW (object),
                g_value_get_boolean (value));
            return;

        case PROP_EXPANDED:
            e_mail_attachment_bar_set_expanded (
                E_MAIL_ATTACHMENT_BAR (object),
                g_value_get_boolean (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_attachment_bar_get_property (GObject *object,
                                  guint property_id,
                                  GValue *value,
                                  GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_ACTIVE_VIEW:
            g_value_set_int (
                value,
                e_mail_attachment_bar_get_active_view (
                E_MAIL_ATTACHMENT_BAR (object)));
            return;

        case PROP_EDITABLE:
            g_value_set_boolean (
                value,
                e_attachment_view_get_editable (
                E_ATTACHMENT_VIEW (object)));
            return;

        case PROP_EXPANDED:
            g_value_set_boolean (
                value,
                e_mail_attachment_bar_get_expanded (
                E_MAIL_ATTACHMENT_BAR (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_attachment_bar_dispose (GObject *object)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (object);

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

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

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

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

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

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

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

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

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

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

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

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

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

static void
mail_attachment_bar_constructed (GObject *object)
{
    EMailAttachmentBarPrivate *priv;
    GConfBridge *bridge;
    const gchar *key;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (object);

    bridge = gconf_bridge_get ();

    /* Set up property-to-property bindings. */

    e_mutual_binding_new (
        object, "active-view",
        priv->combo_box, "active");

    e_mutual_binding_new (
        object, "editable",
        priv->icon_view, "editable");

    e_mutual_binding_new (
        object, "editable",
        priv->tree_view, "editable");

    e_mutual_binding_new (
        object, "expanded",
        priv->expander, "expanded");

    e_mutual_binding_new (
        object, "expanded",
        priv->combo_box, "visible");

    e_mutual_binding_new (
        object, "expanded",
        priv->vbox, "visible");

    /* Set up property-to-GConf bindings. */

    key = "/apps/evolution/shell/attachment_view";
    gconf_bridge_bind_property (bridge, key, object, "active-view");
}

static void
mail_attachment_bar_size_request (GtkWidget *widget,
                                  GtkRequisition *requisition)
{
    /* XXX This works around GtkHTMLEmbedded not taking visibility
     *     into account when calculating its size (at least I think
     *     that's where it's broken).  Without the workaround, we
     *     get a sizable gap between the headers and body when this
     *     widget is invisible.  Once we finally move to WebKit,
     *     remove this. */
    if (!GTK_WIDGET_VISIBLE (widget)) {
        requisition->width = 0;
        requisition->height = 0;
        return;
    }

    /* Chain up to parent's size_request() method. */
    GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
}

static EAttachmentViewPrivate *
mail_attachment_bar_get_private (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    return e_attachment_view_get_private (view);
}

static EAttachmentStore *
mail_attachment_bar_get_store (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    return e_attachment_view_get_store (view);
}

static GtkTreePath *
mail_attachment_bar_get_path_at_pos (EAttachmentView *view,
                                     gint x,
                                     gint y)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    return e_attachment_view_get_path_at_pos (view, x, y);
}

static GList *
mail_attachment_bar_get_selected_paths (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    return e_attachment_view_get_selected_paths (view);
}

static gboolean
mail_attachment_bar_path_is_selected (EAttachmentView *view,
                                      GtkTreePath *path)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    return e_attachment_view_path_is_selected (view, path);
}

static void
mail_attachment_bar_select_path (EAttachmentView *view,
                                 GtkTreePath *path)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    e_attachment_view_select_path (view, path);
}

static void
mail_attachment_bar_unselect_path (EAttachmentView *view,
                                   GtkTreePath *path)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    e_attachment_view_unselect_path (view, path);
}

static void
mail_attachment_bar_select_all (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    e_attachment_view_select_all (view);
}

static void
mail_attachment_bar_unselect_all (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    e_attachment_view_unselect_all (view);
}

static void
mail_attachment_bar_update_actions (EAttachmentView *view)
{
    EMailAttachmentBarPrivate *priv;

    priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (view);
    view = E_ATTACHMENT_VIEW (priv->icon_view);

    e_attachment_view_update_actions (view);
}

static void
mail_attachment_bar_class_init (EMailAttachmentBarClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;

    parent_class = g_type_class_peek_parent (class);
    g_type_class_add_private (class, sizeof (EMailAttachmentBarPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = mail_attachment_bar_set_property;
    object_class->get_property = mail_attachment_bar_get_property;
    object_class->dispose = mail_attachment_bar_dispose;
    object_class->constructed = mail_attachment_bar_constructed;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->size_request = mail_attachment_bar_size_request;

    g_object_class_install_property (
        object_class,
        PROP_ACTIVE_VIEW,
        g_param_spec_int (
            "active-view",
            "Active View",
            NULL,
            0,
            NUM_VIEWS,
            0,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT));

    g_object_class_install_property (
        object_class,
        PROP_EXPANDED,
        g_param_spec_boolean (
            "expanded",
            "Expanded",
            NULL,
            FALSE,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT));

    g_object_class_override_property (
        object_class, PROP_EDITABLE, "editable");
}

static void
mail_attachment_bar_iface_init (EAttachmentViewIface *iface)
{
    iface->get_private = mail_attachment_bar_get_private;
    iface->get_store = mail_attachment_bar_get_store;
    iface->get_path_at_pos = mail_attachment_bar_get_path_at_pos;
    iface->get_selected_paths = mail_attachment_bar_get_selected_paths;
    iface->path_is_selected = mail_attachment_bar_path_is_selected;
    iface->select_path = mail_attachment_bar_select_path;
    iface->unselect_path = mail_attachment_bar_unselect_path;
    iface->select_all = mail_attachment_bar_select_all;
    iface->unselect_all = mail_attachment_bar_unselect_all;
    iface->update_actions = mail_attachment_bar_update_actions;
}

static void
mail_attachment_bar_init (EMailAttachmentBar *bar)
{
    EAttachmentView *view;
    GtkTreeSelection *selection;
    GtkSizeGroup *size_group;
    GtkWidget *container;
    GtkWidget *widget;
    GtkAction *action;

    bar->priv = E_MAIL_ATTACHMENT_BAR_GET_PRIVATE (bar);
    bar->priv->model = e_attachment_store_new ();

    gtk_box_set_spacing (GTK_BOX (bar), 6);

    /* Keep the expander label and save button the same height. */
    size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);

    /* Construct the Attachment Views */

    container = GTK_WIDGET (bar);

    widget = gtk_vbox_new (FALSE, 0);
    gtk_box_pack_end (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->vbox = g_object_ref (widget);
    gtk_widget_show (widget);

    container = bar->priv->vbox;

    widget = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (widget), GTK_SHADOW_IN);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    bar->priv->icon_frame = g_object_ref (widget);
    gtk_widget_show (widget);

    container = widget;

    widget = e_attachment_icon_view_new ();
    GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
    gtk_icon_view_set_model (GTK_ICON_VIEW (widget), bar->priv->model);
    gtk_container_add (GTK_CONTAINER (container), widget);
    bar->priv->icon_view = g_object_ref (widget);
    gtk_widget_show (widget);

    container = bar->priv->vbox;

    widget = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (widget), GTK_SHADOW_IN);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    bar->priv->tree_frame = g_object_ref (widget);
    gtk_widget_show (widget);

    container = widget;

    widget = e_attachment_tree_view_new ();
    GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
    gtk_tree_view_set_model (GTK_TREE_VIEW (widget), bar->priv->model);
    gtk_container_add (GTK_CONTAINER (container), widget);
    bar->priv->tree_view = g_object_ref (widget);
    gtk_widget_show (widget);

    /* Construct the Controls */

    container = GTK_WIDGET (bar);

    widget = gtk_hbox_new (FALSE, 12);
    gtk_box_pack_end (GTK_BOX (container), widget, FALSE, FALSE, 0);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_expander_new (NULL);
    gtk_expander_set_spacing (GTK_EXPANDER (widget), 0);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->expander = g_object_ref (widget);
    gtk_widget_show (widget);

    /* The "Save All" button proxies the "save-all" action from
     * one of the two attachment views.  Doesn't matter which. */
    widget = gtk_button_new ();
    view = E_ATTACHMENT_VIEW (bar->priv->icon_view);
    action = e_attachment_view_get_action (view, "save-all");
    gtk_button_set_image (GTK_BUTTON (widget), gtk_image_new ());
    gtk_activatable_set_related_action (GTK_ACTIVATABLE (widget), action);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->save_all_button = g_object_ref (widget);
    gtk_widget_show (widget);

    /* Same deal with the "Save" button. */
    widget = gtk_button_new ();
    view = E_ATTACHMENT_VIEW (bar->priv->icon_view);
    action = e_attachment_view_get_action (view, "save-one");
    gtk_button_set_image (GTK_BUTTON (widget), gtk_image_new ());
    gtk_activatable_set_related_action (GTK_ACTIVATABLE (widget), action);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->save_one_button = g_object_ref (widget);
    gtk_widget_show (widget);

    widget = gtk_alignment_new (1.0, 0.5, 0.0, 0.0);
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_combo_box_new_text ();
    gtk_size_group_add_widget (size_group, widget);
    gtk_combo_box_append_text (GTK_COMBO_BOX (widget), _("Icon View"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (widget), _("List View"));
    gtk_container_add (GTK_CONTAINER (container), widget);
    bar->priv->combo_box = g_object_ref (widget);
    gtk_widget_show (widget);

    container = bar->priv->expander;

    widget = gtk_hbox_new (FALSE, 6);
    gtk_size_group_add_widget (size_group, widget);
    gtk_expander_set_label_widget (GTK_EXPANDER (container), widget);
    gtk_widget_show (widget);

    container = widget;

    widget = gtk_image_new_from_icon_name (
        "mail-attachment", GTK_ICON_SIZE_MENU);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->status_icon = g_object_ref (widget);
    gtk_widget_show (widget);

    widget = gtk_label_new (NULL);
    gtk_label_set_use_markup (GTK_LABEL (widget), TRUE);
    gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
    bar->priv->status_label = g_object_ref (widget);
    gtk_widget_show (widget);

    selection = gtk_tree_view_get_selection (
        GTK_TREE_VIEW (bar->priv->tree_view));

    g_signal_connect_swapped (
        selection, "changed",
        G_CALLBACK (mail_attachment_bar_sync_icon_view), bar);

    g_signal_connect_swapped (
        bar->priv->icon_view, "selection-changed",
        G_CALLBACK (mail_attachment_bar_sync_tree_view), bar);

    g_signal_connect_swapped (
        bar->priv->model, "notify::num-attachments",
        G_CALLBACK (mail_attachment_bar_update_status), bar);

    g_signal_connect_swapped (
        bar->priv->model, "notify::total-size",
        G_CALLBACK (mail_attachment_bar_update_status), bar);

    g_object_unref (size_group);
}

GType
e_mail_attachment_bar_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0)) {
        static const GTypeInfo type_info = {
            sizeof (EMailAttachmentBarClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) mail_attachment_bar_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,  /* class_data */
            sizeof (EMailAttachmentBar),
            0,     /* n_preallocs */
            (GInstanceInitFunc) mail_attachment_bar_init,
            NULL   /* value_table */
        };

        static const GInterfaceInfo iface_info = {
            (GInterfaceInitFunc) mail_attachment_bar_iface_init,
            (GInterfaceFinalizeFunc) NULL,
            NULL   /* interface_data */
        };

        type = g_type_register_static (
            GTK_TYPE_VBOX, "EMailAttachmentBar", &type_info, 0);

        g_type_add_interface_static (
            type, E_TYPE_ATTACHMENT_VIEW, &iface_info);
    }

    return type;
}

GtkWidget *
e_mail_attachment_bar_new (void)
{
    return g_object_new (
        E_TYPE_MAIL_ATTACHMENT_BAR,
        "editable", FALSE, NULL);
}

gint
e_mail_attachment_bar_get_active_view (EMailAttachmentBar *bar)
{
    g_return_val_if_fail (E_IS_MAIL_ATTACHMENT_BAR (bar), 0);

    return bar->priv->active_view;
}

void
e_mail_attachment_bar_set_active_view (EMailAttachmentBar *bar,
                                       gint active_view)
{
    g_return_if_fail (E_IS_MAIL_ATTACHMENT_BAR (bar));
    g_return_if_fail (active_view >= 0 && active_view < NUM_VIEWS);

    bar->priv->active_view = active_view;

    if (active_view == 0) {
        gtk_widget_show (bar->priv->icon_frame);
        gtk_widget_hide (bar->priv->tree_frame);
    } else {
        gtk_widget_hide (bar->priv->icon_frame);
        gtk_widget_show (bar->priv->tree_frame);
    }

    g_object_notify (G_OBJECT (bar), "active-view");
}

gboolean
e_mail_attachment_bar_get_expanded (EMailAttachmentBar *bar)
{
    g_return_val_if_fail (E_IS_MAIL_ATTACHMENT_BAR (bar), FALSE);

    return bar->priv->expanded;
}

void
e_mail_attachment_bar_set_expanded (EMailAttachmentBar *bar,
                                    gboolean expanded)
{
    g_return_if_fail (E_IS_MAIL_ATTACHMENT_BAR (bar));

    bar->priv->expanded = expanded;

    g_object_notify (G_OBJECT (bar), "expanded");
}