path: root/src/bookmarks/ephy-topics-selector.c

/*
 *  Copyright (C) 2002-2004 Marco Pesenti Gritti <mpeseng@tin.it>
 *
 *  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.
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-topics-selector.h"
#include "ephy-debug.h"

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

static void ephy_topics_selector_class_init (EphyTopicsSelectorClass *klass);
static void ephy_topics_selector_init (EphyTopicsSelector *editor);

#define EPHY_TOPICS_SELECTOR_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_TOPICS_SELECTOR, EphyTopicsSelectorPrivate))

struct _EphyTopicsSelectorPrivate
{
    EphyBookmarks *bookmarks;
    EphyNode *bookmark;
    EphyNodeFilter *filter;
    GList *topics;
};

enum
{
    PROP_0,
    PROP_BOOKMARKS,
    PROP_BOOKMARK
};

static GObjectClass *parent_class = NULL;

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

    if (G_UNLIKELY (type == 0))
    {
        static const GTypeInfo our_info =
        {
            sizeof (EphyTopicsSelectorClass),
            NULL,
            NULL,
            (GClassInitFunc) ephy_topics_selector_class_init,
            NULL,
            NULL,
            sizeof (EphyTopicsSelector),
            0,
            (GInstanceInitFunc) ephy_topics_selector_init
        };

        type = g_type_register_static (EPHY_TYPE_NODE_VIEW,
                           "EphyTopicsSelector",
                           &our_info, 0);
    }

    return type;
}

static void
ephy_topics_selector_set_bookmark (EphyTopicsSelector *selector,
                   EphyNode *bookmark)
{
    LOG ("Set bookmark");

    selector->priv->bookmark = bookmark;

    g_object_notify (G_OBJECT (selector), "bookmark");
}

static void
ephy_topics_selector_set_bookmarks (EphyTopicsSelector *selector,
                    EphyBookmarks *bookmarks)
{
    selector->priv->bookmarks = bookmarks;
}

static void
ephy_topics_selector_set_property (GObject *object,
                           guint prop_id,
                           const GValue *value,
                           GParamSpec *pspec)
{
    EphyTopicsSelector *selector = EPHY_TOPICS_SELECTOR (object);

    switch (prop_id)
    {
    case PROP_BOOKMARKS:
        ephy_topics_selector_set_bookmarks
            (selector, g_value_get_object (value));
        break;
    case PROP_BOOKMARK:
        ephy_topics_selector_set_bookmark
            (selector, g_value_get_pointer (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
ephy_topics_selector_get_property (GObject *object,
                           guint prop_id,
                           GValue *value,
                           GParamSpec *pspec)
{
    EphyTopicsSelector *selector = EPHY_TOPICS_SELECTOR (object);

    switch (prop_id)
    {
    case PROP_BOOKMARK:
        g_value_set_pointer (value, selector);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

void
ephy_topics_selector_apply (EphyTopicsSelector *selector,
                EphyNode *bookmark)
{
    GList *l;

    for (l = selector->priv->topics; l != NULL; l = l->next)
    {
        EphyNode *node = l->data;

        ephy_bookmarks_set_keyword (selector->priv->bookmarks,
                        node, bookmark);
    }
}

static void
provide_toggle (EphyNode *node,
        GValue *value,
        gpointer data)
{
    EphyTopicsSelector *selector = EPHY_TOPICS_SELECTOR (data);
    gboolean result = FALSE;

    g_value_init (value, G_TYPE_BOOLEAN);

    if (selector->priv->bookmark)
    {
        result = ephy_node_has_child (node, selector->priv->bookmark);
    }
    else
    {
        result = (g_list_find (selector->priv->topics, node) != NULL);
    }

    g_value_set_boolean (value, result);
}

static GObject *
ephy_topics_selector_constructor (GType type,
                  guint n_construct_properties,
                                  GObjectConstructParam *construct_params)

{
    GObject *object;
    EphyTopicsSelector *selector;
    EphyTopicsSelectorPrivate *priv;
    GtkTreeSelection *selection;

    object = parent_class->constructor (type, n_construct_properties,
                                            construct_params);
    selector = EPHY_TOPICS_SELECTOR (object);
    priv = EPHY_TOPICS_SELECTOR_GET_PRIVATE (object);

    gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (selector), FALSE);

    ephy_node_view_add_toggle (EPHY_NODE_VIEW (selector),
                   provide_toggle, selector);
    ephy_node_view_add_column (EPHY_NODE_VIEW (selector), _("Topics"),
                   G_TYPE_STRING,
                   EPHY_NODE_KEYWORD_PROP_NAME,
                   EPHY_NODE_VIEW_SHOW_PRIORITY |
                   EPHY_NODE_VIEW_EDITABLE |
                   EPHY_NODE_VIEW_SEARCHABLE, NULL, NULL);
    ephy_node_view_set_sort (EPHY_NODE_VIEW (selector), G_TYPE_STRING,
                 EPHY_NODE_KEYWORD_PROP_NAME, GTK_SORT_ASCENDING);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (selector));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);

    return object;
}

static void
topic_destroy_cb (EphyNode *node,
          EphyTopicsSelector *selector)
{
    selector->priv->topics = g_list_remove
                (selector->priv->topics, node);
}

static void
toggle_topic (EphyTopicsSelector *selector, EphyNode *node, gboolean checked)
{
    if (selector->priv->bookmark)
    {
        if (checked)
        {
            ephy_bookmarks_set_keyword (selector->priv->bookmarks,
                            node,
                            selector->priv->bookmark);
        }
        else
        {
            ephy_bookmarks_unset_keyword (selector->priv->bookmarks,
                              node,
                              selector->priv->bookmark);
        }
    }
    else
    {
        if (checked)
        {
            selector->priv->topics = g_list_prepend
                    (selector->priv->topics, node);
            ephy_node_signal_connect_object (node, EPHY_NODE_DESTROY,
                             (EphyNodeCallback) topic_destroy_cb,
                             G_OBJECT (selector));
        }
        else
        {
            selector->priv->topics = g_list_remove
                    (selector->priv->topics, node);
        }
    }
}

static void
node_toggled_cb (EphyTopicsSelector *selector, EphyNode *node,
         gboolean checked, gpointer data)
{
    toggle_topic (selector, node, checked);
}

static void
ephy_topics_selector_init (EphyTopicsSelector *selector)
{
    selector->priv = EPHY_TOPICS_SELECTOR_GET_PRIVATE (selector);

    selector->priv->filter = ephy_node_filter_new ();
    ephy_node_filter_add_expression (selector->priv->filter,
                         ephy_node_filter_expression_new (EPHY_NODE_FILTER_EXPRESSION_INT_PROP_EQUALS,
                                          EPHY_NODE_KEYWORD_PROP_PRIORITY,
                                      EPHY_NODE_VIEW_NORMAL_PRIORITY),
                         0);
    g_object_set (selector, "filter", selector->priv->filter, NULL);

    g_signal_connect (selector, "node_toggled",
              G_CALLBACK (node_toggled_cb), NULL);
}

static void
ephy_topics_selector_finalize (GObject *object)
{
    EphyTopicsSelector *selector = EPHY_TOPICS_SELECTOR (object);

    g_list_free (selector->priv->topics);

    g_object_unref (selector->priv->filter);

    parent_class->finalize (object);
}

GtkWidget *
ephy_topics_selector_new (EphyBookmarks *bookmarks,
              EphyNode *bookmark)
{
    EphyTopicsSelector *editor;
    EphyNode *root;

    g_assert (bookmarks != NULL);

    root = ephy_bookmarks_get_keywords (bookmarks);
    editor = EPHY_TOPICS_SELECTOR (g_object_new
            (EPHY_TYPE_TOPICS_SELECTOR,
             "bookmarks", bookmarks,
             "bookmark", bookmark,
             "root", root,
             NULL));

    return GTK_WIDGET (editor);
}

void
ephy_topics_selector_new_topic (EphyTopicsSelector *selector)
{
    EphyNode *node;

    node = ephy_bookmarks_add_keyword
            (selector->priv->bookmarks, _("Type a topic"));
    toggle_topic (selector, node, TRUE);
    ephy_node_view_select_node (EPHY_NODE_VIEW (selector), node);
    ephy_node_view_edit (EPHY_NODE_VIEW (selector), TRUE);
}

static void
ephy_topics_selector_class_init (EphyTopicsSelectorClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    object_class->set_property = ephy_topics_selector_set_property;
    object_class->get_property = ephy_topics_selector_get_property;
    object_class->constructor = ephy_topics_selector_constructor;
    object_class->finalize = ephy_topics_selector_finalize;

    g_object_class_install_property (object_class,
                     PROP_BOOKMARKS,
                     g_param_spec_object ("bookmarks",
                                  "Bookmarks set",
                                  "Bookmarks set",
                                  EPHY_TYPE_BOOKMARKS,
                                  G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (object_class,
                     PROP_BOOKMARK,
                     g_param_spec_pointer ("bookmark",
                                   "Bookmark",
                                   "Bookmark",
                                   G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_CONSTRUCT_ONLY));

    g_type_class_add_private (object_class, sizeof(EphyTopicsSelectorPrivate));
}