path: root/e-util/e-categories-config.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:
 *      Rodrigo Moya <rodrigo@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "e-categories-config.h"

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

#include "e-categories-dialog.h"
#include "e-misc-utils.h"

static GHashTable *pixbufs_cache = NULL;

static void
categories_changed_cb (gpointer object,
                       gpointer user_data)
{
    if (pixbufs_cache)
        g_hash_table_remove_all (pixbufs_cache);
}

static void
free_pixbuf_cb (gpointer ptr)
{
    GdkPixbuf *pixbuf = ptr;

    if (pixbuf)
        g_object_unref (pixbuf);
}

/**
 * e_categories_config_get_icon_for:
 * @category: Category for which to get the icon.
 * @pixbuf: A pointer to where the pixbuf will be returned.
 *
 * Returns the icon configured for the given category.
 *
 * Returns: the icon configured for the given category
 */
gboolean
e_categories_config_get_icon_for (const gchar *category,
                                  GdkPixbuf **pixbuf)
{
    const gchar *icon_file;

    g_return_val_if_fail (pixbuf != NULL, FALSE);
    g_return_val_if_fail (category != NULL, FALSE);

    if (!pixbufs_cache) {
        pixbufs_cache = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, free_pixbuf_cb);
        e_categories_add_change_hook (
            (GHookFunc) categories_changed_cb, NULL);
    } else {
        gpointer key = NULL, value = NULL;

        if (g_hash_table_lookup_extended (pixbufs_cache, category, &key, &value)) {
            *pixbuf = value;
            if (*pixbuf)
                g_object_ref (*pixbuf);
            return *pixbuf != NULL;
        }
    }

    icon_file = e_categories_get_icon_file_for (category);
    if (!icon_file) {
        *pixbuf = NULL;
    } else {
        /* load the icon in our list */
        *pixbuf = gdk_pixbuf_new_from_file (icon_file, NULL);
    }

    g_hash_table_insert (pixbufs_cache, g_strdup (category), *pixbuf == NULL ? NULL : g_object_ref (*pixbuf));

    return *pixbuf != NULL;
}

/**
 * e_categories_config_open_dialog_for_entry:
 * @entry: a #GtkEntry on which to get/set the categories list
 *
 * This is a self-contained function that lets you open a popup dialog for
 * the user to select a list of categories.
 *
 * The @entry parameter is used, at initialization time, as the list of
 * initial categories that are selected in the categories selection dialog.
 * Then, when the user commits its changes, the list of selected categories
 * is put back on the entry widget.
 */
void
e_categories_config_open_dialog_for_entry (GtkEntry *entry)
{
    GtkDialog *dialog;
    const gchar *text;
    gint result;

    g_return_if_fail (entry != NULL);
    g_return_if_fail (GTK_IS_ENTRY (entry));

    text = gtk_entry_get_text (GTK_ENTRY (entry));
    dialog = GTK_DIALOG (e_categories_dialog_new (text));

    gtk_window_set_transient_for (GTK_WINDOW (dialog), GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (entry))));

    /* run the dialog */
    result = gtk_dialog_run (dialog);

    if (result == GTK_RESPONSE_OK) {
        gchar *categories;

        categories = e_categories_dialog_get_categories (E_CATEGORIES_DIALOG (dialog));
        gtk_entry_set_text (GTK_ENTRY (entry), categories);
        g_free (categories);
    }

    gtk_widget_destroy (GTK_WIDGET (dialog));
}