path: root/mail/em-filter-folder-element.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:
 *      Not Zed <notzed@lostzed.mmc.com.au>
 *      Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <string.h>

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

#include "em-filter-folder-element.h"
#include "mail/em-folder-selection-button.h"
#include "mail/em-utils.h"
#include "shell/e-shell.h"
#include "filter/e-filter-part.h"
#include "libedataserver/e-sexp.h"
#include "e-util/e-alert.h"

#define EM_FILTER_FOLDER_ELEMENT_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), EM_TYPE_FILTER_FOLDER_ELEMENT, EMFilterFolderElementPrivate))

struct _EMFilterFolderElementPrivate {
    EMailBackend *backend;
    gchar *uri;
};

enum {
    PROP_0,
    PROP_BACKEND
};

G_DEFINE_TYPE (
    EMFilterFolderElement,
    em_filter_folder_element,
    E_TYPE_FILTER_ELEMENT)

static void
filter_folder_element_selected_cb (EMFolderSelectionButton *button,
                                   EMFilterFolderElement *ff)
{
    GtkWidget *toplevel;
    const gchar *uri;

    uri = em_folder_selection_button_get_selection (button);

    g_free (ff->priv->uri);
    ff->priv->uri = g_strdup (uri);

    toplevel = gtk_widget_get_toplevel (GTK_WIDGET (button));
    gtk_window_present (GTK_WINDOW (toplevel));
}

static void
filter_folder_element_set_backend (EMFilterFolderElement *element,
                                   EMailBackend *backend)
{
    /* FIXME Dirty hack.  Backend should be passed in always. */
    if (backend == NULL) {
        EShellBackend *shell_backend;
        EShell *shell;

        shell = e_shell_get_default ();
        shell_backend = e_shell_get_backend_by_name (shell, "mail");
        backend = E_MAIL_BACKEND (shell_backend);
    }

    g_return_if_fail (E_IS_MAIL_BACKEND (backend));
    g_return_if_fail (element->priv->backend == NULL);

    element->priv->backend = g_object_ref (backend);
}

static void
filter_folder_element_set_property (GObject *object,
                                    guint property_id,
                                    const GValue *value,
                                    GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_BACKEND:
            filter_folder_element_set_backend (
                EM_FILTER_FOLDER_ELEMENT (object),
                g_value_get_object (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
filter_folder_element_get_property (GObject *object,
                                    guint property_id,
                                    GValue *value,
                                    GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_BACKEND:
            g_value_set_object (
                value,
                em_filter_folder_element_get_backend (
                EM_FILTER_FOLDER_ELEMENT (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
filter_folder_element_dispose (GObject *object)
{
    EMFilterFolderElementPrivate *priv;

    priv = EM_FILTER_FOLDER_ELEMENT_GET_PRIVATE (object);

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

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

static void
filter_folder_element_finalize (GObject *object)
{
    EMFilterFolderElementPrivate *priv;

    priv = EM_FILTER_FOLDER_ELEMENT_GET_PRIVATE (object);

    g_free (priv->uri);

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

static gboolean
filter_folder_element_validate (EFilterElement *fe,
                                EAlert **alert)
{
    EMFilterFolderElement *ff = (EMFilterFolderElement *) fe;

    g_warn_if_fail (alert == NULL || *alert == NULL);

    if (ff->priv->uri != NULL && *ff->priv->uri != '\0')
        return TRUE;

    if (alert)
        *alert = e_alert_new ("mail:no-folder", NULL);

    return FALSE;
}

static gint
filter_folder_element_eq (EFilterElement *fe,
                          EFilterElement *cm)
{
    return E_FILTER_ELEMENT_CLASS (
        em_filter_folder_element_parent_class)->eq (fe, cm) &&
        strcmp (((EMFilterFolderElement *) fe)->priv->uri,
        ((EMFilterFolderElement *) cm)->priv->uri)== 0;
}

static xmlNodePtr
filter_folder_element_xml_encode (EFilterElement *fe)
{
    xmlNodePtr value, work;
    EMFilterFolderElement *ff = (EMFilterFolderElement *) fe;

    value = xmlNewNode (NULL, (xmlChar *) "value");
    xmlSetProp (value, (xmlChar *) "name", (xmlChar *) fe->name);
    xmlSetProp (value, (xmlChar *) "type", (xmlChar *) "folder");

    work = xmlNewChild (value, NULL, (xmlChar *) "folder", NULL);
    xmlSetProp (work, (xmlChar *) "uri", (xmlChar *) ff->priv->uri);

    return value;
}

static gint
filter_folder_element_xml_decode (EFilterElement *fe,
                                  xmlNodePtr node)
{
    EMFilterFolderElement *ff = (EMFilterFolderElement *) fe;
    xmlNodePtr n;

    xmlFree (fe->name);
    fe->name = (gchar *) xmlGetProp(node, (xmlChar *) "name");

    n = node->children;
    while (n) {
        if (!strcmp((gchar *) n->name, "folder")) {
            gchar *uri;

            uri = (gchar *) xmlGetProp(n, (xmlChar *) "uri");
            g_free (ff->priv->uri);
            ff->priv->uri = g_strdup (uri);
            xmlFree (uri);
            break;
        }
        n = n->next;
    }

    return 0;
}

static GtkWidget *
filter_folder_element_get_widget (EFilterElement *fe)
{
    EMFilterFolderElement *ff = (EMFilterFolderElement *) fe;
    EMailBackend *backend;
    GtkWidget *button;

    backend = em_filter_folder_element_get_backend (ff);

    button = em_folder_selection_button_new (
        backend, _("Select Folder"), NULL);
    em_folder_selection_button_set_selection (
        EM_FOLDER_SELECTION_BUTTON (button), ff->priv->uri);
    gtk_widget_show (button);

    g_signal_connect (
        button, "selected",
        G_CALLBACK (filter_folder_element_selected_cb), ff);

    return button;
}

static void
filter_folder_element_build_code (EFilterElement *fe,
                                  GString *out,
                                  EFilterPart *ff)
{
    /* We are doing nothing on purpose. */
}

static void
filter_folder_element_format_sexp (EFilterElement *fe,
                                   GString *out)
{
    EMFilterFolderElement *ff = (EMFilterFolderElement *) fe;

    e_sexp_encode_string (out, ff->priv->uri);
}

static void
filter_folder_element_copy_value (EFilterElement *de,
                                  EFilterElement *se)
{
    if (EM_IS_FILTER_FOLDER_ELEMENT (se)) {
        em_filter_folder_element_set_uri (
            EM_FILTER_FOLDER_ELEMENT (de),
            EM_FILTER_FOLDER_ELEMENT (se)->priv->uri);
    } else {
        E_FILTER_ELEMENT_CLASS (
        em_filter_folder_element_parent_class)->copy_value (de, se);
    }
}
static void
em_filter_folder_element_class_init (EMFilterFolderElementClass *class)
{
    GObjectClass *object_class;
    EFilterElementClass *filter_element_class;

    g_type_class_add_private (class, sizeof (EMFilterFolderElementPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = filter_folder_element_set_property;
    object_class->get_property = filter_folder_element_get_property;
    object_class->dispose = filter_folder_element_dispose;
    object_class->finalize = filter_folder_element_finalize;

    filter_element_class = E_FILTER_ELEMENT_CLASS (class);
    filter_element_class->validate = filter_folder_element_validate;
    filter_element_class->eq = filter_folder_element_eq;
    filter_element_class->xml_encode = filter_folder_element_xml_encode;
    filter_element_class->xml_decode = filter_folder_element_xml_decode;
    filter_element_class->get_widget = filter_folder_element_get_widget;
    filter_element_class->build_code = filter_folder_element_build_code;
    filter_element_class->format_sexp = filter_folder_element_format_sexp;
    filter_element_class->copy_value = filter_folder_element_copy_value;

    g_object_class_install_property (
        object_class,
        PROP_BACKEND,
        g_param_spec_object (
            "backend",
            NULL,
            NULL,
            E_TYPE_MAIL_BACKEND,
            G_PARAM_READWRITE |
            G_PARAM_CONSTRUCT_ONLY));
}

static void
em_filter_folder_element_init (EMFilterFolderElement *element)
{
    element->priv = EM_FILTER_FOLDER_ELEMENT_GET_PRIVATE (element);
}

EFilterElement *
em_filter_folder_element_new (EMailBackend *backend)
{
    g_return_val_if_fail (E_IS_MAIL_BACKEND (backend), NULL);

    return g_object_new (
        EM_TYPE_FILTER_FOLDER_ELEMENT,
        "backend", backend, NULL);
}

EMailBackend *
em_filter_folder_element_get_backend (EMFilterFolderElement *element)
{
    g_return_val_if_fail (EM_IS_FILTER_FOLDER_ELEMENT (element), NULL);

    return element->priv->backend;
}

const gchar *
em_filter_folder_element_get_uri (EMFilterFolderElement *element)
{
    g_return_val_if_fail (EM_IS_FILTER_FOLDER_ELEMENT (element), NULL);

    return element->priv->uri;
}

void
em_filter_folder_element_set_uri (EMFilterFolderElement *element,
                                  const gchar *uri)
{
    g_return_if_fail (EM_IS_FILTER_FOLDER_ELEMENT (element));

    g_free (element->priv->uri);
    element->priv->uri = g_strdup (uri);
}