path: root/mail/em-filter-source-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:
 *      Jon Trowbridge <trow@ximian.com>
 *      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 "em-filter-source-element.h"

#include <gtk/gtk.h>
#include <libedataserver/e-sexp.h>
#include <libedataserver/e-account-list.h>
#include <camel/camel-url.h>

static void em_filter_source_element_class_init(EMFilterSourceElementClass *klass);
static void em_filter_source_element_init(EMFilterSourceElement *fs);
static void em_filter_source_element_finalize(GObject *obj);

static gint source_eq(FilterElement *fe, FilterElement *cm);
static void xml_create(FilterElement *fe, xmlNodePtr node);
static xmlNodePtr xml_encode(FilterElement *fe);
static gint xml_decode(FilterElement *fe, xmlNodePtr node);
static FilterElement *clone(FilterElement *fe);
static GtkWidget *get_widget(FilterElement *fe);
static void build_code(FilterElement *fe, GString *out, struct _FilterPart *ff);
static void format_sexp(FilterElement *, GString *);

static void em_filter_source_element_add_source (EMFilterSourceElement *fs, const gchar *account_name, const gchar *name,
                       const gchar *addr, const gchar *url);
static void em_filter_source_element_get_sources(EMFilterSourceElement *fs);

typedef struct _SourceInfo {
    gchar *account_name;
    gchar *name;
    gchar *address;
    gchar *url;
} SourceInfo;

struct _EMFilterSourceElementPrivate {
    GList *sources;
    gchar *current_url;
};

static FilterElementClass *parent_class = NULL;

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

    if (!type) {
        static const GTypeInfo info = {
            sizeof(EMFilterSourceElementClass),
            NULL, /* base_class_init */
            NULL, /* base_class_finalize */
            (GClassInitFunc)em_filter_source_element_class_init,
            NULL, /* class_finalize */
            NULL, /* class_data */
            sizeof(EMFilterSourceElement),
            0,    /* n_preallocs */
            (GInstanceInitFunc)em_filter_source_element_init,
        };

        type = g_type_register_static(FILTER_TYPE_ELEMENT, "EMFilterSourceElement", &info, 0);
    }

    return type;
}

static void
em_filter_source_element_class_init(EMFilterSourceElementClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS(klass);
    FilterElementClass *fe_class = FILTER_ELEMENT_CLASS(klass);

    parent_class = g_type_class_ref(FILTER_TYPE_ELEMENT);

    object_class->finalize = em_filter_source_element_finalize;

    /* override methods */
    fe_class->eq = source_eq;
    fe_class->xml_create = xml_create;
    fe_class->xml_encode = xml_encode;
    fe_class->xml_decode = xml_decode;
    fe_class->clone = clone;
    fe_class->get_widget = get_widget;
    fe_class->build_code = build_code;
    fe_class->format_sexp = format_sexp;
}

static void
em_filter_source_element_init(EMFilterSourceElement *fs)
{
    fs->priv = g_new(struct _EMFilterSourceElementPrivate, 1);
    fs->priv->sources = NULL;
    fs->priv->current_url = NULL;
}

static void
em_filter_source_element_finalize(GObject *obj)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)obj;
    GList *i = fs->priv->sources;

    while (i) {
        SourceInfo *info = i->data;
        g_free(info->account_name);
        g_free(info->name);
        g_free(info->address);
        g_free(info->url);
        g_free(info);
        i = g_list_next(i);
    }

    g_list_free(fs->priv->sources);
    g_free(fs->priv->current_url);

    g_free(fs->priv);

    G_OBJECT_CLASS(parent_class)->finalize(obj);
}

EMFilterSourceElement *
em_filter_source_element_new(void)
{
    return (EMFilterSourceElement *)g_object_new(em_filter_source_element_get_type(), NULL, NULL);
}

static gint
source_eq(FilterElement *fe, FilterElement *cm)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe, *cs = (EMFilterSourceElement *)cm;

    return FILTER_ELEMENT_CLASS(parent_class)->eq(fe, cm)
        &&((fs->priv->current_url && cs->priv->current_url
             && strcmp(fs->priv->current_url, cs->priv->current_url)== 0)
            ||(fs->priv->current_url == NULL && cs->priv->current_url == NULL));
}

static void
xml_create(FilterElement *fe, xmlNodePtr node)
{
    /* Call parent implementation */
    FILTER_ELEMENT_CLASS(parent_class)->xml_create(fe, node);
}

static xmlNodePtr
xml_encode(FilterElement *fe)
{
    xmlNodePtr value;

    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe;

    value = xmlNewNode(NULL, (const guchar *)"value");
    xmlSetProp(value, (const guchar *)"name", (guchar *)fe->name);
    xmlSetProp(value, (const guchar *)"type", (const guchar *)"uri");

    if (fs->priv->current_url)
        xmlNewTextChild(value, NULL, (const guchar *)"uri", (guchar *)fs->priv->current_url);

    return value;
}

static gint
xml_decode(FilterElement *fe, xmlNodePtr node)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe;
    CamelURL *url;
    gchar *uri;

    node = node->children;
    while (node != NULL) {
        if (!strcmp((gchar *)node->name, "uri")) {
            uri = (gchar *)xmlNodeGetContent(node);
            url = camel_url_new(uri, NULL);
            xmlFree(uri);

            g_free(fs->priv->current_url);
            fs->priv->current_url = camel_url_to_string(url, CAMEL_URL_HIDE_ALL);
            camel_url_free(url);
            break;
        }

        node = node->next;
    }

    return 0;
}

static FilterElement *
clone(FilterElement *fe)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe;
    EMFilterSourceElement *cpy = em_filter_source_element_new();
    GList *i;

    ((FilterElement *)cpy)->name = (gchar *)xmlStrdup((guchar *)fe->name);

    cpy->priv->current_url = g_strdup(fs->priv->current_url);

    for (i = fs->priv->sources; i != NULL; i = g_list_next(i)) {
        SourceInfo *info = (SourceInfo *)i->data;
        em_filter_source_element_add_source(cpy, info->account_name, info->name, info->address, info->url);
    }

    return (FilterElement *)cpy;
}

static void
source_changed(GtkComboBox *combobox, EMFilterSourceElement *fs)
{
    SourceInfo *info;
    gint idx;

    idx = gtk_combo_box_get_active (combobox);
    g_return_if_fail (idx >= 0 && idx < g_list_length (fs->priv->sources));

    info = (SourceInfo *) g_list_nth_data (fs->priv->sources, idx);
    g_return_if_fail (info != NULL);

    g_free (fs->priv->current_url);
    fs->priv->current_url = g_strdup (info->url);
}

static GtkWidget *
get_widget(FilterElement *fe)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe;
    GtkWidget *combobox;
    GList *i;
    SourceInfo *first = NULL;
    gint index, current_index;

    if (fs->priv->sources == NULL)
        em_filter_source_element_get_sources(fs);

    combobox = gtk_combo_box_new_text ();

    index = 0;
    current_index = -1;

    for (i = fs->priv->sources; i != NULL; i = g_list_next(i)) {
        SourceInfo *info = (SourceInfo *)i->data;
        gchar *label;

        if (info->url != NULL) {
            if (first == NULL)
                first = info;

            if (info->account_name && strcmp(info->account_name, info->address))
                label = g_strdup_printf("%s <%s>(%s)", info->name,
                             info->address, info->account_name);
            else
                label = g_strdup_printf("%s <%s>", info->name, info->address);

            gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), label);
            g_free(label);

            if (fs->priv->current_url && !strcmp(info->url, fs->priv->current_url))
                current_index = index;

            index++;
        }
    }

    if (current_index >= 0) {
        gtk_combo_box_set_active (GTK_COMBO_BOX (combobox), current_index);
    } else {
        gtk_combo_box_set_active (GTK_COMBO_BOX (combobox), 0);
        g_free(fs->priv->current_url);

        if (first)
            fs->priv->current_url = g_strdup(first->url);
        else
            fs->priv->current_url = NULL;
    }

    g_signal_connect (combobox, "changed", G_CALLBACK (source_changed), fs);

    return combobox;
}

static void
build_code(FilterElement *fe, GString *out, struct _FilterPart *ff)
{
    /* We are doing nothing on purpose. */
}

static void
format_sexp(FilterElement *fe, GString *out)
{
    EMFilterSourceElement *fs = (EMFilterSourceElement *)fe;

    e_sexp_encode_string(out, fs->priv->current_url);
}

static void
em_filter_source_element_add_source(EMFilterSourceElement *fs, const gchar *account_name, const gchar *name,
              const gchar *addr, const gchar *url)
{
    SourceInfo *info;

    g_return_if_fail(EM_IS_FILTER_SOURCE_ELEMENT(fs));

    info = g_new0(SourceInfo, 1);
    info->account_name = g_strdup(account_name);
    info->name = g_strdup(name);
    info->address = g_strdup(addr);
    info->url = g_strdup(url);

    fs->priv->sources = g_list_append(fs->priv->sources, info);
}

static void
em_filter_source_element_get_sources(EMFilterSourceElement *fs)
{
    EAccountList *accounts;
    const EAccount *account;
    GConfClient *gconf;
    EIterator *it;
    gchar *uri;
    CamelURL *url;

    /* should this get the global object from mail? */
    gconf = gconf_client_get_default();
    accounts = e_account_list_new(gconf);
    g_object_unref(gconf);

    for (it = e_list_get_iterator((EList *)accounts);
         e_iterator_is_valid(it);
         e_iterator_next(it)) {
        account = (const EAccount *)e_iterator_get(it);

        if (account->source == NULL || account->source->url == NULL || account->source->url[0] == 0)
            continue;

        url = camel_url_new(account->source->url, NULL);
        if (url) {
            /* hide secret stuff */
            uri = camel_url_to_string(url, CAMEL_URL_HIDE_ALL);
            camel_url_free(url);
            em_filter_source_element_add_source(fs, account->name, account->id->name, account->id->address, uri);
            g_free(uri);
        }
    }
    g_object_unref(it);
    g_object_unref(accounts);
}