path: root/widgets/misc/e-port-entry.c

/*
 * This library 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 Library General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 * Authors:
 *  Dan Vratil <dvratil@redhat.com>
 */

#include "e-port-entry.h"

#include <config.h>
#include <errno.h>
#include <stddef.h>
#include <string.h>

#define E_PORT_ENTRY_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_PORT_ENTRY, EPortEntryPrivate))

struct _EPortEntryPrivate {
    CamelNetworkSecurityMethod method;
    CamelProviderPortEntry *entries;
};

enum {
    PORT_NUM_COLUMN,
    PORT_DESC_COLUMN,
    PORT_IS_SSL_COLUMN
};

enum {
    PROP_0,
    PROP_IS_VALID,
    PROP_PORT,
    PROP_SECURITY_METHOD
};

G_DEFINE_TYPE (
    EPortEntry,
    e_port_entry,
    GTK_TYPE_COMBO_BOX)

static GtkEntry *
port_entry_get_entry (EPortEntry *port_entry)
{
    return GTK_ENTRY (gtk_bin_get_child (GTK_BIN (port_entry)));
}

static gboolean
port_entry_get_numeric_port (EPortEntry *port_entry,
                             gint *out_port)
{
    GtkEntry *entry;
    const gchar *port_string;
    gboolean valid;
    gint port;

    entry = port_entry_get_entry (port_entry);

    port_string = gtk_entry_get_text (entry);
    g_return_val_if_fail (port_string != NULL, FALSE);

    errno = 0;
    port = strtol (port_string, NULL, 10);
    valid = (errno == 0) && (port == CLAMP (port, 1, G_MAXUINT16));

    if (valid && out_port != NULL)
        *out_port = port;

    return valid;
}

static void
port_entry_text_changed (GtkEditable *editable,
                         EPortEntry *port_entry)
{
    GObject *object = G_OBJECT (port_entry);
    const gchar *desc = NULL;
    gint port = 0;
    gint ii = 0;

    g_object_freeze_notify (object);

    port_entry_get_numeric_port (port_entry, &port);

    if (port_entry->priv->entries != NULL) {
        while (port_entry->priv->entries[ii].port > 0) {
            if (port == port_entry->priv->entries[ii].port) {
                desc = port_entry->priv->entries[ii].desc;
                break;
            }
            ii++;
        }
    }

    if (desc != NULL)
        gtk_widget_set_tooltip_text (GTK_WIDGET (port_entry), desc);
    else
        gtk_widget_set_has_tooltip (GTK_WIDGET (port_entry), FALSE);

    g_object_notify (object, "port");
    g_object_notify (object, "is-valid");

    g_object_thaw_notify (object);
}

static void
port_entry_method_changed (EPortEntry *port_entry)
{
    CamelNetworkSecurityMethod method;
    gboolean standard_port = FALSE;
    gboolean valid, have_ssl = FALSE, have_nossl = FALSE;
    gint port = 0;
    gint ii;

    method = e_port_entry_get_security_method (port_entry);
    valid = port_entry_get_numeric_port (port_entry, &port);

    /* Only change the port number if it's currently on a standard
     * port (i.e. listed in a CamelProviderPortEntry).  Otherwise,
     * leave custom port numbers alone. */

    if (valid && port_entry->priv->entries != NULL) {
        for (ii = 0; port_entry->priv->entries[ii].port > 0 && (!have_ssl || !have_nossl); ii++) {
            /* Use only the first SSL/no-SSL port as a default in the list
             * and skip the others */
            if (port_entry->priv->entries[ii].is_ssl) {
                if (have_ssl)
                    continue;
                have_ssl = TRUE;
            } else {
                if (have_nossl)
                    continue;
                have_nossl = TRUE;
            }

            if (port == port_entry->priv->entries[ii].port) {
                standard_port = TRUE;
                break;
            }
        }
    }

    if (valid && !standard_port)
        return;

    switch (method) {
        case CAMEL_NETWORK_SECURITY_METHOD_SSL_ON_ALTERNATE_PORT:
            e_port_entry_activate_secured_port (port_entry, 0);
            break;
        default:
            e_port_entry_activate_nonsecured_port (port_entry, 0);
            break;
    }
}

static void
port_entry_set_property (GObject *object,
                         guint property_id,
                         const GValue *value,
                         GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_PORT:
            e_port_entry_set_port (
                E_PORT_ENTRY (object),
                g_value_get_uint (value));
            return;

        case PROP_SECURITY_METHOD:
            e_port_entry_set_security_method (
                E_PORT_ENTRY (object),
                g_value_get_enum (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
port_entry_get_property (GObject *object,
                         guint property_id,
                         GValue *value,
                         GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_IS_VALID:
            g_value_set_boolean (
                value, e_port_entry_is_valid (
                E_PORT_ENTRY (object)));
            return;

        case PROP_PORT:
            g_value_set_uint (
                value, e_port_entry_get_port (
                E_PORT_ENTRY (object)));
            return;

        case PROP_SECURITY_METHOD:
            g_value_set_enum (
                value, e_port_entry_get_security_method (
                E_PORT_ENTRY (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
port_entry_constructed (GObject *object)
{
    GtkEntry *entry;

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_port_entry_parent_class)->constructed (object);

    entry = port_entry_get_entry (E_PORT_ENTRY (object));

    g_signal_connect_after (
        entry, "changed",
        G_CALLBACK (port_entry_text_changed), object);
}

static void
port_entry_get_preferred_width (GtkWidget *widget,
                                gint *minimum_size,
                                gint *natural_size)
{
    PangoContext *context;
    PangoFontMetrics *metrics;
    PangoFontDescription *font_desc;
    GtkStyleContext *style_context;
    GtkStateFlags state;
    gint digit_width;
    gint parent_entry_width_min;
    gint parent_width_min;
    GtkWidget *entry;

    style_context = gtk_widget_get_style_context (widget);
    state = gtk_widget_get_state_flags (widget);
    gtk_style_context_get (
        style_context, state, "font", &font_desc, NULL);
    context = gtk_widget_get_pango_context (GTK_WIDGET (widget));
    metrics = pango_context_get_metrics (
        context, font_desc, pango_context_get_language (context));

    digit_width = PANGO_PIXELS (
        pango_font_metrics_get_approximate_digit_width (metrics));

    /* Preferred width of the entry */
    entry = gtk_bin_get_child (GTK_BIN (widget));
    gtk_widget_get_preferred_width (entry, NULL, &parent_entry_width_min);

    /* Preferred width of a standard combobox */
    GTK_WIDGET_CLASS (e_port_entry_parent_class)->
        get_preferred_width (widget, &parent_width_min, NULL);

    /* 6 * digit_width - port number has max 5
     * digits + extra free space for better look */
    if (minimum_size != NULL)
        *minimum_size =
            parent_width_min - parent_entry_width_min +
            6 * digit_width;

    if (natural_size != NULL)
        *natural_size =
            parent_width_min - parent_entry_width_min +
            6 * digit_width;

    pango_font_metrics_unref (metrics);
    pango_font_description_free (font_desc);
}

static void
e_port_entry_class_init (EPortEntryClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;

    g_type_class_add_private (class, sizeof (EPortEntryPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = port_entry_set_property;
    object_class->get_property = port_entry_get_property;
    object_class->constructed = port_entry_constructed;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->get_preferred_width = port_entry_get_preferred_width;

    g_object_class_install_property (
        object_class,
        PROP_IS_VALID,
        g_param_spec_boolean (
            "is-valid",
            NULL,
            NULL,
            FALSE,
            G_PARAM_READABLE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_PORT,
        g_param_spec_uint (
            "port",
            NULL,
            NULL,
            0,      /* Min port, 0 = invalid port */
            G_MAXUINT16,    /* Max port */
            0,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_SECURITY_METHOD,
        g_param_spec_enum (
            "security-method",
            "Security Method",
            "Method used to establish a network connection",
            CAMEL_TYPE_NETWORK_SECURITY_METHOD,
            CAMEL_NETWORK_SECURITY_METHOD_NONE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));
}

static void
e_port_entry_init (EPortEntry *port_entry)
{
    GtkCellRenderer *renderer;
    GtkListStore *store;

    port_entry->priv = E_PORT_ENTRY_GET_PRIVATE (port_entry);

    store = gtk_list_store_new (
        3, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_BOOLEAN);

    gtk_combo_box_set_model (
        GTK_COMBO_BOX (port_entry), GTK_TREE_MODEL (store));
    gtk_combo_box_set_entry_text_column (
        GTK_COMBO_BOX (port_entry), PORT_NUM_COLUMN);
    gtk_combo_box_set_id_column (
        GTK_COMBO_BOX (port_entry), PORT_NUM_COLUMN);

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_renderer_set_sensitive (renderer, TRUE);
    gtk_cell_layout_pack_start (
        GTK_CELL_LAYOUT (port_entry), renderer, FALSE);
    gtk_cell_layout_add_attribute (
        GTK_CELL_LAYOUT (port_entry),
        renderer, "text", PORT_NUM_COLUMN);

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_renderer_set_sensitive (renderer, FALSE);
    gtk_cell_layout_pack_start (
        GTK_CELL_LAYOUT (port_entry), renderer, TRUE);
    gtk_cell_layout_add_attribute (
        GTK_CELL_LAYOUT (port_entry),
        renderer, "text", PORT_DESC_COLUMN);
}

GtkWidget *
e_port_entry_new (void)
{
    return g_object_new (
        E_TYPE_PORT_ENTRY, "has-entry", TRUE, NULL);
}

void
e_port_entry_set_camel_entries (EPortEntry *port_entry,
                                CamelProviderPortEntry *entries)
{
    GtkComboBox *combo_box;
    GtkTreeIter iter;
    GtkTreeModel *model;
    GtkListStore *store;
    gint port = 0;
    gint i = 0;

    g_return_if_fail (E_IS_PORT_ENTRY (port_entry));
    g_return_if_fail (entries);

    port_entry->priv->entries = entries;

    combo_box = GTK_COMBO_BOX (port_entry);
    model = gtk_combo_box_get_model (combo_box);

    store = GTK_LIST_STORE (model);
    gtk_list_store_clear (store);

    while (entries[i].port > 0) {
        gchar *port_string;

        /* Grab the first port number. */
        if (port == 0)
            port = entries[i].port;

        port_string = g_strdup_printf ("%i", entries[i].port);

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (
            store, &iter,
            PORT_NUM_COLUMN, port_string,
            PORT_DESC_COLUMN, entries[i].desc,
            PORT_IS_SSL_COLUMN, entries[i].is_ssl,
            -1);
        i++;

        g_free (port_string);
    }

    e_port_entry_set_port (port_entry, port);
}

gint
e_port_entry_get_port (EPortEntry *port_entry)
{
    gint port = 0;

    g_return_val_if_fail (E_IS_PORT_ENTRY (port_entry), 0);

    port_entry_get_numeric_port (port_entry, &port);

    return port;
}

void
e_port_entry_set_port (EPortEntry *port_entry,
                       gint port)
{
    GtkEntry *entry;
    gchar *port_string;

    g_return_if_fail (E_IS_PORT_ENTRY (port_entry));

    entry = port_entry_get_entry (port_entry);
    port_string = g_strdup_printf ("%i", port);
    gtk_entry_set_text (entry, port_string);
    g_free (port_string);
}

gboolean
e_port_entry_is_valid (EPortEntry *port_entry)
{
    g_return_val_if_fail (E_IS_PORT_ENTRY (port_entry), FALSE);

    return port_entry_get_numeric_port (port_entry, NULL);
}

CamelNetworkSecurityMethod
e_port_entry_get_security_method (EPortEntry *port_entry)
{
    g_return_val_if_fail (
        E_IS_PORT_ENTRY (port_entry),
        CAMEL_NETWORK_SECURITY_METHOD_NONE);

    return port_entry->priv->method;
}

void
e_port_entry_set_security_method (EPortEntry *port_entry,
                                  CamelNetworkSecurityMethod method)
{
    g_return_if_fail (E_IS_PORT_ENTRY (port_entry));

    port_entry->priv->method = method;

    port_entry_method_changed (port_entry);

    g_object_notify (G_OBJECT (port_entry), "security-method");
}

/**
 * If there are more then one secured port in the model, you can specify
 * which of the secured ports should be activated by specifying the index.
 * The index counts only for secured ports, so if you have 5 ports of which
 * ports 1, 3 and 5 are secured, the association is 0=>1, 1=>3, 2=>5
 */
void
e_port_entry_activate_secured_port (EPortEntry *port_entry,
                                    gint index)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean is_ssl;
    gint iters = 0;

    g_return_if_fail (E_IS_PORT_ENTRY (port_entry));

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (port_entry));

    if (!gtk_tree_model_get_iter_first (model, &iter))
        return;

    do {
        gtk_tree_model_get (
            model, &iter, PORT_IS_SSL_COLUMN, &is_ssl, -1);
        if (is_ssl && (iters == index)) {
            gtk_combo_box_set_active_iter (
                GTK_COMBO_BOX (port_entry), &iter);
            return;
        }

        if (is_ssl)
            iters++;

    } while (gtk_tree_model_iter_next (model, &iter));
}

/**
 * If there are more then one unsecured port in the model, you can specify
 * which of the unsecured ports should be activated by specifiying the index.
 * The index counts only for unsecured ports, so if you have 5 ports, of which
 * ports 2 and 4 are unsecured, the associtation is 0=>2, 1=>4
 */
void
e_port_entry_activate_nonsecured_port (EPortEntry *port_entry,
                                       gint index)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    gboolean is_ssl;
    gint iters = 0;

    g_return_if_fail (E_IS_PORT_ENTRY (port_entry));

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (port_entry));

    if (!gtk_tree_model_get_iter_first (model, &iter))
        return;

    do {
        gtk_tree_model_get (model, &iter, PORT_IS_SSL_COLUMN, &is_ssl, -1);
        if (!is_ssl && (iters == index)) {
            gtk_combo_box_set_active_iter (
                GTK_COMBO_BOX (port_entry), &iter);
            return;
        }

        if (!is_ssl)
            iters++;

    } while (gtk_tree_model_iter_next (model, &iter));
}