path: root/e-util/e-plugin-util.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/>
 *
 *
 * Copyright (C) 1999-2010 Novell, Inc. (www.novell.com)
 */

#include <glib.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libsoup/soup.h>
#include <libedataserver/e-source.h>
#include <string.h>

#include "e-plugin-util.h"

/* name of a property on a widget with corresponding property name for an ESource */
#define EPU_SP_NAME "e-source-property-name"

#define EPU_CHECK_TRUE "epu-check-true-value"
#define EPU_CHECK_FALSE "epu-check-false-value"

static gboolean
epu_is_uri_proto (const gchar *uri, const gchar *protocol)
{
    gboolean res;

    g_return_val_if_fail (uri != NULL, FALSE);
    g_return_val_if_fail (protocol != NULL, FALSE);

    res = uri && g_ascii_strncasecmp (uri, protocol, strlen (protocol)) == 0;

    if (res)
        res = strchr (protocol, ':') != NULL || uri[strlen (protocol)] == ':';

    return res;
}

/**
 * e_plugin_util_is_source_proto:
 * @source: #ESource object
 * @protocol: protocol to check on, like "http", "https", ...
 *
 * Returns whether given source's uri is of the given protocol.
 **/
gboolean
e_plugin_util_is_source_proto (ESource *source, const gchar *protocol)
{
    gchar *uri;
    gboolean res;

    g_return_val_if_fail (source != NULL, FALSE);
    g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
    g_return_val_if_fail (protocol != NULL, FALSE);

    uri = e_source_get_uri (source);
    res = epu_is_uri_proto (uri, protocol);
    g_free (uri);

    return res;
}

/**
 * e_plugin_util_is_group_proto:
 * @group: #ESourceGroup object
 * @protocol: protocol to check on, like "http", "https", ...
 *
 * Returns whether given groups' base uri is of the given protocol.
 **/
gboolean
e_plugin_util_is_group_proto (ESourceGroup *group, const gchar *protocol)
{
    g_return_val_if_fail (group != NULL, FALSE);
    g_return_val_if_fail (E_IS_SOURCE_GROUP (group), FALSE);
    g_return_val_if_fail (protocol != NULL, FALSE);

    return epu_is_uri_proto (e_source_group_peek_base_uri (group), protocol);
}

/**
 * e_plugin_util_replace_at_sign:
 * @str: string to work with
 *
 * Replaces all '@' with '%40' in @str.
 * Returns newly allocated string.
 **/
gchar *
e_plugin_util_replace_at_sign (const gchar *str)
{
    gchar *res, *at;

    if (!str)
        return NULL;

    res = g_strdup (str);
    while (at = strchr (res, '@'), at) {
        gchar *tmp = g_malloc0 (sizeof (gchar) * (1 + strlen (res) + 2));

        strncpy (tmp, res, at - res);
        strcat (tmp, "%40");
        strcat (tmp, at + 1);

        g_free (res);
        res = tmp;
    }

    return res;
}

/**
 * e_plugin_util_uri_no_proto:
 * @uri: #SoupURI object
 *
 * Returns uri encoded as string, without protocol part.
 * Returned pointer should be freed with g_free.
 **/
gchar *
e_plugin_util_uri_no_proto (SoupURI *uri)
{
    gchar *full_uri, *uri_noproto;
    const gchar *tmp;

    g_return_val_if_fail (uri != NULL, NULL);

    full_uri = soup_uri_to_string (uri, FALSE);
    g_return_val_if_fail (full_uri != NULL, NULL);

    tmp = strstr (full_uri, "://");
    if (tmp && tmp < strchr (full_uri, '/')) {
        uri_noproto = g_strdup (tmp + 3);
    } else {
        uri_noproto = full_uri;
        full_uri = NULL;
    }

    g_free (full_uri);

    return uri_noproto;
}

static void
epu_update_source_property (ESource *source, GObject *object, const gchar *value)
{
    const gchar *property_name;

    g_return_if_fail (source != NULL);
    g_return_if_fail (E_IS_SOURCE (source));
    g_return_if_fail (object != NULL);
    g_return_if_fail (G_IS_OBJECT (object));

    property_name = g_object_get_data (object, EPU_SP_NAME);
    g_return_if_fail (property_name != NULL);

    e_source_set_property (source, property_name, value);
}

static void
epu_entry_changed_cb (GObject *entry, ESource *source)
{
    g_return_if_fail (entry != NULL);
    g_return_if_fail (GTK_IS_ENTRY (entry));

    epu_update_source_property (source, entry, gtk_entry_get_text (GTK_ENTRY (entry)));
}

static void
epu_check_toggled_cb (GObject *button, ESource *source)
{
    const gchar *true_value, *false_value;

    g_return_if_fail (button != NULL);
    g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));

    true_value = g_object_get_data (button, EPU_CHECK_TRUE);
    false_value = g_object_get_data (button, EPU_CHECK_FALSE);

    epu_update_source_property (source, button, gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button)) ? true_value : false_value);
}

/**
 * e_plugin_util_add_entry:
 * @parent: two-columns #GtkTable or #GtkContainer, where to add new entry
 * @label: label for the entry; can be NULL for no label
 * @source: #ESource object to which tight the entry change; can be NULL for no property binding
 * @source_property: source's property name to use for a value; can be NULL for no property binding
 *
 * Adds a #GtkEntry to the table at the last row or to the container, with a given label.
 * The entry will be always at the second column of the table.
 * Value of an entry will be prefilled with a property value of the given
 * source, and the source will be updated on any change of the entry automatically.
 * Entry is shown by default.
 *
 * Returns pointer to newly added #GtkEntry.
 **/
GtkWidget *
e_plugin_util_add_entry (GtkWidget *parent, const gchar *label, ESource *source, const gchar *source_property)
{
    GtkWidget *entry, *lbl = NULL;
    const gchar *value;
    gint row = -1;

    g_return_val_if_fail (parent != NULL, NULL);
    g_return_val_if_fail (GTK_IS_TABLE (parent) || GTK_IS_CONTAINER (parent), NULL);

    if (source || source_property) {
        g_return_val_if_fail (source != NULL, NULL);
        g_return_val_if_fail (E_IS_SOURCE (source), NULL);
        g_return_val_if_fail (source_property != NULL, NULL);
        g_return_val_if_fail (*source_property != 0, NULL);
    }

    if (GTK_IS_TABLE (parent))
        row = GTK_TABLE (parent)->nrows;

    if (label) {
        lbl = gtk_label_new_with_mnemonic (label);
        gtk_widget_show (lbl);
        gtk_misc_set_alignment (GTK_MISC (lbl), 0.0, 0.5);
        if (row != -1)
            gtk_table_attach (GTK_TABLE (parent), lbl, 0, 1, row, row + 1, GTK_FILL, 0, 0, 0);
        else
            gtk_container_add (GTK_CONTAINER (parent), lbl);
    }

    if (source)
        value = e_source_get_property (source, source_property);
    else
        value = NULL;

    entry = gtk_entry_new ();
    gtk_widget_show (entry);
    gtk_entry_set_text (GTK_ENTRY (entry), value ? value : "");
    if (row != -1)
        gtk_table_attach (GTK_TABLE (parent), entry, 1, 2, row, row + 1, GTK_EXPAND | GTK_FILL, 0, 0, 0);
    else
        gtk_container_add (GTK_CONTAINER (parent), entry);

    if (lbl)
        gtk_label_set_mnemonic_widget (GTK_LABEL (lbl), entry);

    if (source) {
        g_object_set_data_full (G_OBJECT (entry), EPU_SP_NAME, g_strdup (source_property), g_free);
        g_signal_connect (G_OBJECT (entry), "changed", G_CALLBACK (epu_entry_changed_cb), source);
    }

    return entry;
}

/**
 * e_plugin_util_add_check:
 * @parent: either two-columns #GtkTable or #GtkContainer where to add new check box; or NULL to just create it
 * @label: label for the check; cannot be NULL
 * @source: #ESource object to which tight the check change; can be NULL for no property binding
 * @source_property: source's property name to use for a value; can be NULL for no property binding
 * @true_value: what value use for a checked state in a source
 * @false_value: what value use for an unchecked state in a source
 *
 * Adds a #GtkCheckButton to the parent (if provided) at the last row, with a given label.
 * The check will be always at the second column of the table.
 * Value of a check will be prefilled with a property value of the given
 * source, and the source will be updated on any change of the check automatically.
 * Check is shown by default.
 *
 * Returns pointer to newly added #GtkCheckButton.
 **/
GtkWidget *
e_plugin_util_add_check (GtkWidget *parent, const gchar *label, ESource *source, const gchar *source_property, const gchar *true_value, const gchar *false_value)
{
    GtkWidget *check;
    const gchar *value;

    g_return_val_if_fail (parent == NULL || GTK_IS_TABLE (parent) || GTK_IS_CONTAINER (parent), NULL);
    g_return_val_if_fail (label != NULL, NULL);

    if (source || source_property) {
        g_return_val_if_fail (source != NULL, NULL);
        g_return_val_if_fail (E_IS_SOURCE (source), NULL);
        g_return_val_if_fail (source_property != NULL, NULL);
        g_return_val_if_fail (*source_property != 0, NULL);
    }

    if (source)
        value = e_source_get_property (source, source_property);
    else
        value = NULL;

    check = gtk_check_button_new_with_mnemonic (label);
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check),
        value && (value == true_value ||
              (true_value && g_str_equal (value, true_value)) ||
              (!source && g_str_equal (value, "1"))));
    gtk_widget_show (check);

    if (parent && GTK_IS_TABLE (parent)) {
        gint row = GTK_TABLE (parent)->nrows;

        gtk_table_attach (GTK_TABLE (parent), check, 1, 2, row , row + 1, GTK_FILL, 0, 0, 0);
    } else if (parent) {
        gtk_container_add (GTK_CONTAINER (parent), check);
    }

    if (source) {
        g_object_set_data_full (G_OBJECT (check), EPU_SP_NAME, g_strdup (source_property), g_free);
        g_object_set_data_full (G_OBJECT (check), EPU_CHECK_TRUE, g_strdup (true_value), g_free);
        g_object_set_data_full (G_OBJECT (check), EPU_CHECK_FALSE, g_strdup (false_value), g_free);
        g_signal_connect (G_OBJECT (check), "toggled", G_CALLBACK (epu_check_toggled_cb), source);
    }

    return check;
}

static void
epu_update_refresh_value (GtkWidget *spin, GtkWidget *combobox, ESource *source)
{
    gchar *value;
    gint setting = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (spin));
    switch (gtk_combo_box_get_active (GTK_COMBO_BOX (combobox))) {
    case 0:
        /* minutes */
        break;
    case 1:
        /* hours */
        setting *= 60;
        break;
    case 2:
        /* days */
        setting *= 1440;
        break;
    case 3:
        /* weeks */
        setting *= 10080;
        break;
    default:
        g_warning ("%s: Time unit out of range", G_STRFUNC);
        break;
    }

    value = g_strdup_printf ("%d", setting);
    epu_update_source_property (source, G_OBJECT (spin), value);
    g_free (value);
}

static void
epu_refresh_spin_changed_cb (GtkWidget *spin, ESource *source)
{
    g_return_if_fail (spin != NULL);
    g_return_if_fail (GTK_IS_SPIN_BUTTON (spin));

    epu_update_refresh_value (spin, g_object_get_data (G_OBJECT (spin), "refresh-combo"), source);
}

static void
epu_refresh_combo_changed_cb (GtkWidget *combobox, ESource *source)
{
    g_return_if_fail (combobox != NULL);
    g_return_if_fail (GTK_IS_COMBO_BOX (combobox));

    epu_update_refresh_value (g_object_get_data (G_OBJECT (combobox), "refresh-spin"), combobox, source);
}

/**
 * e_plugin_util_add_refresh:
 * @parent: two-columns #GtkTable where to add new "refresh" setup widgets or NULL to just create an hbox
 * @label: label for the widgets; can be NULL, but for parent == NULL is ignored
 * @source: #ESource object to which tight the refresh change; cannot be NULL
 * @source_property: source's property name to use for a value; cannot be NULL
 *
 * Adds widgets to setup Refresh interval. The stored value is in minutes.
 * Returns pointer to an HBox, which contains two widgets, spin and a combo box.
 * Both can be accessed by g_object_get_data with a name "refresh-spin" and "refresh-combo".
 **/
GtkWidget *
e_plugin_util_add_refresh (GtkWidget *parent, const gchar *label, ESource *source, const gchar *source_property)
{
    GtkWidget *lbl = NULL, *hbox, *spin, *combo;
    const gchar *value;
    gint row = -1, value_num, item_num = 0;

    g_return_val_if_fail (parent == NULL || GTK_IS_TABLE (parent), NULL);
    g_return_val_if_fail (source != NULL, NULL);
    g_return_val_if_fail (E_IS_SOURCE (source), NULL);
    g_return_val_if_fail (source_property != NULL, NULL);
    g_return_val_if_fail (*source_property != 0, NULL);

    if (parent)
        row = GTK_TABLE (parent)->nrows;

    value = e_source_get_property (source, source_property);
    if (!value) {
        value = "30";
        e_source_set_property (source, source_property, value);
    }

    if (label && parent) {
        lbl = gtk_label_new_with_mnemonic (label);
        gtk_widget_show (lbl);
        gtk_misc_set_alignment (GTK_MISC (lbl), 0.0, 0.5);
        gtk_table_attach (GTK_TABLE (parent), lbl, 0, 1, row, row + 1, GTK_FILL, 0, 0, 0);
    }

    hbox = gtk_hbox_new (FALSE, 6);
    gtk_widget_show (hbox);

    spin = gtk_spin_button_new_with_range (0, 100, 1);
    gtk_widget_show (spin);
    gtk_box_pack_start (GTK_BOX (hbox), spin, FALSE, TRUE, 0);

    combo = gtk_combo_box_new_text ();
    gtk_widget_show (combo);
    gtk_combo_box_append_text (GTK_COMBO_BOX (combo), _("minutes"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combo), _("hours"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combo), _("days"));
    gtk_combo_box_append_text (GTK_COMBO_BOX (combo), _("weeks"));
    gtk_box_pack_start (GTK_BOX (hbox), combo, FALSE, TRUE, 0);

    value_num = value ? atoi (value) : 30;

    if (value_num && !(value_num % 10080)) {
        /* weeks */
        item_num = 3;
        value_num /= 10080;
    } else if (value_num && !(value_num % 1440)) {
        /* days */
        item_num = 2;
        value_num /= 1440;
    } else if (value_num && !(value_num % 60)) {
        /* hours */
        item_num = 1;
        value_num /= 60;
    }

    gtk_combo_box_set_active (GTK_COMBO_BOX (combo), item_num);
    gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin), value_num);

    if (lbl)
        gtk_label_set_mnemonic_widget (GTK_LABEL (lbl), spin);

    g_object_set_data_full (G_OBJECT (spin), EPU_SP_NAME, g_strdup (source_property), g_free);

    g_object_set_data (G_OBJECT (combo), "refresh-spin", spin);
    g_object_set_data (G_OBJECT (spin), "refresh-combo", combo);
    g_object_set_data (G_OBJECT (hbox), "refresh-spin", spin);
    g_object_set_data (G_OBJECT (hbox), "refresh-combo", combo);
    g_signal_connect (G_OBJECT (combo), "changed", G_CALLBACK (epu_refresh_combo_changed_cb), source);
    g_signal_connect (G_OBJECT (spin), "value-changed", G_CALLBACK (epu_refresh_spin_changed_cb), source);

    if (parent)
        gtk_table_attach (GTK_TABLE (parent), hbox, 1, 2, row, row + 1, GTK_EXPAND | GTK_FILL, 0, 0, 0);

    return hbox;
}