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/*
 * 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:
 *      Michael Meeks <michael@ximian.com>
 *  Ettore Perazzoli <ettore@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include "e-dialog-utils.h"

#include <errno.h>
#include <unistd.h>
#include <glib/gstdio.h>

#include <gconf/gconf-client.h>
#include <glib/gi18n.h>

#include "e-util/e-util.h"
#include "e-util/e-error.h"


/**
 * e_notice:
 * @parent: the dialog's parent window, or %NULL
 * @type: the type of dialog (%GTK_MESSAGE_INFO, %GTK_MESSAGE_WARNING,
 * or %GTK_MESSAGE_ERROR)
 * @format: printf-style format string, followed by arguments
 *
 * Convenience function to show a dialog with a message and an "OK"
 * button.
 **/
void
e_notice (gpointer parent, GtkMessageType type, const gchar *format, ...)
{
    GtkWidget *dialog;
    va_list args;
    gchar *str;

    va_start (args, format);
    str = g_strdup_vprintf (format, args);
    dialog = gtk_message_dialog_new (NULL,
                     GTK_DIALOG_DESTROY_WITH_PARENT,
                     type,
                     GTK_BUTTONS_OK,
                     "%s",
                     str);
    va_end (args);
    g_free (str);

    if (parent)
        gtk_window_set_transient_for (GTK_WINDOW (dialog), parent);
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}

/**
 * e_file_get_save_filesel:
 * @parent: parent window
 * @title: dialog title
 * @name: filename; already in a proper form (suitable for file system)
 * @action: action for dialog
 *
 * Creates a save dialog, using the saved directory from gconf.   The dialog has
 * no signals connected and is not shown.
 **/
GtkWidget *
e_file_get_save_filesel (GtkWindow *parent,
                         const gchar *title,
                         const gchar *name,
                         GtkFileChooserAction action)
{
    GtkWidget *filesel;
    gchar *uri;

    g_return_val_if_fail (GTK_IS_WINDOW (parent), NULL);

    filesel = gtk_file_chooser_dialog_new (
        title, parent, action,
        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
        (action == GTK_FILE_CHOOSER_ACTION_OPEN) ?
        GTK_STOCK_OPEN : GTK_STOCK_SAVE, GTK_RESPONSE_OK, NULL);
    gtk_dialog_set_default_response (GTK_DIALOG (filesel), GTK_RESPONSE_OK);
    gtk_file_chooser_set_local_only (GTK_FILE_CHOOSER (filesel), FALSE);

    uri = e_file_get_save_path ();

    gtk_file_chooser_set_current_folder_uri (
        GTK_FILE_CHOOSER (filesel), uri);

    if (name && name[0])
        gtk_file_chooser_set_current_name (
            GTK_FILE_CHOOSER (filesel), name);

    g_free (uri);

    return filesel;
}

/**
 * e_file_can_save:
 *
 * Return TRUE if the URI can be saved to, FALSE otherwise.  It checks local
 * files to see if they're regular and can be accessed.  If the file exists and
 * is writable, it pops up a dialog asking the user if they want to overwrite
 * it.  Returns the users choice.
 **/
gboolean
e_file_can_save(GtkWindow *parent, const gchar *uri)
{
    struct stat st;
    gchar *path;
    gboolean res;

    if (!uri || uri[0] == 0)
        return FALSE;

    /* Assume remote files are writable; too costly to check */
    if (!e_file_check_local(uri))
        return TRUE;

    path = g_filename_from_uri (uri, NULL, NULL);
    if (!path)
        return FALSE;

    /* make sure we can actually save to it... */
    if (g_stat (path, &st) != -1 && !S_ISREG (st.st_mode)) {
        g_free(path);
        return FALSE;
    }

    res = TRUE;
    if (g_access (path, F_OK) == 0) {
        if (g_access (path, W_OK) != 0) { e_error_run(parent, "mail:no-save-path", path, g_strerror(errno), NULL);
            g_free(path);
            return FALSE;
        }

        res = e_error_run(parent, E_ERROR_ASK_FILE_EXISTS_OVERWRITE, path, NULL) == GTK_RESPONSE_OK;

    }

    g_free(path);
    return res;
}

gboolean
e_file_check_local (const gchar *name)
{
    gchar *uri;

    uri = g_filename_to_uri (name, NULL, NULL);
    if (uri) {
        g_free(uri);
        return TRUE;
    }

    return FALSE;
}