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/*
 * e-shell-utils.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) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

/**
 * SECTION: e-shell-utils
 * @short_description: high-level utilities with shell integration
 * @include: shell/e-shell-utils.h
 **/

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

#include "e-shell-utils.h"

#include <glib/gi18n-lib.h>

#include <libedataserver/e-data-server-util.h>

#include "widgets/misc/e-import-assistant.h"

/**
 * e_shell_configure_ui_manager:
 * @shell: an #EShell
 * @ui_manager: an #EUIManager
 *
 * Adds shell integration to @ui_manager.  In particular, it keeps
 * @ui_manager's EUIManager:express-mode property synchronized with
 * @shell's EShell:express-mode property.
 **/
void
e_shell_configure_ui_manager (EShell *shell,
                              EUIManager *ui_manager)
{
    g_return_if_fail (E_IS_SHELL (shell));
    g_return_if_fail (E_IS_UI_MANAGER (ui_manager));

    g_object_bind_property (
        shell, "express-mode",
        ui_manager, "express-mode",
        G_BINDING_SYNC_CREATE);
}

/**
 * e_shell_run_open_dialog:
 * @shell: an #EShell
 * @title: file chooser dialog title
 * @customize_func: optional dialog customization function
 * @customize_data: optional data to pass to @customize_func
 *
 * Runs a #GtkFileChooserDialog in open mode with the given title and
 * returns the selected #GFile.  If @customize_func is provided, the
 * function is called just prior to running the dialog (the file chooser
 * is the first argument, @customize data is the second).  If the user
 * cancels the dialog the function will return %NULL.
 *
 * Returns: the #GFile to open, or %NULL
 **/
GFile *
e_shell_run_open_dialog (EShell *shell,
                         const gchar *title,
                         GtkCallback customize_func,
                         gpointer customize_data)
{
    GtkFileChooser *file_chooser;
    GFile *chosen_file = NULL;
    GtkWidget *dialog;
    GtkWindow *parent;

    g_return_val_if_fail (E_IS_SHELL (shell), NULL);

    parent = e_shell_get_active_window (shell);

    dialog = gtk_file_chooser_dialog_new (
        title, parent,
        GTK_FILE_CHOOSER_ACTION_OPEN,
        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
        GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL);

    file_chooser = GTK_FILE_CHOOSER (dialog);

    gtk_dialog_set_default_response (
        GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);

    gtk_file_chooser_set_local_only (file_chooser, FALSE);

    /* Allow further customizations before running the dialog. */
    if (customize_func != NULL)
        customize_func (dialog, customize_data);

    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
        chosen_file = gtk_file_chooser_get_file (file_chooser);

    gtk_widget_destroy (dialog);

    return chosen_file;
}

/**
 * e_shell_run_save_dialog:
 * @shell: an #EShell
 * @title: file chooser dialog title
 * @suggestion: file name suggestion, or %NULL
 * @filters: Possible filters for dialog, or %NULL
 * @customize_func: optional dialog customization function
 * @customize_data: optional data to pass to @customize_func
 *
 * Runs a #GtkFileChooserDialog in save mode with the given title and
 * returns the selected #GFile.  If @customize_func is provided, the
 * function is called just prior to running the dialog (the file chooser
 * is the first argument, @customize_data is the second).  If the user
 * cancels the dialog the function will return %NULL.
 *
 * With non-%NULL @filters will be added also file filters to the dialog.
 * The string format is "pat1:mt1;pat2:mt2:...", where 'pat' is a pattern
 * and 'mt' is a MIME type for the pattern to be used.  There can be more
 * than one MIME type, those are separated by comma.
 *
 * Returns: the #GFile to save to, or %NULL
 **/
GFile *
e_shell_run_save_dialog (EShell *shell,
                         const gchar *title,
                         const gchar *suggestion,
                         const gchar *filters,
                         GtkCallback customize_func,
                         gpointer customize_data)
{
    GtkFileChooser *file_chooser;
    GFile *chosen_file = NULL;
    GtkWidget *dialog;
    GtkWindow *parent;

    g_return_val_if_fail (E_IS_SHELL (shell), NULL);

    parent = e_shell_get_active_window (shell);

    dialog = gtk_file_chooser_dialog_new (
        title, parent,
        GTK_FILE_CHOOSER_ACTION_SAVE,
        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
        GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT, NULL);

    file_chooser = GTK_FILE_CHOOSER (dialog);

    gtk_dialog_set_default_response (
        GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);

    gtk_file_chooser_set_local_only (file_chooser, FALSE);
    gtk_file_chooser_set_do_overwrite_confirmation (file_chooser, TRUE);

    if (suggestion != NULL) {
        gchar *current_name;

        current_name = g_strdup (suggestion);
        e_filename_make_safe (current_name);
        gtk_file_chooser_set_current_name (file_chooser, current_name);
        g_free (current_name);
    }

    if (filters != NULL) {
        gchar **flts = g_strsplit (filters, ";", -1);
        gint i;

        for (i = 0; flts[i]; i++) {
            GtkFileFilter *filter = gtk_file_filter_new ();
            gchar *flt = flts[i];
            gchar *delim = strchr (flt, ':'), *next = NULL;

            if (delim) {
                *delim = 0;
                next = strchr (delim + 1, ',');
            }

            gtk_file_filter_add_pattern (filter, flt);
            if (g_ascii_strcasecmp (flt, "*.mbox") == 0)
                gtk_file_filter_set_name (filter, _("Berkeley Mailbox (mbox)"));
            else if (g_ascii_strcasecmp (flt, "*.vcf") == 0)
                gtk_file_filter_set_name (filter, _("vCard (.vcf)"));
            else if (g_ascii_strcasecmp (flt, "*.ics") == 0)
                gtk_file_filter_set_name (filter, _("iCalendar (.ics)"));

            while (delim) {
                delim++;
                if (next)
                    *next = 0;

                gtk_file_filter_add_mime_type (filter, delim);

                delim = next;
                if (next)
                    next = strchr (next + 1, ',');
            }

            gtk_file_chooser_add_filter (file_chooser, filter);
        }

        if (flts && flts[0]) {
            GtkFileFilter *filter = gtk_file_filter_new ();

            gtk_file_filter_add_pattern (filter, "*");
            gtk_file_filter_set_name (filter, _("All Files (*)"));
            gtk_file_chooser_add_filter (file_chooser, filter);
        }

        g_strfreev (flts);
    }

    /* Allow further customizations before running the dialog. */
    if (customize_func != NULL)
        customize_func (dialog, customize_data);

    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
        chosen_file = gtk_file_chooser_get_file (file_chooser);

    gtk_widget_destroy (dialog);

    return chosen_file;
}

/**
 * e_shell_utils_import_uris:
 * @shell: The #EShell instance
 * @uris: %NULL-terminated list of URIs to import
 *
 * Imports given URIs to Evolution, giving user a choice what to import
 * if more than one importer can be applied, and where to import it, if
 * the importer itself is configurable.
 *
 * URIs should be either a filename or URI of form file://.
 * All others are skipped.
 *
 * Returns: the number of URIs successfully handled
 **/
guint
e_shell_utils_import_uris (EShell *shell,
                           const gchar * const *uris)
{
    GtkWindow *parent;
    GtkWidget *assistant;

    g_return_val_if_fail (shell != NULL, 0);
    g_return_val_if_fail (uris != NULL, 0);

    parent = e_shell_get_active_window (shell);
    assistant = e_import_assistant_new_simple (parent, uris);

    if (assistant) {
        g_signal_connect_after (
            assistant, "cancel",
            G_CALLBACK (gtk_widget_destroy), NULL);

        g_signal_connect_after (
            assistant, "finished",
            G_CALLBACK (gtk_widget_destroy), NULL);

        gtk_application_add_window (
            GTK_APPLICATION (shell),
            GTK_WINDOW (assistant));

        gtk_widget_show (assistant);
    } else
        g_warning ("Cannot import any of the given URIs");

    return g_strv_length ((gchar **) uris);
}

/**
 * e_shell_hide_widgets_for_express_mode:
 * @shell: an #EShell
 * @builder: a #GtkBuilder
 * @widget_name: NULL-terminated list of strings
 *
 * If Evolution is running in Express mode (i.e. if the specified @shell is
 * in Express mode), then this function will hide a list of widgets, based
 * on their specified names.  The list of names must be NULL-terminated,
 * and each element of that list must be the name of a widget present in
 * @builder.  Those widgets will then get hidden.
 *
 * This can be used to simplify preference dialogs and such in an easy
 * fashion, for use in Express mode.
 *
 * If Evolution is not running in Express mode, this function does nothing.
 */
void
e_shell_hide_widgets_for_express_mode (EShell *shell,
                                       GtkBuilder *builder,
                                       const gchar *widget_name,
                                       ...)
{
    va_list args;

    g_return_if_fail (E_IS_SHELL (shell));
    g_return_if_fail (GTK_IS_BUILDER (builder));
    g_return_if_fail (widget_name != NULL);

    if (!e_shell_get_express_mode (shell))
        return;

    va_start (args, widget_name);

    while (widget_name != NULL) {
        GObject *object;

        object = gtk_builder_get_object (builder, widget_name);
        if (!GTK_IS_WIDGET (object)) {
            g_error (
                "Object '%s' was not found in the builder "
                "file, or it is not a GtkWidget", widget_name);
            g_assert_not_reached ();
        }

        gtk_widget_hide (GTK_WIDGET (object));

        widget_name = va_arg (args, const gchar *);
    }

    va_end (args);
}