path: root/e-util/e-dialog-utils.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-dialog-utils.h
 *
 * Copyright (C) 2001  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors:
 *   Michael Meeks <michael@ximian.com>
 *   Ettore Perazzoli <ettore@ximian.com>
 */

#include "e-dialog-utils.h"

#include <gdk/gdkx.h>

#include <gtk/gtkfilesel.h>
#include <gtk/gtkmain.h>
#include <gtk/gtkplug.h>

#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.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 char *format, ...)
{
    GtkWidget *dialog;
    va_list args;
    char *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)
        e_dialog_set_transient_for (GTK_WINDOW (dialog), parent);
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}

/**
 * e_notice_with_xid:
 * @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
 *
 * Like e_notice(), but takes a GdkNativeWindow for the parent
 * window argument.
 **/
void
e_notice_with_xid (GdkNativeWindow parent, GtkMessageType type, const char *format, ...)
{
    GtkWidget *dialog;
    va_list args;
    char *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)
        e_dialog_set_transient_for_xid (GTK_WINDOW (dialog), parent);
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);
}


/* Tests whether or not an X Window is being managed by the
 * window manager.
 */
static gboolean
window_is_wm_toplevel (Display *display, Window window)
{
    static Atom WM_STATE = None;
    unsigned long nitems, after;
    unsigned char *data = NULL;
    Atom type = None;
    int format;

    if (!WM_STATE)
        WM_STATE = XInternAtom (display, "WM_STATE", False);

    if (XGetWindowProperty (display, window, WM_STATE, 0, 0, False,
                AnyPropertyType, &type, &format,
                &nitems, &after, &data) == Success) {
        if (data)
            XFree((char*)data);
        if (type)
            return TRUE;
    }
    return FALSE;
}

/**
 * e_dialog_set_transient_for:
 * @dialog: a dialog window
 * @parent_widget: the parent for @dialog
 * 
 * This sets the parent for @dialog to be @parent_widget. Unlike
 * gtk_window_set_transient_for(), this doesn't need @parent_widget to
 * be the actual toplevel, and also works if @parent_widget is
 * embedded as a Bonobo control by an out-of-process container.
 * @parent_widget must already be realized before calling this
 * function, but @dialog does not need to be.
 **/
void
e_dialog_set_transient_for (GtkWindow *dialog,
                GtkWidget *parent_widget)
{
    GtkWidget *toplevel;
    Window parent, root_ret, *children;
    unsigned int numchildren;
    Display *display;
    Status status;

    g_return_if_fail (GTK_IS_WINDOW (dialog));
    g_return_if_fail (GTK_IS_WIDGET (parent_widget));

    toplevel = gtk_widget_get_toplevel (parent_widget);
    if (toplevel == NULL)
        return;

    if (!GTK_IS_PLUG (toplevel)) {
        gtk_window_set_transient_for (GTK_WINDOW (dialog),
                          GTK_WINDOW (toplevel));
        return;
    }

    /* Find the top-level windowmanager-managed X Window */
    display = GDK_WINDOW_XDISPLAY (parent_widget->window);
    parent = GDK_WINDOW_XID (parent_widget->window);

    while (parent && !window_is_wm_toplevel (display, parent)) {
        status = XQueryTree (display, parent, &root_ret,
                     &parent, &children, &numchildren);
        if (status != 0)
            XFree (children);
    }

    e_dialog_set_transient_for_xid (dialog, parent);
}

static void
dialog_realized (GtkWindow *dialog, gpointer xid)
{
    e_dialog_set_transient_for_xid (dialog, (GdkNativeWindow)xid);
}

/**
 * e_dialog_set_transient_for_xid:
 * @dialog: a dialog window
 * @xid: the X Window parent
 * 
 * Like e_dialog_set_transient_for(), but use an XID to specify the
 * parent window.
 **/
void
e_dialog_set_transient_for_xid (GtkWindow *dialog,
                GdkNativeWindow xid)
{
    GdkDisplay *display;
    GdkWindow *parent;

    g_return_if_fail (GTK_IS_WINDOW (dialog));

    if (!GTK_WIDGET_REALIZED (dialog)) {
        g_signal_connect (dialog, "realize",
                  G_CALLBACK (dialog_realized),
                  (gpointer) xid);
        return;
    }

    display = gdk_drawable_get_display (GDK_DRAWABLE (GTK_WIDGET (dialog)->window));
    parent = gdk_window_lookup_for_display (display, xid);
    if (!parent) {
        parent = gdk_window_foreign_new_for_display (display, xid);
        g_return_if_fail (parent != NULL);
    }

    gdk_window_set_transient_for (GTK_WIDGET (dialog)->window, parent);
}



static void
save_ok (GtkWidget *widget, gpointer data)
{
    GtkWidget *fs;
    char **filename = data;
    const char *path;
    int btn = GTK_RESPONSE_YES;
    
    fs = gtk_widget_get_toplevel (widget);
    path = gtk_file_selection_get_filename (GTK_FILE_SELECTION (fs));
    
    if (g_file_test (path, G_FILE_TEST_IS_REGULAR)) {
        GtkWidget *dlg;
        
        dlg = gtk_message_dialog_new (GTK_WINDOW (fs), 0,
                          GTK_MESSAGE_QUESTION,
                          GTK_BUTTONS_YES_NO,
                          _("A file by that name already exists.\n"
                        "Overwrite it?"));
        gtk_window_set_title (GTK_WINDOW (dlg), _("Overwrite file?"));

        btn = gtk_dialog_run (GTK_DIALOG (dlg));
        gtk_widget_destroy (dlg);
    }
    
    if (btn == GTK_RESPONSE_YES)
        *filename = g_strdup (path);
    
    gtk_main_quit ();
}

char *
e_file_dialog_save (const char *title)
{
    GtkFileSelection *fs;
    char *path, *filename = NULL;
    
    fs = GTK_FILE_SELECTION (gtk_file_selection_new (title));
    path = g_strdup_printf ("%s/", g_get_home_dir ());
    gtk_file_selection_set_filename (fs, path);
    g_free (path);
    
    g_signal_connect (fs->ok_button, "clicked", G_CALLBACK (save_ok), &filename);
    g_signal_connect (fs->cancel_button, "clicked", G_CALLBACK (gtk_main_quit), NULL);
    
    gtk_widget_show (GTK_WIDGET (fs));
    gtk_grab_add (GTK_WIDGET (fs));
    gtk_main ();
    
    gtk_widget_destroy (GTK_WIDGET (fs));
    
    return filename;
}