path: root/calendar/gui/dialogs/comp-editor.c

/* Evolution calendar - Framework for a calendar component editor dialog
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Author: Federico Mena-Quintero <federico@ximian.com>
 *
 * 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.
 */

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

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <glib.h>
#include <gdk/gdkkeysyms.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-uidefs.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnomeui/gnome-window-icon.h>
#include <bonobo/bonobo-ui-container.h>
#include <bonobo/bonobo-ui-util.h>
#include <gal/widgets/e-unicode.h>
#include <evolution-shell-component-utils.h>
#include "../print.h"
#include "save-comp.h"
#include "delete-comp.h"
#include "send-comp.h"
#include "changed-comp.h"
#include "comp-editor.h"



/* Private part of the CompEditor structure */
struct _CompEditorPrivate {
    /* Client to use */
    CalClient *client;

    /* Calendar object/uid we are editing; this is an internal copy */
    CalComponent *comp;

    /* The pages we have */
    GList *pages;

    /* UI Component for the dialog */
    BonoboUIComponent *uic;

    /* Notebook to hold the pages */
    GtkNotebook *notebook;

    GtkWidget *filesel;

    gboolean changed;
    gboolean needs_send;
    gboolean needs_send_new;
    gboolean updating;
};



static void comp_editor_class_init (CompEditorClass *class);
static void comp_editor_init (CompEditor *editor);
static gint comp_editor_key_press_event (GtkWidget *d, GdkEventKey *e);
static void comp_editor_destroy (GtkObject *object);

static void real_set_cal_client (CompEditor *editor, CalClient *client);
static void real_edit_comp (CompEditor *editor, CalComponent *comp);
static void real_send_comp (CompEditor *editor, CalComponentItipMethod method);
static gboolean prompt_to_save_changes (CompEditor *editor, gboolean send);
static void delete_comp (CompEditor *editor);
static void close_dialog (CompEditor *editor);

static void page_changed_cb (GtkObject *obj, gpointer data);
static void page_summary_changed_cb (GtkObject *obj, const char *summary, gpointer data);
static void page_dates_changed_cb (GtkObject *obj, CompEditorPageDates *dates, gpointer data);

static void obj_updated_cb (CalClient *client, const char *uid, gpointer data);
static void obj_removed_cb (CalClient *client, const char *uid, gpointer data);

static void save_cmd (GtkWidget *widget, gpointer data);
static void save_close_cmd (GtkWidget *widget, gpointer data);
static void save_as_cmd (GtkWidget *widget, gpointer data);
static void delete_cmd (GtkWidget *widget, gpointer data);
static void print_cmd (GtkWidget *widget, gpointer data);
static void print_preview_cmd (GtkWidget *widget, gpointer data);
static void print_setup_cmd (GtkWidget *widget, gpointer data);
static void close_cmd (GtkWidget *widget, gpointer data);

static gint delete_event_cb (GtkWidget *widget, GdkEvent *event, gpointer data);

static EPixmap pixmaps [] =
{
    E_PIXMAP ("/menu/File/FileSave",            "save-16.png"),
    E_PIXMAP ("/menu/File/FileSaveAndClose",        "save-16.png"),
    E_PIXMAP ("/menu/File/FileSaveAs",          "save-as-16.png"),

    E_PIXMAP ("/menu/File/FileDelete",          "evolution-trash-mini.png"),

    E_PIXMAP ("/menu/File/FilePrint",           "print.xpm"),
    E_PIXMAP ("/menu/File/FilePrintPreview",        "print-preview.xpm"),

    E_PIXMAP ("/Toolbar/FileSaveAndClose",              "buttons/save-24.png"),
    E_PIXMAP ("/Toolbar/FilePrint",                 "buttons/print.png"),
    E_PIXMAP ("/Toolbar/FileDelete",            "buttons/delete-message.png"),

    E_PIXMAP_END
};

static BonoboUIVerb verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("FileSave", save_cmd),
    BONOBO_UI_UNSAFE_VERB ("FileSaveAndClose", save_close_cmd),
    BONOBO_UI_UNSAFE_VERB ("FileSaveAs", save_as_cmd),
    BONOBO_UI_UNSAFE_VERB ("FileDelete", delete_cmd),
    BONOBO_UI_UNSAFE_VERB ("FilePrint", print_cmd),
    BONOBO_UI_UNSAFE_VERB ("FilePrintPreview", print_preview_cmd),
    BONOBO_UI_UNSAFE_VERB ("FilePrintSetup", print_setup_cmd),
    BONOBO_UI_UNSAFE_VERB ("FileClose", close_cmd),

    BONOBO_UI_VERB_END
};

static GtkObjectClass *parent_class;



GtkType
comp_editor_get_type (void)
{
    static GtkType comp_editor_type = 0;

    if (!comp_editor_type) {
        static const GtkTypeInfo comp_editor_info = {
            "CompEditor",
            sizeof (CompEditor),
            sizeof (CompEditorClass),
            (GtkClassInitFunc) comp_editor_class_init,
            (GtkObjectInitFunc) comp_editor_init,
            NULL, /* reserved_1 */
            NULL, /* reserved_2 */
            (GtkClassInitFunc) NULL
        };

        comp_editor_type = gtk_type_unique (BONOBO_TYPE_WINDOW,
                            &comp_editor_info);
    }

    return comp_editor_type;
}

/* Class initialization function for the calendar component editor */
static void
comp_editor_class_init (CompEditorClass *klass)
{
    GtkObjectClass *object_class;
    GtkWidgetClass *widget_class;

    object_class = GTK_OBJECT_CLASS (klass);
    widget_class = GTK_WIDGET_CLASS (klass);

    parent_class = gtk_type_class (BONOBO_TYPE_WINDOW);

    klass->set_cal_client = real_set_cal_client;
    klass->edit_comp = real_edit_comp;
    klass->send_comp = real_send_comp;

    widget_class->key_press_event = comp_editor_key_press_event;
    object_class->destroy = comp_editor_destroy;
}

/* Creates the basic in the editor */
static void
setup_widgets (CompEditor *editor)
{
    CompEditorPrivate *priv;
    BonoboUIContainer *container;
    GtkWidget *vbox;

    priv = editor->priv;

    /* Window and basic vbox */
    bonobo_window_construct (BONOBO_WINDOW (editor),
                 "event-editor", "iCalendar Editor");
    gtk_signal_connect (GTK_OBJECT (editor), "delete_event",
                GTK_SIGNAL_FUNC (delete_event_cb), editor);

    priv->uic = bonobo_ui_component_new_default ();
    container = bonobo_ui_container_new ();
    bonobo_ui_container_set_win (container, BONOBO_WINDOW (editor));
    bonobo_ui_component_set_container (priv->uic, BONOBO_OBJREF (container));
    bonobo_ui_engine_config_set_path (bonobo_window_get_ui_engine (BONOBO_WINDOW (editor)),
                      "/evolution/UIConf/kvps");

    bonobo_ui_component_add_verb_list_with_data (priv->uic, verbs, editor);
    bonobo_ui_util_set_ui (priv->uic, EVOLUTION_DATADIR,
                   "evolution-comp-editor.xml",
                   "evolution-calendar");
    e_pixmaps_update (priv->uic, pixmaps);

    vbox = gtk_vbox_new (FALSE, GNOME_PAD_SMALL);
    gtk_widget_show (vbox);
    gtk_container_set_border_width (GTK_CONTAINER (vbox), GNOME_PAD_SMALL);
    bonobo_window_set_contents (BONOBO_WINDOW (editor), vbox);

    /* Notebook */
    priv->notebook = GTK_NOTEBOOK (gtk_notebook_new ());
    gtk_widget_show (GTK_WIDGET (priv->notebook));
    gtk_box_pack_start (GTK_BOX (vbox), GTK_WIDGET (priv->notebook),
                TRUE, TRUE, 0);
}

/* Object initialization function for the calendar component editor */
static void
comp_editor_init (CompEditor *editor)
{
    CompEditorPrivate *priv;

    priv = g_new0 (CompEditorPrivate, 1);
    editor->priv = priv;

    setup_widgets (editor);

    priv->pages = NULL;
    priv->changed = FALSE;
    priv->needs_send = FALSE;
    priv->needs_send_new = FALSE;
}


static gint
comp_editor_key_press_event (GtkWidget *d, GdkEventKey *e)
{
    if (e->keyval == GDK_Escape) {
        if (prompt_to_save_changes (COMP_EDITOR (d), TRUE))
            close_dialog (COMP_EDITOR (d));
        return TRUE;
    }

    if (GTK_WIDGET_CLASS (parent_class)->key_press_event)
        return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (d, e);

    return FALSE;
}

/* Destroy handler for the calendar component editor */
static void
comp_editor_destroy (GtkObject *object)
{
    CompEditor *editor;
    CompEditorPrivate *priv;
    GList *l;

    editor = COMP_EDITOR (object);
    priv = editor->priv;

    gtk_signal_disconnect_by_data (GTK_OBJECT (priv->client), editor);

    /* We want to destroy the pages after the widgets get destroyed,
       since they have lots of signal handlers connected to the widgets
       with the pages as the data. */
    for (l = priv->pages; l != NULL; l = l->next)
        gtk_object_unref (GTK_OBJECT (l->data));

    if (priv->comp) {
        gtk_object_unref (GTK_OBJECT (priv->comp));
        priv->comp = NULL;
    }

    g_free (priv);
    editor->priv = NULL;

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


static gboolean
save_comp (CompEditor *editor)
{
    CompEditorPrivate *priv;
    CalComponent *clone;
    GList *l;

    priv = editor->priv;

    if (!priv->changed)
        return TRUE;

    clone = cal_component_clone (priv->comp);
    for (l = priv->pages; l != NULL; l = l->next) {
        if (!comp_editor_page_fill_component (l->data, clone)) {
            gtk_object_unref (GTK_OBJECT (clone));
            return FALSE;
        }
    }
    cal_component_commit_sequence (clone);
    gtk_object_unref (GTK_OBJECT (priv->comp));
    priv->comp = clone;

    priv->updating = TRUE;

    if (!cal_client_update_object (priv->client, priv->comp)) {
        GtkWidget *dlg;

        dlg = gnome_error_dialog (_("Could not update object!"));
        gnome_dialog_run_and_close (GNOME_DIALOG (dlg));

        return FALSE;
    } else {
        priv->changed = FALSE;
    }

    priv->updating = FALSE;

    return TRUE;
}

static gboolean
save_comp_with_send (CompEditor *editor)
{
    CompEditorPrivate *priv;
    gboolean send;

    priv = editor->priv;

    send = priv->changed && priv->needs_send;

    if (!save_comp (editor))
        return FALSE;

    if (send && send_component_dialog (priv->comp, priv->needs_send_new))
        comp_editor_send_comp (editor, CAL_COMPONENT_METHOD_REQUEST);

    return TRUE;
}

static void
delete_comp (CompEditor *editor)
{
    CompEditorPrivate *priv;
    const char *uid;

    priv = editor->priv;

    cal_component_get_uid (priv->comp, &uid);
    priv->updating = TRUE;
    cal_client_remove_object (priv->client, uid);
    priv->updating = FALSE;
    close_dialog (editor);
}

static gboolean
prompt_to_save_changes (CompEditor *editor, gboolean send)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    if (!priv->changed)
        return TRUE;

    switch (save_component_dialog (GTK_WINDOW (editor))) {
    case 0: /* Save */
        if (send && save_comp_with_send (editor))
            return TRUE;
        else if (!send && save_comp (editor))
            return TRUE;
        else
            return FALSE;
    case 1: /* Discard */
        return TRUE;
    case 2: /* Cancel */
    default:
        return FALSE;
    }
}

/* Closes the dialog box and emits the appropriate signals */
static void
close_dialog (CompEditor *editor)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    gtk_object_destroy (GTK_OBJECT (editor));
}



/**
 * comp_editor_set_changed:
 * @editor: A component editor
 * @changed: Value to set the changed state to
 *
 * Set the dialog changed state to the given value
 **/
void
comp_editor_set_changed (CompEditor *editor, gboolean changed)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    priv->changed = changed;
}

/**
 * comp_editor_get_changed:
 * @editor: A component editor
 *
 * Gets the changed state of the dialog
 *
 * Return value: A boolean indicating if the dialog is in a changed
 * state
 **/
gboolean
comp_editor_get_changed (CompEditor *editor)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    return priv->changed;
}

/**
 * comp_editor_set_needs_send:
 * @editor: A component editor
 * @needs_send: Value to set the needs send state to
 *
 * Set the dialog needs send state to the given value
 **/
void
comp_editor_set_needs_send (CompEditor *editor, gboolean needs_send)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    priv->needs_send = needs_send;
}

/**
 * comp_editor_get_needs_send:
 * @editor: A component editor
 *
 * Gets the needs send state of the dialog
 *
 * Return value: A boolean indicating if the dialog is in a needs send
 * state
 **/
gboolean
comp_editor_get_needs_send (CompEditor *editor)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    return priv->needs_send;
}

static void page_mapped_cb (GtkWidget *page_widget,
                CompEditorPage *page)
{
    GtkWidget *toplevel;

    toplevel = gtk_widget_get_toplevel (page_widget);
    if (!GTK_IS_WINDOW (toplevel))
        return;

    if (page->accel_group) {
        gtk_window_add_accel_group (GTK_WINDOW (toplevel),
                        page->accel_group);
    }
}

static void page_unmapped_cb (GtkWidget *page_widget,
                  CompEditorPage *page)
{
    GtkWidget *toplevel;

    toplevel = gtk_widget_get_toplevel (page_widget);
    if (!GTK_IS_WINDOW (toplevel))
        return;

    if (page->accel_group) {
        gtk_window_remove_accel_group (GTK_WINDOW (toplevel),
                           page->accel_group);
    }
}

/**
 * comp_editor_append_page:
 * @editor: A component editor
 * @page: A component editor page
 * @label: Label of the page
 *
 * Appends a page to the editor notebook with the given label
 **/
void
comp_editor_append_page (CompEditor *editor,
             CompEditorPage *page,
             const char *label)
{
    CompEditorPrivate *priv;
    GtkWidget *page_widget;
    GtkWidget *label_widget;
    gboolean is_first_page;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));
    g_return_if_fail (page != NULL);
    g_return_if_fail (IS_COMP_EDITOR_PAGE (page));
    g_return_if_fail (label != NULL);

    priv = editor->priv;

    gtk_object_ref (GTK_OBJECT (page));

    /* If we are editing something, fill the widgets with current info */
    if (priv->comp != NULL) {
        CalComponent *comp;

        comp = comp_editor_get_current_comp (editor);
        comp_editor_page_fill_widgets (page, comp);
        gtk_object_unref (GTK_OBJECT (comp));
    }

    page_widget = comp_editor_page_get_widget (page);
    g_assert (page_widget != NULL);

    label_widget = gtk_label_new (label);

    is_first_page = (priv->pages == NULL);

    priv->pages = g_list_append (priv->pages, page);
    gtk_notebook_append_page (priv->notebook, page_widget, label_widget);

    /* Listen for things happening on the page */
    gtk_signal_connect (GTK_OBJECT (page), "changed",
                GTK_SIGNAL_FUNC (page_changed_cb), editor);
    gtk_signal_connect (GTK_OBJECT (page), "summary_changed",
                GTK_SIGNAL_FUNC (page_summary_changed_cb), editor);
    gtk_signal_connect (GTK_OBJECT (page), "dates_changed",
                GTK_SIGNAL_FUNC (page_dates_changed_cb), editor);

    /* Listen for when the page is mapped/unmapped so we can
       install/uninstall the appropriate GtkAccelGroup. */
    gtk_signal_connect (GTK_OBJECT (page_widget), "map",
                GTK_SIGNAL_FUNC (page_mapped_cb), page);
    gtk_signal_connect (GTK_OBJECT (page_widget), "unmap",
                GTK_SIGNAL_FUNC (page_unmapped_cb), page);

    /* The first page is the main page of the editor, so we ask it to focus
     * its main widget.
     */
    if (is_first_page)
        comp_editor_page_focus_main_widget (page);
}

/**
 * comp_editor_remove_page:
 * @editor: A component editor
 * @page: A component editor page
 *
 * Removes the page from the component editor
 **/
void
comp_editor_remove_page (CompEditor *editor, CompEditorPage *page)
{
    CompEditorPrivate *priv;
    GtkWidget *page_widget;
    gint page_num;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));
    g_return_if_fail (page != NULL);
    g_return_if_fail (IS_COMP_EDITOR_PAGE (page));

    priv = editor->priv;

    page_widget = comp_editor_page_get_widget (page);
    page_num = gtk_notebook_page_num (priv->notebook, page_widget);
    if (page_num == -1)
        return;
    
    /* Disconnect all the signals added in append_page(). */
    gtk_signal_disconnect_by_data (GTK_OBJECT (page), editor);
    gtk_signal_disconnect_by_data (GTK_OBJECT (page_widget), page);

    gtk_notebook_remove_page (priv->notebook, page_num);

    priv->pages = g_list_remove (priv->pages, page);
    gtk_object_unref (GTK_OBJECT (page));
}

/**
 * comp_editor_show_page:
 * @editor:
 * @page:
 *
 *
 **/
void
comp_editor_show_page (CompEditor *editor, CompEditorPage *page)
{
    CompEditorPrivate *priv;
    GtkWidget *page_widget;
    gint page_num;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));
    g_return_if_fail (page != NULL);
    g_return_if_fail (IS_COMP_EDITOR_PAGE (page));

    priv = editor->priv;

    page_widget = comp_editor_page_get_widget (page);
    page_num = gtk_notebook_page_num (priv->notebook, page_widget);
    gtk_notebook_set_page (priv->notebook, page_num);
}

/**
 * comp_editor_set_cal_client:
 * @editor: A component editor
 * @client: The calendar client to use
 *
 * Sets the calendar client used by the editor to update components
 **/
void
comp_editor_set_cal_client (CompEditor *editor, CalClient *client)
{
    CompEditorClass *klass;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    klass = COMP_EDITOR_CLASS (GTK_OBJECT (editor)->klass);

    if (klass->set_cal_client)
        klass->set_cal_client (editor, client);
}

/**
 * comp_editor_get_cal_client:
 * @editor: A component editor
 *
 * Returns the calendar client of the editor
 *
 * Return value: The calendar client of the editor
 **/
CalClient *
comp_editor_get_cal_client (CompEditor *editor)
{
    CompEditorPrivate *priv;

    g_return_val_if_fail (editor != NULL, NULL);
    g_return_val_if_fail (IS_COMP_EDITOR (editor), NULL);

    priv = editor->priv;

    return priv->client;
}

/* Creates an appropriate title for the event editor dialog */
static char *
make_title_from_comp (CalComponent *comp)
{
    char *title;
    const char *type_string;
    CalComponentVType type;
    CalComponentText text;

    if (!comp)
        return g_strdup (_("Edit Appointment"));

    type = cal_component_get_vtype (comp);
    switch (type) {
    case CAL_COMPONENT_EVENT:
        type_string = _("Appointment - %s");
        break;
    case CAL_COMPONENT_TODO:
        type_string = _("Task - %s");
        break;
    case CAL_COMPONENT_JOURNAL:
        type_string = _("Journal entry - %s");
        break;
    default:
        g_message ("make_title_from_comp(): Cannot handle object of type %d", type);
        return NULL;
    }

    cal_component_get_summary (comp, &text);
    if (text.value) {
        char *summary;
        summary = e_utf8_to_locale_string (text.value);
        title = g_strdup_printf (type_string, summary);
        g_free (summary);
    } else
        title = g_strdup_printf (type_string, _("No summary"));

    return title;
}

static const char *
make_icon_from_comp (CalComponent *comp)
{
    CalComponentVType type;

    if (!comp)
        return EVOLUTION_ICONSDIR "/evolution-calendar-mini.png";

    type = cal_component_get_vtype (comp);
    switch (type) {
    case CAL_COMPONENT_EVENT:
        return EVOLUTION_ICONSDIR "/buttons/new_appointment.png";
        break;
    case CAL_COMPONENT_TODO:
        return EVOLUTION_ICONSDIR "/buttons/new_task.png";
        break;
    default:
        return EVOLUTION_ICONSDIR "/evolution-calendar-mini.png";
    }
}

/* Sets the event editor's window title from a calendar component */
static void
set_title_from_comp (CompEditor *editor)
{
    CompEditorPrivate *priv;
    char *title;

    priv = editor->priv;
    title = make_title_from_comp (priv->comp);
    gtk_window_set_title (GTK_WINDOW (editor), title);
    g_free (title);
}

static void
set_icon_from_comp (CompEditor *editor)
{
    CompEditorPrivate *priv;
    const char *file;

    priv = editor->priv;
    file = make_icon_from_comp (priv->comp);
    gnome_window_icon_set_from_file (GTK_WINDOW (editor), file);
}

static void
fill_widgets (CompEditor *editor)
{
    CompEditorPrivate *priv;
    GList *l;

    priv = editor->priv;

    for (l = priv->pages; l != NULL; l = l->next)
        comp_editor_page_fill_widgets (l->data, priv->comp);
}

static void
real_set_cal_client (CompEditor *editor, CalClient *client)
{
    CompEditorPrivate *priv;
    GList *elem;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    if (client == priv->client)
        return;

    if (client) {
        g_return_if_fail (IS_CAL_CLIENT (client));
        g_return_if_fail (cal_client_get_load_state (client) ==
                  CAL_CLIENT_LOAD_LOADED);
        gtk_object_ref (GTK_OBJECT (client));
    }

    if (priv->client) {
        gtk_signal_disconnect_by_data (GTK_OBJECT (priv->client),
                           editor);
        gtk_object_unref (GTK_OBJECT (priv->client));
    }

    priv->client = client;

    /* Pass the client to any pages that need it. */
    for (elem = priv->pages; elem; elem = elem->next)
        comp_editor_page_set_cal_client (elem->data, client);

    gtk_signal_connect (GTK_OBJECT (priv->client), "obj_updated",
                GTK_SIGNAL_FUNC (obj_updated_cb), editor);

    gtk_signal_connect (GTK_OBJECT (priv->client), "obj_removed",
                GTK_SIGNAL_FUNC (obj_removed_cb), editor);
}

static void
real_edit_comp (CompEditor *editor, CalComponent *comp)
{
    CompEditorPrivate *priv;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    if (priv->comp) {
        gtk_object_unref (GTK_OBJECT (priv->comp));
        priv->comp = NULL;
    }

    if (comp)
        priv->comp = cal_component_clone (comp);

    priv->needs_send_new = !priv->needs_send;
    
    set_title_from_comp (editor);
    set_icon_from_comp (editor);
    fill_widgets (editor);
}


static void
real_send_comp (CompEditor *editor, CalComponentItipMethod method)
{
    CompEditorPrivate *priv;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    itip_send_comp (method, priv->comp, priv->client, NULL);
}


/**
 * comp_editor_edit_comp:
 * @editor: A component editor
 * @comp: A calendar component
 *
 * Starts the editor editing the given component
 **/
void
comp_editor_edit_comp (CompEditor *editor, CalComponent *comp)
{
    CompEditorClass *klass;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));
    g_return_if_fail (comp != NULL);
    g_return_if_fail (IS_CAL_COMPONENT (comp));

    klass = COMP_EDITOR_CLASS (GTK_OBJECT (editor)->klass);

    if (klass->edit_comp)
        klass->edit_comp (editor, comp);
}

CalComponent *
comp_editor_get_current_comp (CompEditor *editor)
{
    CompEditorPrivate *priv;
    CalComponent *comp;
    GList *l;

    g_return_val_if_fail (editor != NULL, NULL);
    g_return_val_if_fail (IS_COMP_EDITOR (editor), NULL);

    priv = editor->priv;

    comp = cal_component_clone (priv->comp);
    if (priv->changed) {
        for (l = priv->pages; l != NULL; l = l->next)
            comp_editor_page_fill_component (l->data, comp);
    }

    return comp;
}

/**
 * comp_editor_save_comp:
 * @editor:
 *
 *
 **/
gboolean
comp_editor_save_comp (CompEditor *editor, gboolean send)
{
    return prompt_to_save_changes (editor, send);
}

/**
 * comp_editor_delete_comp:
 * @editor:
 *
 *
 **/
void
comp_editor_delete_comp (CompEditor *editor)
{
    delete_comp (editor);
}

/**
 * comp_editor_send_comp:
 * @editor:
 * @method:
 *
 *
 **/
void
comp_editor_send_comp (CompEditor *editor, CalComponentItipMethod method)
{
    CompEditorClass *klass;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    klass = COMP_EDITOR_CLASS (GTK_OBJECT (editor)->klass);

    if (klass->send_comp)
        klass->send_comp (editor, method);
}

/**
 * comp_editor_merge_ui:
 * @editor:
 * @filename:
 * @verbs:
 *
 *
 **/
void
comp_editor_merge_ui (CompEditor *editor, const char *filename, BonoboUIVerb *verbs)
{
    CompEditorPrivate *priv;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    bonobo_ui_util_set_ui (priv->uic, EVOLUTION_DATADIR, filename, "evolution-calendar");
    bonobo_ui_component_add_verb_list_with_data (priv->uic, verbs, editor);
}

/**
 * comp_editor_set_ui_prop:
 * @editor:
 * @path:
 * @attr:
 * @val:
 *
 *
 **/
void
comp_editor_set_ui_prop (CompEditor *editor,
             const char *path,
             const char *attr,
             const char *val)
{
    CompEditorPrivate *priv;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    bonobo_ui_component_set_prop (priv->uic, path, attr, val, NULL);
}


/* Brings attention to a window by raising it and giving it focus */
static void
raise_and_focus (GtkWidget *widget)
{
    g_assert (GTK_WIDGET_REALIZED (widget));
    gdk_window_show (widget->window);
    gtk_widget_grab_focus (widget);
}

/**
 * comp_editor_focus:
 * @editor: A component editor
 *
 * Brings the editor window to the front and gives it focus
 **/
void
comp_editor_focus (CompEditor *editor)
{
    CompEditorPrivate *priv;

    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = editor->priv;

    gtk_widget_show (GTK_WIDGET (editor));
    raise_and_focus (GTK_WIDGET (editor));
}

/* This sets the focus to the toplevel, so any field being edited is committed.
   FIXME: In future we may also want to check some of the fields are valid,
   e.g. the EDateEdit fields. */
static void
commit_all_fields (CompEditor *editor)
{
    CompEditorPrivate *priv;

    priv = editor->priv;

    gtk_window_set_focus (GTK_WINDOW (editor), NULL);
}

/* Menu Commands */
static void
save_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);

    commit_all_fields (editor);

    save_comp_with_send (editor);
}

static void
save_close_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);

    commit_all_fields (editor);

    if (save_comp_with_send (editor))
        close_dialog (editor);
}

static void
save_as_ok (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    struct stat s;
    char *path;
    int ret = 0;

    priv = editor->priv;

    path = gtk_file_selection_get_filename (GTK_FILE_SELECTION (priv->filesel));

    if (stat (path, &s) == 0) {
        GtkWidget *dlg;
        GtkWidget *text;

        dlg = gnome_dialog_new (_("Overwrite file?"),
                    GNOME_STOCK_BUTTON_YES,
                    GNOME_STOCK_BUTTON_NO,
                    NULL);
        text = gtk_label_new (_("A file by that name already exists.\nOverwrite it?"));
        gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dlg)->vbox), text, TRUE, TRUE, 4);
        gtk_window_set_policy (GTK_WINDOW (dlg), FALSE, TRUE, FALSE);
        gtk_widget_show (text);

        ret = gnome_dialog_run_and_close (GNOME_DIALOG (dlg));
    }

    if (ret == 0) {
        FILE *file;
        gchar *ical_string;

        ical_string = cal_client_get_component_as_string (priv->client, priv->comp);
        if (ical_string == NULL) {
            g_warning ("Couldn't convert item to a string");
            gtk_main_quit ();
            return;
        }

        file = fopen (path, "w");
        if (file == NULL) {
            g_warning ("Couldn't save item");
            gtk_main_quit ();
            return;
        }

        fprintf (file, ical_string);
        g_free (ical_string);
        fclose (file);

        gtk_main_quit ();
    }
}

static void
save_as_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    GtkFileSelection *fs;
    char *path;

    priv = editor->priv;

    commit_all_fields (editor);

    fs = GTK_FILE_SELECTION (gtk_file_selection_new (_("Save As...")));
    path = g_strdup_printf ("%s/", g_get_home_dir ());
    gtk_file_selection_set_filename (fs, path);
    g_free (path);

    gtk_signal_connect (GTK_OBJECT (fs->ok_button), "clicked",
                GTK_SIGNAL_FUNC (save_as_ok), editor);
    gtk_signal_connect (GTK_OBJECT (fs->cancel_button), "clicked",
                GTK_SIGNAL_FUNC (gtk_main_quit), NULL);

    priv->filesel = GTK_WIDGET (fs);
    gtk_widget_show (priv->filesel);
    gtk_grab_add (priv->filesel);
    gtk_main ();

    gtk_widget_destroy (priv->filesel);
    priv->filesel = NULL;
}

static void
delete_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    CalComponentVType vtype;

    priv = editor->priv;

    vtype = cal_component_get_vtype (priv->comp);

    if (delete_component_dialog (priv->comp, FALSE, 1, vtype, GTK_WIDGET (editor)))
        delete_comp (editor);
}

static void
print_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CalComponent *comp;

    commit_all_fields (editor);

    comp = comp_editor_get_current_comp (editor);
    print_comp (comp, editor->priv->client, FALSE);
    gtk_object_unref (GTK_OBJECT (comp));
}

static void
print_preview_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CalComponent *comp;

    commit_all_fields (editor);

    comp = comp_editor_get_current_comp (editor);
    print_comp (comp, editor->priv->client, TRUE);
    gtk_object_unref (GTK_OBJECT (comp));
}

static void
print_setup_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;

    priv = editor->priv;

    print_setup ();
}

static void
close_cmd (GtkWidget *widget, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);

    commit_all_fields (editor);

    if (prompt_to_save_changes (editor, TRUE))
        close_dialog (editor);
}

static void
page_changed_cb (GtkObject *obj, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;

    priv = editor->priv;

    priv->changed = TRUE;
}

/* Page signal callbacks */
static void
page_summary_changed_cb (GtkObject *obj, const char *summary, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    GList *l;

    priv = editor->priv;

    for (l = priv->pages; l != NULL; l = l->next)
        if (obj != l->data)
            comp_editor_page_set_summary (l->data, summary);

    priv->changed = TRUE;
}

static void
page_dates_changed_cb (GtkObject *obj,
               CompEditorPageDates *dates,
               gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    GList *l;

    priv = editor->priv;

    for (l = priv->pages; l != NULL; l = l->next)
        if (obj != l->data)
            comp_editor_page_set_dates (l->data, dates);

    priv->changed = TRUE;
}

static void
obj_updated_cb (CalClient *client, const char *uid, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    CalComponent *comp = NULL;
    CalClientGetStatus status;
    const char *edit_uid;

    priv = editor->priv;

    cal_component_get_uid (priv->comp, &edit_uid);

    if (!strcmp (uid, edit_uid) && !priv->updating) {
        if (changed_component_dialog (priv->comp, FALSE, priv->changed)) {
            status = cal_client_get_object (priv->client, uid, &comp);
            if (status == CAL_CLIENT_GET_SUCCESS) {
                comp_editor_edit_comp (editor, comp);
                gtk_object_unref (GTK_OBJECT (comp));
            } else {
                GtkWidget *dlg;

                dlg = gnome_error_dialog (_("Unable to obtain current version!"));
                gnome_dialog_run_and_close (GNOME_DIALOG (dlg));
            }
        }
    }
}

static void
obj_removed_cb (CalClient *client, const char *uid, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);
    CompEditorPrivate *priv;
    const char *edit_uid;

    priv = editor->priv;

    cal_component_get_uid (priv->comp, &edit_uid);

    if (!strcmp (uid, edit_uid) && !priv->updating) {
        if (changed_component_dialog (priv->comp, TRUE, priv->changed))
            close_dialog (editor);
    }
}

static gint
delete_event_cb (GtkWidget *widget, GdkEvent *event, gpointer data)
{
    CompEditor *editor = COMP_EDITOR (data);

    if (prompt_to_save_changes (editor, TRUE))
        close_dialog (editor);

    return TRUE;
}