path: root/widgets/menus/gal-view-menus.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * gal-view-menus.c: Deploy a GalViewCollection in the menus.
 *
 * Author:
 *   Chris Lahey <clahey@ximian.com>
 *
 * (C) 2000, 2001 Ximian, Inc.
 */

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

#include "gal-view-menus.h"

#include <stdlib.h>
#include <string.h>
#include <gtk/gtksignal.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnome/gnome-i18n.h>
#include <bonobo/bonobo-ui-util.h>
#include <e-util/e-util.h>
#include <e-util/e-xml-utils.h>
#include <widgets/menus/gal-define-views-dialog.h>
#include <bonobo/bonobo-ui-util.h>
#include <e-util/e-list.h>

struct _GalViewMenusPrivate {
    GalViewInstance *instance;
    int collection_changed_id;
    int instance_changed_id;
    BonoboUIComponent *component;
    EList *listenerClosures;
    GtkWidget *define_views_dialog;

    guint show_define_views : 1;
};

typedef struct {
    GalViewInstance *instance;
    char *id;
    int ref_count;
} ListenerClosure;

static void collection_changed (GalViewCollection *collection,
                GalViewMenus *gvm);
static void instance_changed (GalViewInstance *instance,
                  GalViewMenus *gvm);

#define d(x)
#define CURRENT_VIEW_PATH "/menu/View/ViewBegin/CurrentView"

G_DEFINE_TYPE(GalViewMenus, gal_view_menus, G_TYPE_OBJECT);

static void
closure_free (void *data, void *user_data)
{
    ListenerClosure *closure = data;
    GalViewMenus *gvm = user_data;

    closure->ref_count --;
    if (closure->ref_count == 0) {
        g_object_unref (closure->instance);

        bonobo_ui_component_remove_listener (gvm->priv->component, closure->id);
        g_free (closure);
    }
}

static void *
closure_copy (const void *data, void *user_data)
{
    ListenerClosure *closure = (void *) data;

    closure->ref_count ++;
    return closure;
}

static void
remove_listeners (GalViewMenus *gvm)
{
    if (gvm->priv->listenerClosures)
        g_object_unref (gvm->priv->listenerClosures);

    gvm->priv->listenerClosures = NULL;
}

static void
remove_xml (GalViewMenus *gvm)
{
}

static void
remove_instance (GalViewMenus *gvm)
{
    if (gvm->priv->instance) {
        if (gvm->priv->instance_changed_id != 0)
            g_signal_handler_disconnect (gvm->priv->instance, gvm->priv->instance_changed_id);
        
        if (gvm->priv->instance->collection && gvm->priv->collection_changed_id != 0)
            g_signal_handler_disconnect (gvm->priv->instance->collection, gvm->priv->collection_changed_id);
    }

    gvm->priv->instance_changed_id = 0;
    gvm->priv->collection_changed_id = 0;

    if (gvm->priv->instance) {
        g_object_unref (gvm->priv->instance);
        gvm->priv->instance = NULL;
    }

        remove_listeners(gvm);
    remove_xml(gvm);
}

static void
add_instance (GalViewMenus *gvm,
          GalViewInstance *instance)
{
    g_object_ref (instance);

    if (gvm->priv->instance != NULL)
        remove_instance (gvm);

    gvm->priv->instance = instance;

    gal_view_instance_load (gvm->priv->instance);

    gvm->priv->instance_changed_id = g_signal_connect (instance, "changed",
                               G_CALLBACK (instance_changed), gvm);
    gvm->priv->collection_changed_id = g_signal_connect (instance->collection, "changed",
                                 G_CALLBACK (collection_changed), gvm);
}

static void
clear_define_views_dialog (gpointer data,
               GObject *where_the_object_was)
{
    GalViewMenus *gvm = GAL_VIEW_MENUS (data);
    gvm->priv->define_views_dialog = NULL;
}

static void
gal_view_menus_finalize (GObject *object)
{
    GalViewMenus *gvm = GAL_VIEW_MENUS (object);

    remove_instance (gvm);

    gal_view_menus_unmerge (gvm, NULL);

    if (gvm->priv->component)
        bonobo_object_unref (gvm->priv->component);
    
    if (gvm->priv->define_views_dialog)
        g_object_weak_unref (G_OBJECT (gvm->priv->define_views_dialog), clear_define_views_dialog, gvm);

    g_free(gvm->priv);

    (* G_OBJECT_CLASS (gal_view_menus_parent_class)->finalize) (object);
}

static void
gal_view_menus_class_init (GalViewMenusClass *gvm_class)
{
    GObjectClass *object_class = G_OBJECT_CLASS (gvm_class);

    object_class->finalize = gal_view_menus_finalize;
}

static void
gal_view_menus_init (GalViewMenus *gvm)
{
    gvm->priv                        = g_new(GalViewMenusPrivate, 1);
    gvm->priv->instance              = NULL;
    gvm->priv->collection_changed_id = 0;
    gvm->priv->instance_changed_id   = 0;
    gvm->priv->component             = NULL;
    gvm->priv->listenerClosures      = NULL;
    gvm->priv->define_views_dialog   = NULL;
    gvm->priv->show_define_views     = TRUE;
}

GalViewMenus *
gal_view_menus_new (GalViewInstance *instance)
{
    GalViewMenus *gvm;

    g_return_val_if_fail (instance != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW_INSTANCE (instance), NULL);

    gvm = g_object_new (GAL_VIEW_MENUS_TYPE, NULL);
    gal_view_menus_construct(gvm, instance);

    return gvm;
}

GalViewMenus *
gal_view_menus_construct (GalViewMenus      *gvm,
              GalViewInstance *instance)
{
    g_return_val_if_fail (gvm != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW_MENUS (gvm), NULL);
    g_return_val_if_fail (instance != NULL, NULL);
    g_return_val_if_fail (GAL_IS_VIEW_INSTANCE (instance), NULL);

    add_instance (gvm, instance);

    return gvm;
}

static void
dialog_response(GtkWidget *dialog, int id, GalViewMenus *menus)
{
    if (id == GTK_RESPONSE_OK) {
        gal_view_collection_save(menus->priv->instance->collection);
    }
    gtk_widget_destroy(dialog);
}

static void
define_views(BonoboUIComponent *component,
         GalViewMenus      *menus,
         char              *cname)
{
    if (menus->priv->define_views_dialog) {
        gdk_window_raise (menus->priv->define_views_dialog->window);
    } else {
        GtkWidget *dialog = gal_define_views_dialog_new(menus->priv->instance->collection);

        g_signal_connect (dialog, "response", G_CALLBACK (dialog_response), menus);
        menus->priv->define_views_dialog = dialog;
        g_object_weak_ref (G_OBJECT (dialog), clear_define_views_dialog, menus);
        gtk_widget_show(dialog);
    }
}

static void
save_current_view(BonoboUIComponent *component,
          GalViewMenus      *menus,
          char              *cname)
{
    gal_view_instance_save_as (menus->priv->instance);
}

static void
toggled_cb (BonoboUIComponent *component,
        const char *path,
        Bonobo_UIComponent_EventType type,
        const char *state,
        gpointer user_data)
{
    ListenerClosure *closure = user_data;

    /* do nothing on state change to untoggled */
    if (!strcmp (state, "0"))
        return;

    g_print ("%s\n", path);

    gal_view_instance_set_current_view_id (closure->instance, closure->id);
}

static char *
build_menus(GalViewMenus *menus)
{
    BonoboUINode *root, *menu, *submenu, *place, *menuitem, *commands, *command;
    char *xml;
    int length;
    int i;
    GalViewInstance *instance = menus->priv->instance;
    GalViewCollection *collection = instance->collection;
    char *id;
    gboolean found = FALSE;

    root = bonobo_ui_node_new("Root");
    menu = bonobo_ui_node_new_child(root, "menu");
    commands = bonobo_ui_node_new_child (root, "commands");

    submenu = bonobo_ui_node_new_child(menu, "submenu");
    bonobo_ui_node_set_attr(submenu, "name", "View");

    place = bonobo_ui_node_new_child(submenu, "placeholder");
    bonobo_ui_node_set_attr(place, "name", "ViewBegin");
    
    submenu = bonobo_ui_node_new_child(place, "submenu");
    bonobo_ui_node_set_attr(submenu, "name", "CurrentView");
    bonobo_ui_node_set_attr(submenu, "_label", N_("_Current View"));

    id = gal_view_instance_get_current_view_id (instance);


    length = gal_view_collection_get_count(collection);

        menus->priv->listenerClosures = e_list_new (closure_copy, closure_free, menus);

    for (i = 0; i < length; i++) {
        GalViewCollectionItem *item = gal_view_collection_get_view_item(collection, i);
        ListenerClosure *closure;
        char *label;
        
        menuitem = bonobo_ui_node_new_child(submenu, "menuitem");
        bonobo_ui_node_set_attr(menuitem, "name", item->id);
        bonobo_ui_node_set_attr(menuitem, "id", item->id);
                bonobo_ui_node_set_attr(menuitem, "group", "GalViewMenus");
                bonobo_ui_node_set_attr(menuitem, "type", "radio");

        command = bonobo_ui_node_new_child (commands, "cmd");
        bonobo_ui_node_set_attr(command, "name", item->id);
                bonobo_ui_node_set_attr(command, "group", "GalViewMenus");

        label = bonobo_ui_util_encode_str (item->title);
        bonobo_ui_node_set_attr(menuitem, "label", label);
        g_free (label);

        closure            = g_new (ListenerClosure, 1);
        closure->instance  = instance;
        closure->id        = item->id;
        closure->ref_count = 1;

        if (!found && id && !strcmp (item->id, id)) {
            found = TRUE;
        }

        g_object_ref (closure->instance);

                bonobo_ui_component_add_listener (menus->priv->component, item->id, toggled_cb, closure);
                e_list_append (menus->priv->listenerClosures, closure);

        closure_free (closure, menus);
    }

    if (menus->priv->show_define_views) {
        if (!found) {

            menuitem = bonobo_ui_node_new_child(submenu, "separator");
            bonobo_ui_node_set_attr(menuitem, "name", "GalView:first_sep");
            bonobo_ui_node_set_attr(menuitem, "f", "");
        

            menuitem = bonobo_ui_node_new_child(submenu, "menuitem");
            bonobo_ui_node_set_attr(menuitem, "name", "custom_view");
            bonobo_ui_node_set_attr(menuitem, "id", "custom_view");
            bonobo_ui_node_set_attr(menuitem, "group", "GalViewMenus");
            bonobo_ui_node_set_attr(menuitem, "type", "radio");
            /* bonobo displays this string so it must be in locale */
            bonobo_ui_node_set_attr(menuitem, "_label", N_("Custom View"));

            command = bonobo_ui_node_new_child (commands, "cmd");
            bonobo_ui_node_set_attr(command, "name", "custom_view");
            bonobo_ui_node_set_attr(command, "group", "GalViewMenus");


            menuitem = bonobo_ui_node_new_child(submenu, "menuitem");
            bonobo_ui_node_set_attr(menuitem, "name", "SaveCurrentView");
            bonobo_ui_node_set_attr(menuitem, "_label", N_("Save Custom View..."));
            bonobo_ui_node_set_attr(menuitem, "verb", "");

            command = bonobo_ui_node_new_child(commands, "cmd");
            bonobo_ui_node_set_attr(command, "name", "SaveCurrentView");
        }

        menuitem = bonobo_ui_node_new_child(submenu, "separator");
        bonobo_ui_node_set_attr(menuitem, "name", "GalView:second_sep");
        bonobo_ui_node_set_attr(menuitem, "f", "");

        menuitem = bonobo_ui_node_new_child(submenu, "menuitem");
        bonobo_ui_node_set_attr(menuitem, "name", "DefineViews");
        bonobo_ui_node_set_attr(menuitem, "_label", N_("Define Views..."));
        bonobo_ui_node_set_attr(menuitem, "verb", "");

        command = bonobo_ui_node_new_child(commands, "cmd");
        bonobo_ui_node_set_attr(command, "name", "DefineViews");
    }

    xml = bonobo_ui_node_to_string(root, TRUE);

    bonobo_ui_node_free(root);

    g_free (id);

    /*  d(g_print (xml));*/

    return xml;
}

static BonoboUIVerb verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("DefineViews", define_views),
    BONOBO_UI_UNSAFE_VERB ("SaveCurrentView", save_current_view),
    BONOBO_UI_VERB_END
};

static void
set_state (GalViewMenus *gvm, char *path, CORBA_Environment *ev)
{
    char *full_path = g_strdup_printf ("/commands/%s", path);

    bonobo_ui_component_set_prop (gvm->priv->component, full_path, "state", "1", ev);
    g_free (full_path);
}

static void
set_radio (GalViewMenus *gvm,
       CORBA_Environment *ev)
{
    char *id;

    id = gal_view_instance_get_current_view_id (gvm->priv->instance);

    if (id) {
        set_state (gvm, id, ev);
    } else {
        set_state (gvm, "custom_view", ev);
    }
    g_free (id);
}

static void
build_stuff (GalViewMenus      *gvm,
         CORBA_Environment *ev)
{
    char *xml;

    g_object_ref (gvm);

    gal_view_menus_unmerge (gvm, ev);

    remove_listeners(gvm);
    remove_xml(gvm);
    xml = build_menus(gvm);
    bonobo_ui_component_set_translate(gvm->priv->component, "/", xml, ev);
    g_free(xml);

    bonobo_ui_component_add_verb_list_with_data(gvm->priv->component, verbs, gvm);

    set_radio (gvm, ev);

    g_object_unref (gvm);
}

void
gal_view_menus_set_show_define_views (GalViewMenus *gvm,
                      gboolean show_define_views)
{
    if (gvm->priv->show_define_views == show_define_views)
        return;

    gvm->priv->show_define_views = show_define_views;

    if (gvm->priv->component) {
        CORBA_Environment ev;

        CORBA_exception_init (&ev);
        build_stuff(gvm, &ev);
        CORBA_exception_free (&ev);
    }
}

void
gal_view_menus_apply     (GalViewMenus      *gvm,
              BonoboUIComponent *component,
              CORBA_Environment *opt_ev)
{
    if (gvm->priv == NULL)
        return;

    if (component != gvm->priv->component) {
        if (component)
            bonobo_object_ref (BONOBO_OBJECT (component));

        if (gvm->priv->component)
            bonobo_object_unref (BONOBO_OBJECT (gvm->priv->component));
    }

    gvm->priv->component = component;

    build_stuff (gvm, opt_ev);
}

void
gal_view_menus_unmerge   (GalViewMenus      *gvm,
              CORBA_Environment *opt_ev)
{
    d(g_print ("%s:\n", G_GNUC_FUNCTION));
    if (bonobo_ui_component_get_container (gvm->priv->component) != NULL
        && bonobo_ui_component_path_exists  (gvm->priv->component, CURRENT_VIEW_PATH, opt_ev)) {
        d(g_print ("%s: Removing path\n", G_GNUC_FUNCTION));
        bonobo_ui_component_rm (gvm->priv->component, CURRENT_VIEW_PATH, opt_ev);
    }
}

static void
collection_changed (GalViewCollection *collection,
            GalViewMenus *gvm)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    build_stuff(gvm, &ev);
    CORBA_exception_free (&ev);
}

static void
instance_changed (GalViewInstance *instance,
          GalViewMenus *gvm)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    build_stuff(gvm, &ev);
    CORBA_exception_free (&ev);
}

void
gal_view_menus_set_instance (GalViewMenus *gvm,
                 GalViewInstance *instance)
{
    remove_instance (gvm);
    add_instance (gvm, instance);
    instance_changed (instance, gvm);
}