path: root/lib/widgets/ephy-editable-toolbar.c

/*
 *  Copyright (C) 2000 Marco Pesenti Gritti
 *            (C) 2001, 2002 Jorn Baayen
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  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.
 */

#include "ephy-editable-toolbar.h"
#include "ephy-file-helpers.h"
#include "ephy-debug.h"
#include "ephy-dnd.h"
#include "eggtoolitem.h"
#include "eggtoolbar.h"

#include <libxml/parser.h>
#include <libgnome/gnome-i18n.h>
#include <string.h>

/* This is copied from gtkscrollbarwindow.c */
#define DEFAULT_SCROLLBAR_SPACING  3

#define SCROLLBAR_SPACING(w)                                                            \
  (GTK_SCROLLED_WINDOW_GET_CLASS (w)->scrollbar_spacing >= 0 ?                          \
   GTK_SCROLLED_WINDOW_GET_CLASS (w)->scrollbar_spacing : DEFAULT_SCROLLBAR_SPACING)

static GtkTargetEntry dest_drag_types [] =
{
        { "EPHY_TOOLBAR_BUTTON", 0, 0 },
    /* FIXME generic way to add types */
        { EPHY_DND_URL_TYPE, 0, EPHY_DND_URL }
};

static GtkTargetEntry source_drag_types [] =
{
        { "EPHY_TOOLBAR_BUTTON", 0, 0 }
};

static void ephy_editable_toolbar_class_init (EphyEditableToolbarClass *klass);
static void ephy_editable_toolbar_init   (EphyEditableToolbar *t);
static void ephy_editable_toolbar_finalize   (GObject *object);
static void do_merge             (EphyEditableToolbar *t);
static void setup_editor             (EphyEditableToolbar *etoolbar);
static void update_editor_sheet      (EphyEditableToolbar *etoolbar);
static gboolean update_editor_position       (EphyEditableToolbar *etoolbar);

enum
{
    PROP_0,
    PROP_MENU_MERGE
};

static GObjectClass *parent_class = NULL;

struct EphyEditableToolbarPrivate
{
    EggMenuMerge *merge;
    GNode *available_actions;
    GNode *toolbars;
    char *filename;

    GtkWidget *editor;
    GtkWidget *main_box;
    GtkWidget *table;
    GtkWidget *label_zone;
    GtkWidget *action_zone;
    GtkWidget *scrolled_window;

    guint ui_id;

    gboolean toolbars_dirty;
    gboolean editor_pos_dirty;
    gboolean editor_sheet_dirty;
    gboolean edit_mode;
};

typedef struct
{
    GtkWidget *widget;
} ToolbarNode;

typedef struct
{
    gboolean separator;
    EggAction *action;
    GtkWidget *widget;
} ItemNode;

GType
ephy_editable_toolbar_get_type (void)
{
        static GType ephy_editable_toolbar_type = 0;

        if (ephy_editable_toolbar_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (EphyEditableToolbarClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) ephy_editable_toolbar_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (EphyEditableToolbar),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) ephy_editable_toolbar_init
                };

                ephy_editable_toolbar_type = g_type_register_static (G_TYPE_OBJECT,
                                             "EphyEditableToolbar",
                                             &our_info, 0);
        }

        return ephy_editable_toolbar_type;

}

static ToolbarNode *
toolbar_node_new (void)
{
    ToolbarNode *node;

    node = g_new0 (ToolbarNode, 1);
    node->widget = NULL;

    return node;
}

static ItemNode *
item_node_new (EggAction *action, gboolean separator)
{
    ItemNode *item;

    item = g_new0 (ItemNode, 1);
    item->action = action;
    item->separator = separator;
    item->widget = NULL;

    return item;
}

static void
free_node (GNode *node)
{
    g_free (node->data);
}

static EggAction *
find_action (EphyEditableToolbar *t, const char *name)
{
    GList *l = t->priv->merge->action_groups;
    EggAction *action = NULL;

    for (; l != NULL; l = l->next)
    {
        EggAction *tmp;

        tmp = egg_action_group_get_action
            (EGG_ACTION_GROUP (l->data), name);
        if (tmp) action = tmp;
    }

    return action;
}

static GNode *
find_node_from_action (EphyEditableToolbar *t, EggAction *action)
{
    GNode *n1, *n2;

    for (n1 = t->priv->toolbars->children; n1 != NULL; n1 = n1->next)
    {
        for (n2 = n1->children; n2 != NULL; n2 = n2->next)
        {
            ItemNode *item = (ItemNode *) (n2->data);

            if (!item->separator && item->action == action)
                return n2;
        }
    }

    return NULL;
}

static EggAction *
impl_get_action (EphyEditableToolbar *etoolbar,
         const char *type,
         const char *name)
{
    EggAction *action;

    if (type == NULL)
    {
        action = find_action (etoolbar, name);
    }
    else
    {
        action = NULL;
    }

    return action;
}

static void
add_action (EphyEditableToolbar *t,
        GNode *parent,
        GNode *sibling,
        const char *type,
        const char *name)
{
    EggAction *action = NULL;
    gboolean separator;
    ItemNode *item;
    GNode *node;

    LOG ("Add action, type %s, name %s", type, name)

    separator = (strcmp (name, "separator") == 0);
    if (!separator)
    {
        action = ephy_editable_toolbar_get_action (t, type, name);
        g_return_if_fail (action != NULL);
    }

    item = item_node_new (action, separator);
    node = g_node_new (item);

    g_node_insert_before (parent, sibling, node);
}

static void
parse_item_list (EphyEditableToolbar *t,
         xmlNodePtr child,
         GNode *parent)
{
    while (child)
    {
        if (xmlStrEqual (child->name, "toolitem"))
        {
            xmlChar *verb;

            verb = xmlGetProp (child, "verb");
            add_action (t, parent, NULL, NULL, verb);

            xmlFree (verb);
        }
        else if (xmlStrEqual (child->name, "separator"))
        {
            add_action (t, parent, NULL, NULL, "separator");
        }

        child = child->next;
    }
}

static GNode *
add_toolbar (EphyEditableToolbar *t)
{
    ToolbarNode *toolbar;
    GNode *node;

    toolbar = toolbar_node_new ();
    node = g_node_new (toolbar);
    g_node_append (t->priv->toolbars, node);

    return node;
}

static void
parse_toolbars (EphyEditableToolbar *t,
        xmlNodePtr child)
{
    while (child)
    {
        if (xmlStrEqual (child->name, "toolbar"))
        {
            GNode *node;

            node = add_toolbar (t);
            parse_item_list (t, child->children, node);
        }

        child = child->next;
    }
}

static void
load_defaults (EphyEditableToolbar *t)
{
    xmlDocPtr doc;
        xmlNodePtr child;
    xmlNodePtr root;
    const char *xml_filepath;

    LOG ("Load default toolbar info")

    xml_filepath = ephy_file ("epiphany-toolbar.xml");

    doc = xmlParseFile (xml_filepath);
    root = xmlDocGetRootElement (doc);

    child = root->children;
    while (child)
    {
        if (xmlStrEqual (child->name, "available"))
        {
            t->priv->available_actions = g_node_new (NULL);
            parse_item_list (t, child->children,
                     t->priv->available_actions);
        }
        else if (xmlStrEqual (child->name, "default") &&
             t->priv->toolbars == NULL)
        {
            t->priv->toolbars = g_node_new (NULL);
            parse_toolbars (t, child->children);
        }

        child = child->next;
    }
}

static void
load_toolbar (EphyEditableToolbar *t)
{
    xmlDocPtr doc;
    xmlNodePtr root;
    const char *xml_filepath = t->priv->filename;

    LOG ("Load custom toolbar")

    if (!g_file_test (xml_filepath, G_FILE_TEST_EXISTS)) return;

    doc = xmlParseFile (xml_filepath);
    root = xmlDocGetRootElement (doc);

    t->priv->toolbars = g_node_new (NULL);
    parse_toolbars (t, root->children);
}

static xmlDocPtr
toolbar_list_to_xml (EphyEditableToolbar *t, GNode *tl)
{
    GNode *l1, *l2;
    xmlDocPtr doc;

    xmlIndentTreeOutput = TRUE;
    doc = xmlNewDoc ("1.0");
    doc->children = xmlNewDocNode (doc, NULL, "toolbars", NULL);

    for (l1 = tl->children; l1 != NULL; l1 = l1->next)
    {
        xmlNodePtr tnode;

        tnode = xmlNewChild (doc->children, NULL, "toolbar", NULL);

        for (l2 = l1->children; l2 != NULL; l2 = l2->next)
        {
            xmlNodePtr node;
            ItemNode *item = (ItemNode *) (l2->data);

            if (item->separator)
            {
                 node = xmlNewChild (tnode, NULL, "separator", NULL);
            }
            else
            {
                node = xmlNewChild (tnode, NULL, "toolitem", NULL);
                xmlSetProp (node, "verb", item->action->name);
            }
        }
    }

    return doc;
}

static char *
toolbar_list_to_string (EphyEditableToolbar *t, GNode *tl)
{
    GString *s;
    GNode *l1, *l2;
    char *result;
    int k = 0;

    s = g_string_new (NULL);
    g_string_append (s, "<Root>");
    for (l1 = tl->children; l1 != NULL; l1 = l1->next)
    {
        int i = 0;

        g_string_append_printf
            (s, "<dockitem name=\"Toolbar%d\">\n", k);

        for (l2 = l1->children; l2 != NULL; l2 = l2->next)
        {
            ItemNode *item = (ItemNode *) (l2->data);

            if (item->separator)
            {
                g_string_append_printf
                    (s, "<placeholder name=\"PlaceHolder%d\">"
                     "<separator name=\"ToolSeparator\"/>"
                     "</placeholder>\n", i);
            }
            else
            {
                g_string_append_printf
                    (s, "<placeholder name=\"PlaceHolder%d\">"
                     "<toolitem name=\"ToolItem\" verb=\"%s\"/>"
                     "</placeholder>\n",
                     i, item->action->name);
            }
            i++;
        }

        g_string_append (s, "</dockitem>\n");

        k++;
    }
    g_string_append (s, "</Root>");

    result = s->str;

    g_string_free (s, FALSE);

    return result;
}

static gboolean
ui_update (gpointer data)
{
    EphyEditableToolbar *etoolbar = EPHY_EDITABLE_TOOLBAR (data);

    if (etoolbar->priv->toolbars_dirty)
    {
        LOG ("Update ui: toolbars")
        do_merge (etoolbar);
        etoolbar->priv->toolbars_dirty = FALSE;
    }

    if (etoolbar->priv->editor_sheet_dirty)
    {
        LOG ("Update ui: editor sheet")
        update_editor_sheet (etoolbar);
        etoolbar->priv->editor_sheet_dirty = FALSE;
    }

    if (etoolbar->priv->editor_pos_dirty)
    {
        LOG ("Update ui: editor position (in idle)")
        g_idle_add ((GSourceFunc)update_editor_position, etoolbar);
        etoolbar->priv->editor_pos_dirty = FALSE;
    }

    return FALSE;
}

static void
queue_ui_update (EphyEditableToolbar *etoolbar)
{
    g_idle_add (ui_update, etoolbar);
}

static void
drag_data_received_cb (GtkWidget *widget,
               GdkDragContext *context,
               gint x,
               gint y,
               GtkSelectionData *selection_data,
               guint info,
               guint time_,
               EphyEditableToolbar *etoolbar)
{
    GNode *toolbar;
    GNode *parent;
    GNode *sibling;
    const char *type = NULL;
    GdkAtom target;

    toolbar = (GNode *)g_object_get_data (G_OBJECT (widget), "toolbar_node");

    if (!toolbar)
    {
        sibling = (GNode *)g_object_get_data (G_OBJECT (widget), "item_node");
        parent = sibling->parent;
    }
    else
    {
        sibling = NULL;
        parent = toolbar;
    }

    target = gtk_drag_dest_find_target (widget, context, NULL);
    if (target == gdk_atom_intern (EPHY_DND_URL_TYPE, FALSE))
    {
        type = EPHY_DND_URL_TYPE;
    }

    add_action (etoolbar, parent, sibling, type, selection_data->data);

    etoolbar->priv->toolbars_dirty = TRUE;
    queue_ui_update (etoolbar);
}

static void
drag_data_delete_cb (GtkWidget *widget,
                     GdkDragContext *context,
                     EphyEditableToolbar *etoolbar)
{
    GNode *node;

    node = (GNode *)g_object_get_data (G_OBJECT (widget), "item_node");
    free_node (node);
    g_node_destroy (node);

    etoolbar->priv->toolbars_dirty = TRUE;
    queue_ui_update (etoolbar);
}

static void
drag_data_get_cb (GtkWidget *widget,
                  GdkDragContext *context,
                  GtkSelectionData *selection_data,
                  guint info,
                  guint32 time,
                  EphyEditableToolbar *etoolbar)
{
    EggAction *action;
    const char *target;

    action = EGG_ACTION (g_object_get_data (G_OBJECT (widget), "egg-action"));
    target = action->name;

    LOG ("Drag data get %s", action->name);

    gtk_selection_data_set (selection_data,
                selection_data->target,
                8, target, strlen (target));
}

static void
connect_drag_sources (EphyEditableToolbar *etoolbar, GNode *toolbars)
{
    GNode *l1, *l2;

    for (l1 = toolbars->children; l1 != NULL; l1 = l1->next)
    {
        for (l2 = l1->children; l2 != NULL; l2 = l2->next)
        {
            ItemNode *node = (ItemNode *) (l2->data);
            GtkWidget *toolitem;

            toolitem = node->widget;

            if (!g_object_get_data (G_OBJECT (toolitem), "drag_source_set"))
            {
                g_object_set_data (G_OBJECT (toolitem), "drag_source_set",
                           GINT_TO_POINTER (TRUE));

                g_signal_connect (toolitem, "drag_data_get",
                          G_CALLBACK (drag_data_get_cb),
                          etoolbar);
                g_signal_connect (toolitem, "drag_data_delete",
                          G_CALLBACK (drag_data_delete_cb),
                          etoolbar);
            }
        }
    }
}

static void
disconnect_drag_sources (EphyEditableToolbar *etoolbar, GNode *toolbars)
{
    GNode *l1, *l2;

    for (l1 = toolbars->children; l1 != NULL; l1 = l1->next)
    {
        for (l2 = l1->children; l2 != NULL; l2 = l2->next)
        {
            ItemNode *node = (ItemNode *) (l2->data);
            GtkWidget *toolitem;

            toolitem = node->widget;

            if (g_object_get_data (G_OBJECT (toolitem), "drag_source_set"))
            {
                g_object_set_data (G_OBJECT (toolitem), "drag_source_set",
                           GINT_TO_POINTER (FALSE));

                g_signal_handlers_disconnect_by_func
                    (toolitem,
                     G_CALLBACK (drag_data_get_cb),
                     etoolbar);
                g_signal_handlers_disconnect_by_func
                    (toolitem,
                     G_CALLBACK (drag_data_delete_cb),
                     etoolbar);
            }
        }
    }
}

static void
setup_toolbars (EphyEditableToolbar *etoolbar, GNode *toolbars)
{
    GNode *l1, *l2;
    int k = 0;
    char path[255];

    for (l1 = toolbars->children; l1 != NULL; l1 = l1->next)
    {
        int i = 0;
        GtkWidget *toolbar;
        ToolbarNode *node = (ToolbarNode *)l1->data;

        sprintf (path, "/Toolbar%d", k);
        toolbar = egg_menu_merge_get_widget (etoolbar->priv->merge, path);
        g_object_set_data (G_OBJECT (toolbar), "toolbar_node", l1);
        node->widget = toolbar;

        if (!g_object_get_data (G_OBJECT (toolbar), "drag_dest_set"))
        {
            LOG ("Setup drag dest for toolbar %s", path)
            g_object_set_data (G_OBJECT (toolbar), "drag_dest_set",
                       GINT_TO_POINTER (TRUE));
            gtk_drag_dest_set (toolbar, GTK_DEST_DEFAULT_ALL,
                       dest_drag_types, 2,
                       GDK_ACTION_MOVE | GDK_ACTION_COPY);
            g_signal_connect (toolbar, "drag_data_received",
                      G_CALLBACK (drag_data_received_cb),
                      etoolbar);
        }

        for (l2 = l1->children; l2 != NULL; l2 = l2->next)
        {
            ItemNode *node = (ItemNode *) (l2->data);
            GtkWidget *toolitem;
            const char *type;

            if (node->separator)
            {
                type ="ToolSeparator";
            }
            else
            {
                type ="ToolItem";
            }

            sprintf (path, "/Toolbar%d/PlaceHolder%d/%s", k, i, type);

            toolitem = egg_menu_merge_get_widget (etoolbar->priv->merge, path);
            node->widget = toolitem;

            g_object_set_data (G_OBJECT (toolitem), "item_node", l2);

            LOG ("Setup drag dest for toolbar item %s %p", path, toolitem);

            if (!g_object_get_data (G_OBJECT (toolitem), "drag_dest_set"))
            {
                g_object_set_data (G_OBJECT (toolitem), "drag_dest_set",
                           GINT_TO_POINTER (TRUE));
                gtk_drag_dest_set (toolitem, GTK_DEST_DEFAULT_ALL,
                           dest_drag_types, 2,
                           GDK_ACTION_COPY | GDK_ACTION_MOVE);
                g_signal_connect (toolitem, "drag_data_received",
                          G_CALLBACK (drag_data_received_cb),
                          etoolbar);
            }

            i++;
        }

        k++;
    }
}

static void
ensure_toolbars_min_size (EphyEditableToolbar *t)
{
    GNode *n;
    int i = 0;

    for (n = t->priv->toolbars->children; n != NULL; n = n->next)
    {
        ToolbarNode *node = (ToolbarNode *) (n->data);
        GtkWidget *toolbar;

        toolbar = node->widget;

        if (g_node_n_children (n) == 0)
        {
            gtk_widget_set_size_request (toolbar, -1, 20);
        }
        else
        {
            gtk_widget_set_size_request (toolbar, -1, -1);
        }

        i++;
    }
}

static void
ephy_editable_toolbar_save (EphyEditableToolbar *t)
{
    xmlDocPtr doc;

    doc = toolbar_list_to_xml (t, t->priv->toolbars);
    xmlSaveFormatFile (t->priv->filename, doc, 1);
    xmlFreeDoc (doc);
}


static void
do_merge (EphyEditableToolbar *t)
{
    char *str;
    guint ui_id;

    str = toolbar_list_to_string (t, t->priv->toolbars);

    LOG ("Merge UI\n%s", str)

    ui_id = egg_menu_merge_add_ui_from_string
        (t->priv->merge, str, -1, NULL);

    if (t->priv->ui_id != 0)
    {
        LOG ("Remove old toolbar")

        egg_menu_merge_remove_ui (t->priv->merge,
                      t->priv->ui_id);
    }

    t->priv->ui_id = ui_id;

    egg_menu_merge_ensure_update (t->priv->merge);

    setup_toolbars (t, t->priv->toolbars);

    if (t->priv->edit_mode)
    {
        connect_drag_sources (t, t->priv->toolbars);
    }

    ensure_toolbars_min_size (t);

    ephy_editable_toolbar_save (t);

    g_free (str);
}

static void
ephy_editable_toolbar_set_merge (EphyEditableToolbar *t, EggMenuMerge *merge)
{
    t->priv->merge = merge;

    LOG ("Got MenuMerge")

    load_toolbar (t);
    load_defaults (t);
    do_merge (t);
}

static void
ephy_editable_toolbar_set_property (GObject *object,
                    guint prop_id,
                    const GValue *value,
                    GParamSpec *pspec)
{
        EphyEditableToolbar *t = EPHY_EDITABLE_TOOLBAR (object);

        switch (prop_id)
        {
        case PROP_MENU_MERGE:
        ephy_editable_toolbar_set_merge (t, g_value_get_object (value));
        break;
        }
}

static void
ephy_editable_toolbar_get_property (GObject *object,
                                    guint prop_id,
                                    GValue *value,
                                    GParamSpec *pspec)
{
        EphyEditableToolbar *t = EPHY_EDITABLE_TOOLBAR (object);

        switch (prop_id)
        {
                case PROP_MENU_MERGE:
                        g_value_set_object (value, t->priv->merge);
                        break;
        }
}

static void
ephy_editable_toolbar_class_init (EphyEditableToolbarClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = ephy_editable_toolbar_finalize;
    object_class->set_property = ephy_editable_toolbar_set_property;
    object_class->get_property = ephy_editable_toolbar_get_property;

    klass->get_action = impl_get_action;

    g_object_class_install_property (object_class,
                                         PROP_MENU_MERGE,
                                         g_param_spec_object ("MenuMerge",
                                                              "MenuMerge",
                                                              "Menu merge",
                                                              EGG_TYPE_MENU_MERGE,
                                                              G_PARAM_READWRITE));
}

static void
ephy_editable_toolbar_init (EphyEditableToolbar *t)
{
        t->priv = g_new0 (EphyEditableToolbarPrivate, 1);

    t->priv->merge = NULL;
    t->priv->available_actions = NULL;
    t->priv->toolbars = NULL;
    t->priv->filename = g_build_filename (ephy_dot_dir (), "toolbar.xml", NULL);
    t->priv->editor = NULL;
    t->priv->ui_id = 0;
    t->priv->toolbars_dirty = FALSE;
    t->priv->editor_pos_dirty = FALSE;
    t->priv->editor_sheet_dirty = FALSE;
    t->priv->edit_mode = FALSE;
}

static void
ephy_editable_toolbar_finalize (GObject *object)
{
    EphyEditableToolbar *t = EPHY_EDITABLE_TOOLBAR (object);

        g_return_if_fail (object != NULL);
        g_return_if_fail (IS_EPHY_EDITABLE_TOOLBAR (object));

    if (t->priv->editor)
    {
        gtk_widget_destroy (t->priv->editor);
    }

    g_node_children_foreach (t->priv->available_actions, G_IN_ORDER,
                 (GNodeForeachFunc)free_node, NULL);
    g_node_children_foreach (t->priv->toolbars, G_IN_ORDER,
                 (GNodeForeachFunc)free_node, NULL);
    g_node_destroy (t->priv->available_actions);
    g_node_destroy (t->priv->toolbars);

    g_free (t->priv->filename);

        g_free (t->priv);

    LOG ("EphyEditableToolbar finalized")

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

EphyEditableToolbar *
ephy_editable_toolbar_new (EggMenuMerge *merge)
{
    EphyEditableToolbar *t;

    t = EPHY_EDITABLE_TOOLBAR (g_object_new (EPHY_EDITABLE_TOOLBAR_TYPE,
                   "MenuMerge", merge,
                   NULL));

    g_return_val_if_fail (t->priv != NULL, NULL);

    return t;
}

static void
editor_get_dimensions (EphyEditableToolbar *etoolbar, GtkWidget *toolbar,
               int *x, int *y, int *width, int *height)
{
    GtkWidget *vbox;
    GtkBin *popwin;
    GtkWidget *widget;
    GtkWidget *table;
    GtkWidget *label_zone;
    GtkWidget *action_zone;
    GtkWidget *popup;
    GtkRequisition requisition;
    int avail_height;
    int avail_width;
    int work_height;
    int work_width;

    widget = toolbar;
    popup  = etoolbar->priv->scrolled_window;
    popwin = GTK_BIN (etoolbar->priv->editor);
    vbox = etoolbar->priv->main_box;
    table = etoolbar->priv->table;
    action_zone = etoolbar->priv->action_zone;
    label_zone = etoolbar->priv->label_zone;

    gdk_window_get_origin (toolbar->window, x, y);

    *y += toolbar->allocation.y + toolbar->allocation.height;

    avail_height = gdk_screen_height () - *y;
    avail_width = gdk_screen_width () - *x;

    gtk_widget_size_request (table, &requisition);

    *width = MIN (avail_width, requisition.width);
    *height = MIN (avail_height, requisition.height);

    work_width = (2 * GTK_BIN (popwin)->child->style->xthickness +
              2 * GTK_CONTAINER (popwin)->border_width +
              2 * GTK_CONTAINER (popwin->child)->border_width +
              2 * GTK_CONTAINER (vbox)->border_width +
              2 * GTK_CONTAINER (popup)->border_width +
              2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
              2 * GTK_BIN (popup)->child->style->xthickness);
    *width += work_width;

    work_height = (2 * GTK_BIN (popwin)->child->style->ythickness +
               2 * GTK_CONTAINER (popwin)->border_width +
               2 * GTK_CONTAINER (popwin->child)->border_width +
               2 * GTK_CONTAINER (vbox)->border_width +
               2 * GTK_CONTAINER (popup)->border_width +
               2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
               2 * GTK_BIN (popup)->child->style->ythickness);
    *height += work_height;

    gtk_widget_size_request (label_zone, &requisition);
    *height += requisition.height;
    gtk_widget_size_request (action_zone, &requisition);
    *height += requisition.height;
    /* Vbox spacing */
    *height += 2 * 12;

    *x += (toolbar->allocation.x + toolbar->allocation.width)/2 - (*width / 2);
}

static GList *
build_to_drag_actions_list (EphyEditableToolbar *etoolbar)
{
    GNode *l;
    GList *result = NULL;

    for (l = etoolbar->priv->available_actions->children; l != NULL; l = l->next)
    {
        ItemNode *item;

        item = (ItemNode *) (l->data);

        if (!find_node_from_action (etoolbar, item->action))
        {
            result = g_list_append (result, item);
        }
    }

    return result;
}

static void
hide_editor (EphyEditableToolbar *etoolbar)
{
    gtk_grab_remove (GTK_WIDGET (etoolbar->priv->editor));
    gtk_widget_hide (GTK_WIDGET (etoolbar->priv->editor));
}

static void
editor_close_cb (GtkWidget *button, EphyEditableToolbar *etoolbar)
{
    etoolbar->priv->edit_mode = FALSE;
    disconnect_drag_sources (etoolbar, etoolbar->priv->toolbars);
    hide_editor (etoolbar);
}

static void
editor_add_toolbar_cb (GtkWidget *button, EphyEditableToolbar *etoolbar)
{
    add_toolbar (etoolbar);

    etoolbar->priv->toolbars_dirty = TRUE;
    etoolbar->priv->editor_pos_dirty = TRUE;
    queue_ui_update (etoolbar);
}

static void
editor_drag_data_received_cb (GtkWidget *widget,
                      GdkDragContext *context,
                      gint x,
                      gint y,
                      GtkSelectionData *selection_data,
                      guint info,
                      guint time_,
                      EphyEditableToolbar *etoolbar)
{
    etoolbar->priv->editor_sheet_dirty = TRUE;
    etoolbar->priv->editor_pos_dirty = TRUE;
    queue_ui_update (etoolbar);
}

static void
editor_drag_data_delete_cb (GtkWidget *widget,
                            GdkDragContext *context,
                            EphyEditableToolbar *etoolbar)
{
    etoolbar->priv->editor_sheet_dirty = TRUE;
    etoolbar->priv->editor_pos_dirty = TRUE;
    queue_ui_update (etoolbar);
}

static void
setup_editor (EphyEditableToolbar *etoolbar)
{
    GtkWidget *editor;
    GtkWidget *scrolled_window;
    GtkWidget *vbox;
    GtkWidget *label_hbox;
    GtkWidget *image;
    GtkWidget *label;
    GtkWidget *bbox;
    GtkWidget *button;
    GtkWidget *frame;

    editor = gtk_window_new (GTK_WINDOW_POPUP);
    etoolbar->priv->editor = editor;
    frame = gtk_frame_new (NULL);
    gtk_widget_show (frame);
    gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
    gtk_container_add (GTK_CONTAINER (editor), frame);
    vbox = gtk_vbox_new (FALSE, 12);
    etoolbar->priv->main_box = vbox;
    gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
    gtk_widget_show (vbox);
    gtk_container_add (GTK_CONTAINER (frame), vbox);
    scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    etoolbar->priv->scrolled_window = scrolled_window;
    gtk_widget_show (scrolled_window);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                    GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_box_pack_start (GTK_BOX (vbox), scrolled_window, TRUE, TRUE, 0);
    label_hbox = gtk_hbox_new (FALSE, 6);
    etoolbar->priv->label_zone = label_hbox;
    gtk_widget_show (label_hbox);
    gtk_box_pack_start (GTK_BOX (vbox), label_hbox, FALSE, FALSE, 0);
    image = gtk_image_new_from_stock (GTK_STOCK_DIALOG_INFO, GTK_ICON_SIZE_DIALOG);
    gtk_widget_show (image);
    gtk_box_pack_start (GTK_BOX (label_hbox), image, FALSE, FALSE, 0);
    label = gtk_label_new (_("Drag an item onto the toolbars above to add it, "
                 "from the toolbars in the items table to remove it."));
    gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
    gtk_widget_show (label);
    gtk_box_pack_start (GTK_BOX (label_hbox), label, FALSE, TRUE, 0);
    bbox = gtk_hbutton_box_new ();
    gtk_box_set_spacing (GTK_BOX (bbox), 10);
    etoolbar->priv->action_zone = bbox;
    gtk_widget_show (bbox);
    gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox),
                       GTK_BUTTONBOX_END);
    gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
    button = gtk_button_new_from_stock (GTK_STOCK_ADD);
    gtk_widget_show (button);
    gtk_button_set_label (GTK_BUTTON (button), _("Add Toolbar"));
    g_signal_connect (button, "clicked",
              G_CALLBACK (editor_add_toolbar_cb),
              etoolbar);
    gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);
    button = gtk_button_new_from_stock (GTK_STOCK_CLOSE);
    gtk_widget_show (button);
    g_signal_connect (button, "clicked",
              G_CALLBACK (editor_close_cb),
              etoolbar);
    gtk_box_pack_start (GTK_BOX (bbox), button, FALSE, FALSE, 0);

    update_editor_sheet (etoolbar);
    update_editor_position (etoolbar);
}

static void
update_editor_sheet (EphyEditableToolbar *etoolbar)
{
    GList *l;
    GList *to_drag;
    int x, y, height, width;
    GtkWidget *table;
    GtkWidget *viewport;

    viewport = GTK_BIN (etoolbar->priv->scrolled_window)->child;
    if (viewport)
    {
        table = GTK_BIN (viewport)->child;
        gtk_container_remove (GTK_CONTAINER (viewport), table);
    }
    table = gtk_table_new (0, 0, TRUE);
    etoolbar->priv->table = table;
    gtk_container_set_border_width (GTK_CONTAINER (table), 12);
    gtk_table_set_col_spacings (GTK_TABLE (table), 12);
    gtk_table_set_row_spacings (GTK_TABLE (table), 12);
    gtk_widget_show (table);
    gtk_scrolled_window_add_with_viewport
        (GTK_SCROLLED_WINDOW (etoolbar->priv->scrolled_window), table);
    gtk_drag_dest_set (table, GTK_DEST_DEFAULT_ALL,
               dest_drag_types, 2, GDK_ACTION_MOVE);
    g_signal_connect (table, "drag_data_received",
              G_CALLBACK (editor_drag_data_received_cb),
              etoolbar);

    to_drag = build_to_drag_actions_list (etoolbar);

    x = y = 0;
    width = 4;
    height = (g_list_length (to_drag) - 1) / width + 1;
    gtk_table_resize (GTK_TABLE (etoolbar->priv->table), height, width);

    for (l = to_drag; l != NULL; l = l->next)
    {
        GtkWidget *event_box;
        GtkWidget *vbox;
        GtkWidget *icon;
        GtkWidget *label;
        ItemNode *node = (ItemNode *) (l->data);
        EggAction *action = EGG_ACTION (node->action);

        event_box = gtk_event_box_new ();
        gtk_widget_show (event_box);
        gtk_drag_source_set (event_box,
                     GDK_BUTTON1_MASK,
                     source_drag_types, 1,
                     GDK_ACTION_MOVE);
        g_signal_connect (event_box, "drag_data_get",
                  G_CALLBACK (drag_data_get_cb),
                  etoolbar);
        g_signal_connect (event_box, "drag_data_delete",
                  G_CALLBACK (editor_drag_data_delete_cb),
                  etoolbar);

        g_object_set_data (G_OBJECT (event_box), "egg-action", action);

        vbox = gtk_vbox_new (0, FALSE);
        gtk_widget_show (vbox);
        gtk_container_add (GTK_CONTAINER (event_box), vbox);

        icon = gtk_image_new_from_stock
            (action->stock_id ? action->stock_id : GTK_STOCK_DND,
             GTK_ICON_SIZE_LARGE_TOOLBAR);
        gtk_widget_show (icon);
        gtk_box_pack_start (GTK_BOX (vbox), icon, FALSE, TRUE, 0);

        label = gtk_label_new_with_mnemonic (action->label);
        gtk_widget_show (label);
        gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, TRUE, 0);

        gtk_table_attach_defaults (GTK_TABLE (etoolbar->priv->table),
                       event_box, x, x + 1, y, y + 1);

        x ++;
        if (x >= width)
        {
            x = 0;
            y++;
        }
    }

    g_list_free (to_drag);
}

static gboolean
update_editor_position (EphyEditableToolbar *etoolbar)
{
    ToolbarNode *last_node;
    GtkWidget *last_toolbar;
    GtkWidget *editor;
    int x, y, height, width;

    last_node = (ToolbarNode *)(g_node_last_child (etoolbar->priv->toolbars))->data;
    last_toolbar = last_node->widget;
    g_assert (EGG_IS_TOOLBAR (last_toolbar));

    editor_get_dimensions (etoolbar, last_toolbar,
                   &x, &y, &width, &height);
    editor = etoolbar->priv->editor;
    gtk_widget_set_size_request (GTK_WIDGET (editor), width, height);
    gtk_window_move (GTK_WINDOW (editor), x, y);

    LOG ("Editor moved to %d %d %d %d", x, y, width, height)

    return FALSE;
}

static gboolean
button_press_cb (GtkWidget *w,
         GdkEvent *event,
         EphyEditableToolbar *etoolbar)
{
    GtkWidget *widget;
    GtkWidget *toolitem;

    widget = gtk_get_event_widget (event);
    toolitem = gtk_widget_get_ancestor (widget, EGG_TYPE_TOOL_ITEM);

    if (toolitem == NULL) return FALSE;

    switch (event->type)
    {
        case GDK_BUTTON_PRESS:
            gtk_drag_begin (toolitem,
                    gtk_target_list_new (source_drag_types, 1),
                    GDK_ACTION_MOVE, 1, event);
            return TRUE;
        default:
            break;
    }

    return FALSE;
}

static void
show_editor (EphyEditableToolbar *etoolbar)
{
    GtkWidget *editor = etoolbar->priv->editor;

    g_return_if_fail (editor != NULL);

    gtk_widget_show (GTK_WIDGET (editor));
    gtk_grab_add (editor);

    g_signal_connect (editor, "button_press_event",
              G_CALLBACK (button_press_cb),
              etoolbar);
}

static void
set_all_actions_sensitive (EphyEditableToolbar *etoolbar)
{
    GNode *l;

    for (l = etoolbar->priv->available_actions->children; l != NULL; l = l->next)
    {
        ItemNode *node = (ItemNode *) (l->data);

        g_object_set (node->action, "sensitive", TRUE, NULL);
    }
}

void
ephy_editable_toolbar_edit (EphyEditableToolbar *etoolbar)
{
    etoolbar->priv->edit_mode = TRUE;

    connect_drag_sources (etoolbar, etoolbar->priv->toolbars);
    set_all_actions_sensitive (etoolbar);
    setup_editor (etoolbar);
    show_editor (etoolbar);
}

EggAction *
ephy_editable_toolbar_get_action (EphyEditableToolbar *etoolbar,
                  const char *type,
                  const char *name)
{
     EphyEditableToolbarClass *klass = EPHY_EDITABLE_TOOLBAR_GET_CLASS (etoolbar);
     return klass->get_action (etoolbar, type, name);
}