Sylpheed

/*

 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client

 * Copyright (C) 1999-2005 Hiroyuki Yamamoto

 *

 * 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 of the License, 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.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#include <glib.h>

#include <glib/gi18n.h>

#include <gdk/gdkkeysyms.h>

#include <gdk/gdk.h>

#include <gtk/gtkwidget.h>

#include <gtk/gtkhbbox.h>

#include <gtk/gtkbutton.h>

#include <gtk/gtkctree.h>

#include <gtk/gtkcombo.h>

#include <gtk/gtkbindings.h>

#include <gtk/gtkitemfactory.h>

#include <stdlib.h>

#include <stdarg.h>

#if (HAVE_WCTYPE_H && HAVE_WCHAR_H)

#  include <wchar.h>

#  include <wctype.h>

#endif

#include "gtkutils.h"

#include "utils.h"

#include "gtksctree.h"

#include "codeconv.h"

#include "menu.h"

#warning FIXME_GTK2

gboolean gtkut_get_font_size(GtkWidget *widget, gint *width, gint *height)

{

        PangoLayout *layout;

        const gchar *str = "Abcdef";

        g_return_val_if_fail(GTK_IS_WIDGET(widget), FALSE);

        layout = gtk_widget_create_pango_layout(widget, str);

        g_return_val_if_fail(layout, FALSE);

        pango_layout_get_pixel_size(layout, width, height);

        if (width)

                *width = *width / g_utf8_strlen(str, -1);

        g_object_unref(layout);

        return TRUE;

}

PangoFontDescription *gtkut_get_default_font_desc(void)

{

        static PangoFontDescription *font_desc = NULL;

        if (!font_desc) {

                GtkWidget *window;

                window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

                gtk_widget_ensure_style(window);

                font_desc = pango_font_description_copy

                        (window->style->font_desc);

                gtk_object_sink(GTK_OBJECT(window));

        }

        return pango_font_description_copy(font_desc);

}

void gtkut_widget_set_small_font_size(GtkWidget *widget)

{

        PangoFontDescription *font_desc;

        gint size;

        g_return_if_fail(widget != NULL);

        g_return_if_fail(widget->style != NULL);

        font_desc = gtkut_get_default_font_desc();

        size = pango_font_description_get_size(font_desc);

        pango_font_description_set_size(font_desc, size * PANGO_SCALE_SMALL);

        gtk_widget_modify_font(widget, font_desc);

        pango_font_description_free(font_desc);

}

void gtkut_convert_int_to_gdk_color(gint rgbvalue, GdkColor *color)

{

        g_return_if_fail(color != NULL);

        color->pixel = 0L;

        color->red   = (int) (((gdouble)((rgbvalue & 0xff0000) >> 16) / 255.0) * 65535.0);

        color->green = (int) (((gdouble)((rgbvalue & 0x00ff00) >>  8) / 255.0) * 65535.0);

        color->blue  = (int) (((gdouble) (rgbvalue & 0x0000ff)        / 255.0) * 65535.0);

}

void gtkut_stock_button_set_create(GtkWidget **bbox,

                                   GtkWidget **button1, const gchar *label1,

                                   GtkWidget **button2, const gchar *label2,

                                   GtkWidget **button3, const gchar *label3)

{

        g_return_if_fail(bbox != NULL);

        g_return_if_fail(button1 != NULL);

        *bbox = gtk_hbutton_box_new();

        gtk_button_box_set_layout(GTK_BUTTON_BOX(*bbox), GTK_BUTTONBOX_END);

        gtk_box_set_spacing(GTK_BOX(*bbox), 5);

        *button1 = gtk_button_new_from_stock(label1);

        GTK_WIDGET_SET_FLAGS(*button1, GTK_CAN_DEFAULT);

        gtk_box_pack_start(GTK_BOX(*bbox), *button1, TRUE, TRUE, 0);

        gtk_widget_show(*button1);

        if (button2) {

                *button2 = gtk_button_new_from_stock(label2);

                GTK_WIDGET_SET_FLAGS(*button2, GTK_CAN_DEFAULT);

                gtk_box_pack_start(GTK_BOX(*bbox), *button2, TRUE, TRUE, 0);

                gtk_widget_show(*button2);

        }

        if (button3) {

                *button3 = gtk_button_new_from_stock(label3);

                GTK_WIDGET_SET_FLAGS(*button3, GTK_CAN_DEFAULT);

                gtk_box_pack_start(GTK_BOX(*bbox), *button3, TRUE, TRUE, 0);

                gtk_widget_show(*button3);

        }

}

static void combo_button_size_request(GtkWidget *widget,

                                      GtkRequisition *requisition,

                                      gpointer data)

{

        ComboButton *combo = (ComboButton *)data;

        if (combo->arrow->allocation.height != requisition->height)

                gtk_widget_set_size_request(combo->arrow,

                                            -1, requisition->height);

}

static void combo_button_enter(GtkWidget *widget, gpointer data)

{

        ComboButton *combo = (ComboButton *)data;

        if (GTK_WIDGET_STATE(combo->arrow) != GTK_STATE_PRELIGHT) {

                gtk_widget_set_state(combo->arrow, GTK_STATE_PRELIGHT);

                gtk_widget_queue_draw(combo->arrow);

        }

        if (GTK_WIDGET_STATE(combo->button) != GTK_STATE_PRELIGHT) {

                gtk_widget_set_state(combo->button, GTK_STATE_PRELIGHT);

                gtk_widget_queue_draw(combo->button);

        }

}

static void combo_button_leave(GtkWidget *widget, gpointer data)

{

        ComboButton *combo = (ComboButton *)data;

        if (GTK_WIDGET_STATE(combo->arrow) != GTK_STATE_NORMAL) {

                gtk_widget_set_state(combo->arrow, GTK_STATE_NORMAL);

                gtk_widget_queue_draw(combo->arrow);

        }

        if (GTK_WIDGET_STATE(combo->button) != GTK_STATE_NORMAL) {

                gtk_widget_set_state(combo->button, GTK_STATE_NORMAL);

                gtk_widget_queue_draw(combo->button);

        }

}

static gint combo_button_arrow_pressed(GtkWidget *widget, GdkEventButton *event,

                                       gpointer data)

{

        ComboButton *combo = (ComboButton *)data;

        if (!event) return FALSE;

        gtk_menu_popup(GTK_MENU(combo->menu), NULL, NULL,

                       menu_button_position, combo->button,

                       event->button, event->time);

        return TRUE;

}

static void combo_button_destroy(GtkWidget *widget, gpointer data)

{

        ComboButton *combo = (ComboButton *)data;

        gtk_object_destroy(GTK_OBJECT(combo->factory));

        g_free(combo);

}

ComboButton *gtkut_combo_button_create(GtkWidget *button,

                                       GtkItemFactoryEntry *entries,

                                       gint n_entries, const gchar *path,

                                       gpointer data)

{

        ComboButton *combo;

        GtkWidget *arrow;

        combo = g_new0(ComboButton, 1);

        combo->arrow = gtk_button_new();

        arrow = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);

        gtk_widget_set_size_request(arrow, 7, -1);

        gtk_container_add(GTK_CONTAINER(combo->arrow), arrow);

        GTK_WIDGET_UNSET_FLAGS(combo->arrow, GTK_CAN_FOCUS);

        gtk_widget_show_all(combo->arrow);

        combo->button = button;

        combo->menu = menu_create_items(entries, n_entries, path,

                                        &combo->factory, data);

        combo->data = data;

        g_signal_connect(G_OBJECT(combo->button), "size_request",

                         G_CALLBACK(combo_button_size_request), combo);

        g_signal_connect(G_OBJECT(combo->button), "enter",

                         G_CALLBACK(combo_button_enter), combo);

        g_signal_connect(G_OBJECT(combo->button), "leave",

                         G_CALLBACK(combo_button_leave), combo);

        g_signal_connect(G_OBJECT(combo->arrow), "enter",

                         G_CALLBACK(combo_button_enter), combo);

        g_signal_connect(G_OBJECT(combo->arrow), "leave",

                         G_CALLBACK(combo_button_leave), combo);

        g_signal_connect(G_OBJECT(combo->arrow), "button_press_event",

                         G_CALLBACK(combo_button_arrow_pressed), combo);

        g_signal_connect(G_OBJECT(combo->arrow), "destroy",

                         G_CALLBACK(combo_button_destroy), combo);

        return combo;

}

#define CELL_SPACING 1

#define ROW_TOP_YPIXEL(clist, row) (((clist)->row_height * (row)) + \

                                    (((row) + 1) * CELL_SPACING) + \

                                    (clist)->voffset)

#define ROW_FROM_YPIXEL(clist, y) (((y) - (clist)->voffset) / \

                                   ((clist)->row_height + CELL_SPACING))

void gtkut_ctree_node_move_if_on_the_edge(GtkCTree *ctree, GtkCTreeNode *node)

{

        GtkCList *clist = GTK_CLIST(ctree);

        gint row;

        GtkVisibility row_visibility, prev_row_visibility, next_row_visibility;

        g_return_if_fail(ctree != NULL);

        g_return_if_fail(node != NULL);

        row = g_list_position(clist->row_list, (GList *)node);

        if (row < 0 || row >= clist->rows || clist->row_height == 0) return;

        row_visibility = gtk_clist_row_is_visible(clist, row);

        prev_row_visibility = gtk_clist_row_is_visible(clist, row - 1);

        next_row_visibility = gtk_clist_row_is_visible(clist, row + 1);

        if (row_visibility == GTK_VISIBILITY_NONE) {

                gtk_clist_moveto(clist, row, -1, 0.5, 0);

                return;

        }

        if (row_visibility == GTK_VISIBILITY_FULL &&

            prev_row_visibility == GTK_VISIBILITY_FULL &&

            next_row_visibility == GTK_VISIBILITY_FULL)

                return;

        if (prev_row_visibility != GTK_VISIBILITY_FULL &&

            next_row_visibility != GTK_VISIBILITY_FULL)

                return;

        if (prev_row_visibility != GTK_VISIBILITY_FULL) {

                gtk_clist_moveto(clist, row, -1, 0.2, 0);

                return;

        }

        if (next_row_visibility != GTK_VISIBILITY_FULL) {

                gtk_clist_moveto(clist, row, -1, 0.8, 0);

                return;

        }

}

#undef CELL_SPACING

#undef ROW_TOP_YPIXEL

#undef ROW_FROM_YPIXEL

gint gtkut_ctree_get_nth_from_node(GtkCTree *ctree, GtkCTreeNode *node)

{

        g_return_val_if_fail(ctree != NULL, -1);

        g_return_val_if_fail(node != NULL, -1);

        return g_list_position(GTK_CLIST(ctree)->row_list, (GList *)node);

}

/* get the next node, including the invisible one */

GtkCTreeNode *gtkut_ctree_node_next(GtkCTree *ctree, GtkCTreeNode *node)

{

        GtkCTreeNode *parent;

        if (!node) return NULL;

        if (GTK_CTREE_ROW(node)->children)

                return GTK_CTREE_ROW(node)->children;

        if (GTK_CTREE_ROW(node)->sibling)

                return GTK_CTREE_ROW(node)->sibling;

        for (parent = GTK_CTREE_ROW(node)->parent; parent != NULL;

             parent = GTK_CTREE_ROW(parent)->parent) {

                if (GTK_CTREE_ROW(parent)->sibling)

                        return GTK_CTREE_ROW(parent)->sibling;

        }

        return NULL;

}

/* get the previous node, including the invisible one */

GtkCTreeNode *gtkut_ctree_node_prev(GtkCTree *ctree, GtkCTreeNode *node)

{

        GtkCTreeNode *prev;

        GtkCTreeNode *child;

        if (!node) return NULL;

        prev = GTK_CTREE_NODE_PREV(node);

        if (prev == GTK_CTREE_ROW(node)->parent)

                return prev;

        child = prev;

        while (GTK_CTREE_ROW(child)->children != NULL) {

                child = GTK_CTREE_ROW(child)->children;

                while (GTK_CTREE_ROW(child)->sibling != NULL)

                        child = GTK_CTREE_ROW(child)->sibling;

        }

        return child;

}

gboolean gtkut_ctree_node_is_selected(GtkCTree *ctree, GtkCTreeNode *node)

{

        GtkCList *clist = GTK_CLIST(ctree);

        GList *cur;

        for (cur = clist->selection; cur != NULL; cur = cur->next) {

                if (node == GTK_CTREE_NODE(cur->data))

                        return TRUE;

        }

        return FALSE;

}

GtkCTreeNode *gtkut_ctree_find_collapsed_parent(GtkCTree *ctree,

                                                GtkCTreeNode *node)

{

        if (!node) return NULL;

        while ((node = GTK_CTREE_ROW(node)->parent) != NULL) {

                if (!GTK_CTREE_ROW(node)->expanded)

                        return node;

        }

        return NULL;

}

void gtkut_ctree_expand_parent_all(GtkCTree *ctree, GtkCTreeNode *node)

{

        while ((node = gtkut_ctree_find_collapsed_parent(ctree, node)) != NULL)

                gtk_ctree_expand(ctree, node);

}

void gtkut_ctree_set_focus_row(GtkCTree *ctree, GtkCTreeNode *node)

{

        gtkut_clist_set_focus_row(GTK_CLIST(ctree),

                                  gtkut_ctree_get_nth_from_node(ctree, node));

}

void gtkut_clist_set_focus_row(GtkCList *clist, gint row)

{

        clist->focus_row = row;

        GTKUT_CTREE_REFRESH(clist);

}

gboolean gtkut_tree_model_next(GtkTreeModel *model, GtkTreeIter *iter)

{

        GtkTreeIter iter_, parent;

        gboolean valid;

        if (gtk_tree_model_iter_children(model, &iter_, iter)) {

                *iter = iter_;

                return TRUE;

        }

        iter_ = *iter;

        if (gtk_tree_model_iter_next(model, &iter_)) {

                *iter = iter_;

                return TRUE;

        }

        iter_ = *iter;

        valid = gtk_tree_model_iter_parent(model, &parent, &iter_);

        while (valid) {

                iter_ = parent;

                if (gtk_tree_model_iter_next(model, &iter_)) {

                        *iter = iter_;

                        return TRUE;

                }

                iter_ = parent;

                valid = gtk_tree_model_iter_parent(model, &parent, &iter_);

        }

        return FALSE;

}

gboolean gtkut_tree_model_find_by_column_data(GtkTreeModel *model,

                                              GtkTreeIter *iter,

                                              GtkTreeIter *start,

                                              gint col, gpointer data)

{

        gboolean valid;

        GtkTreeIter iter_;

        gpointer store_data;

        if (start)

                valid = gtk_tree_model_iter_children(model, &iter_, start);

        else

                valid = gtk_tree_model_get_iter_first(model, &iter_);

        while (valid) {

                gtk_tree_model_get(model, &iter_, col, &store_data, -1);

                if (store_data == data) {

                        *iter = iter_;

                        return TRUE;

                }

                if (gtk_tree_model_iter_has_child(model, &iter_)) {

                        if (gtkut_tree_model_find_by_column_data

                                (model, iter, &iter_, col, data)) {

                                return TRUE;

                        }

                }

                valid = gtk_tree_model_iter_next(model, &iter_);

        }

        return FALSE;

}

gboolean gtkut_tree_view_find_collapsed_parent(GtkTreeView *treeview,

                                               GtkTreeIter *parent,

                                               GtkTreeIter *iter)

{

        GtkTreeModel *model;

        GtkTreeIter iter_, parent_;

        GtkTreePath *path;

        gboolean valid;

        if (!iter) return FALSE;

        model = gtk_tree_view_get_model(treeview);

        valid = gtk_tree_model_iter_parent(model, &parent_, iter);

        while (valid) {

                path = gtk_tree_model_get_path(model, &parent_);

                if (!gtk_tree_view_row_expanded(treeview, path)) {

                        *parent = parent_;

                        gtk_tree_path_free(path);

                        return TRUE;

                }

                gtk_tree_path_free(path);

                iter_ = parent_;

                valid = gtk_tree_model_iter_parent(model, &parent_, &iter_);

        }

        return FALSE;

}

void gtkut_combo_set_items(GtkCombo *combo, const gchar *str1, ...)

{

        va_list args;

        gchar *s;

        GList *combo_items = NULL;

        g_return_if_fail(str1 != NULL);

        combo_items = g_list_append(combo_items, (gpointer)str1);

        va_start(args, str1);

        s = va_arg(args, gchar*);

        while (s) {

                combo_items = g_list_append(combo_items, (gpointer)s);

                s = va_arg(args, gchar*);

        }

        va_end(args);

        gtk_combo_set_popdown_strings(combo, combo_items);

        g_list_free(combo_items);

}

gchar *gtkut_editable_get_selection(GtkEditable *editable)

{

        guint start_pos, end_pos;

        gboolean found;

        g_return_val_if_fail(GTK_IS_EDITABLE(editable), NULL);

        found = gtk_editable_get_selection_bounds(editable,

                                                  &start_pos, &end_pos);

        if (found)

                return gtk_editable_get_chars(editable, start_pos, end_pos);

        else

                return NULL;

}

void gtkut_editable_disable_im(GtkEditable *editable)

{

        g_return_if_fail(editable != NULL);

#if USE_XIM

        if (editable->ic) {

                gdk_ic_destroy(editable->ic);

                editable->ic = NULL;

        }

        if (editable->ic_attr) {

                gdk_ic_attr_destroy(editable->ic_attr);

                editable->ic_attr = NULL;

        }

#endif

}

void gtkut_container_remove(GtkContainer *container, GtkWidget *widget)

{

        gtk_container_remove(container, widget);

}

void gtkut_scrolled_window_reset_position(GtkScrolledWindow *window)

{

        GtkAdjustment *adj;

        adj = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(window));

        gtk_adjustment_set_value(adj, adj->lower);

        adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(window));

        gtk_adjustment_set_value(adj, adj->lower);

}

gboolean gtkut_text_buffer_match_string(GtkTextBuffer *textbuf,

                                        const GtkTextIter *iter,

                                        gunichar *wcs, gint len,

                                        gboolean case_sens)

{

        GtkTextIter start_iter, end_iter;

        gchar *utf8str, *p;

        gint match_count;

        start_iter = end_iter = *iter;

        gtk_text_iter_forward_chars(&end_iter, len);

        utf8str = gtk_text_buffer_get_text(textbuf, &start_iter, &end_iter,

                                           FALSE);

        if (!utf8str) return FALSE;

        if ((gint)g_utf8_strlen(utf8str, -1) != len) {

                g_free(utf8str);

                return FALSE;

        }

        for (p = utf8str, match_count = 0;

             *p != '\0' && match_count < len;

             p = g_utf8_next_char(p), match_count++) {

                gunichar wc;

                wc = g_utf8_get_char(p);

                if (case_sens) {

                        if (wc != wcs[match_count])

                                break;

                } else {

                        if (g_unichar_tolower(wc) !=

                            g_unichar_tolower(wcs[match_count]))

                                break;

                }

        }

        g_free(utf8str);

        if (match_count == len)

                return TRUE;

        else

                return FALSE;

}

gboolean gtkut_text_buffer_find(GtkTextBuffer *buffer, const GtkTextIter *iter,

                                const gchar *str, gboolean case_sens,

                                GtkTextIter *match_pos)

{

        gunichar *wcs;

        gint len;

        glong items_read = 0, items_written = 0;

        GError *error = NULL;

        GtkTextIter iter_;

        gboolean found = FALSE;

        wcs = g_utf8_to_ucs4(str, -1, &items_read, &items_written, &error);

        if (error != NULL) {

                g_warning("An error occured while converting a string from UTF-8 to UCS-4: %s\n", error->message);

                g_error_free(error);

        }

        if (!wcs || items_written <= 0) return FALSE;

        len = (gint)items_written;

        iter_ = *iter;

        do {

                found = gtkut_text_buffer_match_string

                        (buffer, &iter_, wcs, len, case_sens);

                if (found) {

                        *match_pos = iter_;

                        break;

                }

        } while (gtk_text_iter_forward_char(&iter_));

        g_free(wcs);

        return found;

}

gboolean gtkut_text_buffer_find_backward(GtkTextBuffer *buffer,

                                         const GtkTextIter *iter,

                                         const gchar *str, gboolean case_sens,

                                         GtkTextIter *match_pos)

{

        gunichar *wcs;

        gint len;

        glong items_read = 0, items_written = 0;

        GError *error = NULL;

        GtkTextIter iter_;

        gboolean found = FALSE;

        wcs = g_utf8_to_ucs4(str, -1, &items_read, &items_written, &error);

        if (error != NULL) {

                g_warning("An error occured while converting a string from UTF-8 to UCS-4: %s\n", error->message);

                g_error_free(error);

        }

        if (!wcs || items_written <= 0) return FALSE;

        len = (gint)items_written;

        iter_ = *iter;

        while (gtk_text_iter_backward_char(&iter_)) {

                found = gtkut_text_buffer_match_string

                        (buffer, &iter_, wcs, len, case_sens);

                if (found) {

                        *match_pos = iter_;

                        break;

                }

        }

        g_free(wcs);

        return found;

}

#define MAX_TEXT_LINE_LEN        8190

void gtkut_text_buffer_insert_with_tag_by_name(GtkTextBuffer *buffer,

                                               GtkTextIter *iter,

                                               const gchar *text,

                                               gint len,

                                               const gchar *tag)

{

        if (len < 0)

                len = strlen(text);

        gtk_text_buffer_insert_with_tags_by_name

                (buffer, iter, text, len, tag, NULL);

        if (text[len - 1] != '\n') {

                /* somehow returns invalid value first (bug?),

                   so call it twice */

                gtk_text_iter_get_chars_in_line(iter);

                if (gtk_text_iter_get_chars_in_line(iter) > MAX_TEXT_LINE_LEN) {

                        gtk_text_buffer_insert_with_tags_by_name

                                (buffer, iter, "\n", 1, tag, NULL);

                }

        }

}

gchar *gtkut_text_view_get_selection(GtkTextView *textview)

{

        GtkTextBuffer *buffer;

        GtkTextIter start_iter, end_iter;

        gboolean found;

        g_return_val_if_fail(GTK_IS_TEXT_VIEW(textview), NULL);

        buffer = gtk_text_view_get_buffer(textview);

        found = gtk_text_buffer_get_selection_bounds(buffer,

                                                     &start_iter, &end_iter);

        if (found)

                return gtk_text_buffer_get_text(buffer, &start_iter, &end_iter,

                                                FALSE);

        else

                return NULL;

}

void gtkut_window_popup(GtkWidget *window)

{

        gint x, y, sx, sy, new_x, new_y;

        g_return_if_fail(window != NULL);

        g_return_if_fail(window->window != NULL);

        sx = gdk_screen_width();

        sy = gdk_screen_height();

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

        new_x = x % sx; if (new_x < 0) new_x = 0;

        new_y = y % sy; if (new_y < 0) new_y = 0;

        if (new_x != x || new_y != y)

                gdk_window_move(window->window, new_x, new_y);

        gtk_window_present(GTK_WINDOW(window));

}

void gtkut_widget_get_uposition(GtkWidget *widget, gint *px, gint *py)

{

        gint x, y;

        gint sx, sy;

        g_return_if_fail(widget != NULL);

        g_return_if_fail(widget->window != NULL);

        sx = gdk_screen_width();

        sy = gdk_screen_height();

        /* gdk_window_get_root_origin ever return *rootwindow*'s position */

        gdk_window_get_root_origin(widget->window, &x, &y);

        x %= sx; if (x < 0) x = 0;

        y %= sy; if (y < 0) y = 0;

        *px = x;

        *py = y;

}

#warning FIXME_GTK2

void gtkut_widget_wait_for_draw(GtkWidget *widget)

{

        if (!GTK_WIDGET_VISIBLE(widget) || !GTK_WIDGET_MAPPED(widget)) return;

        while (gtk_events_pending())

                gtk_main_iteration();

}

static void gtkut_clist_bindings_add(GtkWidget *clist)

{

        GtkBindingSet *binding_set;

        binding_set = gtk_binding_set_by_class(GTK_CLIST_GET_CLASS(clist));

        gtk_binding_entry_add_signal(binding_set, GDK_n, GDK_CONTROL_MASK,

                                     "scroll_vertical", 2,

                                     G_TYPE_ENUM, GTK_SCROLL_STEP_FORWARD,

                                     G_TYPE_FLOAT, 0.0);

        gtk_binding_entry_add_signal(binding_set, GDK_p, GDK_CONTROL_MASK,

                                     "scroll_vertical", 2,

                                     G_TYPE_ENUM, GTK_SCROLL_STEP_BACKWARD,

                                     G_TYPE_FLOAT, 0.0);

}

void gtkut_widget_init(void)

{

        GtkWidget *clist;

        clist = gtk_clist_new(1);

        g_object_ref(G_OBJECT(clist));

        gtk_object_sink(GTK_OBJECT(clist));

        gtkut_clist_bindings_add(clist);

        g_object_unref(G_OBJECT(clist));

        clist = gtk_ctree_new(1, 0);

        g_object_ref(G_OBJECT(clist));

        gtk_object_sink(GTK_OBJECT(clist));

        gtkut_clist_bindings_add(clist);

        g_object_unref(G_OBJECT(clist));

        clist = gtk_sctree_new_with_titles(1, 0, NULL);

        g_object_ref(G_OBJECT(clist));

        gtk_object_sink(GTK_OBJECT(clist));

        gtkut_clist_bindings_add(clist);

        g_object_unref(G_OBJECT(clist));

}