qulogic/libgnt

Make the combobox a bit more friendly.

2010-07-05, Sadrul Habib Chowdhury
47a58a8fcb6e
Make the combobox a bit more friendly.

While the dropdown in the combobox is not shown, and some key is pressed
that triggers an action in the dropdown (e.g. home, end keys etc.), popup
the dropdown.
/**
* GNT - The GLib Ncurses Toolkit
*
* GNT is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This library 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include "gntinternal.h"
#include "gntstyle.h"
#include "gntwindow.h"
#include <string.h>
struct _GntWindowPriv
{
GHashTable *accels; /* key => menuitem-id */
GntWindowFlags flags;
};
enum
{
SIG_WORKSPACE_HIDE,
SIG_WORKSPACE_SHOW,
SIGS,
};
static guint signals[SIGS] = { 0 };
static GntBoxClass *parent_class = NULL;
static void (*org_destroy)(GntWidget *widget);
static gboolean
show_menu(GntBindable *bind, GList *null)
{
GntWindow *win = GNT_WINDOW(bind);
if (win->menu) {
GntMenu *menu = win->menu;
gnt_screen_menu_show(menu);
if (menu->type == GNT_MENU_TOPLEVEL) {
GntMenuItem *item;
item = g_list_nth_data(menu->list, menu->selected);
if (item && gnt_menuitem_get_submenu(item)) {
gnt_widget_activate(GNT_WIDGET(menu));
}
}
return TRUE;
}
return FALSE;
}
static void
gnt_window_destroy(GntWidget *widget)
{
GntWindow *window = GNT_WINDOW(widget);
if (window->menu)
gnt_widget_destroy(GNT_WIDGET(window->menu));
if (window->priv) {
if (window->priv->accels)
g_hash_table_destroy(window->priv->accels);
g_free(window->priv);
}
org_destroy(widget);
}
static void
gnt_window_class_init(GntWindowClass *klass)
{
GntBindableClass *bindable = GNT_BINDABLE_CLASS(klass);
GntWidgetClass *wid_class = GNT_WIDGET_CLASS(klass);
parent_class = GNT_BOX_CLASS(klass);
org_destroy = wid_class->destroy;
wid_class->destroy = gnt_window_destroy;
signals[SIG_WORKSPACE_HIDE] =
g_signal_new("workspace-hidden",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[SIG_WORKSPACE_SHOW] =
g_signal_new("workspace-shown",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gnt_bindable_class_register_action(bindable, "show-menu", show_menu,
GNT_KEY_CTRL_O, NULL);
gnt_bindable_register_binding(bindable, "show-menu", GNT_KEY_F10, NULL);
gnt_style_read_actions(G_OBJECT_CLASS_TYPE(klass), bindable);
GNTDEBUG;
}
static void
gnt_window_init(GTypeInstance *instance, gpointer class)
{
GntWidget *widget = GNT_WIDGET(instance);
GntWindow *win = GNT_WINDOW(widget);
GNT_WIDGET_UNSET_FLAGS(widget, GNT_WIDGET_NO_BORDER | GNT_WIDGET_NO_SHADOW);
GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_CAN_TAKE_FOCUS);
win->priv = g_new0(GntWindowPriv, 1);
win->priv->accels = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
GNTDEBUG;
}
/******************************************************************************
* GntWindow API
*****************************************************************************/
GType
gnt_window_get_gtype(void)
{
static GType type = 0;
if(type == 0)
{
static const GTypeInfo info = {
sizeof(GntWindowClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc)gnt_window_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(GntWindow),
0, /* n_preallocs */
gnt_window_init, /* instance_init */
NULL /* value_table */
};
type = g_type_register_static(GNT_TYPE_BOX,
"GntWindow",
&info, 0);
}
return type;
}
GntWidget *gnt_window_new()
{
GntWidget *widget = g_object_new(GNT_TYPE_WINDOW, NULL);
return widget;
}
GntWidget *gnt_window_box_new(gboolean homo, gboolean vert)
{
GntWidget *wid = gnt_window_new();
GntBox *box = GNT_BOX(wid);
box->homogeneous = homo;
box->vertical = vert;
box->alignment = vert ? GNT_ALIGN_LEFT : GNT_ALIGN_MID;
return wid;
}
void
gnt_window_workspace_hiding(GntWindow *window)
{
if (window->menu)
gnt_widget_hide(GNT_WIDGET(window->menu));
g_signal_emit(window, signals[SIG_WORKSPACE_HIDE], 0);
}
void
gnt_window_workspace_showing(GntWindow *window)
{
g_signal_emit(window, signals[SIG_WORKSPACE_SHOW], 0);
}
void gnt_window_set_menu(GntWindow *window, GntMenu *menu)
{
/* If a menu already existed, then destroy that first. */
const char *name = gnt_widget_get_name(GNT_WIDGET(window));
if (window->menu)
gnt_widget_destroy(GNT_WIDGET(window->menu));
window->menu = menu;
if (name && window->priv) {
if (!gnt_style_read_menu_accels(name, window->priv->accels)) {
g_hash_table_destroy(window->priv->accels);
window->priv->accels = NULL;
}
}
}
const char * gnt_window_get_accel_item(GntWindow *window, const char *key)
{
if (window->priv->accels)
return g_hash_table_lookup(window->priv->accels, key);
return NULL;
}
void gnt_window_set_maximize(GntWindow *window, GntWindowFlags maximize)
{
if (maximize & GNT_WINDOW_MAXIMIZE_X)
window->priv->flags |= GNT_WINDOW_MAXIMIZE_X;
else
window->priv->flags &= ~GNT_WINDOW_MAXIMIZE_X;
if (maximize & GNT_WINDOW_MAXIMIZE_Y)
window->priv->flags |= GNT_WINDOW_MAXIMIZE_Y;
else
window->priv->flags &= ~GNT_WINDOW_MAXIMIZE_Y;
}
GntWindowFlags gnt_window_get_maximize(GntWindow *window)
{
return (window->priv->flags & (GNT_WINDOW_MAXIMIZE_X | GNT_WINDOW_MAXIMIZE_Y));
}