/*
   Copyright (C) 2001-2006, William Joseph.
   All Rights Reserved.

   This file is part of GtkRadiant.

   GtkRadiant 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.

   GtkRadiant 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 GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#if !defined( INCLUDED_GTKUTIL_NONMODAL_H )
#define INCLUDED_GTKUTIL_NONMODAL_H

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>

#include "generic/callback.h"

#include "pointer.h"
#include "button.h"

typedef struct _GtkEntry GtkEntry;


inline gboolean escape_clear_focus_widget( GtkWidget* widget, GdkEventKey* event, gpointer data ){
	if ( event->keyval == GDK_KEY_Escape ) {
		gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( widget ) ) ), NULL );
		return TRUE;
	}
	return FALSE;
}

inline void widget_connect_escape_clear_focus_widget( GtkWidget* widget ){
	g_signal_connect( G_OBJECT( widget ), "key_press_event", G_CALLBACK( escape_clear_focus_widget ), 0 );
}


class NonModalEntry
{
bool m_editing;
Callback m_apply;
Callback m_cancel;

static gboolean focus_in( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
	self->m_editing = false;
	return FALSE;
}

static gboolean focus_out( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
	if ( self->m_editing && gtk_widget_get_visible( GTK_WIDGET(entry) ) ) {
		self->m_apply();
	}
	self->m_editing = false;
	return FALSE;
}

static gboolean changed( GtkEntry* entry, NonModalEntry* self ){
	self->m_editing = true;
	return FALSE;
}

static gboolean enter( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
	if ( event->keyval == GDK_Return ) {
		self->m_apply();
		self->m_editing = false;
		gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
		return TRUE;
	}
	return FALSE;
}

static gboolean escape( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
	if ( event->keyval == GDK_Escape ) {
		self->m_cancel();
		self->m_editing = false;
		gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
		return TRUE;
	}
	return FALSE;
}

public:
NonModalEntry( const Callback& apply, const Callback& cancel ) : m_editing( false ), m_apply( apply ), m_cancel( cancel ){
}
void connect( GtkEntry* entry ){
	g_signal_connect( G_OBJECT( entry ), "focus_in_event", G_CALLBACK( focus_in ), this );
	g_signal_connect( G_OBJECT( entry ), "focus_out_event", G_CALLBACK( focus_out ), this );
	g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( enter ), this );
	g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( escape ), this );
	g_signal_connect( G_OBJECT( entry ), "changed", G_CALLBACK( changed ), this );
}
};


class NonModalSpinner
{
Callback m_apply;
Callback m_cancel;

static gboolean changed( GtkSpinButton* spin, NonModalSpinner* self ){
	self->m_apply();
	return FALSE;
}

static gboolean enter( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
	if ( event->keyval == GDK_Return ) {
		gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
		return TRUE;
	}
	return FALSE;
}

static gboolean escape( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
	if ( event->keyval == GDK_Escape ) {
		self->m_cancel();
		gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
		return TRUE;
	}
	return FALSE;
}

public:
NonModalSpinner( const Callback& apply, const Callback& cancel ) : m_apply( apply ), m_cancel( cancel ){
}
void connect( GtkSpinButton* spin ){
	guint handler = g_signal_connect( G_OBJECT( gtk_spin_button_get_adjustment( spin ) ), "value_changed", G_CALLBACK( changed ), this );
	g_object_set_data( G_OBJECT( spin ), "handler", gint_to_pointer( handler ) );
	g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( enter ), this );
	g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( escape ), this );
}
};


class NonModalRadio
{
Callback m_changed;

public:
NonModalRadio( const Callback& changed ) : m_changed( changed ){
}
void connect( GtkRadioButton* radio ){
	GSList* group = gtk_radio_button_get_group( radio );
	for (; group != 0; group = g_slist_next( group ) )
	{
		toggle_button_connect_callback( GTK_TOGGLE_BUTTON( group->data ), m_changed );
	}
}
};


#endif