/* AbiWord
 * Copyright (C) 1998 AbiSource, Inc.
 * 
 * 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.
 */

#include <gtk/gtk.h>
#include "ut_types.h"
#include "ut_assert.h"
#include "ut_debugmsg.h"
#include "xap_Frame.h"
#include "xap_Frame.h"
#include "gr_UnixGraphics.h"
#include "ap_UnixClipartPane.h"
#include "xap_UnixDialogHelper.h"

//////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////


#define _BYTE   8

AP_UnixClipartPane::AP_UnixClipartPane(XAP_Frame * pFrame) 
	: AP_ClipartPane(pFrame)
{
	m_wClipartPane = NULL;
//	m_pFrame = pFrame;
}

AP_UnixClipartPane::~AP_UnixClipartPane(void)
{
}

// FIXME: we need more sanity checking here to make sure everything allocates correctly
GtkWidget * AP_UnixClipartPane::createWidget(void)
{
	UT_ASSERT(!m_wClipartPane);
	
	/* 
	 * This method creates a pane containing clipart that can be dragged into AbiWord
	 * documents.  It returns a set of nested widgets that look like this:
	 * 
	 *		GtkScrolledWindow (m_wClipartPane)
	 *		|_	GtkViewport
	 *			|_	GtkHBox (clipartHBox)
	 * 			|_	GtkImage
	 * 			|_	GtkImage
	 * 			|_	...
	 */

	m_wClipartPane = gtk_scrolled_window_new(NULL,NULL);

	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(m_wClipartPane),
		GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
	
	GtkWidget* clipartHBox;
	clipartHBox = gtk_hbox_new(true, 10);

	// FIXME: this obviously should not be hardcoded.
	gchar * clipartPath = "/home/erik/Sugar/sugar-jhbuild/build/share/clipart";

	GDir * clipartDir;
	GError * openError;
	clipartDir = g_dir_open (clipartPath, 0, &openError);
	UT_ASSERT(clipartDir);

	static GtkTargetEntry target_list[] = {
		{ "STRING", 0, 0 }, 
	};
	static guint n_targets = G_N_ELEMENTS (target_list);

	while (TRUE)
    {
		const gchar *basename = g_dir_read_name (clipartDir);
		if (!basename)
			break;

		gchar * fullpath = g_strconcat(clipartPath, "/", basename, NULL);
		UT_DEBUGMSG(("image: %s\n", fullpath));
		GtkWidget * image;		
		image = gtk_image_new_from_file(fullpath);

		GtkWidget* button;
		button = gtk_button_new();
		g_object_set(G_OBJECT(button), "user-data", fullpath, NULL);
		
		// FIXME: we need to free this eventually, but not now.  When?
		// free(fullpath);

		gtk_button_set_image(GTK_BUTTON(button), image);
		gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
		gtk_drag_source_set(button, GDK_BUTTON1_MASK, target_list, n_targets, GDK_ACTION_COPY);
		g_signal_connect (G_OBJECT(button), "drag-data-get",
                G_CALLBACK (AP_UnixClipartPane::drag_data_get_callback), NULL);

		gtk_widget_show(button);
		gtk_container_add(GTK_CONTAINER(clipartHBox), button);
    }

	g_dir_close (clipartDir);

	gtk_widget_show(clipartHBox);
	gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(m_wClipartPane),
		clipartHBox);
			
	return m_wClipartPane;
}

///////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////
	
void AP_UnixClipartPane::show(void)
{
	gtk_widget_show (m_wClipartPane);
}

void AP_UnixClipartPane::hide(void)
{
	gtk_widget_hide (m_wClipartPane);
	m_pFrame->queue_resize();
}

void AP_UnixClipartPane::drag_data_get_callback (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint target_type, guint time, gpointer user_data)
{
	UT_DEBUGMSG(("drag data requested\n"));

	gchar *strval;
	g_object_get(G_OBJECT(widget), "user-data", &strval, NULL);
	UT_DEBUGMSG(("data: %s\n", strval));

	gtk_selection_data_set 
	(
		selection_data,         
		selection_data-> target,
		_BYTE,                  
		(guchar*) strval,
		strlen (strval)
	);
}