/* Classic Ladder Project */
/* Copyright (C) 2001-2007 Marc Le Douarain */
/* http://membres.lycos.fr/mavati/classicladder/ */
/* http://www.sourceforge.net/projects/classicladder */
/* October 2006 */
/* -------------------- */
/* Symbols - GTK window */
/* -------------------- */
/* This library is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU Lesser General Public */
/* License as published by the Free Software Foundation; either */
/* version 2.1 of the License, or (at your option) any later version. */

/* This library 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 */
/* Lesser General Public License for more details. */

/* You should have received a copy of the GNU Lesser General Public */
/* License along with this library; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include <gtk/gtk.h>
#include <stdio.h>
#include <string.h>
#include "classicladder.h"
#include "global.h"
#include "edit.h"
#include "classicladder_gtk.h"
#include "vars_names.h"
#include "symbols_gtk.h"

GtkWidget *SymbolsWindow;
GtkListStore *ListStore;

// NUM_ARRAY is a hidden column (=number in the symbols array)
enum
{
	NUM_ARRAY,
	VAR_NAME,
	SYMBOL,
	COMMENT,
	NBR_INFOS
};

// a little change to check present variables for HAL signals and post them in the comment slot of window
// you can still comment other Variables
void DisplaySymbols( void )
{
	GtkTreeIter   iter;
	int ScanSymb;
	static char Tempbuf[100];

	gtk_list_store_clear( ListStore );

	for ( ScanSymb=0; ScanSymb<NBR_SYMBOLS; ScanSymb++ )
	{
		if(SymbolArray[ ScanSymb ].VarName [0] =='\0')  {

                snprintf(Tempbuf,LGT_SYMBOL_COMMENT, " ");
                gtk_list_store_append( ListStore, &iter );
		gtk_list_store_set( ListStore, &iter,
		    NUM_ARRAY, ScanSymb,
                    VAR_NAME, SymbolArray[ ScanSymb].VarName,
                    SYMBOL, SymbolArray[ ScanSymb ].Symbol,
                    COMMENT, Tempbuf,-1);
		return;
								}
		
	switch(SymbolArray[ ScanSymb ].VarName [1]) {
		case 'I':case 'Q':case 'W':
			snprintf(Tempbuf, LGT_SYMBOL_COMMENT, "%s",ConvVarNameToHalSigName(SymbolArray[ ScanSymb ].VarName));
		break;
		default:
			snprintf(Tempbuf,LGT_SYMBOL_COMMENT, "%s",SymbolArray[ ScanSymb ].Comment);
		break;
						}

	// fill the element
		gtk_list_store_append( ListStore, &iter );
		gtk_list_store_set( ListStore, &iter,
					NUM_ARRAY, ScanSymb,
                    VAR_NAME, SymbolArray[ ScanSymb ].VarName,
                    SYMBOL, SymbolArray[ ScanSymb ].Symbol,
                    COMMENT, Tempbuf,
                    -1);
	}

}

/* The callback for the editing of text in our GtkTreeView */
/* data=column number */
// added a call to DisplaySymbols() so window updates right away
void Callback_TextEdited(GtkCellRendererText *cell, gchar *path_string,
		      gchar *new_text, gpointer data) {

	int OffsetArray = -999;
	StrSymbol * pSymbol;
	GtkTreeModel *treemodel = (GtkTreeModel *)ListStore;
	GtkTreeIter iter;

	/* Convert the string path to the row that has changed to a GtkIter */
	gtk_tree_model_get_iter (treemodel, &iter, gtk_tree_path_new_from_string (path_string));

	/* Update the GtkTreeModel with the new value */
	gtk_tree_model_get (treemodel, &iter,
						NUM_ARRAY, &OffsetArray,
						-1);
	gtk_list_store_set( ListStore, &iter,
					data, new_text, -1);
//printf( "path=%s, new_text=%s, data_column=%d, offset_array=%d\n",path_string, new_text, (int)data, OffsetArray );
	pSymbol = &SymbolArray[ OffsetArray ];
	switch( (long)data )
	{
		case VAR_NAME:
			if ( new_text[ 0 ]!='%' )
			{
				ShowMessageBox("Error","A variable name always start with '%' character !","Ok");
			}
			else
			{
				if (TextParserForAVar( new_text, NULL, NULL, NULL, TRUE/*PartialNames*/ ) )
				{
					strncpy( pSymbol->VarName, new_text, LGT_VAR_NAME-1 );
					pSymbol->VarName[ LGT_VAR_NAME-1 ] = '\0';
					gtk_list_store_set( ListStore, &iter, data, pSymbol->VarName, -1);
					if ( pSymbol->Symbol[0]=='\0' )
						strcpy( pSymbol->Symbol, "***" );
					InfosGene->AskConfirmationToQuit = TRUE;
				}
				else
				{
					if (ErrorMessageVarParser)
						ShowMessageBox( "Error", ErrorMessageVarParser, "Ok" );
					else
						ShowMessageBox( "Error", "Unknown variable...", "Ok" );
				}
			}
			break;
		case SYMBOL:
			strncpy( pSymbol->Symbol, new_text, LGT_SYMBOL_STRING-1 );
			pSymbol->Symbol[ LGT_SYMBOL_STRING-1 ] = '\0';
			gtk_list_store_set( ListStore, &iter, data, pSymbol->Symbol, -1);
			InfosGene->AskConfirmationToQuit = TRUE;
			break; 
		case COMMENT:
			strncpy( pSymbol->Comment, new_text, LGT_SYMBOL_COMMENT-1 );
			pSymbol->Comment[ LGT_SYMBOL_COMMENT-1 ] = '\0';
			gtk_list_store_set( ListStore, &iter, data, pSymbol->Comment, -1);
			InfosGene->AskConfirmationToQuit = TRUE;
			break;
	}
DisplaySymbols();
}


gint SymbolsWindowDeleteEvent( GtkWidget * widget, GdkEvent * event, gpointer data )
{
	gtk_widget_hide( SymbolsWindow );
	// we do not want that the window be destroyed.
	return TRUE;
}

void OpenSymbolsWindow( void )
{
	if ( !GTK_WIDGET_VISIBLE( SymbolsWindow ) )
	{ DisplaySymbols();
		gtk_widget_show (SymbolsWindow);
		MessageInStatusBar("openned SYMBOLS window. Press again to close");
#ifdef GTK2
		gtk_window_present( GTK_WINDOW(SymbolsWindow) );
#endif
	}
	else
	{
		gtk_widget_hide( SymbolsWindow );
		MessageInStatusBar("");
	}
}

void SymbolsInitGtk()
{
	GtkWidget  *scrolled_win, *vbox;
	GtkWidget *ListView;
	GtkCellRenderer   *renderer;
	long ScanCol;
	char * ColName[] = { "HiddenColNbr!", "Variable", "Symbol name", "HAL signal/Comment" };

	SymbolsWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
	gtk_window_set_title( GTK_WINDOW( SymbolsWindow ), "Symbols names" );
	gtk_signal_connect( GTK_OBJECT( SymbolsWindow ), "delete_event",
		(GtkSignalFunc)SymbolsWindowDeleteEvent, 0 );

	vbox = gtk_vbox_new(FALSE,0);

	/* Create a list-model and the view. */
	ListStore = gtk_list_store_new( NBR_INFOS, G_TYPE_INT, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING );
	ListView = gtk_tree_view_new_with_model ( GTK_TREE_MODEL(ListStore) );

	/* Add the columns to the view. */
	for (ScanCol=1; ScanCol<NBR_INFOS; ScanCol++)
	{
		GtkTreeViewColumn *column;
		renderer = gtk_cell_renderer_text_new();
		g_object_set(renderer, "editable", TRUE, NULL);
//TODO? gtk_entry_set_max_length(GTK_ENTRY(  ),9);
		g_signal_connect( G_OBJECT(renderer), "edited", G_CALLBACK(Callback_TextEdited), (gpointer)ScanCol );
		column = gtk_tree_view_column_new_with_attributes( ColName[ ScanCol ], renderer, "text", ScanCol, NULL );
		gtk_tree_view_append_column( GTK_TREE_VIEW(ListView), column );
		gtk_tree_view_column_set_resizable( column, TRUE );
		gtk_tree_view_column_set_sort_column_id( column, ScanCol );
	}
//	avail since gtk v2.10...?
//	gtk_tree_view_set_grid_lines( GTK_TREE_VIEW(ListView), GTK_TREE_VIEW_GRID_LINES_BOTH );

	scrolled_win = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW (scrolled_win),
                                    GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
	// here we add the view to the scrolled !
	gtk_container_add(GTK_CONTAINER(scrolled_win), ListView);
	gtk_box_pack_start(GTK_BOX (vbox), scrolled_win, TRUE, TRUE, 0);

//	gtk_widget_set_size_request( SymbolsWindow, 300, 250 ); // minimum size
gtk_window_set_default_size (GTK_WINDOW (SymbolsWindow), -1, 250);

	gtk_widget_show( scrolled_win );
	gtk_widget_show( ListView );
	gtk_container_add( GTK_CONTAINER(SymbolsWindow), vbox );
	gtk_widget_show( vbox );

//gtk_widget_show (SymbolsWindow);
}