/*
 * widget_frame.c: 
 * Gtkdialog - A small utility for fast and easy GUI building.
 * Copyright (C) 2003-2007  László Pere <pipas@linux.pte.hu>
 * Copyright (C) 2011-2012  Thunor <thunorsif@hotmail.com>
 * Copyright (C) 2018       William McEwan (wiak) <admin@tinylinux.info>
 * 
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/* Includes */
#define _GNU_SOURCE
#include <gtk/gtk.h>
#include "config.h"
#include "gtkdialog.h"
#include "attributes.h"
#include "automaton.h"
#include "widgets.h"
#include "signals.h"
#include "tag_attributes.h"

/* Defines */
//#define DEBUG_CONTENT
//#define DEBUG_TRANSITS

/* Local function prototypes, located at file bottom */
static void widget_frame_input_by_command(variable *var, char *command);
static void widget_frame_input_by_file(variable *var, char *filename);
static void widget_frame_input_by_items(variable *var);

/* Notes: */

/***********************************************************************
 * Clear                                                               *
 ***********************************************************************/

void widget_frame_clear(variable *var)
{
	gchar            *var1;
	gint              var2;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	gtk_frame_set_label(GTK_FRAME(var->Widget), "");

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Create                                                              *
 ***********************************************************************/
GtkWidget *widget_frame_create(
	AttributeSet *Attr, tag_attr *attr, gint Type)
{
	gchar            *value;
	gint              n;
	gint              original_expand, original_fill;
	gint              space_expand, space_fill;
	GList            *element;
	GtkWidget        *vbox;
	GtkWidget        *widget;
	stackelement      s;
	variable         *var;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	/* Set a default label */
	attributeset_set_if_unset(Attr, ATTR_LABEL, "");

	/* Create the frame widget */
	widget = gtk_frame_new(attributeset_get_first(&element, 
		Attr, ATTR_LABEL));

	/* Thunor: I'm noting this embedded unreachable vbox spacing
	 * and the border_width that can't be overidden because of
	 * the frame widget not supporting tag attributes temp temp */
#if !GTK_CHECK_VERSION(3,0,0)	/* gtk3: Deprecated in gtk3 so I've added the newly recommended equivalent */
	vbox = gtk_vbox_new(FALSE, 5);
#else
	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 5);
	gtk_box_set_homogeneous(GTK_BOX(vbox), FALSE);
#endif

	gtk_container_set_border_width(GTK_CONTAINER(vbox), 5);

	/* Calculate values for expand and fill at the container level.
	 * 
	 * Thunor: Because of this embedded unreachable vbox it's
	 * not possible to control expand and fill from custom tag
	 * attributes at the container level. The way around this is
	 * to manually insert a vbox widget within the XML temp temp */
	space_expand = project_space_expand;
	space_fill = project_space_fill;

	/* Pack the widgets into the container */
	s = pop();
	for (n = 0; n < s.nwidgets; ++n) {

		/* Calculate values for expand and fill at the widget level */
		var = find_variable_by_widget(s.widgets[n]);
		if (var && var->widget_tag_attr &&
			((value = get_tag_attribute(var->widget_tag_attr, "space-expand")))) {
			if ((strcasecmp(value, "true") == 0) ||
				(strcasecmp(value, "yes") == 0) || (atoi(value) == 1)) {
				space_expand = TRUE;
			} else {
				space_expand = FALSE;
			}
		}
		if (var && var->widget_tag_attr &&
			((value = get_tag_attribute(var->widget_tag_attr, "space-fill")))) {
			if ((strcasecmp(value, "true") == 0) ||
				(strcasecmp(value, "yes") == 0) || (atoi(value) == 1)) {
				space_fill = TRUE;
			} else {
				space_fill = FALSE;
			}
		}

		if (s.widgettypes[n] == WIDGET_EDIT ||
			s.widgettypes[n] == WIDGET_FRAME ||
			s.widgettypes[n] == WIDGET_SCROLLEDW) {
			original_expand = original_fill = TRUE;
		} else {
			original_expand = original_fill = FALSE;
		}
		if (space_expand != -1) original_expand = space_expand;
		if (space_fill != -1) original_fill = space_fill;
#ifdef DEBUG_CONTENT
		fprintf(stderr, "%s(): frame expand=%i fill=%i\n", __func__,
			original_expand, original_fill);
#endif
		gtk_box_pack_start(GTK_BOX(vbox), s.widgets[n],
			original_expand, original_fill, 0);
	}

	gtk_container_add(GTK_CONTAINER(widget), vbox);

	/* This widget has one or more children which require registering */
	widget_visibility_list_add(vbox, attr);

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif

	return widget;
}

/***********************************************************************
 * Environment Variable All Construct                                  *
 ***********************************************************************/

gchar *widget_frame_envvar_all_construct(variable *var)
{
	gchar            *string;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	/* This function should not be connected-up by default */

#ifdef DEBUG_CONTENT
	fprintf(stderr, "%s(): Hello.\n", __func__);
#endif

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif

	return string;
}

/***********************************************************************
 * Environment Variable Construct                                      *
 ***********************************************************************/

gchar *widget_frame_envvar_construct(GtkWidget *widget)
{
	gchar            *string;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	string = g_strdup(gtk_frame_get_label(GTK_FRAME(widget)));

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif

	return string;
}

/***********************************************************************
 * Fileselect                                                          *
 ***********************************************************************/

void widget_frame_fileselect(
	variable *var, const char *name, const char *value)
{
	gchar            *var1;
	gint              var2;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	fprintf(stderr, "%s(): Fileselect not implemented for this widget.\n", __func__);

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Refresh                                                             *
 ***********************************************************************/
void widget_frame_refresh(variable *var)
{
	GList            *element;
	gchar            *act;
	gint              initialised = FALSE;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	/* Get initialised state of widget */
	if (g_object_get_data(G_OBJECT(var->Widget), "_initialised") != NULL)
		initialised = (gint)g_object_get_data(G_OBJECT(var->Widget), "_initialised");

	/* The <input> tag... */
	act = attributeset_get_first(&element, var->Attributes, ATTR_INPUT);
	while (act) {
		if (input_is_shell_command(act))
			widget_frame_input_by_command(var, act + 8);
		/* input file stock = "File:", input file = "File:/path/to/file" */
		if (strncasecmp(act, "file:", 5) == 0 && strlen(act) > 5) {
			if (!initialised) {
				/* Check for file-monitor and create if requested */
				widget_file_monitor_try_create(var, act + 5);
			}
			widget_frame_input_by_file(var, act + 5);
		}
		act = attributeset_get_next(&element, var->Attributes, ATTR_INPUT);
	}

	/* The <item> tags... */
	if (attributeset_is_avail(var->Attributes, ATTR_ITEM))
		widget_frame_input_by_items(var);

	/* Initialise these only once at start-up */
	if (!initialised) {
		/* Apply directives */
		if (attributeset_is_avail(var->Attributes, ATTR_DEFAULT))
			fprintf(stderr, "%s(): <default> not implemented for this widget.\n",
				__func__);
		if (attributeset_is_avail(var->Attributes, ATTR_HEIGHT))
			fprintf(stderr, "%s(): <height> not implemented for this widget.\n",
				__func__);
		if (attributeset_is_avail(var->Attributes, ATTR_WIDTH))
			fprintf(stderr, "%s(): <width> not implemented for this widget.\n",
				__func__);
		if ((attributeset_cmp_left(var->Attributes, ATTR_SENSITIVE, "false")) ||
			(attributeset_cmp_left(var->Attributes, ATTR_SENSITIVE, "disabled")) ||	/* Deprecated */
			(attributeset_cmp_left(var->Attributes, ATTR_SENSITIVE, "no")) ||
			(attributeset_cmp_left(var->Attributes, ATTR_SENSITIVE, "0")))
			gtk_widget_set_sensitive(var->Widget, FALSE);

		/* Connect signals */

	}

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Removeselected                                                      *
 ***********************************************************************/

void widget_frame_removeselected(variable *var)
{
	gchar            *var1;
	gint              var2;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	fprintf(stderr, "%s(): Removeselected not implemented for this widget.\n",
		__func__);

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Save                                                                *
 ***********************************************************************/

void widget_frame_save(variable *var)
{
	FILE             *outfile;
	GList            *element;
	gchar            *act;
	gchar            *filename = NULL;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	/* We'll use the output file filename if available */
	act = attributeset_get_first(&element, var->Attributes, ATTR_OUTPUT);
	while (act) {
		if (strncasecmp(act, "file:", 5) == 0 && strlen(act) > 5) {
			filename = act + 5;
			break;
		}
		act = attributeset_get_next(&element, var->Attributes, ATTR_OUTPUT);
	}

	/* If we have a valid filename then open it and dump the
	 * widget's data to it */
	if (filename) {
		if ((outfile = fopen(filename, "w"))) {
			fprintf(outfile, "%s", gtk_frame_get_label(GTK_FRAME(var->Widget)));
			/* Close the file */
			fclose(outfile);
		} else {
			fprintf(stderr, "%s(): Couldn't open '%s' for writing.\n",
				__func__, filename);
		}
	} else {
		fprintf(stderr, "%s(): No <output file> directive found.\n", __func__);
	}

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Input by Command                                                    *
 ***********************************************************************/

static void widget_frame_input_by_command(variable *var, char *command)
{
	FILE             *infile;
	gchar             line[512] = "";
	size_t	line_size = sizeof(line);
	gint              count;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

#ifdef DEBUG_CONTENT
	fprintf(stderr, "%s(): command: '%s'\n", __func__, command);
#endif

	widget_opencommand2(command, line, line_size);
	if (line[0] != 0){
		gtk_frame_set_label(GTK_FRAME(var->Widget), line);
	}
#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Input by File                                                       *
 ***********************************************************************/

static void widget_frame_input_by_file(variable *var, char *filename)
{
	FILE             *infile;
	gchar             line[512];
	gint              count;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	if (infile = fopen(filename, "r")) {
		/* Just one line */
		if (fgets(line, 512, infile)) {
			/* Enforce end of string in case of max chars read */
			line[512 - 1] = 0;
			/* Remove the trailing [CR]LFs */
			for (count = strlen(line) - 1; count >= 0; count--)
				if (line[count] == 13 || line[count] == 10) line[count] = 0;

			gtk_frame_set_label(GTK_FRAME(var->Widget), line);

		}
		/* Close the file */
		fclose(infile);
	} else {
		fprintf(stderr, "%s(): Couldn't open '%s' for reading.\n", __func__,
			filename);
	}

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}

/***********************************************************************
 * Input by Items                                                      *
 ***********************************************************************/

static void widget_frame_input_by_items(variable *var)
{
	gchar            *var1;
	gint              var2;

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Entering.\n", __func__);
#endif

	fprintf(stderr, "%s(): <item> not implemented for this widget.\n", __func__);

#ifdef DEBUG_TRANSITS
	fprintf(stderr, "%s(): Exiting.\n", __func__);
#endif
}
