/*
 *  Text Edit
 *  ---------
 *  A sample text editor written using GraphApp. Some functions may not
 *  work yet.
 */

#include <graphapp.h>
#include <string.h>

char *progname	= "TextEdit: ";
textbox text	= NULL;
char *filename	= NULL;
char *data	= NULL;

char *addstrings(char *a, char *b)
{
	int size;
	char *str;

	size = strlen(a) + strlen(b) + 1;
	str = (char *) malloc(size);
	if (str != NULL) {
		strcpy(str, a);
		strcat(str, b);
	}
	return str;
}

void quit(menuitem m)
{
	exitapp();
}

void new_file(menuitem m)
{
	settext(text, NULL);
	free(filename);
	filename = NULL;
}

void open_as(menuitem m)
{
	FILE *f;
	char *name = askfilename(NULL, NULL);
/*
	if (name == NULL)
		return;
	else {
		f = fopen(name, "r");
		if (f == NULL) {
			askok("Couldn't read the file!");
			return;
		}
		fclose(f);

		free(filename);
		filename = strdup(name);
	}
*/
}

void save_as(menuitem m)
{
	FILE *f;
	char *name = askfilesave(NULL, NULL);
/*
	if (name == NULL)
		return;
	else {
		f = fopen(name, "w");
		if (f == NULL) {
			askok("Couldn't save the file!");
			return;
		}
		fprintf(f, "%s", gettext(text));
		fclose(f);

		free(filename);
		filename = strdup(name);
	}
*/
}

void save(menuitem m)
{
	FILE *f;
/*
	if (filename == NULL) {
		save_as(m, value);
		return;
	}

	f = fopen(filename, "w");
	if (f == NULL) {
		askok("Couldn't save the file!");
		return;
	}
	fprintf(f, "%s", gettext(text));
	fclose(f);
*/
}

void resize_window(window w, rect r)
{
	int changed = 0;

	if (r.height < 100) {
		r.height = 100;
		changed = 1;
	}
	if (r.width < 200) {
		r.width = 200;
		changed = 1;
	}

	if (text)
		resize(text, r);
	if (changed)
		resize(w, r);
}

void cut_selection(menuitem m)
{
	cuttext(text);
}

void copy_selection(menuitem m)
{
	copytext(text);
}

void paste_selection(menuitem m)
{
	pastetext(text);
}

void clear_selection(menuitem m)
{
	cleartext(text);
}

void select_all(menuitem m)
{
	selecttext(text, 0, -1);
}

void goto_start(menuitem m)
{
	selecttext(text, 0, 0);
}

void goto_end(menuitem m)
{
	selecttext(text, -1, -1);
}

void add_line(menuitem m)
{
	inserttext(text, "---------");
}

void main(void)
{
	window w;
	rect r;
	char *window_name;

	window_name = addstrings(progname, "Untitled");
	w = newwindow(window_name, rect(0,0,500,440), StandardWindow);
	free(window_name);

	setresize(w, resize_window);

	newmenubar(NULL);

	newmenu("File");
	newmenuitem("New",        'N', new_file );
	newmenuitem("Open...",    'O', open_as  );
	newmenuitem("Save",       'S', save     );
	newmenuitem("Save As...", 'A', save_as  );
	newmenuitem("-",           0,  NULL     );
	newmenuitem("Quit",       'Q', quit     );

	newmenu("Edit");
	newmenuitem("Cut",        'X', cut_selection    );
	newmenuitem("Copy",       'C', copy_selection   );
	newmenuitem("Paste",      'V', paste_selection  );
	newmenuitem("Clear",       0,  clear_selection  );
	newmenuitem("Select All",  0,  select_all       );
	newmenuitem("-",           0,  NULL             );
	newmenuitem("Go to Start", 0,  goto_start       );
	newmenuitem("Go to End",   0,  goto_end         );
	newmenuitem("-",           0,  NULL             );
	newmenuitem("Insert Line", 0,  add_line         );

	text = newtextbox(NULL, rect(0,0,500,440));

	show(w);
	mainloop();
}