/*
* cNotify.h
*
* Created on: Jun 16, 2014
* Author: chuck
*/
#ifndef CNOTIFY_H_
#define CNOTIFY_H_
/*
* Graphical Skeleton Program 2-18-2012
* Use at your own risk
*/
#include
/* sessions */
PGconn *dbConn;
int clientID;
char *dbIP;
char *n_val;
void setClientID();
/**** Widget Creation ****/
Widget createMenuBar(Widget appManager);
void createMenuBarItems(Widget menuBar, String menuName);
Widget createAppContent(Widget appManager, Widget menuBar, Widget statusBar);
Widget createStatusBar(Widget appManager);
void createMsgBox(String title, String msg);
/**** Widget Callbacks ****/
void menuBarCB(Widget widget, XtPointer clientData, XtPointer callData);
Boolean notifyCB(XtPointer appShell);
void msgBoxCB(Widget widget, XtPointer clientData, XtPointer callData);
/**** Sets Status Bar Text ****/
void showStatus(String status);
/**** Gets Menu Item Accelerator For menuBarCB ****/
KeySym getMnemonic(String menuName, String menuItemName);
#endif /* CNOTIFY_H_ */
/*
============================================================================
Name : cNotify.c
Author : chuck
Version :
Copyright : Your copyright notice
Description : Hello World in C, Ansi-style
============================================================================
*/
#include
#include
#include
#include "cNotify.h"
/* connect and get db sequence soe, create a file for dialogs */
void setClientID() {
const char *connInfo;
PGresult *res;
//dbIP = "192.168.1.100";
dbIP = "192.168.1.120";
/* connect to cnog db */
asprintf(&connInfo,
"hostaddr=%s port=%s dbname=%s user=%s",
dbIP, "5432", "psqlbsd", "psqlbsd");
printf("connInfo = %s\n", connInfo);
dbConn = PQconnectdb(connInfo);
/* Check to see that the backend connection was successfully made */
if(PQstatus(dbConn) != CONNECTION_OK) {
fprintf(stderr, "Connection to database failed: %s", PQerrorMessage(dbConn));
}
/* get, set clientID */
res = PQexec(dbConn, "select nextval('soe_id_seq');");
printf("PQexec!\n");
printf("PQgetvalue is %s!\n", PQgetvalue(res, 0, 0));
char **ptr = NULL;
//clientID = strtol(PQgetvalue(res, 0, 0), ptr, 10);
//printf("clientID = %d\n", clientID);
PQclear(res);
/* listen - why i'm here */
PQexec(dbConn, "listen noe;");
}
/**** public ****/
Widget statusTextField;
Widget contentManager;
/**** creates the menu bar then creates each menu item ****/
Widget createMenuBar(Widget appManager) {
Widget menuBar;
XmString file;
XmString edit;
file = XmStringCreateLocalized ("File");
edit = XmStringCreateLocalized ("Edit");
menuBar = XmVaCreateSimpleMenuBar(appManager, "menuBar",
XmVaCASCADEBUTTON, file, 'F',
XmVaCASCADEBUTTON, edit, 'E',
XmNleftAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
XmNtopAttachment, XmATTACH_FORM,
NULL);
XmStringFree(file);
XmStringFree(edit);
createMenuBarItems(menuBar, "File");
createMenuBarItems(menuBar, "Edit");
return menuBar;
}
/**** creates the menu items ****/
void createMenuBarItems(Widget menuBar, String menuName) {
if(!strcmp(menuName, "File")) {
XmString open;
XmString save;
XmString exit;
XmString exitAccel;
open = XmStringCreateLocalized("Open...");
save = XmStringCreateLocalized("Save...");
exit = XmStringCreateLocalized("Exit");
exitAccel = XmStringCreateLocalized("Ctrl+Q");
XmVaCreateSimplePulldownMenu (menuBar, "fileMenu", 0, (XtCallbackProc)menuBarCB,
XmVaPUSHBUTTON, open, 'O', NULL, NULL,
XmVaPUSHBUTTON, save, 'S', NULL, NULL,
XmVaSEPARATOR,
XmVaPUSHBUTTON, exit, 'x', "CtrlQ", exitAccel,
NULL);
XmStringFree(open);
XmStringFree(save);
XmStringFree(exit);
XmStringFree(exitAccel);
return;
}
if(!strcmp(menuName, "Edit")) {
XmString cut;
XmString copy;
XmString paste;
XmString clear;
cut = XmStringCreateLocalized("Cut");
copy = XmStringCreateLocalized("Copy");
paste = XmStringCreateLocalized("Paste");
clear = XmStringCreateLocalized("Clear");
XmVaCreateSimplePulldownMenu (menuBar, "editMenu", 1, (XtCallbackProc)menuBarCB,
XmVaPUSHBUTTON, cut, 't', NULL, NULL,
XmVaPUSHBUTTON, copy, 'C', NULL, NULL,
XmVaPUSHBUTTON, paste, 'P', NULL, NULL,
XmVaSEPARATOR,
XmVaPUSHBUTTON, clear, 'l', NULL, NULL,
NULL);
XmStringFree(cut);
XmStringFree(copy);
XmStringFree(paste);
XmStringFree(clear);
}
return;
}
/**** substitute here with a form or something ****/
Widget createAppContent(Widget appManager, Widget menuBar, Widget statusBar) {
Widget appContent;
/* place holder scrolled window */
appContent = XtVaCreateWidget("appContent",
xmScrolledWindowWidgetClass, appManager,
XmNwidth, 400,
XmNheight, 400,
XmNscrollingPolicy, XmAUTOMATIC,
XmNtopAttachment, XmATTACH_WIDGET,
XmNtopWidget, menuBar,
XmNleftAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_WIDGET,
XmNbottomWidget, statusBar,
NULL);
contentManager = appContent;
return appContent;
}
/**** to tell the user what's happening ****/
Widget createStatusBar(Widget appManager) {
Widget statusBar;
statusBar = XtVaCreateManagedWidget ("statusBar",
xmTextFieldWidgetClass, appManager,
XmNeditable, False,
XmNcursorPositionVisible, False,
XmNshadowThickness, 0,
XmNleftAttachment, XmATTACH_FORM,
XmNrightAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
NULL);
statusTextField = statusBar;
return statusBar;
}
/**** a simple (yeah right) message box ****/
void createMsgBox(String title, String msg) {
Widget dialog;
Arg args[14];
int n = 0;
XmString xmTitle = XmStringCreateLocalized(title);
XmString xmMsg = XmStringCreateLocalized(msg);
XtSetArg(args[n], XmNdialogTitle, xmTitle); n++;
XtSetArg(args[n], XmNmessageString, xmMsg); n++;
dialog = XmCreateMessageDialog(contentManager, "simple", args, n);
XtManageChild(dialog);
XtAddCallback(dialog, XmNokCallback, msgBoxCB, (XtPointer)"ok");
XtAddCallback(dialog, XmNcancelCallback, msgBoxCB, (XtPointer)"cancel");
XtAddCallback(dialog, XmNhelpCallback, msgBoxCB, (XtPointer)"help");
XmStringFree(xmTitle);
XmStringFree(xmMsg);
return;
}
/**** menuBar handler ****/
void menuBarCB(Widget widget, XtPointer clientData, XtPointer callData) {
String menuName = XtName(XtParent(widget));
String menuItemName = XtName(widget);
KeySym mnemonic = getMnemonic(menuName, menuItemName);
if(!strcmp(menuName, "fileMenu")) {
switch(mnemonic) {
case 'O':
/* printf("you clicked Open\n"); */
showStatus("Open");
createMsgBox("Open", "Put open code here");
break;
case 'S':
/* printf("you clicked Save\n"); */
showStatus("Save");
createMsgBox("Save", "Put save code here");
break;
case 'x':
/* printf("you clicked Exit\n"); */
/* showStatus("Exit"); */
/* createMsgBox("Exit", "Put exit code here"); */
exit(0);
break;
default:
printf("pg_menu.php\n");
return;
}
}
if(!strcmp(menuName, "editMenu")) {
switch(mnemonic) {
case 't':
/* printf("you clicked Cut\n"); */
showStatus("Cut");
createMsgBox("Cut", "Put cut code here");
break;
case 'C':
/* printf("you clicked Copy\n"); */
showStatus("Copy");
createMsgBox("Copy", "Put copy code here");
break;
case 'P':
/* printf("you clicked Paste\n"); */
showStatus("Paste");
createMsgBox("Paste", "Put paste code here");
break;
case 'l':
/* printf("you clicked Clear\n"); */
showStatus("Clear");
createMsgBox("Clear", "Put clear code here");
break;
default:
printf("pg_menu.php\n");
return;
}
}
return;
}
/**** check for notifications ****/
Boolean notifyCB(XtPointer appShell) {
PGnotify *notify;
char *sql;
PGresult *res;
PQconsumeInput(dbConn);
if((notify = PQnotifies(dbConn)) != NULL) {
if(!strcmp(notify->relname, "noe")) {
printf("notified\n");
asprintf(&sql,
"select n_val from noe where s_id = %d order by n_id desc;", clientID);
printf("%s\n", sql);
res = PQexec(dbConn, sql);
if(PQntuples(res) > 0) {
printf("more than zero\n");
n_val = PQgetvalue(res, 0, 0);
printf("n_val = %s\n", n_val);
}
PQclear(res);
}
}
/**** keep checking ****/
return False;
}
/**** simple menu item dialog handler ****/
void msgBoxCB(Widget widget, XtPointer clientData, XtPointer callData) {
showStatus("");
return;
}
/**** what's happening? ****/
void showStatus(String status) {
XmTextSetString(statusTextField, status);
return;
}
/**** this is a substitute for an array or something ****/
KeySym getMnemonic(String menuName, String menuItemName) {
KeySym mnemonic;
if(!strcmp(menuName, "fileMenu")) {
if(!strcmp(menuItemName, "button_0")) return XStringToKeysym("O");
if(!strcmp(menuItemName, "button_1")) return XStringToKeysym("S");
if(!strcmp(menuItemName, "button_2")) return XStringToKeysym("x");
}
if(!strcmp(menuName, "editMenu")) {
if(!strcmp(menuItemName, "button_0")) return XStringToKeysym("t");
if(!strcmp(menuItemName, "button_1")) return XStringToKeysym("C");
if(!strcmp(menuItemName, "button_2")) return XStringToKeysym("P");
if(!strcmp(menuItemName, "button_3")) return XStringToKeysym("l");
}
return NULL;
}
/**** the main program ****/
main(int argc, char *argv[]) {
Widget appShell;
Widget appManager;
Widget appContent;
Widget menuBar;
Widget statusBar;
XtAppContext appContext;
setClientID();
appShell = XtVaOpenApplication(&appContext, "appClass",
NULL, 0, &argc, argv, NULL, applicationShellWidgetClass,
NULL);
appManager = XtVaCreateManagedWidget("appManager",
xmFormWidgetClass, appShell,
NULL);
menuBar = (Widget)createMenuBar(appManager);
XtManageChild(menuBar);
statusBar = createStatusBar(appManager);
XtManageChild(statusBar);
appContent = createAppContent(appManager, menuBar, statusBar);
XtManageChild(appContent);
XtRealizeWidget(appShell);
XtAppAddWorkProc(appContext, notifyCB, appShell);
XtAppMainLoop(appContext);
}
