From 5f9654d3b4864495153fe3908d8ca7ae974dd3ba Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Wed, 8 Jan 2020 20:33:16 +0100
Subject: [PATCH] Basic input of email & password

---
 loginscreen.cpp | 147 ++++++++++++++++++++++++++++++++++++------------
 loginscreen.h   |   5 ++
 2 files changed, 117 insertions(+), 35 deletions(-)

diff --git a/loginscreen.cpp b/loginscreen.cpp
index ba482c5..a6aec64 100644
--- a/loginscreen.cpp
+++ b/loginscreen.cpp
@@ -2,6 +2,7 @@
 #include <string.h>
 
 #include <string>
+#include <iostream>
 
 #include "loginscreen.h"
 
@@ -12,50 +13,126 @@ LoginScreen::LoginScreen()
 
 }
 
+enum CursorPos {
+    EMAIL = 0,
+    PASSWORD = 1,
+    SUBMIT = 2
+};
+
 bool LoginScreen::exec()
 {
     initscr();			/* Start curses mode 		  */
     keypad(stdscr, TRUE); // Listen to function keys
+    noecho();
+    cbreak();	/* Line buffering disabled. pass on everything */
 
 
-    printw("ComunicTerm");	/* Print Hello World		  */
-    refresh();			/* Print it on to the real screen */
+    string email, password;
+    getCredentials(email, password);
 
-
-    // Get screen size
-    int row, col;
-    getmaxyx(stdscr, row, col);
-
-    const string msg = "Light client";
-    mvprintw(0, (col-static_cast<int>(msg.length())), msg.c_str());
-    refresh();
-
-
-    int startX = (row-4*2)/2;
-    int startY = (col-50)/2;
-
-
-    mvprintw(startX, startY, "Please login to your Comunic account:");
-
-    // Ask for email
-    wattron(stdscr, A_REVERSE);
-    mvprintw(startX+2, startY, "Email address:");
-    wattroff(stdscr, A_REVERSE);
-
-
-    // Ask for password
-    wattron(stdscr, A_REVERSE);
-    mvprintw(startX+4, startY, "Password:");
-    wattroff(stdscr, A_REVERSE);
-
-    // Validate button
-    wattron(stdscr, A_REVERSE);
-    mvprintw(startX+6, startY, "Login");
-    wattroff(stdscr, A_REVERSE);
-
-    refresh();
+    mvprintw(3,0, "Done!");
 
 
     getch();			/* Wait for user input */
     endwin();			/* End curses mode		  */
 }
+
+void LoginScreen::getCredentials(string &email, string &pass)
+{
+    int currPos = 0;
+    int currX = 0, currY = 0;
+
+    bool stop = false;
+
+    do {
+
+        erase();
+
+        printw("ComunicTerm");	/* Print Hello World		  */
+
+
+        // Get screen size
+        int row, col;
+        getmaxyx(stdscr, row, col);
+
+        const string msg = "Light client";
+        mvprintw(0, (col-static_cast<int>(msg.length())), msg.c_str());
+        refresh();
+
+
+        int startX = (row-4*2)/2;
+        int startY = (col-50)/2;
+
+
+        mvprintw(startX, startY, "Please login to your Comunic account:");
+
+
+
+
+        // Ask for email
+        if(currPos == EMAIL) wattron(stdscr, A_REVERSE);
+        mvprintw(startX+2, startY, "Email address:");
+        wattroff(stdscr, A_REVERSE);
+        printw(" ");
+        printw(email.c_str());
+        if(currPos == EMAIL) getyx(stdscr, currY, currX);
+
+
+        // Ask for password
+        if(currPos == PASSWORD) wattron(stdscr, A_REVERSE);
+        mvprintw(startX+4, startY, "Password:");
+        wattroff(stdscr, A_REVERSE);
+        printw(" ");
+        printw(pass.c_str());
+        if(currPos == PASSWORD) getyx(stdscr, currY, currX);
+
+        // Validate button
+        if(currPos == SUBMIT) wattron(stdscr, A_REVERSE);
+        mvprintw(startX+6, startY, "Login");
+        wattroff(stdscr, A_REVERSE);
+
+        if(currPos == SUBMIT) {curs_set(0);} else {curs_set(2);}
+
+        move(currY, currX);
+
+        refresh();
+
+        int c = wgetch(stdscr);
+
+        switch(c) {
+            case KEY_UP:
+                currPos--;
+                if(currPos < 0) currPos = 0;
+                break;
+
+            case KEY_DOWN:
+                currPos++;
+                if(currPos > 2) currPos = 0;
+                break;
+
+            case 10: // ENTER
+                if(currPos == EMAIL)
+                    currPos++;
+                else
+                    stop = true;
+                break;
+
+
+            case 263: // Erase
+                if(currPos == EMAIL && email.length() > 0)
+                    email.pop_back();
+                else if(currPos == PASSWORD && pass.length() > 0)
+                    pass.pop_back();
+                break;
+
+            default:
+                if(c > 126) break; // We can not process this value
+
+                if(currPos == EMAIL)
+                    email += static_cast<char>(c);
+                else if(currPos == PASSWORD)
+                    pass += static_cast<char>(c);
+        }
+
+    } while(!stop);
+}
diff --git a/loginscreen.h b/loginscreen.h
index 3579f81..b8868ab 100644
--- a/loginscreen.h
+++ b/loginscreen.h
@@ -4,10 +4,15 @@
  * @author Pierre HUBERT
  */
 
+#include <string>
+
 class LoginScreen
 {
 public:
     LoginScreen();
 
     bool exec();
+
+private:
+    void getCredentials(std::string &email, std::string &pass);
 };