GreatHomeChildcare-2/frmPinEntry.cs

143 lines
4.6 KiB
C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using GreatHomeChildcare.Models;
namespace GreatHomeChildcare
{
public partial class frmPinEntry : Form
{
//Global instance of the SqliteDataAccess object.
SqliteDataAccess SqliteDataAccess = new SqliteDataAccess();
const string DEFAULT_PIC_TAG = "DefaultPic";
const string CUSTOM_PIC_TAG = "dickpic";
public static string strPin = String.Empty;
public frmPinEntry()
{
InitializeComponent();
}
private void btnNumButton_Click(object sender, EventArgs e)
{
//Don't allow a PIN length longer than 4 digits.
if (strPin.Length >= 4)
return;
//to the passed in sender source and cast it to a Button
Button button = (Button)sender;
strPin += button.Text;
tbPinNumber.Text += button.Text;
if (strPin.Length == 4)
btnLogin.Enabled = true;
}
private void tbPinNumber_KeyPress(object sender, KeyPressEventArgs e)
{
//Don't allow typing in the control.
e.Handled = true;
}
private void btnCE_Click(object sender, EventArgs e)
{
strPin = String.Empty;
tbPinNumber.Text = String.Empty;
btnLogin.Enabled = false;
}
private void btnBack_Click(object sender, EventArgs e)
{
//If there is nothing in the display, do not attempt
//to remove any digits, or the program will crash.
if (strPin.Length == 0)
return;
//Assign the text in the display using a substring
//of whatever the text is, subtracting the length by 1.
//This effectively 'strips' the last digit from the display string.
tbPinNumber.Text = tbPinNumber.Text.Substring(0, tbPinNumber.Text.Length - 1);
strPin = strPin.Substring(0, strPin.Length - 1);
//disable login button
btnLogin.Enabled = false;
}
//
private void btnLogin_Click(object sender, EventArgs e)
{
Form frm2 = new frmMainForm();
frm2.FormClosed += new FormClosedEventHandler(MainFormClosed);
if(IsValidLogin(strPin))
{
frm2.Show();
Hide();
btnCE_Click(this, EventArgs.Empty);
}
}
/* valid login check to see if pin# exists in the db.
* INPUT integer pin number
* OUTPUT boolean true/false
*/
private bool IsValidLogin(string pin_in)
{
return true;
//TODO: Remove above return statement and implement after code testing.
//Could possibly move guardian to global and pass guardian to frmMainForm.
Guardian guardian = new Guardian();
guardian = SqliteDataAccess.GetGuardianByPin(Int32.Parse(pin_in));
if(guardian == null)
{
MessageBox.Show("Sorry, that is an invalid login.", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
return false;
}
return true;
}
//Show the pin login screen after the main student login/out form is closed.
private void MainFormClosed(object sender, FormClosedEventArgs e)
{
Show();
}
/* Checks to see if this is the first-ever time the application has
* run by querying number of rows in Guardian table.
* If number of rows <= 0, we must setup an admin user in the guardian table.
*/
private void frmPinEntry_Load(object sender, EventArgs e)
{
bool bIsFirstTime = false;
DialogResult dr;
bIsFirstTime = SqliteDataAccess.isFirstTimeRun();
if(bIsFirstTime)
{
dr = MessageBox.Show("Program not setup yet. Setup now?", "Great Home Childcare", MessageBoxButtons.YesNo, MessageBoxIcon.None);
//TODO: Open the form to add a new guardian.
if (dr == DialogResult.Yes)
return;
else //Show a message and close the application.
{
MessageBox.Show("Come back when you are ready to setup the program!", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
Close();
}
}
}
}
}