258 lines
9.7 KiB
C#
258 lines
9.7 KiB
C#
using System;
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using System.ComponentModel;
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using System.Text.RegularExpressions;
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using System.Windows.Forms;
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using GreatHomeChildcare.Models;
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namespace GreatHomeChildcare
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{
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public partial class frmGuardianCrud : Form
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{
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//global variables
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SqliteDataAccess SqliteDataAccess = new SqliteDataAccess();
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public static Guardian guardian = new Guardian();
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public static string strPin = String.Empty;
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enum IsAdmin
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{
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No = 0,
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Yes = 1
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}
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public frmGuardianCrud()
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{
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InitializeComponent();
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}
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/* Load up the form with an existing guardian
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* if the "edit guardian" button was pressed
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* on the child crud form.
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*/
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private void frmGuardianCrud_Load(object sender, EventArgs e)
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{
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int guardian_id = 0;
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IsAdmin adminOut;
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FillIsAdminComboBox();
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/* If it's the first time run of this program
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* then setup the initial admin user.
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*/
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if(SqliteDataAccess.GetNumAdmins() <= 0)
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{
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isAdminComboBox.SelectedItem = IsAdmin.Yes;
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isAdminComboBox.Enabled = false;
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btnCancelClose.Enabled = false;
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}
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else
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{
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guardian_id = frmChildCrud.guardian_id;
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}
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if (guardian_id > 0)
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{
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guardian = SqliteDataAccess.GetGuardianById(guardian_id);
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idNumericUpDown.Value = guardian.id;
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lastNameTextBox.Text = guardian.LastName;
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firstNameTextBox.Text = guardian.FirstName;
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phoneNumberNumericUpDown.Value = guardian.PhoneNumber;
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emailAddressTextBox.Text = guardian.EmailAddress;
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strPin = guardian.PinNumber.ToString();
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tbPinNumber.Text = "****";
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//Load the isAdmin combo box based from enum value.
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//ref: chuck costarella
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Enum.TryParse<IsAdmin>(guardian.isAdmin.ToString(), out adminOut);
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isAdminComboBox.SelectedItem = adminOut;
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}
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}
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// Fill the IsAdmin combo box with our enum.
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private void FillIsAdminComboBox()
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{
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isAdminComboBox.Items.Add(IsAdmin.No);
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isAdminComboBox.Items.Add(IsAdmin.Yes);
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isAdminComboBox.SelectedItem = IsAdmin.No;
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}
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//Close the form without saving changes.
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private void btnCancelClose_Click(object sender, EventArgs e)
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{
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Close();
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}
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/* Save a new guardian or update
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* an existing guardian.
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* INPUT: Data from form.
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* OUTPUT: data to sql database.
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*/
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private void btnSaveClose_Click(object sender, EventArgs e)
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{
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Guardian checkExistingGuardian = new Guardian();
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int num_admins;
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this.Validate();
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this.ValidateChildren();
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// Check to see if any control is in error.
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foreach (Control c in errorProvider1.ContainerControl.Controls)
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{
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if (errorProvider1.GetError(c) != "")
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{
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MessageBox.Show("Guardian not saved due to errors on the form!", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
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return;
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}
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}
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// validate pin
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if(strPin.Length < 4)
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{
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MessageBox.Show("Please enter a 4-digit pin number.", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
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return;
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}
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checkExistingGuardian = SqliteDataAccess.GetGuardianByPin(Int32.Parse(strPin));
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//If this is a new guardian, check to see if that pin is in use.
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if(idNumericUpDown.Value == 0 && checkExistingGuardian != null)
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{
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MessageBox.Show("Please choose a different PIN number.", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
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return;
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}
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guardian.id = Int32.Parse(idNumericUpDown.Value.ToString());
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guardian.LastName = ImageWrangler.CapitalizeFirstLetter(lastNameTextBox.Text);
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guardian.FirstName = ImageWrangler.CapitalizeFirstLetter(firstNameTextBox.Text);
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guardian.PhoneNumber = long.Parse(phoneNumberNumericUpDown.Value.ToString());
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guardian.EmailAddress = emailAddressTextBox.Text;
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guardian.PinNumber = Int32.Parse(strPin);
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guardian.isAdmin = (int)isAdminComboBox.SelectedItem;
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if(guardian.id == 0) // new guardian
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{
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SqliteDataAccess.InsertNewGuardian(guardian);
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}
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else
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{
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//Check to see if no admins will be left over.
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num_admins = SqliteDataAccess.GetNumAdmins();
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num_admins--;
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if ((IsAdmin)isAdminComboBox.SelectedItem == IsAdmin.No
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&& num_admins <= 0)
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{
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MessageBox.Show("You are removing the last known admin, that would break this program.\n\rThe IsAdmin selection has changed to YES, please re-check the form entry then resubmit.", "Great Home Childcare", MessageBoxButtons.OK, MessageBoxIcon.None);
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isAdminComboBox.SelectedItem = IsAdmin.Yes;
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return;
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}
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SqliteDataAccess.UpdateGuardian(guardian);
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}
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Close();
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}
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// Basic input validation on a string given a textbox control
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// ensures only values a-z, with length two or greater.
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private void String_TextBox_Validating(object sender, CancelEventArgs e)
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{
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TextBox tb = (TextBox)sender;
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if (!Regex.IsMatch(tb.Text, "[A-Za-z]{2,}"))
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errorProvider1.SetError(tb, "Enter a value a-z only of length two or longer.");
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else
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errorProvider1.SetError(tb, "");
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}
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/* Does not really check to see if it is a valid phone number
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* since the phone companies introduce new area codes all the damn time.
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* Only checks to see the most likely case that the user of the program
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* has left the phone number value as the default minimum value.
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*/
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private void phoneNumberNumericUpDown_Validating(object sender, CancelEventArgs e)
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{
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if (phoneNumberNumericUpDown.Value == phoneNumberNumericUpDown.Minimum
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|| phoneNumberNumericUpDown.Value == phoneNumberNumericUpDown.Maximum)
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{ errorProvider1.SetError(phoneNumberNumericUpDown, "Type in a valid phone number"); }
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else
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{ errorProvider1.SetError(phoneNumberNumericUpDown, ""); }
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}
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//Validates any given combobox to ensure an item is selected.
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private void isAdminComboBox_Validating(object sender, CancelEventArgs e)
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{
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ComboBox cb = (ComboBox)sender;
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if (cb.SelectedIndex < 0)
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{ errorProvider1.SetError(cb, "Select an item."); }
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else
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{ errorProvider1.SetError(cb, ""); }
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}
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//validate a 4-digit pin number was entered.
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private void tbPinNumber_Validating(object sender, CancelEventArgs e)
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{
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if(tbPinNumber.TextLength != 4)
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{ errorProvider1.SetError(tbPinNumber, "Please enter a 4-digit PIN."); }
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else
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{ errorProvider1.SetError(tbPinNumber, ""); }
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}
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/* Checks to see if provided email address is valid
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* by matching against an email address regex i stole from the interweb.
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*/
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private void emailAddressTextBox_Validating(object sender, CancelEventArgs e)
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{
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//email address regex
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//^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,5}$
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if (!Regex.IsMatch(emailAddressTextBox.Text, @"^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,5}$"))
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errorProvider1.SetError(emailAddressTextBox, "Enter a valid email address: user@domain.com");
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else
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errorProvider1.SetError(emailAddressTextBox, "");
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}
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private void btnNumButton_Click(object sender, EventArgs e)
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{
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//Don't allow a PIN length longer than 4 digits.
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if (strPin.Length >= 4)
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return;
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//to the passed in sender source and cast it to a Button
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Button button = (Button)sender;
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strPin += button.Text;
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tbPinNumber.Text += button.Text;
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}
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//Prevents typing in the pin number box.
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private void tbPinNumber_KeyPress(object sender, KeyPressEventArgs e)
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{
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//Don't allow typing in the control.
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e.Handled = true;
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}
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/*Clears the pin entry completely,
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* resetting the hidden variable strPin,
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* and clearing the text box
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*/
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private void btnCE_Click(object sender, EventArgs e)
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{
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strPin = String.Empty;
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tbPinNumber.Text = String.Empty;
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}
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// Deletes the last number entered into the pinpad.
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private void btnBack_Click(object sender, EventArgs e)
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{
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//If there is nothing in the display, do not attempt
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//to remove any digits, or the program will crash.
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if (strPin.Length == 0)
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return;
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//Assign the text in the display using a substring
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//of whatever the text is, subtracting the length by 1.
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//This effectively 'strips' the last digit from the display string.
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tbPinNumber.Text = tbPinNumber.Text.Substring(0, tbPinNumber.Text.Length - 1);
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strPin = strPin.Substring(0, strPin.Length - 1);
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}
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}
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}
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