//Ctor of Login Dialog
public LoginWindow()
{
InitializeComponent();
//Try open the Data File and read the Info from it.
try
{
//if there's file at all
if (File.Exists(DBData.FilePath))
{
MainWindow.mainLibrary = MainWindow.mainLibrary.GetBLData();
}
//if it's the first initiation of the program - because there's no data file
else
{
GuiMsgs.FirstLogin();
}
}
//catching the possible Exception and showing to the user with warning sign
catch (Exception ex)
{
GuiMsgs.Warning(ex.Message);
}
//Disable the login button until the user enters some characters
//in both fields
GuiChanges.Disable(btnLogin);
txtUserName.HorizontalContentAlignment =
pswPassword.HorizontalContentAlignment = HorizontalAlignment.Center;
pswPassword.PasswordChar = '*';
//Focusing the keyboard into username field
txtUserName.Focus();
}
//Enable "edit" and "delete" buttons if the Selected Index is valid
private void EnableCommands(object sender, SelectionChangedEventArgs e)
{
if (SelectedIndexIsValid())
{
GuiChanges.Enable(btnEdit, btnDelete);
}
}
/// <summary>
/// Manipulation with the GUI Elements depending on selection that user made
/// </summary>
/// <returns>Selected Item Index if it's in valid range</returns>
public int GridSelected()
{
//Creating the Array of elements for simple handling of GUI,
//instead of passing to GuiChanges class Methods each one of the controls,
//pass only one array variable. Simple and Effective
UIElement[] controlsForDataGrid = { btnEdit, btnDetails, btnDelete, btnBorrow, btnQuantity };
//if user clicks in the DataGrid - check if the click Event
//Occurred in the valid range to prevent Exception
if (dataLib.SelectedIndex >= 0 && dataLib.SelectedIndex < mainLibrary.Items.Count)
{
//Enable the buttons
GuiChanges.Enable(controlsForDataGrid);
//Fine tuning the controls depending on current user Rights
ButtonsAvailable();
//Temp variable for Changing the controls text
var tmpItem = (AbstractItem)dataLib.SelectedItem;
//------------ Changing the controls Caption depending ------------//
//------------ on the current Item choosed from the Library ------------//
btnDelete.Content = $"Delete this {tmpItem.ItemType}";
btnDetails.Content = $"Details of this {tmpItem.ItemType}";
btnEdit.Content = $"Edit this {tmpItem.ItemType}";
btnQuantity.Content = $"Quantity of this {tmpItem.ItemType}";
//------------ Changing the controls Caption depending ------------//
//------------ on the current Item choosed from the Library ------------//
//Switch for Borrowing Button - depends on current Item "IsBorrowed" State
switch (tmpItem.IsBorrowed)
{
case true:
btnBorrow.Content = $"Return this {tmpItem.ItemType}";
break;
case false:
btnBorrow.Content = $"Borrow this {tmpItem.ItemType}";
break;
}
//Return Selected Item index
return(dataLib.SelectedIndex);
}
//If the Selected Index is in invalid range
else
{
//Disable the related controls
GuiChanges.Disable(controlsForDataGrid);
//Fine tuning the controls depending on current user Rights
ButtonsAvailable();
//Return the index (even tough it's invalid)
return(dataLib.SelectedIndex);
}
}
//Showing or Hiding the search controls and fields depending on received Enum
private void ShowAndHideSearchFields(eShowOrHide showHide)
{
//Creating the Array of elements for simple handling of GUI,
//instead of passing to GuiChanges class Methods each one of the controls,
//pass only one array variable. Simple and Effective
UIElement[] searchControls = { lblName, txtName, lblAuthor, txtAuthor,
lblIssue, txtIssue, lblBaseCategory, cmbBaseCategory,
lblInnerCategory, cmbInnerCategory };
//Switch depending on enum
switch (showHide)
{
//Show the search controls
case eShowOrHide.Show:
//Show the elements from the created array
GuiChanges.Show(searchControls);
//Fill the ComboBox of Base category
GuiChanges.FillComboWithBaseCategory(cmbBaseCategory);
//If no selection of Base Category made
if (cmbBaseCategory.SelectedItem == null)
{
//Hide the inner Category ComboBox
GuiChanges.Hide(lblInnerCategory, cmbInnerCategory);
}
break;
//Hide the search controls
case eShowOrHide.Hide:
//Hide the elements from the created array
GuiChanges.Hide(searchControls);
//Search for the text fields in elements array
foreach (UIElement item in searchControls)
{
//If the Control is Text Box
if (item is TextBox)
{
//Clear the contents of the Text Box, so
//this way there's no interfear with feauture search options
//when the fields will be enabled and visible again
((TextBox)item).Text = string.Empty;
}
}
//Clean the Combo Boxes of Base and Inner Categories
cmbBaseCategory.ItemsSource = cmbInnerCategory.ItemsSource = null;
break;
}
}
//Fill the Inner Category ComboBox with relative values
private void FillInnerCategory()
{
GuiChanges.FillComboWithInnerCategory(cmbInnerCat, cmbBaseCat.SelectedItem);
cmbInnerCat.SelectedItem = CurrentItem.InnerCategory;
if (cmbInnerCat.SelectedIndex < 0)
{
cmbInnerCat.SelectedIndex++;
}
}
//checks the validity of input from the user and enables
//or disables the login button relatively
private void CanLogin()
{
if (!Validity.StringOK(pswPassword.Password) || !Validity.StringOK(txtUserName.Text))
{
GuiChanges.Disable(btnLogin);
}
else
{
GuiChanges.Enable(btnLogin);
}
}
//Ctor for add new Item window
public AddNewItem()
{
InitializeComponent();
//Hide the labels and the text boxes ubtil user chooses Item Type
GuiChanges.Hide(lblIssue, lblAuthor, txtIssue, txtAuthor);
//Obvously understandable by function name
GuiChanges.FillComboWithBaseCategory(cmbBaseCat);
//Untill user choose the BaseCategory - disable inner
GuiChanges.Disable(cmbInnerCat);
}
//Multiple Search CheckBox Checked Event
private void chkMultiSearch_Checked(object sender, RoutedEventArgs e)
{
//Show the search options
ShowAndHideSearchFields(eShowOrHide.Show);
//Cancel regular search option
chkSearch.IsChecked = false;
//Hide relative controls which not valid for the multiple search
GuiChanges.Hide(lblAuthor, txtAuthor, lblIssue, txtIssue);
//Raise the flag of multiple search
IsMultiSearch = true;
}
//Fine tuning the controls depending on current user Rights
private void ButtonsAvailable()
{
//Make desision depending on current User rights -
//Show and hide relative Controls
switch (mainLibrary.LibraryUsers.CurrentUser.Type)
{
case User.eUserType.Employee:
GuiChanges.Disable(btnUsers);
break;
case User.eUserType.Client:
GuiChanges.Disable(btnDelete, btnUsers, btnEdit, btnAdd, btnBorrow, btnQuantity);
break;
}
}
public EditUsers()
{
InitializeComponent();
this.WindowStartupLocation = WindowStartupLocation.CenterScreen;
//Preventing the DataGrid from inplace editing
dataUsers.IsReadOnly = true;
//set the source for the DataGrid
dataUsers.ItemsSource = MainWindow.mainLibrary.LibraryUsers.Users;
//Disable buttons because no User haven't been choosen
GuiChanges.Disable(btnDelete, btnEdit);
}
//Update the fields from current Item
public void UpdateFromItem()
{
//creating the arrays for easy handling the Journal controls
UIElement[] issue = { lblIssue, txtIssue };
//creating the arrays for easy handling the Book controls
UIElement[] author = { lblAuthor, txtAuthor };
//-------------- Updating the fields from Current Item -------------//
lblISBN.Text = $"ISBN: {CurrentItem.ISBN}";
lblTypeOf.Text = CurrentItem.ItemType;
chkBorrowed.IsChecked = CurrentItem.IsBorrowed;
GuiChanges.FillComboWithBaseCategory(cmbBaseCat);
cmbBaseCat.SelectedItem = CurrentItem.BaseCategory;
txtName.Text = CurrentItem.Name;
dtPick.SelectedDate = CurrentItem.PrintDate;
switch (CurrentItem.ItemType)
{
case "Book":
GuiChanges.Hide(issue);
GuiChanges.Show(author);
txtAuthor.Text = ((Book)CurrentItem).Author;
break;
case "Journal":
GuiChanges.Hide(author);
GuiChanges.Show(issue);
txtIssue.Text = ((Journal)CurrentItem).IssueNumber.ToString();
break;
}
//-------------- Updating the fields from Current Item -------------//
}
//init all elements depending on current working state
private void InitEditItemWindow()
{
this.WindowStyle = WindowStyle.SingleBorderWindow;
this.ResizeMode = ResizeMode.NoResize;
this.WindowStartupLocation = WindowStartupLocation.CenterScreen;
lblISBN.TextAlignment = TextAlignment.Center;
if (!EditMode) //showing details mode
{
this.Title = "Item Details";
//Show check button for Telling to the user if the item is borrowed or not
GuiChanges.Show(chkBorrowed);
//Disable all the controls because we're in "Show Details" mode
foreach (UIElement item in this.grdWindowGrid.Children)
{
GuiChanges.Disable(item);
}
//Button caption changed to "Exit"
btnSaveExit.Content = "Exit";
//After all controls being disabled because of "Show Details" mode,
//Enable the Exit button
GuiChanges.Enable(btnSaveExit);
}
else //editing Item Mode
{
//Button caption changed to "Save Changes"
btnSaveExit.Content = "Save Changes";
//Hide "Item is Borrowed" indicator CheckBox
GuiChanges.Hide(chkBorrowed);
}
}
//Fills the Inner Category ComboBox or hides it -
//depending on user input
private void FillInner()
{
//Creating an array for easy hiding and showing
//the Inner Category controls
UIElement[] inner = { lblInnerCategory, cmbInnerCategory };
//If there's any choice from the User on the Base Category ComboBox
if (cmbBaseCategory.SelectedItem != null)
{
//Then fill the Inner Category ComboBox
GuiChanges.FillComboWithInnerCategory
(cmbInnerCategory, cmbBaseCategory.SelectedItem);
//And show the Inner ComboBox to the user
GuiChanges.Show(inner);
}
//If there's no choice from the User on Base Category ComboBox
else
{
//if so - hide the Inner Category ComboBox
GuiChanges.Hide(inner);
}
}
//Hide and show related elements when user chooses the Item type
private void rdChecked(object sender, RoutedEventArgs e)
{
var rdValue = sender as RadioButton;
//Creating array of the GUI elements for easy manipulation with the Journal
UIElement[] issue = { lblIssue, txtIssue };
//Creating array of the GUI elements for easy manipulation with the Book
UIElement[] author = { lblAuthor, txtAuthor };
switch (rdValue.Name)
{
case "rdBook":
CurrentItem = ItemType.Book;
GuiChanges.Hide(issue);
GuiChanges.Show(author);
break;
case "rdJournal":
CurrentItem = ItemType.Journal;
GuiChanges.Hide(author);
GuiChanges.Show(issue);
break;
}
}
//Fills inner category relative to base that user chooses
//and enables the combo for Inner
private void FillInnerCombo(object sender, SelectionChangedEventArgs e)
{
GuiChanges.Enable(cmbInnerCat);
GuiChanges.FillComboWithInnerCategory(cmbInnerCat, cmbBaseCat.SelectedItem);
cmbInnerCat.SelectedIndex = 0;
}
