/// <summary>
/// Main constructor for creating the window for studying flashcards.
/// </summary>
public StudyFlashcardSetWindow(MainWindow mainWindow)
{
InitializeComponent();
UpdateFlashcardUI();
this.mainWindow = mainWindow;
currentFlashcardState = FlashcardState.Term; // Make the term be the first thing the user sees for the first flashcard loaded
}
/// <summary>
/// Event handler for when the item selection changes in the flashcard set list box.
/// </summary>
/// <param name="sender">The object that raised the event.</param>
/// <param name="e">The event arguments for when the selection is changed.</param>
private void FlashcardSetListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
// Update the current flashcard to the one selected
currentFlashcardSet = (FlashcardSet)flashcardSetListBox.SelectedItem;
currentFlashcardState = FlashcardState.Term;
flashcardsListCurrentIndex = 0;
UpdateFlashcardUI();
}
/// <summary>
/// Toggles the current flashcard face between the term and definition.
/// </summary>
private void ToggleFlashcardFace()
{
if (currentFlashcardSet == null)
{
return;
}
currentFlashcardState = (currentFlashcardState == FlashcardState.Definition) ? FlashcardState.Term : FlashcardState.Definition;
UpdateFlashcardUI();
}
/// <summary>
/// Goes to the next flashcard in the current set (if there is one).
/// </summary>
private void NextFlashcard()
{
flashcardsListCurrentIndex++;
if (flashcardsListCurrentIndex >= currentFlashcardSet.FlashcardsList.Count)
{
flashcardsListCurrentIndex = currentFlashcardSet.FlashcardsList.Count - 1;
return;
}
currentFlashcardState = FlashcardState.Term;
UpdateFlashcardUI();
}
/// <summary>
/// Goes to the previous flashcard in the current set (if there is one).
/// </summary>
private void PreviousFlashcard()
{
flashcardsListCurrentIndex--;
if (flashcardsListCurrentIndex < 0)
{
flashcardsListCurrentIndex = 0;
return;
}
currentFlashcardState = FlashcardState.Term;
UpdateFlashcardUI();
}
/// <summary>
/// Event handler for when the "Unload Current Set" button is clicked.
/// </summary>
/// <param name="sender">The object that raised the event.</param>
/// <param name="e">The event arguments for when the button is clicked.</param>
private void UnloadCurrentSetButton_Click(object sender, RoutedEventArgs e)
{
if (flashcardSetListBox.Items.Count > 0)
{
int selectedIndex = flashcardSetListBox.Items.IndexOf(currentFlashcardSet);
flashcardSetListBox.Items.RemoveAt(selectedIndex);
if (flashcardSetListBox.Items.Count > 0)
{
flashcardSetListBox.SelectedIndex = 0;
}
else
{
currentFlashcardSet = null;
}
currentFlashcardState = FlashcardState.Term;
flashcardsListCurrentIndex = 0;
UpdateFlashcardUI();
}
}
