private void BtnSaveRecipe_Click(object sender, RoutedEventArgs e)
{
List <string> errors = Recipes.Validate(Recipes.Current);
bool success = false;
if (errors.Count == 0)
{
// New Recipes always have 0 as their Id.
if (Recipes.Current.Id == 0)
{
success = Recipes.Add(Recipes.Current);
}
else // Existing recipes
{
success = Recipes.Save();
}
if (success)
{
MessageBox.Show(
"Recipe saved!",
"Success",
MessageBoxButton.OK,
MessageBoxImage.Information
);
// Turn off flag so we can close the window right away
PendingChanges = false;
// Update topmost parent window
ViewRecipes viewRecipes = FindViewRecipes();
if (viewRecipes != null)
{
viewRecipes.Refresh();
}
// TODO: also update owner if its not ViewRecipes
Close();
}
else
{
MessageBox.Show(
"Unexpected error saving your recipe",
"Save failed",
MessageBoxButton.OK,
MessageBoxImage.Error
);
}
}
else
{
MessageBox.Show(
"There are problems saving your recipe:\r\n" + string.Join("\r\n", errors.ToArray()),
"Error",
MessageBoxButton.OK,
MessageBoxImage.Error
);
}
}
/// <summary>
/// Run window close routine.
/// </summary>
/// <returns>True if it is safe to close, false otherwise</returns>
private bool ClosingRoutine()
{
bool continueClose = true;
// Prompt if there were changes
if (PendingChanges)
{
// Prompt user for unsaved changes
MessageBoxResult result = MessageBox.Show(
"You have unsaved changes. Discard them?",
"Continue?",
MessageBoxButton.YesNo,
MessageBoxImage.Warning
);
// Discard and ensure Owner windows do not bear the unsaved changes
if (result == MessageBoxResult.Yes)
{
// Discard changes and propagate to Owner windows
Recipes.Discard();
/**
* There are only 2 known paths to this window:
* 1. Via ViewRecipe
* 2. Via ViewRecipes
*
* #1 has code to iteratively find the topmost window and run refresh, but #2
* still needs code to be traversed via iteration.
*
* Since there are only 2 known paths, we will target the other path (ViewRecipe)
* explicitly and not waste time writing an iterator to refresh every single
* Owner.
*/
// Find viewRecipes and reset data contexts and item sources based on discard
ViewRecipes viewRecipes = FindViewRecipes();
if (viewRecipes != null)
{
viewRecipes.Refresh();
}
// Explicitly refer to ViewRecipe if Owner is such and refresh it
if (Owner is ViewRecipe)
{
((ViewRecipe)Owner).Refresh();
}
}
else // User does not want to lose changes
{
continueClose = false;
}
}
return(continueClose);
}
/// <summary>
/// Find a reference of RecipesModel and use it as Db on this window
/// </summary>
/// <returns>True if it found and set the Db reference. False otherwise</returns>
private bool FindAndMaybeSetDb()
{
bool set = false;
ViewRecipes viewRecipes = FindViewRecipes();
if (viewRecipes != null)
{
Db = viewRecipes.Db;
set = true;
}
return(set);
}