/// <summary>
/// Returns a collection of Books that match the specified search criteria, and
/// sorted according to the current sort sequence.
/// </summary>
/// <param name="criteria">The criteria use to match the bolks.</param>
/// <returns>Sorted collection of matching Books.</returns>
public static IEnumerable <BookViewModel> GetMatchingBooks(SearchViewModel criteria)
{
// Return empty list if search criteria not specified.
if (criteria == null)
{
return(new List <BookViewModel>());
}
// Clear out the existing books.
_libraryDataSource.AllBooks.Clear();
// Map the search criteria.
// Instantiate the mapper class.
var mapper = new MapSearchViewModelToSearchCriteria <SearchViewModel>(_libraryDataSource._ioc.Resolve <SearchCriteriaFactory>());
// Map the SearchViewModel to the SearchCriteria.
var searchCriteria = mapper.Map(criteria);
// Call the repository, SearchBooks()
var allBooks = _libraryDataSource._libraryRepository.SearchBooks(searchCriteria);
foreach (var book in allBooks)
{
_libraryDataSource.AllBooks.Add(MapLibraryBookToBookViewModel.Map(book));
}
// Call the GetBooks method as this will invoke the current sort for the results.
return(GetBooks());
}
/// <summary>
/// Gets a collection of books, containing all books in the library, sorted according
/// to the current sort sequence.
/// </summary>
/// <returns>A sorted collection of books</returns>
public static IEnumerable <BookViewModel> ResetAllBooks()
{
// Clear out any existing books.
_libraryDataSource.AllBooks.Clear();
// Get all books from the data model.
var allBooks = _libraryDataSource._libraryRepository.GetAllBooks();
foreach (var book in allBooks)
{
_libraryDataSource.AllBooks.Add(MapLibraryBookToBookViewModel.Map(book));
}
// Call the GetBooks method as this will invoke the current sort for the results.
return(GetBooks());
}
/// <summary>
/// Method <c>LoadData</c> is called to load the view model with the data
/// from the underlying Data Model, via the repositories, which access
/// the underlying Data Model.
/// </summary>
private void LoadData()
{
// Load _allBooks (LibraryRepository)
var allBooks = _libraryRepository.GetAllBooks();
// Process each indiviually to ensure the UI observable stuff is updated.
foreach (var book in allBooks)
{
this.AllBooks.Add(MapLibraryBookToBookViewModel.Map(book));
}
// Load _allSearches (SearchRepository)
var allSearches = _searchRepository.GetSearches();
foreach (var search in allSearches)
{
this.AllSearches.Add(MapSearchCriteriaToSearchViewModel.Map(search));
}
var searchTypes = _searchRepository.GetSearchTypes();
foreach (var searchType in searchTypes)
{
// Create a SearchTypeViewModel
SearchTypesViewModel typeVM = new SearchTypesViewModel()
{
Type = searchType,
Values = new ObservableCollection <string>()
};
// Add a "Select" message as the first value for the search Type.
// TODO: Correct the Grammer for this function, select An Author, Select a Keyword.
if (searchType == "SearchString")
{
typeVM.Values.Add(string.Format("Type a value into the search string"));
}
else
{
typeVM.Values.Add(string.Format("Select a {0}....", searchType));
}
// Get the possible values from the library.
var values = _libraryRepository.GetSearchableBookValues(searchType);
// Add each possible value into the SearchTypesViewModel
foreach (var val in values)
{
typeVM.Values.Add(val);
}
// Add the SearchType to the view model
this.CurrentSearch.SearchTypes.Add(typeVM);
this.SearchTypes.Add(typeVM);
}
// Load _currentSearch (item 0 of the searches loaded, if there are any)
if (this.AllSearches.Count() == 0)
{
// set to new search
this.CurrentSearch.UniqueId = string.Empty;
this.CurrentSearch.Type = _searchTypes[0].Type;
this.CurrentSearch.SearchString = string.Empty;
this.CurrentSearch.SearchDate = DateTime.Now.ToString();
this.CurrentSearch.SelectedTypeIndex = 0;
this.CurrentSearch.SelectedTypeValueIndex = 0;
}
else
{
// Set to the first search.
this.CurrentSearch.UniqueId = this.AllSearches[0].UniqueId;
this.CurrentSearch.Type = this.AllSearches[0].Type;
this.CurrentSearch.SearchString = this.AllSearches[0].SearchString;
this.CurrentSearch.SearchDate = this.AllSearches[0].SearchDate;
int idx = this.SearchTypes.IndexOf(new SearchTypesViewModel()
{
Type = this.CurrentSearch.Type
});
this.CurrentSearch.SelectedTypeIndex = idx;
this.CurrentSearch.SelectedTypeValueIndex = 0;
}
// Set the default sort sequence for display, which is by Title
this._currentSortSequence = BookSortEnum.Title;
}