69 lines
1.8 KiB
Java
69 lines
1.8 KiB
Java
package org.bspeice.minimalbible.activities.downloader.manager;
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import android.util.Log;
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import org.crosswire.jsword.book.Book;
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import org.crosswire.jsword.book.BookException;
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import org.crosswire.jsword.book.Books;
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import org.crosswire.jsword.book.BooksEvent;
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import org.crosswire.jsword.book.BooksListener;
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import java.util.List;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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/**
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* Manager to keep track of which books have been installed
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*/
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@Singleton
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public class InstalledManager implements BooksListener {
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@Inject DownloadManager downloadManager;
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private Books installedBooks;
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private List<Book> installedBooksList;
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/**
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* Register our manager to receive events on Book install
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* This is a relatively expensive operation,
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* so we don't put it in the constructor.
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*/
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public void initialize() {
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installedBooks = Books.installed();
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installedBooksList = installedBooks.getBooks();
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installedBooks.addBooksListener(this);
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}
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public boolean isInstalled(Book b) {
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if (installedBooks == null) {
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initialize();
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}
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return installedBooksList.contains(b);
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}
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@Override
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public void bookAdded(BooksEvent booksEvent) {
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Book b = booksEvent.getBook();
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if (!installedBooksList.contains(b)) {
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installedBooksList.add(b);
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}
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}
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@Override
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public void bookRemoved(BooksEvent booksEvent) {
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Book b = booksEvent.getBook();
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if (installedBooksList.contains(b)) {
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installedBooksList.remove(b);
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}
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}
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public void removeBook(Book b) {
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try {
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installedBooks.removeBook(b);
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} catch (BookException e) {
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Log.e("InstalledManager", "Unable to remove book (already uninstalled?): " + e.getLocalizedMessage());
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}
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}
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}
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